ASFOUR SPECIALIZED HOSPITAL

ElectroMechanical WorksSchematic Design Report

Cairo, Dubai, JeddahJuly 2009

TABLE OF CONTENTSPage

I. INTRODUCTION

II. MECHANICAL SYSTEMSA. Heating, Ventilating and Air Conditioning

1. Codes and Regulations 12. Design Criteria 13. Design Temperature and Relative Humidity 24. Ventilation 65. Filtration Standards 106. Air Pressure and Air Circulation Condition 117. Noise Level 16 8. Ductwork 219. Pipe work 2110. Load Estimation 2211. Description of the HVAC System 2412. Staircase Pressurization 2713. Outline Specification 27

B. Plumbing

1. Codes and Regulations 282. Rainwater System 283. Sanitary Drainage System 294. Cold Water Systems 305. Domestic Hot Water systems 336. Blended Hot and Cold Water 367. Standard Plumbing Fixtures Residual Pressures 368. Steam System 379. Fuel System 3910. Irrigation System 4011. Medical Gases Systems 41

C. Fire Fighting Protection Systems

1. Basis of Design 442. Estimated Demand 443. Outline Specifications 44

d. Emergency Power

1. Introduction 452. Hospital Heating and Ventilation Systems on Emergency Power 453. Additional Equipment on Emergency Power 46

III. ELECTRICAL SYSTEMS1. General 472. Scope of Work 473. Interface with BMS 474. Design Criteria 485. Power supply and substation. 496. Electrical Load Estimate 497. Distribution Network. 508. Isolated Power System 529. Grounding System 5310. Lighting System. 5311. Central Battery System 5512. Power Outlets and wiring devices 5513. Lightning Protection System 5615. Fire Detection and Alarm System 5616. UPS SYSTEM 5717. Voice/Data System 5718. Emergency Power Supply 5819. Television Distribution System 5820. Public Address System 5921. Closed Circuit Television System 5922. Nurse Call System 5923. Intercom System 5924. Access Control System 6025. Master Clock System26. Summery of Electrical works Budget27. Major Electrical Equipment Life Cycle

APPENDIX (A) 61APPENDIX (B) 68APPENDIX (C) 70APPENDIX (D) 72APPENDIX (E) 74

IV. BUILDING MANAGEMENT SYSTEMS1. Codes and Regulations 762. Design Concept 76

1. General

This report is intended as an outline defining the scope of the electrical works to be included in Asfour Specialized Hospital project. This report is also aimed to define the essential guidelines and criteria to be adopted in the preparation of the Electrical design drawings and Specification as well as it gives a brief description of the proposed systems and equipment that will be selected from modern reputable products.

2. Scope of Work

The scope of work for the electrical installations covered by the report is described as follows:

Medium voltage (MV switch gear).

Medium voltage regulators.

Indoor dry type transformers.

Low voltage (LV) Main Distribution Boards MDB’s, Motor Control Centres (MCC’s) Distribution Panel boards (DP’s), Automatic transfer switch and final branch circuit panel boards (LP’s and PP’s)

Isolated power supply for medical equipment.

Automatic Reactive power compensation.

Bus way, MV- Cables, LV- cables and wires.

Raceways, cable trays, cable ladders and all related accessories.

Lighting outlets, Power Outlets and wiring devices.

Earthing system

Lighting system.

Lightning protection system

Fire detection and alarm system

Telephone (IP network) and Data systems.

Public Address system.

Closed circuit television CCTV system

Television distribution System (MATV).

Central battery system for escape routes lighting and exit signs.

Uninterruptible power supply system (UPS) for operating rooms I.C.U, administration and accounting department.

Master clock system.

Nurse calls system.

Access control system.

Miscellaneous electrical devices, fittings, accessories, isolating switches, outlets for medical equipment, etc.

Intercom systems

Emergency diesel generator plant.

Elevators

3. Interface with BMS

The following electrical systems, equipment will be interfaced with BMS for remote control or monitoring:-

MV switchgear.

Transformers.

LV main& Sub- distribution panels.

Generators.

UPS.

Central Battery System.

Lighting Control panel.

Motor Control Centre/Panels.

Fire Alarm System.

Public address system

Elevators.

4. Design Criteria

1. Objectives, Constraints and Other Considerations

The concept of the electrical works will be laid, based on the main objectives as summarized below:

To comply with applicable codes, standards and regulations of Cairo Electricity Distribution Company.

To meet the specific power and communications of all systems and equipment that indicated at electromechanical medical equipment requirements and rooms data sheet of Asfour Specialized Hospital (version June 2009) prepared by Client.

To achieve reliability and durability of networks and components.

To implement safety measures for the protection and safety of people and equipment.

While achieving the design objectives, other important factors will have to be considered carefully:

Cost effectiveness.

Efficiency and energy conservation.

Co-ordinations with other design elements.

Simplifying installations operation and maintenance.

Utility service continuity and avoiding operation disruption.

A careful study of the various project needs was conducted and alternatives elaborated for detailed investigation and study to verify optimum system design configuration.

2. Regulations and Standards

All electrical installations will be designed and specified in compliance with the recommendations of the following codes and standards which are proposed in accordance with local practice in Egypt:

Wiring Regulations for Electrical Installations, and approved code of practice in Egypt.

Wiring Regulation in Buildings issued by Institute of Electrical Engineers, (I.E.E.), U.K.

International Electro-Technical Commission, (I.E.C) Standards, Switzerland.British Standards Institution (B.S.), U.K.

Code for Interior Lighting issued by Chartered Institution of Building Services, (C.I.B.S.), U.K.

National Fire Protection Association, (N.F.P.A.), U.S.A. NFPA 45 Standard for laboratories Using Chemicals NFPA 70 National Electrical Code NFPA 72 National Fire Alarm Code NFPA 99 Standard for Health Care Facilities NFPA 110 Standard for Emergency and Standby Power Systems

National Electrical Manufacturers Association (NEMA)

Ambient Conditions

All electrical equipment and materials will be designed, specified and derated for a continuous and trouble free operation in the ambient conditions where the equipment are located as follows:

Maximum ambient temperature 50 deg. C

Minimum ambient temperature 00 deg. C

Maximum Relative Humidity 90%

3. Power Supply Characteristics:

Dual Medium voltage sources of normal power will be provided to the site at 11 KV, 50 Hz by Cairo Electricity Distribution Company to give the ability to switch between two utility sources via electrically operated medium voltage circuit breaker (bus coupler scheme), in case of failure of one of them. Each feeder will be sized to cater for the full load of the hospital.

This incoming voltage will be stepped down to 380/220 volts via solidly earthed transformers. If both utility sources are lost, generators back up essential loads via automatic transfer switches.

All electrical equipment, accessories and fittings shall be designed and manufactured to operate continuously in the electricity supply having the following characteristics:

Voltage : 380 volts+/- 10%, 3-phase – 4 wires

Frequency : 50 HZ +/- 4%

Neutral : Solidly earthed

5. Power Supply and Substation:

The Substation shall comprise Authority switchgear room, medium voltage regulators room, medium Voltage switchgear room, the dry type transformer rooms and the main low voltage switchboards electric room and generators room.

The design of the substation shall comply with local regulations and requirements for dimensions, heights, equipment installations, ventilations, accessibility, fire control, etc.

Bus way feeders shall be provided to connect transformers to main low voltage distribution boards.

Each two main low voltage distribution boards are coupled together throw electrically operated bus tie circuit breaker to increases the system reliability by giving the flexibility to transfer of loads from one transformer to the other one manually or remotely through BMS upon the priority and importance of the loads, if one transformer fails or needs maintenance.

Main Metering will be provided on the medium-voltage side at the cubicles of the (MV) switchgear.

Power factor correction capacitors shall be provided for low voltage distribution boards (MDB)’s to maintain the power factor at 0.95 minimum.

6. Electrical Load Estimate

In order to estimate the lighting and convenience power loads of the project the following criteria was adapted based on load densities in volt-ampere per meter square. Diversity has also been applied to the VA/m2 figures.

Load densities in VA/m2 are calculated based on Asfour Hospital medical consultant recommendations and as shown in the schematic layout for several rooms as attached.

1. Operating Rooms and Cardiac Catheter Operation Rooms:

Lighting and convenience power 160 VA/m2 Without Diversity.

2. Recovery Rooms:

Lighting and convenience power 130 VA/m2 (Diversity 90%)

3. Patient Rooms:

Lighting and convenience power 130 VA/m2 (Diversity 70%)

4. Service Areas, Storage, Archives and changing rooms:

Lighting and convenience power 30 VA/m2 (Diversity 78%)

5. Main Sterilize, I.V preparation and Air Lock:

Lighting and convenience power 70 VA/m2 (Diversity 78%)

6. Ultra sound, C.T Scan, X-Ray, Gamma Camera and Laboratories Rooms:

Lighting and convenience power 70VA/m2 (Diversity 70%)

7. Passive treatment and Clinic Rooms:

Lighting and convenience power 110VA/m2 (Diversity 78%)

8. Kitchen:

Lighting and convenience power 100VA/m2 (Diversity 80%)

9. Chillers Hall in Services building:

Lighting and convenience power 30VA/m2 (Diversity 70%)

From above, the maximum demand has been calculated and the total load of the Project is found to be around 7160 KVA (As detailed in Appendix “A”). Considering 10% spare capacity and applying an overall diversity factor of 0.80.

The maximum peak demand load will be 7160 X 1.1 X 0.80 = 6300 KVA which shall be met by six dry type transformers of 1.6 MVA.

The selected power supply and distribution scheme should achieve that Power distribution transformer is not to be loaded more than 90% of its full capacity including

10% spare capacity for future and to withstand the starting current of the chillers and its auxiliary pumps..

LV distribution cabling shall be sized to allow 10% increase in load.

7. Distribution Network

1. Configuration

Normal power supply will be made available by Local Authority, at 11 KV, 50 Hz. The building substation inside services building will include Two separate 11KV circuit breakers (one for each incoming feeder), two medium voltage regulators ( one for each incoming feeder), medium voltage switchgear, six dry type power transformers, three low voltage main distribution boards , and two diesel generators each item will be located in separate electric room.

Two separate 11KV circuit breakers shall be connected to, the MV feeders of the electrical authority which come from two different sources to increase the system reliability.

Medium voltage regulator has been used to increase incoming voltage level stability and to protect the hospital from any voltage fluctuations.

The sizing of the two medium voltage regulators is based on possibility of each regulator can withstand the total load of the project in case of failure of the other utility source/regulator.

Each medium voltage regulator is equipped with by-pass arrangement for maintenance purposes or in case of failure (As power distribution scheme in Appendix '' B''). The (LV) Main Distribution Boards (MDB’s) will be installed in separate room next to the transformers room and connected to the transformers via copper bus way.

The MDB will be of the totally enclosed free standing cubicle type housing draw out main incoming electrically operated air circuit breaker and fixed outgoing moulded-case circuit breakers incoming moulded case switch/MCCBand outgoing fixed moulded case circuit breakers.

Based on the required power demand, sub distribution boards and panel boards will be allocated for individual areas or load centers in the various floors inside electrical rooms, or closets. The Motor Control Centers will be installed near mechanical areas. The distribution panel boards inside the hospital will be connected to the main distribution board inside the services building via copper XLPE/STA/PVC cables on cable ladder through under ground duct banks

CU/PVC/STA/PVC cables laid on cable trays or in conduits will then be utilized to connect branch circuit panel boards distributed throughout, to the respective distribution panel boards.

Branch-circuit panel boards will feed final sub-circuits for lighting and small power outlets. Each will serve a defined zone. The voltage drop on feeders, sub-feeders will

not exceed 2% and on branch circuits it will not exceed 3%. However, in no case shall the voltage drop from the transformer low volatge and up to farthest end of a branch circuit exceed 5% unless otherwise specified.

The breaking capacity of circuit breakers will be fully rated and selected in accordance with the short circuit current at each board. The design will allow for tripping discrimination in circuit breakers selection to minimize inconvenience and unnecessary tripping.

The maximum demand voltage, current etc will be recorded through the Building Automation and Control System (BACS).

2. Main Distribution Boards And Motor Control Centers

The Main Distribution Board (normal and emergency) will be of the totally enclosed freestanding type housing draw-out main incoming air circuit breaker and moulded case circuit breakers for outgoing feeders.

Each transformer will be provided with its own Main Distribution Board.

The motor control centers (MCCs) shall dedicated to supply mechanical loads and will have the same features and construction as the main distribution board(s) or distribution panel boards as appropriate and will house the required starters, control, monitoring and short circuit protection equipment..

Spare and space capacities will be provided within each MDB and MCC.

3. Sub Main Distribution Boards (SMDBs)

Distribution panel boards distributed in the building shall be totally enclosed floor or wall mounted, depending on the size, housing

Sub Main Distribution Boards will be of the 3 phase type, totally enclosed, dead front type, made of sheet steel enclosures, IP 42 for indoor installations and IP 55 for outdoor installations. Each board will include neutral and grounding busbars sized as per regulations. Boards will be installed surface mounted where located in dedicated electrical rooms or closets and recessed otherwise as applicable.

SMDBs will have main incoming moulded case circuit breaker and moulded case outgoing circuit breakers.

4. Cables and Raceways

Medium voltage 11 KV cables from Authority switchgear to main 11kv circuit breakers and then to hospital switchgear and then to transformers shall be copper XLPE/PVC type.

All low voltage feeder and sub-feeder cables will be copper conductor cables, multi-core XLPE/PVC cables laid on cable trays or ladders, or directly clipped to ceilings or walls in electrical shafts, or can be single core, non-armored XLPE / PVC insulated running in heavy gauge PVC conduits.

Separate Heavy gauge PVC conduits or EMT will be used for lighting circuits, power circuits and low current systems wiring.

Heavy gauge PVC conduits will be used for concealed and embedded installations. Galvanized steel conduits shall be used for exposed installations.

Galvanized flexible conduits will be used for terminating all connections to motors and vibrating equipment..

Cable trays will be of hot dip galvanized sheet steel supported from ceilings or wall.

All conduits for branch-circuit wiring will be either embedded in concrete, concealed in walls and under floor tiles or exposed above false ceilings or simply exposed in mechanical and electrical rooms.

In general sub-circuit wiring will be by means of single core PVC insulated copper conductors with earth continuity conductors run in conduits and protected by miniature circuit-breakers.

All circuits for both lighting and power applications will be loaded to not more than 75% of the actual net rated capacity of the protection circuit breaker.

5. Distribution Panels And Final Branch-Circuit Panel Boards

Low voltage distribution panels and final branch-circuit panel boards will be totally enclosed, made of sheet steel enclosures, installed surface mounted where located in special electrical rooms or closets and recessed otherwise.

Each panel board will house incoming moulded case circuit breaker (MCCB) or moulded case switch (MCS), contactor (for lighting panels controlled remotely from push button) and outgoing Miniature Circuit Breakers (MCB) fixed to vertical bus bars in twin side arrangement.

Each panel board will include neutral and earthing bus bars sized as per regulations. Also the panel will include a number of spare circuit breakers as well as spaces for possible future loads.

Residual current circuit breakers shall be provided inside panel boards for protection of specific lighting and power circuits against earth leakage.

Each operating room will have its own isolation transformer panel to supply 220V services to the medical outlets in it. Each panel contains low leakage isolation transformer.

An isolation transformer shall not serve more than one operating room. Except, where a machine room serves more than one operating room, in this case the isolated circuits from the machine rooms shall be permitted to be supplied from the isolation transformer of any one of the operating rooms served by that machine room.

The intensive care units and coronary care panels incorporate the same components and features as the operating room panels, in addition to features of power

receptacles and grounding jacks which connected to ground bus for attaching fixed equipment and building structural grounds.

Each isolation panel shall be equipped with visual and audible alarm indicator for the staff in case of earth leakage current from any of connected appliances to the panel.

1. Motors and Motor Control

1. Motor Supply:

Motors below 1HP rating will be single phase, 220V unless otherwise required specifically.

Motors of 1 HP and above will be 3-phase 380 volts 50Hz.

2. Starters

Starters for single-phase motors will be of the magnetic type fitted with overload element.

Starters for 3 phase motors will be of the magnetic type with one overload element per phase and under voltage relay to disconnect the power supply automatically in case the drop in voltage exceeds 15%.

Motors with nameplate rating up to 10 HP will be connected to direct on line starting with over current protection.

Motors with nameplate rating 10 HP and above will be arranged for reduced voltage starting, star/delta starting or soft starting depending on the motors ratings and mechanical works requirements.

Where possible motor starters will be grouped in motor control centres together with their associated control and monitoring units and protective devices.

Variable frequency / variable voltage devices will be used to drive the motors following mechanical design recommendation.

3. Motors Protection

All motors will be provided, on their own starters circuits, with overload element devices.

Motors rated 15 HP and above will be equipped with thermostatic control elements inside the motor enclosure actuating directly through control circuit of the motor to disconnect it from the supply in event of temperature rise exceeding acceptable limits for its insulation class.

All three phase motor starters will incorporate phase failure device (under/over voltage, phase failure, phase rotation, phase voltage unbalance)

Suitable means of isolation will be provided and located at close proximity to each motor in remote position from the protective device. When the isolation switch is opened, it will isolate all sources of power and control supply to that motor.

8. Isolated Power System (IPS)

Isolated power supply system consists of an isolated transformer, a line isolation monitor and its ungrounded circuit conductor.

Each isolated power circuit shall be controlled by a switch that has a disconnecting pole in each isolated circuit conductor to simultaneously disconnect all power. Such isolation power system panel shall be accomplished by means of one or more transformers having no electrical connection between primary and secondary windings.

IPS circuits are intended to provide resilience against unnecessary disconnection of the final sub-circuit such as when transient faults occur. The aim is to reduce the risk of mains supply disconnection where critical life support equipment used whose continuous operation is necessary to maintain a patient's life.

IPS circuits do not provide protection against micro shock but they do offer a higher level of protection against electric shock; this is merely a benefit, not a reason to fit IPS.

Circuits supplying primaries of isolating transformers shall be provided with proper overcurrent protection. All circuits supplied from such secondaries shall be ungrounded (if electrostatic shield is present, it shall be connected to the reference grounding point) and shall have an approved overcurrent devices of proper ratings in each conductor.

In addition to the usual control and overcurrent protective devices, each isolated power system shall be provided with a continually operating line isolation monitor that indicates total hazard current. The monitor shall be designed so that a green signal lamp, conspicuously visible to persons in each area served by the isolation power system (like nurse station), remains lighted when the system is adequately isolated from ground. An adjacent red signal lamp and audible warning signal (remote if desired) shall be energized when total hazard current (consisting of possible resistive and capacitive leakage currents) from either isolation conductor to ground reaches a threshold value of 6 mA under normal line voltage conditions. The line monitor shall not alarm for a fault hazard of less than 3.7 mA or for a total hazard current less than 6 MA as per NFPA 99 item No 4.3.2.2.9.5.

The line isolation monitor shall be designed to have sufficient internal impedance such that, when properly connected to the line isolated system, the maximum internal current that can flow through the line isolation monitor, when any point of the isolated system is grounded, shall be 1 mA.

An ammeter calibrated in the total hazard current of system (contribution of the fault hazard current plus monitor hazard current) shall be mounted in a plainly visible place on the line isolation monitor with the alarm ''alarm on'' zone at approximately center of the scale.

The line isolation monitor shall be permitted to be a composite unit, with a sensing section cabled to a separate display panel section on which the alarm or test functions are located.

In operating theatres and recovery rooms it is desirable to locate line isolation monitor inside the room so that it is conspicuously visible to persons and nurses.

It is highly recommended that, the socket-outlets which connected to the IPS are color-coded blue, engraved in white lettering '' medical equipment only''. This avoids the use of these socket-outlets to connect equipment not comply with IEC 60601-1 (BS EN 60601) in the patient environment. The non-compliant equipment can process high earth leakage currents resulting in a higher risk to patients.

9. Grounding System

The grounding configuration is TN-S system to I.E.E regulations.

A ground source will be provided at transformer substation to provide earthing means for all non-current carrying metal parts. Separate earthing for the neutral of the transformers and the MV switchgear will be provided as per regulations.

The earth source will consist of multi earth electrodes in approved pits, which will be interconnected by bare copper conductor cable directly buried in ground.

Ground bus bar will be provided at the main distribution board(s) cubicles and motor control centers and will be linked to the neutral bar using two removable links.

Protective earth conductors will run separately from the earth bus bar of the main distribution board(s) to the distribution panels and panel boards earth bus bars.

A complete system of separate protective earthing conductors will be provided in all installations for earthing of medical equipment, lighting fixtures, and socket outlets.

A copper tape forming ring earth conductor or equalizing bar shall be provided in all mechanical rooms.

Clean and separate earthing systems shall be provided for Low current and communication systems.

All grounding materials will be made of copper or approved copper alloys. Earthing cables shall be copper, PVC insulated (green / yellow). Where connections are un-accessible, thermo-welding shall be applied. Earth pits and covers shall be heavy-duty type to support heavy vehicles' weights, each at its location.

Each electric appliance shall be provided with a grounding conductor in its power cord, coordination with medical suppliers to be followed by Client.

The grounding system for service building will be TN-S which described above.

1. Grounding System Design Criteria

Since there are different locations inside the hospital like medical, non medical locations, mechanical and electrical locations, so the locations inside the hospital will be classified into three main groups; group 0, group 1 and group 2 locations. Each location shall have its own requirements in the grounding system as follows:

Group 0 Locations: is defined as non medical locations or medical locations where no applied parts exist.

Applied parts defined as parts of the medical electrical equipment which in normal use necessarily comes into physical contact with the patient for equipment to perform its function; or can be brought into contact with the patient; or needs to be touched by the patient.

Group 0 locations include corridors, lobbies, waiting areas, staff rest, electrical and mechanical rooms, HVAC equipment, administration department, stores, clean and dirty utility, Gem and nurse stations.

The grounding system for group 0 locations will be TN-S system as described in details above.

Group 1 locations: is defined as medical locations where discontinuity (failure) of supply is not a threat to human life.

Group 1 locations include clinic rooms, patient rooms, consultant, lighting and general-use receptacles power circuits inside ICU's and examination rooms.

The grounding system for group 1 locations will be TN-S system but the final branch lighting or power circuits up to 32A are protected against earth fault current using earth leakage circuit breaker with maximum residual operating current of 30mA.

Refer to Appendix '' C'' for principal's schematic diagram of grounding system connections in group 1 locations.

Group 2 locations: is defined as medical locations where discontinuity (failure) of supply can cause danger to patient's life.

Group 2 locations include operating theatre, operating preparation room, recovery room, cardiac catheterization room, coronary care unit, magnetic resonance imaging and branch circuits serving head bed units inside ICU's, intermediate ICU's, emergency department, and treatment .

In medical locations group 2, the medical IPS system without any external residual current devices shall be used for circuits supplying medical electrical equipment and systems intended for life support, surgical applications, (active, bipolar and dispersive electrodes) and other equipment located in the 'Patient Environment', which is defined by any volume in which intentional or unintentional contact can occur between patient and parts of the system or between patient and other persons touching parts of the system.

The use of isolating transformers creates a safer environment to the patient and staff by minimizing hazards from touch voltages and ensuring continuity of supply under

single fault conditions. Isolating transformer alone is not intended to protect against microshock and must be associated with line isolation monitor, supplementary equipotential grounding bus (bar).

The output of the isolating transformer is kept free from any earth connection (ungrounded). This concept affords better protection from potentially lethal shock hazards due to the absence of low impedance earth return path. However, due to the capacitance of the line conductors to earth, there will always be capacitive current flow to earth.

Conventional residual current device protection is not suitable on final circuits supplied from medical IPS. On single (first) fault condition a low capacitive current (a few mA) will flow to earth which is insufficient to trip 30 mA RCD. Under double fault conditions the RCD would not trip as no imbalance is detected.

Care shall be taken to ensure that simultaneous use of many items of such equipment connected to the same circuit cannot cause unwanted tripping of the residual current protective device (RCD).

In medical locations of group 1 and group 2, where RCDs are required, only type A or type B shall be selected, depending on the possible fault current arising. Type 'A' ensures tripping for residual sinusoidal alternating currents and residual pulsating direct currents; whether suddenly applied or slowly rising. Type 'B' ensures tripping for residual sinusoidal alternating currents and residual pulsating direct currents and smooth direct currents.

In medical locations of group 1 and group 2, supplementary equipotential bonding conductor shall be installed and connected to nearest separate medical grounding bus for the purposes of equalizing potential differences between the following parts located in the patient environment protective conductors, extraneous-conductive-parts, screening against electrical interference fields if installed, connection to conductive floor grids if installed and metal screen of the isolating transformer if any.

In medical locations of group 2, where intracardiac procedures may take place the resistance of the conductors, including the resistance of the connections, between the terminals for the protective conductor of receptacles and of fixed equipment or any extraneous-conductive-parts shall not exceed 0.2Ω. This ensures that the maximum permissible potential difference between the exposed-conductive-parts of medical electrical equipment and the medical grounding bus within the limits designated for group 2 locations, normally below 50 mV to receptacle outlet

Refer to Appendix ''D'' for principal's schematic diagram of grounding system connections in group 2 locations.

Important note: allocations of group numbers and classification of safety services to a medical location shall be made in agreement with the medical staff and the body responsible for safety. In order to determine the classification of a medical location, it is necessary that the medical consultant and medical staff indicate which medical

procedures will take place within the location. Based on the intended use, the appropriate classification for the location shall be determined.

Grounding circuits and conductors in patient care areas shall be installed in such a way that the continuity of other parts of those circuits cannot be interrupted nor the resistance raised above an acceptable level by the installations, removal, and replacement of any installed equipment, including power receptacles.

The equipment grounding terminal buses of the normal and essential branch-circuit panel boards serving the same individual patient vicinity shall be bonded together with an insulated continuous copper conductor not smaller than 4mmsq. Where more than two panels serve the same location, all earth bars inside these panel boards shall be connected to the same ground bus.

A patient vicinity shall be permitted to have a patient equipment grounding point, where supplied, shall be permitted to contain one or more jacks listed for the purpose. An equipment bonding jumper not smaller than 4 mmsq shall be used to connect the grounding terminal of all grounding-type receptacles to the patient equipment grounding point (bar). The bonding conductor shall be permitted to be arranged centrically or looped as convenient.

In some locations like outpatient clinic rooms and inpatient rooms (where no medical active electrodes are used), there is no patient equipment grounding bar inside the room. Therefore, it is important that the distance between the reference grounding bar (located in common area like electrical room) and the patient vicinity be as short as possible to minimize any potential differences.

The equipment grounding conductor for special-purpose receptacles, such as the operation of mobile X-ray equipment, shall be extended to the reference grounding points (bar) of branch circuits for all locations likely to be served from such receptacles. Where such a circuit is served from an isolated ungrounded system, the grounding conductor shall not be required to be run with the power conductors; however, the equipment grounding terminal of the special-purpose receptacle shall be connected to the reference grounding point.

10. Lighting System

1. Generally

The general arrangement and type of lighting fixture will be selected to suit the specific room requirements in accordance with CIBSE Code of Lighting. The lighting layout will be coordinated with the ceiling grid and with other services in the ceiling.

Fluorescent tubes will be generally used in offices, corridors, stores, mechanical and electrical rooms, toilets, etc, while other warmer light sources, mainly compact fluorescent will be used in other areas where warmer light colour is preferred like lobbies, lounges, etc.

Patient room shall have general lighting and emergency light outlet for bed head unit lighting which will be provided for each patient, refer to Appendix “E” for proposed patient room lighting layout (bed head unit will be furnished by client)

Glare shall be kept to a minimum through the correct selection and positioning of luminaries.

Lighting calculations shall be based on lighting design lumens, LDL.

In general all branch circuit wiring for lighting installation will be of 2.5mm2 PVC insulated wires protected by 10/16 Amp. Circuit breakers.

Anti-bacteria luminaries IP-65 with colour corrected fluorescent lamps and glare free optical diffuser will be used inside operating rooms, cardiac catheter operation rooms, recovery rooms and Laboratories.

TL5 lamps will be used, as applicable, to achieve the required lighting level with lesser wattage than normal fluorescent lamps.

Lighting fixtures will be provided with electronic ballast and power factor capacitor where applicable.

2. Illumination Levels:

As mentioned earlier, the levels of illumination and types of light sources will be in general based on the recommendation of the British Code for Interior Lighting.

Following is the recommendation for basic room classifications

Table (T-10.2.A)

Area DesignationIllumination Level

(lux)Switching & type of luminaire

Electrical and Mechanical rooms 200 Locally switched & fluorescent

Stores, lockers 200 Locally switched & fluorescent

Offices 500 Locally switched & fluorescent

Toilets 150 Central& fluorescent

Stairways 200 Central & fluorescent.

Kitchen, pantry, 500 Locally & fluorescent

Table (T-10.2.B)

Medical Services Areas Illumination Level

Area DesignationIllumination Level

(lux)Switching & type of luminaire

Corridors 200 lux Central& fluorescent

Examination room 500 (1000 local) lux Locally switched & fluorescent

Treatment room 500 (1000 local) lux Central& fluorescent

X-ray rooms 300 lux Locally switched & fluorescent

I.C.U. 300-500(general) lux

Locally switched & fluorescent

Patient room 100 (general) lux Locally switched & fluorescent

Mortuary 300 lux Locally switched & fluorescent

Pharmacy 300 lux Locally switched & fluorescent

Nurse stations 300(500 local) lux Locally switched & fluorescent

Medical stores 200 lux Locally switched & fluorescent

Operating Rooms 500-1000 (general) Central panel & anti-bacteria fluorescent.

Laboratories 500 lux Locally switched & fluorescent

Main Sterilize 300 lux Central & fluorescent

Triage 500 lux Locally switched & fluorescent

Dirty utility 250 lux Locally switched & fluorescent

Clean utility 250 lux Locally switched & fluorescent

Trolley park 300 lux Central & fluorescent

hydrotherapy 300 lux Locally switched & fluorescent

Observation ward 300 lux Locally switched & fluorescent

Incubator ward 300 lux Locally switched & fluorescent

Clinic 500 lux Locally switched & fluorescent

3. Emergency Lighting Luminaries

Specific Emergency, maintained/non maintained luminaries will be provided for all public areas, exits, stairs and escape routes.

The exit lights will maintain a minimum of 10 lux along escape routes throughout to lead all occupants to exits. Emergency lights will be equipped with fluorescent tubes or compact lamps.

In patient rooms, intensive care unit, clinic and treatment rooms the essential lighting connected to diesel generator shall be 30-50% of the total lighting.

4. Luminaries Selection Criteria

Luminaries will be the standard products of reputable manufacturers, and will be the best of their respective kind.

All fluorescent luminaries will be equipped with power factor correction capacitors (if not provided with electronic ballast).

Signage and facade luminaries shall be weather proof type.

The protection class of all luminaries will be specified according to the location where they are installed and it can be classified to three levels of luminaries to ensure the optimum matching of performance with the following requirements:

A- Extreme requirements: as in Operating theatres, pre-op and recovery rooms and laboratories are among the most critical of areas. Therefore, the selected luminaries shall have protection rating IP 65, absence of germs, anti-bacteria, resistance to disinfectants and cleaning agents, operation unimpaired by positive or negative pressure containment systems, glare free and the ability to be installed flush in the ceiling.

B- Exacting requirements: as in the closer the rooms are in contact with operating theatre or laboratory areas, the more exacting are the requirements placed on surrounding areas such as intensive care units, treatment and observation wards, accident and emergency wards, resuscitation, consultant rooms, doctor rooms and outpatient clinic. The selected luminaries for these rooms shall provide the clean-rooms requirements compatibility such as, protection rating IP 65 from below, re-sistance to disinfectants and cleaning agents, operation unimpaired in areas where there is positive or negative pressure containment.

C- Increased requirements: Even outside critical areas in hospitals as in corridors and nurse stations there is demand for luminaires that have special hygiene and cleaning features as well as increased protection ratings.

5. The Selected Luminaires Schedule

A- Luminaires for extreme requirements areas: Light source is fluorescent lamps TL-5 2X35W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 90 and with electronic ballast. Housing made of welded sheet steel with white antistatic coating resistant to oil vapours, chemical substances, cleaning agents and disinfectants, IP 65, anti-bacteria. Diffuser made of 4mm safety glass micro-pyramidal optic in multi-layer with glare free light emission.

B- Luminaires for Exacting requirements areas: Light source is fluorescent lamps TL-D 4X18W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 90 and with conventional ballast. Recessed housing made of welded sheet steel with internal and external electrostatic white paint, IP 65. Diffuser made of prismatic plastic cover from heat resistant type, reflector covered with acrylic sheet.

C- Luminaires for Increased requirements areas: similar to luminaires for exacting requirements but with light source fluorescent lamps TL-5 4X14W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 85 and with electronic ballast.

D- Luminaires for administration areas, offices, archive and reporting: Light source is fluorescent lamps TL-5 4X14W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 85 and with electronic ballast. Recessed housing made of sheet steel with internal and external electrostatic white paint, IP 20.

E- Luminaires for general waiting areas, staff lounge, meeting room and hospital secondary entrances: recessed down light, Light source is compact fluorescent lamps PL-C 2X26W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 82 and with electronic ballast. Constructed from polyester gearbox (gear cover polypropylene), High purity anodized aluminium reflector, IP-44 or IP-20 upon the location.

F- Luminaires for mechanical and electrical rooms, clean and dirty utility, stores and house keeping rooms: functional shock, vandal dust and jet proof ceiling mounted or suspended luminaire. Light source is fluorescent lamps TL-D 2X36W,220V,50HZ, colour temperature 4000K, colour rendering index (Ra) 85 and with conventional ballast. Housing made of fiber-glass reinforced polyester grey with white reflector and polycarbonate prismatic clear cover, IP-66.

G- Luminaires for escape route emergency exit lighting: wall or ceiling mounted IP-65 with or without (according to the location) one or two side pictogram. Light source is 8 watt lamp, 220V, 50Hz, maintained or non-maintained (upon the application) with addressable ballast connected to central battery system. Case made of self-extinguishing polycarbonate, double insulated. Viewing distance not less than 26 meter.

H-Luminaries for chillers hall inside services building: industrial type low-bay wide beam luminaire. Light source is metal halide lamp HPI 1X250W, 220V, 50HZ, colour temperature 4300K, colour rendering index (Ra) 69 and with conventional ballast. Constructed from Die-cast aluminium gear housing, aluminium matt finish reflector, stainless steel clips on gear unit, IP-65, with 4mm tampered glass cover.

I-Luminaires for outdoor flood light, landscape and façade lighting: Light source is metal halide lamp HPI 1X250W, 220V, 50HZ, colour temperature 4300K, colour rendering index (Ra) 69 and with conventional ballast. Constructed from non-corrosive, high-pressure Die-cast aluminium housing, pre-anodised aluminium reflector, IP-65. Hot-Dipped galvanized steel mounting bracket.

J-Explosion proof luminaries will be used in anesthetizing hazards locations like (gas store).

Other luminaries will be specified during detailed design stage.

6. Operating Theatre

Special surgical luminaries will be purchased by Client to provide 10,000-160,000 lux in the operating field. Lighting outlet for it will be installed.

Operating theatre lighting consists of three components: general lighting designed to produce 500 lux for the room in general, surround lighting generating 1000 lux for intermediate surroundings of operating table approximately 3x3 meters cantered on the operating table and lighting for the operating field designed to deliver 10.000 to 160.000 lux, depending on the kind of operation being performed. Ceiling luminaries clustered as tightly as possible around the operating table avoid glare and prevent shadows being cast by members of the surgical team.

The following reflectance values are considered: ceiling>0.7; walls>0.5; floor>0.2; masking sheets and the surgical team's clothing and gloves>0.3. All surfaces-especially those of surgical instruments should be matt finished.

Excessive differences in luminance levels when lines of sight switch between the operating field and the surrounding area may result in eye adaptation problems. The solution is to graduate the lighting level in the room. The selected luminaries response to the ever growing number of visual display terminals inside operating rooms is optics that are in conformity with relevant standards and eliminate annoying reflections on screen surfaces.

In order to protect the physicians and medical staff inside the operating rooms from any uncomfortable eye adaptation problems when goes outside the operating rooms, the luminance levels in the corridors surrounding the operating rooms will have 500 lux to avoid any excessive difference in the luminance level.

Refer to Appendix “I” for proposed operating room lighting layout

7. Patient's Rooms

The lighting requirements of patient's rooms are met by a number of separately switched lighting systems:

General comfort lighting: the general lighting shall create a comfortable atmosphere and be sufficient for the performance of simple nursing duties. One down light 2x26

compact fluorescent IP-44 will be fitted at the room entrance to provide 200 lux at the entrance. One decorative down light wall mounted will be installed above room mirror for good vision of the TV without affecting patient eyes. Light stand IP-54 will be installed near visitor's chairs (60 Watt light outlet will be considered for that light stand). No lighting fixtures will be installed at the ceiling above patient to make sure patient in bed is not dazzled by the direct lighting.

Reading lighting for the patient: it will be built in the bed head unit which will be furnished by the Client. 100 Watt light outlet connected to essential supply will be provided in the design for lighting of bed head unit. 300 lux illuminance is required.

Examination and treatment lighting: it will be also built-in the bed head unit. The illuminance needed for beside medical and nursing tasks can be provided jointly by all the lighting system components in the room.

Night lighting: wall 9Watt lighting fixture for night lighting connected to central battery system shall be switched at the entrance to each patient room for helping patient find his way at night without disturbing others in the room also to enable nursing staff to move around patient safely. This luminaire is recessed in wall at level below the bed level to make sure patient in bed are not dazzled by the lighting beams.

Refer to Appendix “E” for proposed patient room lighting layout.

8. Recovery rooms

In recovery rooms, 300 lux illuminance is adequate for general lighting, which needs to be shielded along patient's lines of sight to minimize the risk of glare. Supine patients recovering from surgery should not be dazzled by direct light from ceiling luminaries. Recovery rooms require subdued lighting for patients in recovery phase and bright lighting for monitoring and emergency procedures. The risk of patient being temporarily dazzled by bright lights cannot be always being avoided. However, recessed in ceiling 2x36 watt anti-bacteria luminaries will be used and dazzling lights over patients must never be ''ON'' for longer than is absolutely necessary. 30% of the luminaires in recovery rooms will be connected to the essential supply.

9. Intensive Care Units

Rest of severely ill patients, constant patient monitoring and fast response times in emergencies, these are key requirements in an intensive care unit (ICU). The different conditions required are met by general lighting designed to permit three different lighting levels:

Predominantly indirect lighting: providing low 100 lux illuminance for the kind of comfort lighting designed to promote convalescence in ordinary wards. It will be built in the bed head unit which will be furnished by the client. 100 Watt light outlet connected to essential supply will be provided in the design for lighting of bed head unit.

Supplementary direct lighting: each ICU room will contain 5 or 6 (upon room area) 4x18 Watt recessed in ceiling fluorescent luminairs IP-65 with prismatic cover (50% of the

luminairs connected to the essential supply). This combination shall produce 300 lux when one circuit is ''ON'' and 500 lux approximately when the two circuits are ''ON'' for general lighting or examination and treatment.

Observation light: It will be built in the bed head unit which will be furnished by the client. As mentioned above, 100 Watt light outlet connected to essential supply will be provided in the design for lighting of bed head unit. It gives 1000 lux luminance at emergencies. This is achieved either by activating more illuminance or by switching ''ON'' all the ceiling luminaries in conjunction with lamps in the bed head unit.

In rooms where patients are monitored through observation windows, the level of lighting needs to be significantly lower than in the room being monitored. Also, care must be taken to ensure that the lighting does not cause glare or visual interference due to reflections on the glass.

Lamps are chosen in intensive care units with 4000K colour temperature and colour rendering index not less than 90.

10. Rehabilitations and therapy

In rooms used for physical radiological or electromedical procedures, physiotherapy, massage, medicinal packs, hydrotherapy, Gem and radiotherapy, general lighting of 300 lux illuminance will be provided. Lighting shall also take account of the special requirements of particular therapies. Where water is used, for example in damp or wet patches on floor like in hydrotherapy, it shall be made clearly visible to reduce the risk of accidents.

11. Laboratories, blood bank and pharmacy

The need for accurate identification and caution in laboratories, blood bank and pharmacy means that good visual conditions are required in the immediate vicinity of the work place. This calls for 500 lux illuminance, good glare limitation and optimal colour rendering index not less than 90. Recessed in ceiling 4x18 watt fluorescent anti-bacteria luminaires will be used with colour temperature of 4000K. Workplaces where work involves matching colours are an exception. Reliable analysis of laboratory samples and test calls for day-light white lamps with colour temperature above 6,000 degrees Kelvin as well as 1000 lux illuminance. An assessment shall be made for any special light outlets needed in laboratories or pharmacy. This assessment will be undertaken into consideration with the medical consultant, clinical and engineering staff.

12. Kitchen And Laundries

Kitchen requires 500 lux in the food preparation area and 300lux in the adjacent areas for general lighting; for laundries, 300 lux is adequate. In both, the presence of steam makes it advisable to use luminaires for damp interior, which are protected to IP-65.

13. General Examination And Treatment Rooms

For general examination and treatment rooms, 500 lux illuminance is enough to meet general lighting requirements, but 1000 lux is required for patient examination. This task can be provided by positioning fixed or portable examination luminaries at the treatment trolley. 100 Watt light outlet connected to essential supply will be provided for fixed examination luminaires, and it will be coordinated with the medical consultant for best location of the light outlet.

14. Outpatient department and Clinic rooms

In outpatient departments and clinic, examinations are conducted as treatment provided for all kinds of ailments. So the rooms in outpatient department have basically the same lighting requirements as examination and treatment rooms. Except for examination luminaries, there should be no general lighting luminaries positioned directly over the treatment trolley. Each Clinic room will contain 5 or 6 (upon room area) 4x18 Watt recessed in ceiling fluorescent luminaires IP-65 with prismatic cover. 50% of the luminaries shall be connected to the essential supply. This combination shall produce 300 lux when one circuit is ''ON'' and 500 lux when the two circuits are ''ON''. 100 Watt light outlet connected to essential supply will be provided for fixed examination luminaires beside examination trolley.

15. Switching

Lighting control shall be provided via:

Local switching for every patient room, clinic, ICU's, offices, room/area.

Override push button and contactor per corridor floor/zone.

The material and finish of cover plates of switches will match with the cover for socket outlets, telephone, data, etc. The finishing of these cover plates are subject to interior designer approval.

Weather proof switches will be used in common toilets and wet areas.

11. Central Battery System

1. System Operation

In mains healthy condition, the system charges the batteries to store energy, ready for emergency operation and the power to luminaries designated for emergency use (escape route and exit) are supplied from the normal mains, via a by–pass contactor inside central battery cubicle. These fittings may be switched or non switched type.

In case of mains failure, the system provides emergency power from central battery to emergency luminaries.

2. Number of lighting Fittings

20 lighting fittings can be connected to each circuit originating from central battery panel board. Adequate protection devices will be provided for each of these circuits.

3. Battery Type

The most popular battery type is valve regulated lead acid with a 10 years design life. This type of battery is used on approximately 90% of projects due to its competitive cost, good life characteristics, ease of maintenance and compact size.

4. Fire Protection Of Cables

Cables shall be routed through areas of low fire risk. The following cables and wiring systems shall be used:

Fire rated cables in accordance with BS 6004 in rigid conduits.

PVC-insulated cables in accordance with BS6004 in steel conduit.

1. Run time for the batteries:

System is to secure a minimum period of continuity of no-break battery back-up for 3 hours at power rating of the system in case of failure of normal power supply and maintain output voltage, frequency within specified tolerances.

It is to be static, solid state self testing, self diagnostic type, suitable for the connected load category which consists mainly of fluorescent and compact fluorescent lamps. The system is to be of active standby type to ensure continuous monitoring of the inverter output under healthy power supply conditions.

It shall comprise complete rectifier/charger – battery – inverter system with automatic change-over static switch to secure emergency AC power supply for feeding emergency lighting load in the event of normal power failure

Refer to Appendix ''L'' for principal's schematic diagram of Central battery system.

12.UPS SYSTEM

UPS system will be provided to feed the life support equipment and data system to ensure that the electrical supply is not interrupted between a supply failure and the generator's starting.

UPS batteries will be of the sealed Lead Acid type. UPS equipment will comply with BS EN 50091 and BS EN 62040.

UPS will be provided to critical and essential areas such as operating theaters, and IT Department. UPS equipment will be located in dedicated rooms.

UPS will be on-line, consisting of 6-pulse rectifier with filter to limit input feedback harmonic currents to maximum 7%, IGBT inverter, fully rated static switch, manual bypass switch, and sealed lead acid valve regulated battery with 30 min back-up time. System is to be N+1 parallel redundant.

In addition, a separate UPS system will be provided to feed administration and hospital information computer and data outlet loads.

Separate battery and charging sets will also be provided by relevant system suppliers to maintain electricity supplies at mains failure period to low current systems such as main fire alarm control panel, nurse call system, master clock, EPABX……etc.

13. Power Outlets and Wiring Devices

In general, general-purpose convenience outlets will be provided on walls. Separate wire ways will be provided for power circuits wiring and low current systems wiring.

The cover plates for the normal electrical receptacles and the electrical receptacles supplied from the emergency system shall have a distinctive color or marking so as to be readily identifiable.

An assessment shall be made for the number of socket-outlets required for the medical process which may take place in the area of the fixed medical equipment. This assessment will be carried out in close coordination with the medical consultant and engineering staff.

The number, type and location of socket-outlets, including those in the control area and any other equipment rooms, will be sufficient to avoid the need for extension leads and trailing wires, taking into account of possible extra equipment to be installed/used such as computers that act as part of the hospital information technology system and image display equipment.

The medical consultant shall recommend the number of the socket-outlets that will be fed from isolated power supply (IPS) circuits, and other circuits protected by residual current devises (RCDs).

As a colour and shape coding for socket outlets inside the hospital, it is proposed that all the sockets that connected to normal power supply will be 16 Amp while the socket outlets connected to essential supply will be 13 Amp. The cover plate shall have a distinctive colour or marking to be readily identifiable.

1. Patient's Rooms

Each patient room will be fed from separate circuit breaker box located outside the room above false ceiling through access door in the false ceiling according to the architectural consultant recommendation.

The circuit breakers box shall have three compartments, the first compartment will contain the circuit breakers feeding the normal loads (power and light), second compartment will include the circuit breakers feeding the essential loads (power and light) and the third compartment will have the circuit breaker feeding emergency lighting fixtures connected to the central battery.

Normal loads compartment shall have incoming miniature circuit breaker fed from earth leakage circuit breaker inside the normal panel board located in the floor

electrical room, and outgoing miniature circuit breakers supplying the normal loads as indicated in Appendix “H”. The same arrangement will be followed for the essential compartment.

Branch circuits serving head bed units inside patient's room will be fed from two separate circuits having the same phase, one circuit from the normal panel and the other circuit from the essential panel. These two separate panels have to be connected to the same transformer to avoid any voltage difference or phase shift between the two circuits.

Head bed unit inside patient's room will be furnished by the client and shall be equipped with minimum of four receptacles. Two receptacles will be connected to the normal supply and the other two receptical to the essential supply. Receptacles shall be of the single or duplex type or combination of both. All receptacles whether four or more, shall be listed ''tamper-resistant hospital-grade'' type and so identified. Each receptacle shall be grounded by means of a 4 mmsq insulated copper conductor sized in accordance with table 250.122 in NEC.

Patient room shall have as a minimum 5 receptacles as follows: one located on each side of each bed for its operation; one on high level for television set when required and one receptacle for general use purposes and other one connected to essential supply for refrigerator if applicable; refer to Appendix “F” for proposed patient room power layout.

Receptacles shall not be required in patient room toilet.

All light and power loads inside the same patient room will have the same phase from the same utility transformer.

2. Intensive Care Units

Branch circuits serving head bed unit inside ICU's will be fed from three separate circuits and each circuit coming from separate isolated power supply IPS.

These three circuits shall have the same phase, one circuit from the normal panel, one circuit from the essential panel and the other circuit from UPS panel. These three separate panels have to be connected to the same utility transformer to avoid any voltage difference or phase shift between the three circuits.

The UPS and essential branch circuits feeding the head bead unit inside ICU's are supplied from two different automatic transfer switches to have a higher reliability inside these critical care areas and to save the patient's life in case of any failure happened in the automatic transfer switch.

The UPS branch circuit will feed the electrical life support equipment whose continuous operation is necessary to maintain a patient's life.

Head bed unit inside ICU's will be furnished by the Client and shall be equipped with minimum of six receptacles. Two of them will be connected to the normal supply, two connected to essential supply and the last two receptacles connected to the UPS,

Receptacles will be of the single or duplex type or combination of both. All receptacles whether six or more, shall be listed ''tamper-resistant hospital-grade'' type and so identified.

In the hospital, each ICU in the same department like in pediatric burn care department or in cardiac care department will be fed from 9 isolated power system each have 2400 VA isolation transformer.

The nine transformers will be distributed such that: three transformers connected to normal supply, another three connected to essential supply and the last three connected to the UPS system. Each one of the normal three transformers is connected to a separate phase, one connected to red phase, the second one connected to yellow phase and the last one connected to blue phase. The same will be followed for the other six transformers. This arrangement will assure that all medical and non-medical receptacles inside ICU having the same phase from the same utility power transformer.

3. Anesthetizing Locations And Gas Store

Any room or location in which flammable anesthetic or flammable disinfecting agents are stored or flammable gases may be present in the air in quantities sufficient to produce explosive or ignitable mixtures shall be considered hazardous locations Class 1, Division 1 from floor to ceiling according to article 500 NEC 2008, therefore explosion proof receptacles and luminaires will be used in Gas store in the basement floor.

Each power circuit within or partially within, a flammable anesthetizing location as refer to above shall be isolated from any distribution system by the use of an isolated power system.

In any anesthetizing area, all metal raceways and metal sheathed cables and all non-current-carrying conductive portions of fixed electric equipment shall be grounded.

Cart, tables, and other nonelectrical items are not required to be grounded. In flammable anesthetizing locations, however, portable carts and tables usually have a resistance to ground of not over 1,000,000 ohms, through the use of conductive tires and wheels and conductive flooring, to avoid the buildup of static electrical charges.

4. Laboratories

Power outlets shall be installed in accordance with NCCLS standard ASI-5, Power Requirements for Clinical Laboratory Instruments and for Laboratory Power Sources. Duplex power receptacles will be installed every 0.5 to 1m in instrument usage area, and either installation is to be at least 8 cm above counter top.

Portable equipment intended for laboratory use shall be provided with an approved method to protect personnel against shock.

5. General

For circuits protected by RCDs such as circuits feeding the circuit breaker box for patient's rooms, ICUs and outpatient Clinics; consideration will be given to the risk that aggregation of leakage currents from several items of equipment connected to the same circuit may cause unwanted tripping of the RCD. For that reason the FCU supplying the room is removed from the connection to the circuit breaker box and protected directly by a dedicated circuit breaker in power panel at the floor electrical room near that patient's room, to avoid any unwanted tripping due to the leakage currant inside the FCU.

General-purpose 16 Amp socket outlets, to BS 1363, will be provided in general areas as corridors.

Plastic accessory boxes shall be used in diagnostic or treatment rooms for socket outlets to prevent the introduction of potential or current from the building earth.

Socket-outlets located within the patient care areas of pediatric wards, rooms, or areas shall be listed tamper resistant or shall employ a listed tamper resistant cover.

All receptacles and fixed equipment within the area that are designated patient care wet locations by governing body of the facility shall have ground fault circuit interruption protection for personnel if interruption of power under fault conditions can be tolerated. Otherwise, served by an isolated power system if such interruption cannot be tolerated.

Splash proof socket outlets will be provided in wet and humid locations. Industrial type single and three phase socket outlets will be specified for mechanical rooms.

Cover plates used for weatherproof installations in wet areas will be of the heavy duty PVC or satin finish steel type.

Branch circuit wiring for socket outlets will be loop connected, having a cross-sectional area of 4 mm2 and protected by circuit breakers.

Special purpose, adequately rated power outlets will be provided for fixed machinery equipment. Three-phase socket outlets will be provided where specifically required.

All electrically operated equipment requiring fixed connection or heavy electric power will be supplied by means of a flexible cord from a suitable disconnect switch, mounted adjacent to the equipment on the wall/steel frame.

14. Lightning Protection System

A lightning Protection System will be designed in conformity with British Standard Code of practice BS IEC 62305-4 “Protection of Structures Against Lightning”.

The roof termination network will be composed of bare annealed copper roof conductors forming a mesh with dimensions as called for in the regulations and connected to the down conductors.

Vertical copper tape or bare copper cable shall be used as down conductor.

Special independent earth source will be provided for the lightning protection system. The earth source will consist of multi-earth pits interconnected with bare copper conductor and will ensure an earth resistance less than 10 ohms. All non-current carrying metal parts installed on roof shall be bonded to the roof termination network. The lightning protection system will be bonded to all exposed metal structures and interconnected to the building earth electrode system as per code requirements.

15. Emergency Power Supply

In order to provide continuity of essential operation during mains power failure, standby diesel generators located in services building shall supply the essential loads in the project.

The generator sets shall have sufficient capacity and proper rating to meet the demand power load of the essential electrical systems at any given time.

Generators will be turbo-charged after cooled, class G3 to ISO 3046, with electronic governor, and having class H winding insulation with temperature rise not exceeding class F limits.

Loading of the Diesel Generator Sets shall be limited to 80% of its rating capacity.

The following electrical loads/systems shall be considered essential and shall be connected to the emergency power supply:

About 30% of the lighting and power loads at public areas.

About 50% of the lighting and general power loads at patient room, Clinic, patient I.C.U rooms.

100% of lighting stair ways, control and substation rooms.

Part of HVAC system Loads (Smoke fans and pressurization fans),

Sump pumps, make-up water pumps and domestic pump.

Elevators (one in each bank).

Total loads for Fire Alarm, operating rooms UPS, blood banks, intensive care unit medical equipment, hospital computer system, and Building control systems, including all low current systems.

Cold rooms, Mortuary loads, and basic laboratory functions.

One chiller, one secondary pump, one condenser pump, one cooling tower.

Generator transfer fuel pumps.

From the above the maximum expected demand load shall be met by two 1500KVA generator sets to ensure resilience to cover failure of one set and still supply life safety loads.

The generators shall be connected to deliver a reliable source of standby power and to ensure the availability of power to the above-mentioned loads.

Upon failure of mains power supply in the distribution substation, the diesel generating sets shall start automatically and provide emergency power supply to the selected emergency loads via Automatic Transfer Switches (ATS).

Each of the two generators will supply three separate ATS as follow:

1. Non-Delayed ATS

First ATS connected to each generator is a non delayed type ATS for supplying the following loads

Critical branch circuits fed from IPS in operating rooms, recovery rooms, treatment wards and ICU.

Medical life support equipments.

UPS systems.

Equipment utilizing anesthetizing gases.

Central suction system serving medical and surgical functions.

Compressed air systems serving medical and surgical functions.

Isolation power system connected to UPS.

Nurse call system.

Blood bank.

Generator fuel transfer pump and its accessories.

Fire alarm, central battery and life safety equipments.

2. One Minute Delayed ATS

The second ATS connected to each generator is a delayed type ATS not for more than 1 minute to supply the following loads

Essential branch circuits in patient rooms, ICU, treatment wards and other medical equipments connected to essential branch.

Lighting and power receptacles connected to essential branch.

Sump pumps and other equipment required to operate for the safety of the major apparatus.

Smoke control and stair pressurization systems.

Supply, return, and exhaust ventilating systems for airborne infectious / isolation rooms and anesthetic evacuation.

3. Two Minute Delayed ATS

The third ATS connected to each generator is a delayed type ATS not for more than 2 minutes to supply the following loads

Selected Supply, return, and exhaust ventilating system for surgical, ICUs and emergency treatment spaces.

Selected mechanical equipments like (FCU, one chiller, one cooling tower, one primary pump, one secondary pump and one condenser pump).

Elevators selected to provide services to patient, surgical and ground floors.

Heating equipment to provide heating for operating rooms, recovery room, ICU and emergency treatment spaces.

This sequence of loads reconnection is provided to avoid large current inrushes that may trip overcurrent devices or overloading the generators.

A time delay device shall be provided to delay the starting of the generators. The timer is intended to prevent nuisance starting of the generators with subsequent load transfer in the event of harmless momentary power dips and interruptions of the normal source. The time range shall be short enough so that the generator can start and be on the line within 10 seconds of the mains of failure.

Each Diesel generator shall be provided with 24 hours fuel tank.

16. Television Distribution System

1. Introduction

The System will be designed for patient rooms, lounges, waiting area .etc. Digital and Analogue signal will be distributed from Head End Equipment to every single point in the Hospital.

Each patient room shall have two Television outlets (one for each patient) and two head phone audio outlets; (one for each patient), refer to Appendix “G” for proposed patient room low current layout.

2. Regulations and Standards

Television distribution system will be in accordance with BSI code of practice BS 6330.

3. System Description

Input Signal will be transmitted through Head End Equipment (Dishes and Receivers), and via channel amplifiers and converters, signals will be distributed through the TV splitters and Tap off boxes to every TV outlet.

The system will be designed to function on field strength levels of local transmissions. The system distribution will be designed based on highest transmission frequency within the system and on a combined output level from the channel amplifier of 118 dBuv.

System shall receive all free to air channels

System shall have the possibility to add other channels in future.

SMATV shall consist and RF and IF distribution.

4. System Components:

The System Equipment will comprise the following:

Head End Station

Dishes

Converters

Amplifiers

Distribution network including Coaxial Cables, Splitters, Tap Off boxes, TV sockets, etc.

5. System Performance:

The system will meet the following performance requirements:

Minimum signal at TV receiver : 54db

Maximum signal at TV receiver : 84db

Signal to noise ratio : above 40db

All distribution network constituents are to be 75-ohm impedance matched.

17.Voice/Data System

Asfour Hospital shall be provided with an integrated computer and Voice over IP system. Outlets shall be RJ-45 with 4 pair UTP CAT6 structured cables.

Main distribution frame (MDF) will be provided for all building telephone lines, it will be located in I.T room in basement. It includes core switch, Power over Ethernet (PoE) switches, voice gateway, voice patch panels, data patch panels, servers….etc.

Two intermediate distribution frames (IDF) located in two I.T rooms will be provided at each floor for horizontal cabling distribution, the first IDF will serve the R.H.S of the hospital and the other will serve the L.H.S.

All voice and data Vertical backbone cabling from the Main Distribution frame located in IT equipment room to the floor intermediate distribution frames shall be multi core Cat. 6 cables fixed to galvanized cable trays.

Outlets locations shall be as per medical consultant loaded plans and final furniture layout drawings RJ-45 outlets will be connected to a voice and data patch panel within a horizontal distance not exceeding 90 meters.

Outlets will be one or two gang RJ45 type confirming to EIA/TIA on flush mounted plastic front plate similar to the wiring devices (socket and switches) finishes.

Computer software, hardware equipments, switches will be provided by Client.

System installation will be in accordance with TIA/EIA standards.

Egyptian Telecom Company telephone lines shall be provided to serve hospital hot lines and pay phones. External incoming lines route shall be proposed to the best knowledge of the consultant that shall be subject to Egyptian Telecomm Company approval during construction stage.

A dedicated UPS for data system with 30 minutes battery back-up will be provided.

For simplified schematic data and telephone riser diagram refer to Appendix ''M''.

Table (T-17)

Estimated telephone and data Outlets

1. Floor Telephone Data

Roof 3 -

7th Floor 96 10

6th Floor 96 10

5th Floor 96 10

4th Floor 97 10

3rd Floor 159 120

2nd Floor 130 100

1st Floor 119 94

Ground 105 95

Basement 50 26

Services building 30 20

Total 981 495

From the previous summary table 100/1200 Electronic Private Automatic Branch Exchange (EPABX) will be used.

100 external telephone lines will be provided.

Patient's room, shall have 2 telephone outlets; one for each bed head unit and two data outlets when required; one for each bed head unit, refer to Appendix “G” for proposed patient room low current layout.

In medical location RJ45 data outlet will be provided if the medical device is to be connected to data network. The device installer shall ensure that the network data

connection point is in accordance with relevant information provided by the device manufacturer and that the network data connection point itself satisfies any requirements specified by the device manufacturer .

The medical devices which have to be connected to data network, are indicated in medical room's data sheet dated 11-5-09 prepared by the medical consultant.

18. Public Address System

The sound system will be specified for medical staff and to provide paging and general background music in the public areas of various floors (Entrances, lobbies, corridors, waiting areas, etc.) through adequately distributed ceiling or wall mounted speakers.

The sound system will be composed of main sound system rack, and will include, sound mixer, sound sources (CD player, tuner, Tape recorder, and FM/AM antenna) and amplifier racks.

The distribution and specification of the sound system speakers as well as the rating of the power amplifiers will be selected to provide a high level of intelligibility and uniformity throughout the various spaces of the hospital. Moreover, the tapping of the speakers could be adjusted according to the final site installation conditions.

The system will be divided to separate zones such that:

Basement will be considered as one zone except prayer hall will have a separate prayer sound rack.

Ground, first, second and third floors: each of them will be divided to three separate zones.

From fourth up to seventh floors: each floor will be considered as a separate zone.

The system will also be linked to the main fire alarm control panel to mute the back ground music system in case of fire alarm reporting.

Refer to Appendix “N” for simplified Public Address System Schematic riser diagram.

19.Nurse Call System

Clinical areas such as Patient Wards, Op. Theaters…….etc. will be furnished with an addressable nurse call system with two way communication to enable patients to call nurses and for nurses/staff to call for assistance (Code Blue).

At each nurse station a control panel with alarm buzzer will be provided to indicate which bed has originated a call through an audible signal. Repeater panel will be provided in head nurse office/Doctor on call rooms.

Reassurance indicator lights will be provided at call points. In addition direction indicators above doors will be fixed to show from which bed/room the call has been originated from.

It will only be possible to reset the system at the point in which the call has originated.

Nurse call system components for patient bed (Handset) will be within the bed head unit including staff to staff call and reassurance light. A plug-in handset of impact resistant plastic will be provided at bed head position within the bed head unit for the patient's convenience with call button/reassurance lamp, microphone and speaker, staff to staff emergency call, bed light control switch and TV channels selection/ volume control.

Toilet and showers will be provided with pull cord call units and wall mounted reset/emergency staff to staff call unit with reassurance light.

Each system will be equipped with batteries and charger for emergency operation in case of mains cut off. Bed head services will be according to NFPA 99.

20. Intercom System

Local intercom systems for specific departments shall be installed in resuscitation, laboratories, kitchen, operation rooms; etc

Master station shall be capable of originating a call to slave station by depressing appropriate station selector switch which automatically sends call tone to desired station.

Incoming calls from slave station is to be annunciated with flashing LED and audible tone.

Station using talk/listen push button control through built-in microphone and loudspeaker. Voice volume control is to be controlled from master station.

Slave station to be compatible with master station, and equipped with loudspeaker and momentary call push button.

Tone generator in each slave station will annunciate calls from master station.

Station to be desk or wall mounted, with casing of enamelled metal or heavy duty plastic.

21.Access Control System

Access control point (ACP) shall support the operation of access control card reader (or PIN), electric door lock, door and other digital alarm devices, and door exit devices. Each card reader, input point and output point shall be identified with a user-assigned name of up to 12 characters.

Integrated keypad for personal identification number (PIN) entry will be used. Electromagnetic door lock will be controlled by card reader or PIN entry code. Push button shall open the door from inside the operation room.

Access control system will be provided for all operating rooms and hospital main control room.

Certain department entrances doors in the building will be controlled through access control system. The extent of the security system needs to be defined and agreed with the Client according to End User operation and security policies.

22. Closed Circuit Television System (CCTV).

The security system will give coverage for general public areas, elevator lobbies and entrances.

This system will be installed at selected locations to monitor entrances and exits of the buildings.

The CCTV system will be provided with central monitoring via operators with viewing screens, digital video recording facilities and camera controls within the control room.

An integrated and flexible system will have with varying levels of access control, monitoring and CCTV surveillance. Interfaces with fire detection, public address system and building management system (BMS) will be considered to allow information gained by electronic means to be taking care of by staff.

Key areas to be included in the CCTV surveillance scheme are:

Main entrance/Lobby

Atrium

Emergency entrance/Lobby

Elevator lobbies

Waiting areas

Main corridors

Departments entrances

Certain department entrances doors in the building will be controlled through access control system. The extent of the security system needs to be defined and agreed with the Client according to End User operation and security scheme.

Refer to Appendix “O” for simplified CCTV Schematic riser diagram

23. Fire Detection and Alarm System

1. Introduction

A fire alarm system will be designed to provide early detection and notification for the building.

System will comprise automatic and manual detection, and interfaces to related system (fire fighting system, HVAC System, etc).

2. Regulations and Standards

Fire Detection and Alarm System will be in accordance with the local fire protection regulations and in compliance with NFPA 72 standards where not in contradiction with the local regulations.

1. System Description

1. Initiating DevicesAutomatic initiation of alarm condition will be achieved using the following devices: -

Optical smoke detectors in patient rooms, I.C.U, corridors, stores, electromechanical rooms and elevator machine rooms.

Heat Detectors in kitchens.

Signal from water flow switches and Zone valves at each sprinkler zone

Signal from duct mounted smoke detectors provided under the mechanical works.

Manual alarm initiation will be done through call stations of the break glass type to be located at exits and elevator lobbies.

4. Notification of Alarm Condition

This will be achieved through fire alarm evacuation speakers installed in the whole building. Bells and strobe lights shall be used in mechanical areas and where appropriate.

5. Interface with Other Systems

The fire alarm and detection system will be interfaced with the following systems:

Fire fighting system for supervision of water flow switches, zone valves, etc …

HVAC system for operation of smoke control and pressurization fans, etc… and stopping the air handling units.

Elevator system for automatic recall of elevators to the ground floor in alarm conditions. The elevator will then be controlled only by using a special key for fire fighter use.

Shut off Gas valve.

Public Address System.

6. System Components

The system will include the following components:

Main fire alarm control panel (MFACP) of modular & RFACP in the service building, microprocessor-based, analogue, addressable type located in ground floor. It will include the facilities to manually activate or deactivate the alarm.

Event/logging printer connected to the main fire alarm control panel for logging functions and printout of dispatch commands.

Automatic initiation devices and manual call stations will be of the addressable analogue type detectors.

The system will be fully supervised against open circuits, short circuits or main power loss.

The System will have the provision for direct connection to fire brigade via direct telephone line (Auto-dialer).

24.Master Clock System

The system shall display the current time in hours and minutes. The major components of the system are as follows:

Master clock unit and Slave clock units. Digital and analogue types will be furnished according to area served.

Master clock shall be suitable for feeding up to 100 secondary clocks.

Enable automatic transfer of data and time from the global positioning system (GPS).

Facility of Power failure back –up capability to cover 30 hours:

Clocks will be installed in waiting areas, corridors, operating rooms, nurse stations, intensive care units, staff lounges .offices ,control room ,kitchen ,cafeteria,…….etc.

Refer to Appendix “P” for Schematic riser diagram of Master Clock System.

25. Conveying System

The Elevator machine rooms are located above hoist ways and shall be air-conditioned.

The power supply to elevators shall be provided from emergency supply in case of loss of normal power.

Whenever two elevators are provided in one bank, only one elevator shall be operated during mains power failure. Refer to appendix ( ) for summary of hospital elevators

The project will be provided with 9 bed and passenger elevators in addition to 3 service elevators to ease staff, patients and visitors vertical access and transportation.

All elevators will be electric traction and machine room type. The elevators are distributed on four banks with three /two per bank.

Three service elevators shall be in separate bank

Three passengers and bed elevators shall be provided in the main entrance lobby for visitors and use for bed transportation

Elevators will be designed and sized according to BS EN 81 and BS 5655: 1989. Proposed elevators will have modern and quite VVVF control system.

Elevator cars interior finishes will be coordinated with the overall architectural and interior finishes design.

Electromagnetic compatibility will comply with BS EN 12015 and BS EN 50214.

Elevator doors and openings will be 1.5 hours fire rated. A communication system for emergency use only will be provided for each elevator car with the reception desk.

One elevator in each bank will be connected to emergency power in case of mains failure.

Each lift will be equipped with battery for lowering the lift to nearest floor when electrical power is interrupted.

Two or four elevators (according to authority recommendations) will be provided with fire fighting control systems to serve the civil defense requirements.

Speed of all elevators shall be 1 meter /second.

Following is the summary of the elevators performance:

Elevator no. Capacity (KG) StopsTravel

(m.)

Entrance

SIZE

(mm)

Inside Car

(mm)

Hoist

(mm)

Wide Deep Wide Deep

L1,L2&L3

(GROUP-A) In bank

A Main Entrance

750/each Bed

&

passenger

8

(G,1-7)32 1100 1300 2300 6650 3597

L4,L5 (GROUP-B)

In core -1

1000/each

Bed

&

passenger

9

(B,G,1-7)36.5 1200 1500 2500 4942 3100

L6 Simplex

(Back of bank-B)

In core -1

1000 Service9

(B,G,1-7)36.5 900 1600 1500 2000 2381

L7,L8 (GROUP-C)

In core -2

1000/each

Bed

&

9

(B,G,1-7)

36.5 1200 1500 2500 5694 3100

passenger

L9 Simplex

(Back of bank-C)

In core -2

1000 Service9

(B,G,1-7)36.5 900 1600 1500 2000 2381

L10,L11(GROUP-D)

In core -5

1000/each

Bed

&

passenger

5

(B,G,1-3)19.5 1200 1500 2500 6100 3200

L12 Simplex 800 Service5

(B,G,1-3)19.5 800 1400 1350 1800 2000

Notes:

The location of Elevator 12 is still under discussion with the client.

26. Summary of Electrical Works Budget

TitleTotal Price

L.E

Hospital 25,888,146.00

Service building 16,843,158.00

Elevators 6,160,000.00

Total 48,891,304.00

27.Major Electrical Equipment Life Cycle

Equipment Anticipated life

time

( years)

Transformers 30

MV switchgear 30

LV Main distribution boards 30

Low voltage and medium voltage cables 30

Chillers starters and pumps VFD 25

Bus Duct 30

Standby Diesel Generator 25

All lighting, small power, low current and building services 15

Equipments are expected to reach the anticipated life time when manufacturer recommendations are applied and proper maintenance schedules are followed under normal operating conditions.

Appendix "A"Project Electrical load listPOWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

BASEMENT AREAS

KITCHEN 589.0 100 58.9 0.65 38.29 30% 17.7 130.0

WASHING AREA 771.0 50 38.6 0.65 25.06 30% 11.6 250.0

DISH WASH 41.0 50 2.1 0.65 1.33 30% 0.6 15.0

MEDICAL MAINTENANCE 118.0 110 13.0 0.78 10.12 60% 7.8 5.0

MAIN STERILIZE 549.0 70 38.4 0.78 29.98 60% 23.1 340.0

CAFETERIA 394.0 50 19.7 0.65 12.81 30% 5.9 35.0

PANTRY 27.0 100 2.7 0.78 2.11 60% 1.6 5.0

COLD ROOM 17.0 70 1.2 0.78 0.93 60% 0.7 5.0

I.V PREPARATION, AIR LOCK 30.0 100 3.0 0.78 2.34 60% 1.8 11.9

MORGUE ROOM 107.0 70 7.5 0.78 5.84 30% 2.2 28.1

GAS STATION 133.0 50 6.7 0.70 4.66 30% 2.0

PHARMACY 50.0 100 5.0 0.78 3.90 60% 3.0 10.2

DOSING 98.0 100 9.8 0.78 7.64 60% 5.9

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

NACO 16.0 70 1.1 0.78 0.87 60% 0.7

ADD. 48.0 70 3.4 0.78 2.62 60% 2.0

Store,Archive,service,changing room, prayer

1941.0 30 58.2 0.78 45.42 25% 14.6

control, IT, mech., Elec. Rooms, free space

714.0 95 67.8 0.80 54.26 65% 44.1

BATH ROOM 264.0 95 25.1 0.72 18.06 10% 2.5

CORRIDORS 934.0 25 23.4 0.82 19.15 30% 7.0

STAIRS 134.0 15 2.0 1.00 2.01 100% 2.0

SUB-TOTAL 6975.0 387.4 287.4 156.7

GROUND FLOOR AREAS

GAMMA CAMERA 41.5 70 2.9 0.70 2.03 50% 1.5 136.0

FILM 8.0 50 0.4 0.70 0.28 30% 0.1 1.7

HOT LAB. 7.2 100 0.7 0.70 0.50 35% 0.3 30.6

C.T. 45.0 70 3.2 0.70 2.21 50% 1.6 119.0

ULTRA SOUND 1&2 28.5 70 2.0 0.70 1.40 50% 1.0 20.0

PASSIVE TREATMENT 51.1 130 6.6 0.78 5.18 60% 4.0 78.2

X-RAY 1&2 81.8 70 5.7 0.70 4.01 50% 2.9 170.0

CLINIC (14 BED) 543.4 110 59.8 0.78 46.62 60% 35.9 11.1

GYM 76.0 70 5.3 0.70 3.72 30% 1.6

OR / TRAUMA 36.6 160 5.9 1.00 5.86 100% 5.9

AIRBORNE INFECTION 22.7 50 1.1 0.65 0.74 30% 0.3

TRAUMA / PLASTER ROOM 27.5 100 2.8 0.70 1.93 50% 1.4 21.3

RESUSCITATION 101.0 100 10.1 1.00 10.10 100% 10.1 11.9

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

HYDRO THERAPY 48.0 100 4.8 0.70 3.36 50% 2.4 59.5

O.C.C. 40.0 100 4.0 0.65 2.60 50% 2.0

TRIAGE 54.5 70 3.8 0.70 2.67 30% 1.1

OFFICES 94.0 125 11.8 0.78 9.17 40% 4.7

RECEPTION 1487.5 50 74.4 0.65 48.34 50% 37.2

CONTROL ROOM+I.T 50.1 95 4.8 0.80 3.81 65% 3.1

DOCTOR ROOM 220.3 122 26.9 0.78 20.96 45% 12.1

WAITING AREA 274.0 25 6.9 0.83 5.69 35% 2.4

BATH, W.C 255.5 95 24.3 0.72 17.48 10% 2.4

Elec. Room+A.H.U. 49.7 95 4.7 0.80 3.78 65% 3.1

Archive+Store+ House Keeping+Equipment Room+Service Room+Changing Room+Dirty Utility+Clean Utility+Linen Room+Trolly park

438.7 30 13.2 0.78 10.27 25% 3.3 9.4

CORRIDORS 2830.0 25 70.8 0.82 58.02 30% 21.2

STAIRS 185.0 15 2.8 1.00 2.78 100% 2.8

SUB-TOTAL 7097.6 359.4 273.5 164.2

FIRST FLOOR AREAS

Hematology Lab+Microbiology Lab+Chemical Lab+DUTY LAB

417.3 100 41.7 0.78 32.55 60% 25.0 110.0

STERILIZATION 15.6 70 1.1 0.70 0.76 30% 0.3 15.0

BLOOD BANK 60.0 50 3.0 0.90 2.70 30% 0.9 35.7

COLD ROOM 9.6 50 0.5 0.90 0.43 30% 0.1 5.0

I.C.U 672.0 130 87.4 0.78 68.14 60% 52.4

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

PLAY AREA 94.0 70 6.6 0.70 4.61 30% 2.0

MULTI PURPOSE ROOM 170.0 30 5.1 0.65 3.32 50% 2.6

WATER PURIFICATION + WATER STATION

41.3 30 1.2 0.78 0.97 25% 0.3 2.6

Counter+Nurse Station+Office Entrance+Administration

866.0 125 108.3 0.78 84.44 40% 43.3

INTERVIEW ROOM + GLASS WASH

50.0 70 3.5 0.65 2.28 30% 1.1

DOCTOR ROOM 98.9 122 12.1 0.78 9.41 45% 5.4

WAITING AREA + ELEVATOR LOBBY

375.0 23 8.6 0.83 7.16 35% 3.0

BATH, W.C 168.0 95 16.0 0.72 11.49 10% 1.6

ELEC. ROOM +I.T. ROOM 80.0 95 7.6 0.80 6.08 65% 4.9

STORES,Dirty Utility,Clean Utility,House Keeping,Linen,Service Room,Patient Change,TERRACE

495.0 30 14.9 0.78 11.58 25% 3.7

FREE SPACE 390.0 70 27.3 0.70 19.11 30% 8.2

CORRIDORS 2304.0 25 57.6 0.82 47.23 30% 17.3

STAIRS + ELEVATOR SHAFT 185.0 15 2.8 1.00 2.78 100% 2.8

SUB-TOTAL 6491.7 405.1 315.0 175.0

SECOND FLOOR AREAS

OPERATING ROOM 354.0 160 56.6 1.00 56.64 100% 56.6

CARDIAC CATHETER OPERATION

111.0 160 17.8 1.00 17.76 100% 17.8

I.C.U + P.I.C.U 672.0 130 87.4 0.78 68.14 60% 52.4

DOCTOR ROOM + HEAD NURSE 236.0 122 28.8 0.78 22.46 45% 13.0

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

PATIENT ROOM 575.0 130 74.8 0.75 56.06 40% 29.9

TREATMENT WARD 575.0 130 74.8 0.75 56.06 50% 37.4

PUMP & PREPARATION ROOM 68.0 30 2.0 1.00 2.04 100% 2.0

AMESTHESIA + FLASH STORE 25.0 30 0.8 0.78 0.59 25% 0.2

INTERVIEW ROOM 50.0 70 3.5 0.65 2.28 30% 1.1

STUFF LOUNGE 148.0 70 10.4 0.65 6.73 30% 3.1

WAITING AREA + ELEVATOR LOBBY

375.0 23 8.6 0.83 7.16 35% 3.0

NURSE STATION + REGISTRATION

190.0 125 23.8 0.78 18.53 40% 9.5

NURCE TRAINING HALL 170.0 100 17.0 0.75 12.75 50% 8.5

BATH, W.C 168.0 95 16.0 0.72 11.49 10% 1.6

I.T + Elec. Room + UPS + CONTROL

80.0 95 7.6 0.80 6.08 65% 4.9

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room,Patient Change, waste

495.0 30 14.9 0.78 11.58 25% 3.7

CORRIDORS 2101.0 25 52.5 0.82 43.07 30% 15.8

STAIRS + ELEVATOR SHAFT 185.0 15 2.8 1.00 2.78 100% 2.8

SUB-TOTAL 6578.0 499.8 402.2 263.2

THIRD FLOOR AREAS

OPERATING ROOM 275.0 160 44.0 1.00 44.00 100% 44.0

RECOVERY ROOM 81.0 130 10.5 0.90 9.48 70% 7.4

I.C.U 672.0 130 87.4 0.78 68.14 60% 52.4

DOCTOR ROOM + HEAD NURSE 236.0 122 28.8 0.78 22.46 45% 13.0

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

PATIENT ROOM 1150.0 130 149.5 0.75 112.13 40% 59.8

PUMP & PREPARATION ROOM 68.0 30 2.0 1.00 2.04 100% 2.0

AMESTHESIA + FLASH STORE 25.0 30 0.8 0.78 0.59 25% 0.2

INTERVIEW ROOM 50.0 70 3.5 0.65 2.28 30% 1.1

STUFF LOUNGE 148.0 70 10.4 0.65 6.73 30% 3.1

WAITING AREA + ELEVATOR LOBBY

375.0 23 8.6 0.83 7.16 35% 3.0

NURSE STATION + REGISTRATION

190.0 125 23.8 0.78 18.53 40% 9.5

ADMINISTRATION 170.0 100 17.0 0.75 12.75 50% 8.5

BATH, W.C 168.0 95 16.0 0.72 11.49 10% 1.6

I.T + Elec. Room + UPS 80.0 95 7.6 0.80 6.08 65% 4.9

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room,Patient Change, waste

495.0 30 14.9 0.78 11.58 25% 3.7

CORRIDORS 2101.0 25 52.5 0.82 43.07 30% 15.8

STAIRS + ELEVATOR SHAFT 185.0 15 2.8 1.00 2.78 100% 2.8

SUB-TOTAL 6469.0 479.9 381.3 232.7

FORTH FLOOR AREAS

DOCTOR ROOM+HEAD NURSE 93.6 122 11.4 0.78 8.91 45% 5.1

PATIENT ROOM 1150.0 130 149.5 0.75 112.13 40% 59.8

WAITING AREA + ELEVATOR LOBBY

254.0 23 5.8 0.83 4.85 35% 2.0

NURSE STATION + REGISTRATION

78.6 125 9.8 0.78 7.66 40% 3.9

BATH, W.C 56.2 95 5.3 0.72 3.84 10% 0.5

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

I.T , ELECT. ROOMS 47.6 95 4.5 0.80 3.62 65% 2.9

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room

210.0 30 6.3 0.78 4.91 25% 1.6

CORRIDORS 594.0 22 13.1 0.82 10.72 25% 3.3

STAIRS + COURT + ELEVATOR SHAFT

257.0 7 1.8 1.00 1.80 90% 1.6

MECHANICAL AREA 1263.0 30 113.7 0.80 90.94 35% 39.8

SUB-TOTAL 4004.0 321.3 249.4 120.6

FIFTH FLOOR AREAS

DOCTOR ROOM+HEAD NURSE+STAFF REST

117.6 122 14.3 0.78 11.19 45% 6.5

PATIENT ROOM 1250.0 130 162.5 0.75 121.88 40% 65.0

WAITING AREA + ELEVATOR LOBBY

254.0 23 5.8 0.83 4.85 35% 2.0

NURSE STATION + REGISTRATION

78.6 125 9.8 0.78 7.66 40% 3.9

BATH, W.C 56.2 95 5.3 0.72 3.84 10% 0.5

I.T , ELECT. ROOMS 23.6 95 2.2 0.80 1.79 65% 1.5

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room

190.8 30 5.7 0.78 4.46 25% 1.4

CORRIDORS 594.0 22 13.1 0.82 10.72 25% 3.3

STAIRS + COURT + ELEVATOR SHAFT

257.0 7 1.8 1.00 1.80 90% 1.6

SUB-TOTAL 2821.8 220.7 168.2 85.7

SIXTH FLOOR AREAS

DOCTOR ROOM+HEAD NURSE+STAFF REST

117.6 122 14.3 0.78 11.19 45% 6.5

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

PATIENT ROOM 1250.0 130 162.5 0.75 121.88 40% 65.0

WAITING AREA + ELEVATOR LOBBY

254.0 23 5.8 0.83 4.85 35% 2.0

NURSE STATION + REGISTRATION

78.6 125 9.8 0.78 7.66 40% 3.9

BATH, W.C 56.2 95 5.3 0.72 3.84 10% 0.5

I.T , ELECT. ROOMS 23.6 95 2.2 0.80 1.79 65% 1.5

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room

190.8 30 5.7 0.78 4.46 25% 1.4

CORRIDORS 594.0 22 13.1 0.82 10.72 25% 3.3

STAIRS + COURT + ELEVATOR SHAFT

257.0 7 1.8 1.00 1.80 90% 1.6

SUB-TOTAL 2821.8 220.7 168.2 85.7

SEVENTH FLOOR AREAS

DOCTOR ROOM+HEAD NURSE+STAFF REST

117.6 122 14.3 0.78 11.19 45% 6.5

PATIENT ROOM 1250.0 130 162.5 0.75 121.88 40% 65.0

WAITING AREA + ELEVATOR LOBBY

254.0 23 5.8 0.83 4.85 35% 2.0

NURSE STATION + REGISTRATION

78.6 125 9.8 0.78 7.66 40% 3.9

BATH, W.C 56.2 95 5.3 0.72 3.84 10% 0.5

I.T , ELECT. ROOMS 23.6 95 2.2 0.80 1.79 65% 1.5

STORES, Dirty Utility, Clean Utility,House Keeping,Linen,Service Room

190.8 30 5.7 0.78 4.46 25% 1.4

CORRIDORS 594.0 22 13.1 0.82 10.72 25% 3.3

STAIRS + COURT + ELEVATOR 257.0 7 1.8 1.00 1.80 90% 1.6

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

SHAFT

SUB-TOTAL 2821.8 220.7 168.2 85.7

ROOF

ROOF DECK 2514.0 10 25.1 0.65 16.34 10% 2.5

SERVICE ROOM + MECH ROOM. 102.0 25 7.7 0.65 4.97 20% 1.5

CORRIDORS 185.0 25 13.9 0.65 9.02 50% 6.9

STAIRS 110.0 15 5.0 1.00 4.95 100% 5.0

SUB-TOTAL 2911.0 51.6 35.3 15.9

SERVICES BUILDING - GROUND FLOOR

TRANSFORMERS, GEN., MVSG ROOMS

267.0 15 4.0 0.65 2.60 30% 1.2

LV MOTOR CONTROL CENTERS ROOM

144.0 30 13.0 0.70 9.07 30% 3.9

CHILLERS HALL 602.0 30 54.2 0.70 37.93 30% 16.3

BOILERS ROOM + STORES 387.0 25 29.0 0.65 18.87 30% 8.7

CORRIDORS 96.0 25 7.2 0.65 4.68 30% 2.2

STAIRS 30.0 15 1.4 1.00 1.35 100% 1.4

SUB-TOTAL 1526.0 108.7 74.5 33.6

SERVICES BUILDING - FIRST FLOOR

OFFICES 375.0 100 37.5 0.65 24.38 30% 11.3

LIVING ROOMS 145.0 50 21.8 0.65 14.14 30% 6.5

STORES 23.0 25 1.7 0.65 1.12 30% 0.5

TOILETS 104.0 25 7.8 0.65 5.07 30% 2.3

POWER LOAD CALCULATION SHEET

FLOOR AREA(sqm) L&P (VA\m2)

L&P LOAD(KVA)

DEMAND FACTOR

L&P

DEMAND LOAD(KVA)

Emergency load %

Emergency load(KVA)

Special Equipment (KW)

CORRIDORS 138.0 25 10.4 0.65 6.73 30% 3.1

STAIRS 30.0 15 1.4 1.00 1.35 100% 1.4

SUB-TOTAL 815.0 80.5 52.8 25.1

MECHANICAL LOAD

Water Cooled Centrifugal Chillers

3 working x 620Kw each 1860.0

Primary Chilled water Pumps

(2 working+1 standby ) x 45Kw each 135.0

Secondary Chilled water Pumps

(2 working+1 standby ) x 75Kw each 225.0

Condenser water Pumps (2 working+1 standby ) x 65Kw each 195.0

Cooling Towers (2 working+1 standby ) x 40Kw each 120.0

Total AHU 424.0

Total FCU 60.0

MECHANICAL LOADS +SMALL PUMPS 172.0

TOTAL MECHANICAL LOAD

ELEVATORS

EXTERIOR LIGHT

TOTAL ELECTRIC LOAD

DEMAND LOAD WITH 10% SPARE=8970 KVA, APPLY AN OVERALL DIVERSITY FACTOR OF .8 ,

MAX DEMAND LOAD =7176 KVA-NUMBER OF TRANSFORMERS REQUIRED =6x1600KVA

AND GENERATOR CAPACITY IS =2x1500KVA

Appendix "B"

Power Distribution Scheme

Appendix "C"

Principal of Grounding System

Connections in Group 1 Locations

Appendix "D"

Principal of Grounding System

Connections in Group 2 Locations

Appendix "E"

Proposed Patient Room Lighting Layout

Appendix "F"

Proposed Patient Room Power Layout

Appendix "G"

Proposed Patient Room Low Current Layout

Appendix "H"

Patient Room Circuit Breakers Box Details

Appendix "I"

Proposed Operating Room Lighting Layout

Appendix "J"

Proposed Operating Room Power Layout

Appendix "K"

Proposed Operating Room Low Current Layout

Appendix "L"

Schematic Riser Diagram of Central Battery System

Appendix "M"

Schematic Riser Diagram of Telephone and Data System

Appendix "N"

Schematic Riser Diagram of Public Address System

Appendix "O"

Schematic Riser Diagram of CCTV System

Appendix "P"

Schematic Riser Diagram of Master Clock System

Integrated AUTOMATION WORKS

Building Management System

1. Codes and Regulations

The following codes and standards shall be applicable:

1. ASHRAE codes:

ASHRAE -114 (Energy Management Control Systems Instrumentation, 1986), and ASHRAE -135 (Communication Protocol for Building Automation and Control Networks, 1995).

2. NEMA Standard:

NEMA DC-3 (Wall-Mounted Room Thermostats, 1989 - R 1996), NEMA ICS 1 (General Standards for Industrial Control and Systems, 2000), NEMA ICS 2 (Industrial Control and Systems: Controllers, Contactors, and Overload Relays Rated 600 V, 2000), and NEMA DC-12 (Hot Water Immersion Controls, 1985 - R 1991 - R 1997).

3. All other codes and standards as applicable, such as:

BS for: electrical installations requirements, pipe threads specification, etc.

EN for: Measuring accuracy, valves specifications, etc.

IEE for: Wiring Regulations.

NEC for: Electric Metallic Tubes.

2. Design Concept

2.1 System Configuration

A modern integrated Building Management System (BMS) solution will be provided for automatic control, global monitoring and energy conservation by optimizing all the available mechanical, electrical and medical systems.

The BMS core is the field controllers which is connected to the all other field devices and equipments. These controllers are microprocessor based type Direct Digital Control (DDC) shall be responsible of energy management, equipment

monitoring and control. DDC's shall be connected all together through a standard very high quality communication network and up to the Operator Interface Workstation -located on the basement control room.

The system major components are including, but not limited to, the following:

1. Operator Interface Workstations (two Personal computers).

2. Data storage unit (Database server).

3. Alarm and report printers.

4. Data communication network and units.

5. Stand-alone Direct Digital Controllers (DDC).

6. Stand-alone Room Control Units (RCU).

7. Network master controllers and zone managers (as applicable).

8. Control panels enclosures, including all accessories.

9. Hand Held Operator Terminals (HHOT).

10. Field instruments.

11. Data/Software Interface units.

12. System Software Utilities.

13. Control Console.

The following figure represents the Building Management System structure that includes the system different main component, communication network and field connections:

Building Management System structure

2. System Features

The following some of the basic system features:

1. Open system configuration and component.

2. Standard equipment that has an international recognition for quality.

3. User-friendly graphical representation for all events and alarms.

4. Generate reports, work-orders, and maintenance routines.

5. Hardware and software 20% spare capacities.

6. Open expandability/upgrading capability.

7. Secured system access, performance and data sharing/transfer.

8. Optimize energy utilization.

9. Events, alarms and information classification and storage.

2. System Capability

The system performance/capability shall be including but not limited to:

1. Standalone capability in the event of network failure.

2. Local and remote access.

3. Communicating with third party vendor equipment for all mechanical and electrical aspects.

4. Global monitoring for all MEP systems and equipments indications, alarms and measurements

5. Selectively turning on or off all mechanical HVAC equipment and lighting.

6. Resetting temperatures for occupied or unoccupied conditions allowing automatic ramming of temperature set point.

7. Ventilation air control through indoor air quality sensors.

8. Global monitoring for the available medical gases and medical equipments.

9. Analyzing building energy performance and load profiles.

10. Allowing dynamic analysis to verify efficient equipment operation.

11. Recording of all systems alarms, events, operator commands, and power / thermal energy consumption of different zones and spaces, as well as the complete building domestic water, chilled water and electricity feeders.

2. System Benefits

1. Maximize owner overall profit.

2. Facilitates operation and maintenance tasks

3. Guarantees comfort for end users

4. Special applications operation and coordination

2. Control and Monitoring Interfaces with MEP Systems

The following table summarizes the BMS interfaces with MEP systems and equipment, which will be adapted in the design.

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

HVAC

(Control

And

Monitoring)

Chilled/Condenser

Water System

Chillers

Primary Pumps

Secondary Pumps

Condenser Pumps

Cooling Towers

Expansion Tanks

Make-up Water System

Blow Down / Bleed System

Air Separators

Chemical Treatment

Main Supply & Return Headers

Air

Handling

Units

Arrangement

1

Supply Fan

Variable Speed Drives

Supply Air Measurements

Return Fan

Return Air Measurements

Filters

Reheat Coil

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

Cooling Coil

Temperature/Pressure

Arrangement

2

Supply Fan

Supply Air Measurements

Return Fan

Return Air Measurements

Filters

Cooling Coil

Temperature/Pressure

Arrangement

3

Supply Fan

Supply Air Measurements

Return Fan

Return Air Measurements

Filters

Cooling Coil

Heating Coil

Run Around Coil

Arrangement Supply Fan

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

4

Supply Air Measurements

Return Fan

Return Air Measurements

Filters

Cooling Coil

Plate Heat Exchanger Filter

Fire/Smoke Damper

FCU 4-Pipe Cooling & Heating

Fans

Exhaust Fans

Supply Fans

Smoke Exhaust Fans

Staircase pressurization Fans

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

Plumping and

Fire Fighting

(Monitoring)

Tanks Domestic/ Fire Fighting Water

Pumps Fire Fighting

Jockey

Domestic Water Booster

Submersible

Irrigation

Hot water

Steam Boilers

Water Heaters

Valves

Main Supply & Return Headers

Circulation Pumps

Measure Station

Miscellaneous

Sewage Pits

Chemical Treatment Station

Sand Filters

Water Softeners

Flow Meters

Ultraviolet Filters

Fuel Feed System

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

Medical System Hospital Management System

Medical Gases System

Medical Equipments

Vacuum system

Compressed Air System

SYSTEM DESCRIPTION CONTROL MONITORSOFTWARE

INTERFACE

Electrical

Services

(Control and

Monitoring)

Power

Services

Low Voltage Switchboard

Emergence Switchboard

Transformer

Generator

ATS

Energy Meters

Lighting Control

Other

Systems

Fire Alarm

Sound (public address) System

Telephone System

CCTV

Elevators

TV System

Nurse Call

Master Clock System

Intercom

Central Battery

UPS