basic design review comments i and c chpi

1

D. M. CONSUNJI, INC.PROJECT 15 MW SEMIRARA CFB POWER PLANT PROJECTSUBJECTBASIC DESIGN DOCUMENT LIST AND REVIEW COMMENTSDATE ###

ITEM DOCUMENT TITLE DMCI COMMENTS DMCI EXPLANATION RESPONSE OF CNEEC CUC RESPONSE DMCI RESPONSE DMCI COMMENT REV.B DMCI/CUC/CNEEC/CHPI RESPONSE COMMENT TYPE REMARKS

BASIC DESIGN DOCUMENTSBATCH 1

8 I & C

73 I&C Design Description DMCI Accept, and revised. Accepted Standard used were reflected to Revision B. Closed

DMCI Accept. Description will be modified, the three systems' description will be added. (Must be reflect in F253C-K03) Closed

DMCI .Should be reflect in drawing F253C-K3 - CCTV Annunciator Alarms and signals should be provided aside from drum level alarm indication. Closed

Annunciator Alarms and signals should be provided aside from drum level alarm indication. Closed

DMCI CNNEC/CHPI will modify the description and for revision Closed

DMCI Accepted Closed

Closed

DMCI Accept. The CPU and module of FSSS & ETS is triplicate redundancy. Accepted

I&C Design Description DMCI According to MTD, steam turbine's DEH will adopt WOODWARD505 brand of American. Accepted DMCI confirms/Accepts, FSSS was asured to comply with necessary Protection as Per CNEEC/CHPI

DMCI accepted, the description will be modified Accepted No revised description made. How the system works works? CHPI will provide TBC description and the function during (start-up, turbine trip, etc.) Closed

DMCI Instruments should have at least with 10% spare quantity to anticipate damages during commisioning period. This opinion is out of basic design scope, which will be decided during equipment purchasing. Accepted CNEEC will decide according to the required no. of instruments spare. Pending


DMCI refer to DOR p 13 [15.5 (15.5.5)] Closed

DMCI For clarification: Does TC are included in section 11.2 p.10? Accepted Closed

DMCI UPS Power source should be at auxiliary source and with at emergency source incase of auxiliary failure. Accepted As per Description UPS will adapt back-up power source. Closed

DMCI After calculation, it meets the requirement. Accepted

DMCI Cable tray should comply with the standard requirement in accordance to NEMA standard or equivalent. Accepted DMCI accepts/comfirms. Closed

DMCI Accepted Grounding System Philosophy (Separation of IE and PE) IEEE 1050-2004 Clause 5.2 Closed

CUC Accepted Closed

CUC The description of 12.1.2 and 4.4.1 are Inconsistent, it should be unified. There is no item 4.4.1 in design description, please clarify further. The description of 12.1.3 is different from 7.5 of F253C-D01, it should be unified. The description was already changed, see the revision B of I&C Description. Closed

SMC CNEEC/CHPI revised the description. See Rev. B. Closed

SMC Accepted CNEEC/CHPI revised the description. See Rev. B. Closed

SMC: Closed

SMC: Closed

SMC: Closed

SMC: CNEEC/CHPI replies that the parameters will be provided and to be checked to the Turbine manufacturer. Closed

74 CUC: The LCD of drum water level CCTV are not shown in the drawing. Accept, and revised drawing F253C-K05. Accepted CNEEC/CHPI will revise the drawing. Closed

75 Configuration Diagram of Control System CUC: Recommended that two local operator stations be required at the coal handling control system. Accepted, and revised drawing. Accepted Accepted CNEEC/CHPI revised the drawing and was included in Rev.B. Closed

DMCI Closed

DMCI BOILER Control Cabinet not included. Closed

CUC: pls show the system in drawing CNNEC/CHPI will revise the drawing, and show this system in drawing F253C-K03. Closed

SMC: Closed

76 Boiler Combustion System P&I Diagram DMCI Accepted Closed

DMCI CNEEC/CHPI will revise the drawing. Closed

76 Boiler Combustion System P&I Diagram DMCI Note#2: Thermocouple: Indicate And Enumerate The Quantity/Number Of Every Primary Element Or Te. Accepted Closed

DMCI Accept, and revised. Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

DMCI The inlet valve of ESP is normal open. It can be operated only when failure happens. It is manually operated. Accepted

DMCI It is in the legend , Please refer to F253C-A03. AT is Analyzer transmitter. Here is O2 Analyzer transmitter. Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

DMCI Accepted CNEEC/CHPI Will change ZT to ST, and revise the drawing. Closed

DMCI Here the three ash discharge exits for emergency, which will be specified in the drawings. Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

DMCI NOTE #9; Need To Designate The Drawing No. Accepted, and revised drawing. Accepted CNEEC/CHPI revised the drawing, see Rev. B.

DMCI NOTE #10 : Need A Detailed Information Of This Valve And How It Works ...Manual Operated Or Actuated? During commissioning, they will be set in a best position and will not be operated. Accepted Closed

DMCI The damper of fans' outlet is normal open. It can be operated only when failure happens. Accepted Closed

DMCI This valve position's feedback signal is 4~20mA. Accepted CNEEC/CHPI replies that the ZT refers to MOV feedback (4-20mA), please see the I&C Legends

CUC: Suggested the temperature instrument of TE0107 change to pressure instrument PT0117. Revert air temperature is high and TE0107 is used to calculate the temperature compensation of revert air. Closed

SMC: Clarify the equipment “Loop Seen Fan” Closed

77 Boiler Steam & Water system P&I Diagram DMCI The electric valve MV0201's open & close speed can meet the requirement of boiler's operation

No SPIN for Final Superheater Header Outlet MOV CHPI will revise the Drawing Closed

Boiler Drum Phosphate Dosing Tapping origin flag not found in F253C-H08[01 Closed

DMCI Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

DMCI Accepted, and revised. Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed



DMCI It is LITS Accepted CNEEC/CHPI replies that it refers to LITS Closed


CUC: Suggested to main steam flow measuring position is located before temperature and pressure sensor. Accepted, and revised. Accepted CUC accepts the reply of CNEEC/CHPI Closed

CUC: Accepted, and revised. Accepted CUC accepts the reply of CNEEC/CHPI Closed

SMC: Closed

78Boiler Fuel Oil system P&I Diagram DMCI Accepted, and revised. Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

Add Flow Totalizer Transmitter in Fuel Oil Unloading Pipe. CHPI replies that not necessary to put FIQ to the unloading pipe Closed

Closed

Check the orientations of Flag directions CHPI replies that Flags refers to pipe ID not Pipe ID and Flow direction. Add process flow direction ( arrow) Closed






1Boiler Fuel Oil system P&I Diagram DMCI Yes, CNEEC confirm. There is power failure alarm signal. See drawing F253C-K06(Rev.B). Accepted CNEEC/CHPI confirm. There is power failure alarm signal. See drawing F253C-K06(Rev.B). Closed

CUC: There is a temperature measuring point on oil tank top. Accepted CNEEC/CHPI confirms that there is a temperature measuring point on oil tank top. Closed

CUC: Suggested to PT0301 is located before PCV0301. Accepted, and revised. Accepted Accepted CNEEC/CHPI revised the drawing, see Rev. B. Closed

CUC: Please explain the purpose of SV0302 . When malfunction happens, the fuel oil can be cut at once. The code requires this valve. Accepted Closed

SMC: For FT0302 - Incomplete configuration. Indicate the missing valve.(see drawing) Closed

SMC: For FT0301 - Incomplete configuration. Indicate the missing valve.(see drawing) Closed

SMC: Closed

SMC: Indicate drawing numbers for all connections coming from or going to other system. Closed

79 Limestone System P&I Diagram DMCI Accepted Closed

CHPI will revise the drawing. Closed


DMCI There is no DI feedback signal. Pneumatic is operated via solenoid but solenoid has no feedback signal. Accepted Closed




SMC Closed

SMC Indicate drawing numbers for all connections coming from or going to other system. Closed

SMC CNEEC/CHPI comfirm limestone feeding going to the “J” valve. Closed

SMC The air receiver tank should indicate if its service air or instrument air. Closed

SMC Flow transmitter should be installed for monitoring of limestone quantity injected. CNEEC/CHPI will provide limestone weight conuting function in DCS. Closed

SMC Closed

80 DMCI Accepted, and revised. Accepted CNEEC/CHPI revised the drawing. See Rev. B. Closed

No Auxiliary Steam header for Sootblower. Closed

Add Isolating Valve (MOV) at Cooler Ejectors, Gland Steam Cooler, LP Heater CNEEC/CHPI will revise the drawing and manual valve will be provided Closed

Instruments with ASTERISK (*) means what? "*" means to be provided by main equipment manufacturer. Closed

DMCI . Accepted Closed

DMCI This valve is solenoid valve, which has no feedback signal. Accepted Closed

DMCI Accepted, and revised. Accepted CNEEC/CHPI revised the drawing. See Rev. B. Closed

DMCI Accepted, and revised. Accepted CNEEC/CHPI revised the drawing. See Rev. B. Closed

DMCI ***Bypass valve should fast acting. Accepted The fast acting BP valve should be secure and consider the reponse time of the valve during the operation. PENDING

CUC: Suggested that the FT0401/FE0401 should be located behind the LP Heater. Accepted, and revised. Accepted CNEEC/CHPI revised the drawing. See Rev. B. Closed

SMC Closed


smc RESPONSE

STANDARD: Should include relevant standard applicable to I&C in accordance to various national and international standard as the basis for derivation of selection criteria and implementation.

Not mentioned Systems in I&C Description Document:Sootblower SystemSewage Water TreatmentChlorinating Plant

p. 5. [2.2.7] From REV A. Common Control System will be controlled and monitored by DCS. Please clarify the "cluase"- adopt local control mode.

CNEEC/CHPI explained that the 2.2.7 refers to local control (conventional Push button wil bel used) since the system is manageable and small number of I/O no need by PLC and does not refer to Common System.

CCR should include the following:-Annunciator for critical alarms-Emergency Trip Pushbuttons-GPS-Drum Level Monitoring CCTV-Large LCD monitor- Verify configuration/equipment based on basic design statements and compare with MTD requirements. Drum level CCTV refer to dwg. No. F253C-K05 at drum level diagram.

This project includes:. Annunciator for critical alarms. Emergency Trip Pushbuttons. GPS. Drum Level Monitoring CCTVAbove information will be submit detailed drawing in detailed design stage.This project doesn't includes: Large LCD monitor (not including in MTD)

CNEEC/CHPI will provide a panel mounted Annunciator for process alarms, and the signals will be provided during detail design.

CNEEC/CHPI will provide a panel mounted Annunciator for process alarms, and the signals will be provided during detail design.

Specify and quantify all the equipments intendedfor DCS and other relevant facilities such as:-Number of Operator Work Station-Number of printers-Large LCD for process monitoring-Drum level monitoring indicator and CCTV

This project doesn't includes: Large LCD monitor (not including in MTD)Regarding Number of Operator Work Station，Number of printers，refer to F253C-K03.Drum level monitoring indicator's quantity is 2 sets and CCTV's quantity is 1 set.

*REJECTED NOTE:Please Indicate the Number of Operator Work Station Number of printers etc. in I&C design description.

With new comment (see p. 6[3.2]. F253C-K01 should conform to F253C-K03 and the number of Operator stations, EWS, Printer and other equipment should be stated.

Should state the contro systeml of the following;-Sootblower System ( MTD p.13 [4.2.2])-Sewage Water Treatment ( MTD p.19 [4.6.3])-Chlorinating Plant ( MTD p.19 [4.6.2])

Accept. Description will be modified, the three systems' description will be added. The relevant P&I drawing will be submit in the detailed design stage.

The descriptions are incorporated in Rev. B. Chlorinator System, Sootblower system will be in PLC Control System, while Sewage Treatmennt System wiil adapt the conventional control since the I/O are very minimal.

REVISED with new comment see p 6[4] : Include in this specification the following:

ELECTRICAL CONTROL SYSTEMCOMMON CONTROL SYSTEMSEWAGE TREATMENT SYSTEMBOILER CONTROL SYSTEMTURBINE CONTROL SYSTEMThe Boiler Control system and the Turbine Control System must be provided by OEM.

Description of Electrical Control System, Common control System, Boiler and Turine Control System will be included to Section 6.

Boiler Control System will be in DCS and Turbine Control System will be provided by Original Equipment Manufacturer migrated to DCS.

FSSS- BMS is part of FSSS including FSS Fuel Safety System must complywith NFPA8502. FSS include Emergency Trip (Master Fuel Trip MFT/Oil Fuel Trip OFT), oil fuel system leakage test.

DMCI confirms/Accepts, FSSS was asured to comply with necessary Protection as Per CNEEC/CHPI. And it was included in Rev. B.

Additional features and function of DEH must be:-self diagnotic on every module-risk reduction design-speed control-load control-overspeed protection trip

No features included in bypass system. TBC not mentioned in I and C Description Document. TBC- Turbine Bypass Control System; for HP Bypass System to guarantee the safe operation set

Temperature transmitter should recommended for a long distance., TC tapping to avoid ambienterrors and reduce the use of compensating cables. Or the use fo marshalling cabinet for TC with prescribe terminal blocks.

Temperature transmitter is not included in this project. The control cabinet is not far from the local instrument so the TC will directly connect to DCS.

DMCI accepts/comfirms the no TT will be used, TC I/O card and RTD I/O card will be provide by DCS and directly connected to DCS

Should provide Marshalling cabinet to all signal instruments to avoid congestion of wiring coming-in to DCS Cabinet with proper wire management and seggregation of signal (Analog to digital signals)

There in no marshalling cabinet in this project. The signal cable and control cable will be directly connected to DCS.

* REJECTED NOTE: Need Marshalling cab. to avoid congestion of wiring coming-in to DCS Cabinet.

CNEEC/CHPI reply no need for the marshalling cabinet since there is minimal I/Os in the project. DMCI agreed.

Item 11.2 is the description of pressure gauge, which has nothing to do with TC. Regarding TC, please refer to item 11.1 in the document F253C-K01.

DMCI refers to TC compensating cable which is found in DOR. CNEEC will provide the TC compensating cables.

给UPS供电的电源有两路，来自厂用电（F253C-D04）.UPS负荷：DCS、ETS、DEH、锅炉就地点火、电气继电保护屏及重要仪表等，容量约为30KVA（1.5小时）。详细资料将尽快提供。There are two power resources for UPS, which are from auxiliary power(F253C-D04). UPS load: DCS, ETS, DEH, boiler's local ignition, electrical relay protection screen, important instruments, etc. The capacity is about 30kVA(1.5 hours). Please provide the detail information as soon as possible.

The capacity of the air receiver should able to support the required air supply for all on-line devices when the compressor unit is in stnadby mode more than five (5) minutes.

Cable tray comply with GB standard.The material is hot dip galvanized steel.The cable tray for power cable is ladder type, the cable tray for control cable and instrumentation cable is channel type.

- List of critical and regulatory I/Os should be identified.-List of Emergency Trip (critical) for Emergency pushbutton should be included in this document.-List of annunciator alarms to be display at CCR LCD-Grounding system for DCS system should be in seperate; Instrumenbts grounding system Power grounding system

1. Please refer to I/O list for details (F253C-K25)2. The description will be modified and added.3. Accept, CNEEC will submit.4. The instrument grounding and power source grounding of DCS system are separate. During construction design stage, the specific information will be provided.

The Grounding Philosophy of DCS are varied depending on its Manufacture. CNNC/CHPI will check with the DCS Manufacturer about the Grounding System prescribe for DCS.

In order to minimize the spare type，DEH、ETS and DCS be advised to use the same hardware.DEH adopted woodward505 (brand of america) and ETS adopted GE PLC. CNEEC will try best to let ETS and DCS hardware integrated.

DMCI/CUC accepts/confirm, CNEEC/CHPI assures that the ETS and DCS will be hardwired integrated properly.

There are no 220VDC in the DC System.The source from battery is only 52 cells of GFM-400 batteries, as specified in DC System Schematic (F253C-D13)

直流系统是110V，说明已修改。The direct current system is 110V and the specification has been modified.

220VDC should not be in the DC System.Should comply with the 110VDC

Include the following system in the basic design description: - Waste Water Treatment - Electrochlorination Plant - Fuel Oil System - Sootblower System - Limestone Handling System- Furnace Safeguard and Supervisory System - Control Fluid System - Turbine Bypass Control System

CNEEC revised the description. Please see drawing version B。Description of Turbine Bypass Control System will be added。

Include the following System and their controls and automation on this document: - Waste Water Treatment - Electrochlorination Plant - Control Fluid System - Fuel Oil System - Sootblower System - Limestone Handling System

Please see drawing version B。Waste Water Treatment will adopt local control mode。Electrochlorination Plant，Sootblower System will adopt PLC control。Control Fluid System，Fuel Oil System，Limestone Handling System will control in DCS.

Large LCDs aside from LCDs on operator consoles should also be provided for monitoring of important parameters (Drum level, pressures, vacuum..etc.). It serves as an instant access on the values when LCDs on the operator console are used to monitor other process and system.

DMCI confirms. CNEEC/CHPI will supply drum level TV and plant and main buliding TV, but no large LCD.

Section 9.3, Turbine trip should also include the ff: Vacuum Low, EH oil pressure low, Bearing Metal Temperature High, and Emergency trip button

Turbine trip Include Bearing Metal Temperature High, and Emergency trip button, but Vacuum Low, EH oil pressure low just for alarm.

Central Control Room And Electronic Control Room Lay-out Drawing

.Should reflect in the drawing the control engr. Station of each respective BOP control. As mentioned in F253C-KO1 that PLC will be controlled at local control, the console Should show. . Each wires should identify accroding to type (F.O/UTP/HARDWIRED)

Common Control system should have a separate DCS Cabinet.Ash Handling System- Fly Ash and ESP should have separate Control System. (TURBINE AND BOILER Control System will be must be a propriatary bvy OEM)

Common Control System has small number of I/Os and it will be connected to Boiler and Turbine DCS Control Cabinet.

Boiler Control panel refers to Drum Level Monitor (TV) not for Boiler DCS Cabinet. The Boiler DCS Cabinet is counted in DCS Cabinet.

Some systems are missing, it at least includes air compressor system, limestone convey system, diesel oil pump system, electrolysis chlorination system，bottom ash handling system.

This project is 15MW unit, so the IO points of compressed air system, oil pump house's ignition oil system(oil unloading pump controlled locally, and oil supply pump controlled in DCS) and bottom ash handling system are a few. They will be controlled in boiler and steam turbine's DCS cabinet, so will not be shown separately. Electrolysis chlorination system will be controlled by PLC, and this part has been modified.

Include the ff. systems: - Electro-chlorination Plant - Fuel Oil system - Limestone Handling System - Waste Water Treatment

CNEEC/CHPI revised the drawing. Please see drawing version B。Electrochlorination Plant will adopt PLC control。 Waste Water Treatment will adopt local control。Fuel oil system，Limestone Handling System will control in DCS.

Note #1:Field Instrument: Needs Isolating Valve Of All Field Instrument Which Is Pressure,Level,Pressure Diff.Flow Transmitter And P.S Pressure Switch For Safety Purposes, For Replacement Of Instrument Or Re-Calibration Online.

Yes, CNEEC confirm.The isolating valves will be reflected in instrument valve list and hook up drawing.

CNEEC/CHPI will provide a details in hook-up drawing, and also provide instrument valve and instrument pipe list.

For VFD AO change ZT to ST since VFD generates Frequency/Speed not Valve Position.1CH001CFD01MTR (VALVE POSITION) ZT1CH001CFD02MTR (VALVE POSITION) ZT1CH001CFD03MTR (VALVE POSITION) ZT

The instrument serial number is continuous, so the quantity can be counted, which will be reflected in the equipment list during construction design stage. Regarding primary element's quantity, Please refer to legend F253C-A02. Here are double element.

CNEEC/CHPI replies that to enumerate the instrument in sequence number will make the drawing crowded that is to limit the space in drawing sheet. And the detail was in Instrument List which will be provided during detail design.

Noter #3:ESP Hopper; Flag Reference Of Esp Hopper Should Show The Break/Continuation Process And The System.Note #4; Slide Damper: Needs Dcs Signal For Slide Damper Di And Do And Reference; Details Of Slide Damper; How Slide Damper Works.

CNEEC/CHPI repliest that the inlet valve of ESP is normal open. It can be operated only when failure happens. It is manually operated.

Note# 4 Analyzer Symbol: Needs Detailed Reference Of Analyzer And Correct Symbol Because Of Inconsistency Symbol P&Id (At)

Note#6 Coal Feeder 1,2 & 3: Coal Feeders 1,2 And 3 Are Vfd Motors. It Is Necessary To Put Zt Valve Positioner. Please Advice Information For This Process Flow Diagram And Other Control Parameters For Coal Feeder.

The coal feeder's speed varies which is controlled by VFD. The coal consumption 20.8t/h at BMCR condition. The max. output of coal feeder is 12t/h. On the Normal condition three sets coal feeder operation.

Note #7 & 8 Cyclone stop Valve and Cola gate Valve; Need To Designate The Flag Reference And Drawing No.

CNEEC/CHPI replies that the damper of sealing air duct is normally open in a fixed opening required for boiler's operation.

Note #11 What will the control to be used? :Give Detailed Information Of This Valve And How It Works. The Symbol Has No Information For Control Or Actuator To Be Used.

CNEEC/CHPI replies that the damper of fans' outlet is normal open. It can be operated manually only when failure happens.

Note #12 Motorized 4 to 20 Ma Feedback(Zt Symbols)Please Advice For Zt-Valve Position 4-20 Ma Transmitter Signal

CUC accepts the reply of CNEEC/CHPI that the revert air temperature is high and TE0107 is used to calculate the temperature compensation of revert air. CNEEC/CHPI changed the description of LOOP SEEN FAN to HP FLUIDIZED AIR FAN. See Rev.B. F253C-J02 and will be modif ied in F253C-K04 P&ID.

Note #1 ;Fast Acting Valve:Need fast acting valve feedwater or steam system.(Pneumatic valve)

CHPI will revise the drawing and Dosing System P&ID will be provided during detailed design. Dosing System will be at conventional push button control.

NOTE 2. Wrong descriptionTE0212 was wrong description of I/O List at I/O List 9/55.

Accept. And revised. Here it should be "High temperature superheater inlet header temperature", which has been modified in the drawing.

NOTE # 3: Indicate reference drawing number.reference drawing number should need indicate for easy tracing.

NOTE # 4: Break processBreak process/continuation are need labelled for easy tracing line from both sides of the Break.

NOTE # 5: All flow transmitter should need proper isolationflow transmitter water & steam system will erect five manifold valve.


CNEEC/CHPI confirm.The isolating valves will be reflected in instrument valve list and hook up drawing.

NOTE # 6: P&ID symbol this is LITS or LT.- incosistent

NOTE # 7: ** All instruments: Need isolating valve of all field instrument which is pressure,level, flow transmitter and P.S-pressure switch, for safety purposes and replacement of instrument or re-calibration.



The manual by-pass valve for water supply control valve group (LCV0201/0202)should be designed.

Instruments should be provided with isolating valves for maintenance purposes.

Include Legends and Symbols for easy reference.

Use standard symbols for all the drawings for consistency.

CNEEC confirm.The isolating valves will be reflected in instrument valve list and hook up drawing.

NOTE 1.Wrong instrument loop no. 0301.Need to be changed to 0302 loop no.

Check the location of 1F000561F00062(Return Bypass pipe)

CHPI interchanged the valves 1F00056 and 1F00057; 1F00060 and 1F00061

NOTE 2. Indicate DWG#/Terminal pt.#reference drawing number should need indicate for easy tracing.NOTE 3: Indicate line arrows for flow directionPlease clarify pipelines and flows for easy tracking/tracing.

NOTE 4: Break processBreak process/continuation are need labelled for easy tracing line from both sides of the Break.

NOTE # 5: ** All instruments need proper isolationNeed isolating valve of all field instrument which is pressure,level, flow transmitter and P.S-pressure switch, for safety purposes and replacement of instrument or re-calibration.



NOTE # 6: Break processBreak process/continuation are need labelled for easy tracing line from both sides of the Break.

NOTE # 7: I/O Fault alarmNeed DI fault or fail alarm for retract or extend page 22/55 at I/O List (for Oil Gun and Ignitor)

The temperature measuring points of oil tank top should be designed, and it shall be interlocked cooling water valves. Fire water can also be used of cooling water.

CUC accepts, the rejply of CNEEC/CHPI that when malfunction happens, the fuel oil can be cut at once. The code requires this valve. CNEEC/CHPI will adopt volume type flow measurement deviec, it install in pipe directly,and no need isolation valve。CNEEC/CHPI will adopt volume type flow measurement device, it install in pipe directly,and no need isolation valve。

Two (2) suction strainers should be installed in case one strainer is clogged up, the other can be used.

Install also differential Pressure transmitter.

CNEEC/CHPI will provide two strainer at suction of the oil supply pump and the existing strainer will be removed. The drawing will be modified with proper instrument needed.

Please see drawing version B。

NOTE # 1 : ** Where is pneumatic signal for this valve?How about the instrument air for this pneumatic actuator? How actuate if theres no instrument air for this valve.

The air source of pneumatic valve is from instrument air of compressed air system. When there is no air source, the pneumatic valve is closed.

DMCI accepts the reply of CNEEC/CHPI that the air source of pneumatic valve is from instrument air of compressed air system. When there is no air source, the pneumatic valve is closed.

1AH0173P not found in I/O listI/O 539 not found in P&ID

NOTE # 2 : Need Temperature IndicatorFor safety and for monitoring to the local that the heater was high temperature.

NOTE # 3 :How about Feedback Why theres no DI feedback for valve opening at (Dwg. No. f253-k23) I/O List page 25/55 HV.

DMCI accepts the reply ,of CNEEC/CHPI that there is no DI feedback signal. Pneumatic is operated via solenoid but solenoid has no feedback signal.

NOTE # 4 : ** All instruments needed proper isolation.Need isolating valve of all field instrument which is pressure,level, flow transmitter and P.S-pressure switch, for safety purposes and replacement of instrument or re-calibration.



NOTE # 5 : Indicate drawing number reference drawing number should need indicate for easy tracing.NOTE # 6 : Flow arrow Indicate line arrows of each turn of line for easy reading of Flow diagram of P&ID.





Please see drawing version B。

Show specific connection of limestone feeding going to the furnace. (will it be directly injected inside the furnace, or through the secondary air ducts or through the pipes on the “J” valve)

It's service air, and please see drawing version B。

On the heater, a temperature indicator and transmitter should be installed for heater control and automatic shut off if very high temperature is reached.

CNEEC/CHPI wrevised the drawing. Please see drawing version B。Temperature indicator and RTD will be supllied , and instrument tag no.1TI4851 and 1TE4851.

Turbine Steam & Water System P&I Diagram

NOTE # 1 :All Break process.All Break process/continuation are need labelled for easy tracing line from both sides of the Break.

CNEEC/CHPI replies, Tapping point for Sootblower steam will not be determined at this time, the tapping point will be determined by Boiler manufacturer. Details will be given during the detailed design.

NOTE # 2: ** All instruments need proper isolation.Need isolating valve of all field instrument which is pressure,level, flow transmitter and P.S-pressure switch, for safety purposes and replacement of instrument or re-calibration



NOTE # 3 :Rear cyclone spray water solenoid valve open feedbackHow about feedback of valve opening @ I/O List page 29/55.

DMCI accepts the reply of CNEEC/CHPI that the refered valve is solenoid valve, which has no feedback signal.

NOTE # 4 : Flow arrowsShould indicate Flow arrows on each turn line of process. For easy reading of diagram.NOTE # 5: Reference from bottom ash and to bottom ash cooler.Indicate reference drawing number for easy tracing if where terminates.

There haven`t fast acting requirement in MTD.If it is possible in the market, CNEEC will do the best.

There haven`t fast acting requirement in MTD. If it is possible in the market, CNEEC will do the best.





CNEEC/CHPI revised the drawing. Please see drawing version B。

2


ITEM DOCUMENT TITLE DMCI COMMENTS DMCI EXPLANATION RESPONSE OF CNEEC CUC RESPONSE DMCI RESPONSE DMCI COMMENT REV.B DMCI/CUC/CNEEC/CHPI RESPONSE COMMENT TYPE REMARKSsmc RESPONSE

SMC show instrumentations for normal and emergency drains for monitoring and controlling. CNEEC/CHPI will supply additional drawing for Turbine Drain System Closed

SMC Vent air fans should be renamed to gland steam exhauster fans. CNEEC/CHPI replies, vent air fan is named by manufacturer. Closed

81 DMCI Accepted Heater not found in I/o List CNEEC/CHPI will revise the I/O list Closed

DMCI Accepted, and revised. Accepted

DMCI Accepted

DMCI . Accepted, and revised. Accepted

DMCI Accepted and refer to F253C-J06 for specific cooling water system drawing Accepted


SMC Closed


SMC indicate supply and return lines for easy tracing of system flow. Use arrow for flow. CNEEC/CHPI accepts, and revise. ClosedSMC oil/air separator should be provided to prevent oil from exhausting in the atmosphere. CNEEC/CHPI comfirms to provide oil/air separator.

SMC There are two auxiliary oil pumps, identify which is the turning gear oil pump from the drawing and label such. Closed

SMC Indicate equipment label for Main Oil Pump CNEEC/CHPI accepts, and revise Closed

82Feed Water System P&I Diagram DMCI LITS is floating-ball liquid level meter. It can send 4~20mA signal and alarm signal to DCS. Accepted

DMCI Accepted



DMCI It is LITS Accepted


SMC Closed

SMC Indicate drawing numbers for all connections coming from or going to other system. ClosedSMC Indicate equipment label for Motor-driven boiler feed pumps 1, 2, and 3. CNEEC/CHPI accepted, and revised. Closed

83 DMCI Accepted

DMCI This flow indicator is used to observe whether there is water, not to measure the flow. Accepted


DMCI This is not break process line but dash dot line. And have been revised. Accepted


SMC Closed


84 Water Supply System P&I Diagram DMCI Accepted, and revised. Accepted

DMCI Accepted

DMCI Fire fighting and outlet valves are motorized, which are controlled by fire alarm panel. Accepted

CUC: The fire fighting pump will be operated on the fire alarm panel. Accepted


SMC Closed

SMC Provide backwashing valves for the condenser as stipulated in the MTD and include instrumentations. Refer to Mechanical part Item 27 (SMC comment) Closed

85 DMCI Accepted

Turbine Lube System and Turbine Proper Instrument System P&I Diagram

NOTE # 1: T/C Please enumerrate and label or indicate marking for each T/C at condenseer for easy tracing.

The instrument serial number is continuous, so the quantity can be counted, which will be reflected in the equipment list during construction design stage.For example, the TE0518 �� TE0523, it means there are six sets meters, number should be TE0518, TE0519, TE0520, TE0521, TE0522, TE0523.

NOTE # 2 : TURBINE SUPERVISORY INSTRUMENT. TURBINE SUPERVISORY INSTRUMENT is parallel to DCS to monitor to the DCS HMI not only to TSI.

NOTE # 3 : Digital Electro-hydraulic Control System. Digital Electro-hydraulic Control System is parallel to the DCS.

There already have three signal connected to DCS. This signal will not be connected to DCS, to DEH only.

NOTE # 4 : Reference DWG. No.Indicate reference DWG. No. to trace where designate this process

NOTE # 5 : all Break processll Break process/continuation are need labelled for easy tracing line of every break line process.

NOTE # 6 : Flow arrow line should indicate to the process flow diagramIndicate flow arrow of each turn of line process for easy tracing and reading of PFD.





CNEEC/CHPI revised the drawing, please see drawing version B。

CNEEC/CHPI revised the drawing. Please see drawing version B。 Turning gear oil pump is already shown.

NOTE # 1: Level transmitter not Level switch This is level transmitter not a level switch the P&ID Symbol is inconsistent and this is 4-20mA signal to the I/O List page 39/55.

NOTE # 2 : ** All instruments need proper isolation.Need isolating valve of all field instrument which is pressure,level transmitter and P.S-pressure switch, for safety purposes and replacement of instrument or re-calibration.


NOTE # 3: Wrong loop numberWrong loop number for position switch motorized valve (MV604) .NOTE # 4 : Indicate line arrows for flow directionPlease clarify pipelines and flows for easy tracking/tracing.NOTE # 5 : the symbol is inconsistent LITS change to LT symbol .Inconsistent symbolNOTE # 6 : Break processShall need reference DWG. No. for easy tracing of connection of process.





CNEEC/CHPI revised the drawing, Please see drawing version B。

Closed Cycle Cooling Water System P&I Diagram

NOTE # 1 : **All flow transmitter should need proper isolation.Need isolating valve of all field instrument which is pressure,level, flow transmitter. for safety purposes and replacement of instrument or re-calibration.


NOTE # 2 : Flow indicator.Shall indicate Flow indicator for easy reading of P&ID.NOTE # 3 : indicate the Reference DWG. No.Shall indicate the Reference DWG. No. if where the designation.

NOTE # 4 : where terminate this break process line.Break process/continuation are need labelled for easy tracing line from both sides of the Break.

NOTE # 5 : Process flow Shall indicate the process flow arrow for easy tracing.





CNEEC/CHPI revised the drawing, Please see drawing version B。NOTE # 1 :Process flowShall indicate the process flow arrow for easy tracing.

NOTE # 2 : **All flow transmitter should need proper isolation.Need isolating valve of all field instrument which is pressure transmitter and PI. for safety purposes and replacement of instrument or re-calibration.


NOTE # 3 : **How about the control of this motorized DCS or PLC.is this local control for operator only ? If not shall indicate PLC control or DCS signal.

Recommended monitor & control signal of water system for fire protection intoDCS.

CNEEC/CHPI revised the drawing, Please see drawing version B。Instruments should be provided with isolating valves for maintenance purposes.




Circulation Cooling Water System P & I Diagram

NOTE # 1 : Flow indicator shall need to show the name of P&ID name.Shall indicate Flow indicator to the instrument of P&ID and the P&ID is not consistent to the symbol the other symbol can't identify to the Process and instrument diagram.

The flow indicator is just used to observe the water flow situation inside the pipe, which is a mechanical part, not belong to instrument.

3


ITEM DOCUMENT TITLE DMCI COMMENTS DMCI EXPLANATION RESPONSE OF CNEEC CUC RESPONSE DMCI RESPONSE DMCI COMMENT REV.B DMCI/CUC/CNEEC/CHPI RESPONSE COMMENT TYPE REMARKSsmc RESPONSE



SMC Closed

SMC Indicate drawing numbers for all connections coming from or going to other system. Closed86 DMCI Accepted

SMC Closed


87Compress Air System P&I Diagram DMCI Accepted


DMCI NOTE # 3: Why no secondary filter for air receiver if the other air receiver have own secondary filter? Accepted


DMCI Accepted


Compress Air System P&I Diagram DMCI Accepted

SMC Closed


SMC Pending

88 Fly Ash Handling System P&I Diagram CUC: Accepted

Add TI at fly ash silo air heater CNNEC/CHPI will add local TI at fly ash silo air heater Closed

How is the control of the valve dischanrge of at fly ash silo? Closed

SMC Closed


89Bottom Ash Handling System P&I Diagram DMCI It is shown in I/O list Accepted


DMCI Only local operation Accepted

SMC Closed


SMC Closed

SMC Vibrating motors should be installed to loosen the slags inside the tank for easy discharge. CNEEC/CHPI confirm and provide Vibrating motors Closed

90 CUC: Accepted, and revised. Accepted Accepted

CUC: Advised to set TE1701 to primary RO inlet manifold. Accepted, and revised. Accepted Accepted

CUC: so the capacity of demineralized water pump will be considered at startup and normal Closed

SMC Closed


91 SMC Closed


92 Regenaration System for Boiler Make-up WatCUC: Accepted, this will be shown in schematic diagram of electrical local control cabinet Accepted

SMC Closed

SMC Indicate drawing numbers for all connections coming from or going to other system. Closed93 DMCI NOTE # 1: Wrong I/O Designation please check at I/O List page 55/55. It have been revised. Accepted

DMCI NOTE # 3 : indicate DWG. No. For easy tracing. Accepted, and revised. Accepted

DMCI Accepted

DMCI NOTE # 4: indicate Process flow arrow direction. Accepted, and revised. AcceptedSMC reconcile tagging/designation of instrumentations with I/O lists submitted. Closed

SMC Closed

SMC Indicate drawing numbers for all connections coming from or going to other system. Closed94 Cable Routing Drawing in Main Building95 CUC: The number of PLC station should be same as the F253C-K03. Accepted, and revised. Accepted96 Ash Handling Control Room Lay-out Drawing

97 DCS I/O List CUC: Accepted

CUC: Please add the signals of CEMS. CEMS and DSC will adopt communication. There is no hardwired signal connected to DCS the communication signals also can be indicated in drawing Closed

SMC Nos. 1128-1136, reconcile designation with drawing no. F253C-K21. Closed

SMC Clarify what is “Loop Seen Fan”. Closed

DMCI Identify which are Critical and Regulatory Signals Closed

9 Architecture and Structure

98 DMCI Accepted

DMCI Accepted

99 DMCI Accepted

1007.000 M Plan Drawing of TG Building DMCI Accepted

DMCI Accepted

101 DMCI See comments on F253C-T03 re: landings of exterior stair Accepted

DMCI Accepted

102 Section 1-1 of TG Building DMCI Accepted

103 Elevation View for Steam Side Of TG BuildingDMCI

104 Elevation View for Fixed Side Of TG BuildingDMCI See comments on dwg F253C-T05 & T06 Accepted

105

106 DMCI Accepted

107 DMCI Accepted

DMCI Accepted

DMCI Accepted

DMCI Accepted

108

109 DMCI

110 Layout of Coal Handling Building

111 Plan Drawing of Diesel Generator House DMCI Show concrete columns and thickness of walls at 150 mm + cement plaster finish on both faces.

10 Ventilation and Air Conditioning112113

114 DMCI

DMCI

DMCI

DMCI Accepted

115 Layout of Dust Collection at Coal Bunker

116 DMCI Why no exhaust fan for the rest room, office and toilet (Ground floor) Accepted

DMCI Where is the exhaust fan for control room exhaust fan is need to have air change in the room

DMCI At elevation 3.6m provide exhaust fan and aircon on each room if needed Toilet must have exhaust fan/ office must have window type aircon

11 Hydraulic

117Hydraulic Part Design Description CUC: Please provide the design temperature of sea water.

CUC: Accepted

CUC:

CUC: Accepted, and have added. Accepted, pls revise the drawing

CUC: Please provide the calculation description of the seawater direct flow supply pump head. Accepted, and revised. Accepted

CUC: Please check the capacity of existing seawater intake channel. CNEEC already check. The capacity of existing seawater intake channel meets the design requirements.

Hydraulic Part Design Description CUC: Accepted, and have added. Accepted, pls revise the drawing

CUC: The waste water treatment system meets the requirements of MTD.

118

119 Flow Diagram of Water Supply System CUC:

120Water Balance Drawing CUC:

CUC

CUC

121 Layout of Seawater Direct Flow Supply Pipe

122 CUC:

123 CUC:

General Comment (OWNER) SMC CNEEC reply: For the numbering system, Please refer to the new document (F253C-A04, F253C-A05

SMC CNEEC reply: Please refer to the new drawing & document (Rev.B)

SMC CNEEC reply: Please refer to the new drawing & document (Rev.B)

SMC Please see spelling and grammar editing in pdf file, if any CNEEC reply: Please refer to the new drawing & document (Rev.B) Accepted

NOTE # 2: indicate flow arrow for direction of process.shall indicate the flow arrow of the process for easy tracing of process flow.

NOTE # 3: shall indicate reference drawing.Shall indicate reference drawing no. if where designate the process connection.





CNEEC/CHPI revised the drawing, see drawing version B。Sewage Water Treatment System P&I Diagram





CNEEC/CHPI revised the drawing, see drawing version B。

NOTE # 1 : Air Compressor system included two compressor and three air receiver.NOTE # 1 : Base in the MTD the air compressor system included two air compressor and three sufficient volume air receivers with filter,dryers etc. but in the P&ID should not indicate the third air receiver please revise this drawing (4.7 compressed air Page 20/90).

According to the contract and the actual air consumption, the compressed air system process has been optimized. For this project, 3 air compressors(2 operation & 1 standby) and 2 air receivers will be used, and per capacity of air compressor is 13m3/min(9.8m3/min in MTD). 2 operation & 1 standby is better than 1 operation & 1 standby and 2 air receivers can meet the requirement of system.

NOTE # 2: how about switch position ZS symbol for feedback?Shall be need indicate to the P&ID drawing ZS at motorize for feedback.

This compressed air is service air for maintenace, it is not instrument air. It use for the compressed air tools, so there no need.

NOTE # 4: **Inconsistent symbol can't identify to the P&ID.Drain trap symbol is inconsistent symbol to the P&ID can't identify.

NOTE # 5 : **all Pressure instrument shall be needed isolating.Need isolating valve of all field instrument which is pressure transmitter for safety purposes and replacement of instrument or re-calibration.


NOTE # 6:no reference drawing for easy tracing.shall indicate Drawing number for easy tracing.

NOTE # 7 :why three air compressor indicate in this drawing but base in MTD theres only two compressor. The MTD reference have only two compressor. is it the third compressor is for spare incase of emergency or back-up?.

According to the contract and the actual air consumption, the compressed air system process has been optimized. For this project, 3 air compressors(2 operation & 1 standby) and 2 air receivers will be used, and per capacity of air compressor is 13m3/min(9.8m3/min in MTD). 2 operation & 1 standby is better than 1 operation & 1 standby and 2 air receivers can meet the requirement of system.






it only shows two (2) air tank receivers, MTD stipulated that three (3) air tanks will be supplied and installed.

Two air receivers will be used as service air while the third air receiver will be used as instrument air.机务/ Pending and will be discuss with Mechanical group

There are no pressure transmitters and level on ash vessels. Why? How does itwork?

CNEEC has already considered this pressure transmitter, which will be supplied with jet pump. It will be specified in future information.

CNEEC/CHPI will revise the drawing with pneumatic three-way valve controlled by PLC at discharge of Fly Ash Silo.





CNEEC/CHPI revised the drawing, see drawing version B。NOTE # 1: No local remote at I/O List page 54/55.how about the local/remote control of ash cooler?

NOTE # 2: Wrong tapping of level transmitter. The level transmitter should tap at the top of bottom ash silo because the material of silo is noncombustible coal not water the transmitter is ultrasonic or laser type.

NOTE # 3: Hardwired pushbutton motorize.Is this a local control only by operator? or shall need PLC control?





CNEEC/CHPI revised the drawing, see drawing version B。Alarms and interlocks should be provided for monitoring.

“Accident Bottom Ash” should be re-translated. Use appropriate English translation.CNEEC/CHPI confirm and changed.(it was changed to Emergency Bottom ash see reply of CHPI/CNEEC comments in Bottom Ash system)

Boiler Make-up Water Treatment System P&I Diagram

Proposal adding the measurement instrument of water flow and electricconductivity at the demineralized water pipe that send to main building .

Please describe control relationship of between demineralized water pump anddeaerated water tank level .

The water level of deaerator tank will be controlled by tank's inlet makeup water regulating valve according to the water level.

CNEEC/CHPI confirm demineralized water pump operation requirement at startup and normal running condition.






Boiler Make-up Water Treatment Dosing and Auxilliary System P&I Diagram





CNEEC/CHPI revised the drawing, see drawing version B。Recommended adding interlock between the pumps (M1751, M1752) and liquidlevel ( LI1751,LI1752).





CNEEC/CHPI revised the drawing, see drawing version B。Water and Steam Sampling System P&I Diagram

NOTE # 2 : ** all Pressure indicator and flow switch shall be need isolating valve.Need isolating valve of all field instrument which is pressure indicator, flow switch, for safety purposes and replacement of instrument or re-calibration.


CNEEC/CHPI revised the drawing, see drawing version B。Instruments should be provided with isolating valves for maintenance purposes.





Water Treatment Control Room Lay-out Drawing

The SV0301 and SV0302 are solenoid valves in drawing F253C-K06, but thesignals of IO list are for motor valve. Please confirm which one is correct. SV0301、SV0302 are solenoid valves. CNEEC have been revised.

CHPI will revise the drawing, the communication between CEMS and DCS will be shown in drawing F253C-03,CNEEC/CHPI revised the drawing, see drawing version B。

CNEEC/CHPI changed the description of LOOP SEEN FAN to HP FLUIDIZED AIR FAN. See Rev.B. F253C-J02 and will be modif ied in F253C-K04 P&ID.and I/O list will be modified.

The requested Signals (critcal and regulatory) was already sent to CNEEC, snd CNEEC will provide a copy to DMCI

Architecture and Structure Design Description

Refer to Item 2.3 of Basic Design Report. Please provide wind pressure calculation for a height of 7meters(as specified at Turbine Hall) and 23meters(as specified at Coal Bunker Bay).Wind pressure varies with height, so please provide such pressure for 7m and 23m.

7m wk=1×0.8×1.25×1.063=1.063(kN/m²) 23m wk=1×0.8×1.68×1.063=1.429(kN/m²)

Please provide Basic Design drawings and calculations for Civil/Structural works. Your submittal does not have a copy of Civil/Structural drawings to review and comment.

接受意见，将修改。Accept DMCI's comment, will revise.

± 0.000 M Plan of TG Building What is the means of access to the level of underground facilities in the TG building?Drawing does not show or call out any means of access to level -2.00 of the TG building.

是直爬梯。附图问题答复：一般散水宽度大于等于1m，一般大门坡道宽度为2.4米。以上数据初步设计不需表示，应在施工设计时确定。That is vertical rung ladder and access to level -2.00m of the TG building. The following reply for the question on the drawings: The width of apron is ≥1m. Normally the width of gate's ramp is 2.4m. These data above,which will be decided during construction design, is unnecessary to show.

Provide separate entrances for men's and women's toilets; and use western type water closets. Traditionally, toilets in the Philippines have separate entrances

接受意见，已按要求修改图纸。提醒DMCI，若如此修改，男厕门正对吊物孔。Accept DMCI comment, and revised drawing according requirement. We want to remind DMCI, if this modification is taken, the door of Men's toilet is right pointing to the hole for hanging and hoisting.

Level of landings in exterior stairs should be lower than the interior floor level.Level of landing outside should be lower to prevent wind-driven rain water from creeping into the interior.

接受意见。室外楼梯平台标高降低了50mm。Accept DMCI comment. The elevation of outdoor platform(staircase landings) lower 50mm.

4.000 M,13.000M, 23.000M Plan of TG Building

接受意见。室外楼梯平台标高降低了50mm。Accept DMCI comment. The elevation of outdoor platform(staircase landings) lower 50mm.

Where does the stairs at level +23.000 lead down to?Drawing is not clear where the stairs near axis-1 and axis-B leads down to.

接受意见，已修改图纸。该楼梯是去13米层与23米层之间休息平台的楼梯。Accept DMCI comment., and revised drawing. It is staircase rest platform between +13.000m and +23.000m

Slope the roof of the TG hall down to exterior wall side with the gutter and downspouts possibly on the exterior.Sloping the roof to one side avoids interior gutter which is prone to overflowing and possible leaking in case of extra heavy rain.

接受意见。Accept DMCI's comment, and revised.

Identify which openings are for louvers and which are for windows.Drawings shows only rectangles, presumably openings for windows and louvers.

首先，CNEEC提供建筑总图，而详图由DMCI按菲律宾建筑标准设计，而窗户的型式是在详图中确定的，因此具体选何种窗户，由DMCI设计并提供。First of all, CNEEC provides the general layout drawing, detail drawing should be designed by DMCI according to Philippines standard and the type of window should be determined in detail drawing. Therefore type of window will be chosen, designed and provided by DMCI.

接受意见，已修改。Accept DMCI's comment, and revised.

Plan Drawing of Underground Facilities of TG BuildingPlan Drawing of Fly Ash Handling System Control room and Air Compressor House

Walls to be 150 mm thick concrete hollow blocks with cement plaster finish on both faces.Drawing shows extra-thick walls. Please verify.


Plan Drawing of Chemical Water Treament Room

Provide additional window to the toiletsToilets don’t have sufficient natural ventilation


Move the lavatory inside the men's room Lavatory near the entrance door blocks the passageway


Use western type water closet.Traditionally, water closets in the Philippines are Western type.


Fire escape should be located at the other end of the hallway along axis-A.Fire escape is needed at the other end of the long corridor


Section and Elevation of Chemical Water Treatment Room

Plan Drawing of Auxiliary Chemical Equipment Room

Is the auxiliary chemical equipment room an open shed or an enclosed room? Drawing shows only 4 columns around the tanks. Please provide more information on the drawing.

The auxiliary chemical equipment is an open shed. Will provide more in formation on the drawing, Please refer to drawing F253C-T12(Rev.B)

建筑为钢结构。接受墙厚度为150mm的意见。The building is steel structure and the concrete hollow blocks of 150mm for wall's thickness is accepted

Ventilation and Air Conditioning Design DescriptionSection Drawing of Ventilation in Main Building

Plan Drawing of Ventilation and Air Conditioning in Main Building

How much heat is dissipated at electronic equipment control room, central control rom and chemical sampling room and what air change on each roomHeat dissipation should be considered in the design of airconditioning

电子间、主控室、化水取样间设计冷负荷分别是24kW、24kW和5kW，换气次数均为>5次/小时.

在空调设计中，已经考虑这些冷负荷。 Heat dissipated at electronic equipment control room, central control rom and chemical sampling room are 24kW,24kW, and 5kW. air change on each room is more than 5 times per hour.Heat dissipation has been considered in the design of airconditioning.

How many microns are the filters of airconditioning unitsHighly corrosive & sandy area must be considered in choosing filters

空调机组过滤器为50目，约为0.3mm.

选择过滤器时，将考虑高腐蚀及沙尘环境。The filter of each airconditioning unit is 0.3mm.Highly corrosive & sandy area will be considered in choosing filters.

What are the relative humidity of the roomsDid this satisfy the 40-60% relative humidity as per Ashrae Standard?

空调房间设计相对湿度为50%~60%The relative humidity of the aircon rooms is 50%~60%. The data meet with DL/T 5035-2004 standard.

Is there a contaminant removal in the design for outdoor air?No equipment specified

本项目设计的空调不是中央空调，而是柜式空调。空调入口已考虑滤网。AC 设备规范将在施工设计阶段提供。For semirara project, the central AC system is not considered, and the cabinet AC is adopted. There is filters on the inlet of AC.The AC equipment will be submitted in the detail design stage.

Layout of Ventilation and Air Conditioning in Chemical Water Room


化学水车间控制室不需要设置通风机，已设置空调The exhaust fan is not needed for DM water control room. And there is aircon.

化学水车间3.6m层不需要设置空调机，煤分析室和水分析室设置通风橱，化验室仓库设置通风机，其他房间均不设置通风机，自然通风。The aircon is not needed to for 3.6m rooms. Exhaust fans is installed in Laboratory warehouse, and VENTILATING CABINETS are installed in Water analysis room and Coal analysis room. Other rooms will not set exhaust fans, and natural ventilating wil be adopted.

海水温度为28~32℃，并将在资料中体现。According MTD, the sea water temperature 28 ~ 32 ° C, which will reflect in the data.

Please provide the basis of design temperature.需说明温度取值的依据。

Please pay attention to the power frequency, which is 60Hz. Pump impeller or the electromotor should be designed to adapt the frequency.

水泵等机械转动设备，我们是按照60HZ进行选型的，并也会在订货时向厂家强调此项要求。We select pumps and other mechanical rotating equipment in accordance with 60Hz, and when ordering, this requirement also will be emphasized to manufacturers .

Chapter 1.4: The effluent water treated by the coal sewage disposal house should be reused for ground flushing in the turbine hall, deaerator & coal bunker and ash silo. The flushing drainage should be collected to the coal sewage disposal house for treatment. Please verify and update.

含煤污水处理后的水已经回用，给皮带栈桥冲洗使用了。给灰库、除氧煤仓间、汽机房冲洗用水已改为：采用排污降温池排水。The coal waste water has been reused after treatment, it is used for flushing trestle. The water for flushing ash silo, deaerator & coal bunker bay house and STG house has been changed into using blowdown lowering temperature pond to drain.

Please provide the modified water balance drawing.请提供新版的水量平衡图。

Chapter 2: Please provide the following drawings: *Elevation drawing of sea water supply system *General arrangement of seawater intake station plan view *General arrangement of seawater intake station sectional view

Please provide the detail description.请提供详细说明。

Chapter 3:Please provide the following drawings: *General arrangement of comprehensive water pump shelter plan view *General arrangement of comprehensive water pump shelter sectional view

Chapter 5The water quality of drainage should meet the requirement of local standard.


General Layout of Hydraulic Architectural and Structure Building

The ground flushing water for the turbine hall, deaerator & coal bunker, ash silo should use the effluent water treated by the coal sewage disposal house. Please verify and update.


Please provide the modified water balance drawing and flow diagram of wter supply system. 请提供新版的水量平衡图及供水系统图。

The ground flushing water for the turbine hall, deaerator & coal bunker, ash silo should use the effluent water treated by the coal sewage disposal house. Please verify and update.


Please provide the modified water balance drawing and flow diagram of wter supply system. 请提供新版的水量平衡图及供水系统图。

The boiler blow down should be reused, which is of good quality.Please verify and update.

给灰库、除氧煤仓间、汽机房冲洗用水已改为：采用排污降温池排水。The water for flushing ash silo, deaerator & coal bunker bay house and STG house has been changed into using blowdown lowering temperature pond to drain.

。Please provide the modified water balance drawing and flow diagram of wter supply system. 请提供新版的水量平衡图及供水系统图

The discharge of oil sewage disposal house ,chemical water treatment house should be collected to the drain-pipe, those should be shown in the drawing.

厂区排水管道将在施工设计时详细表示。During construction design, details of plant drain pipes will be shown

Please show the flow direction in the water balance drawing as domestic wastewater.请在水平衡图示意。

Flow Diagram of Coal Water Treatment Facility

The effluent water treated by the coal sewage disposal house should be reused for ground flushing in the turbine hall, deaerator & coal bunker and ash silo. The flushing drainage should be collected to the coal sewage disposal house for treatment. Please verify and update.


。Please provide the modified water balance drawing and flow diagram of wter supply system. 请提供新版的水量平衡图及供水系统图

Flow Diagram of Oily Water Treatment Facility

The water quality of drainage should meet the requirement of local standard.

已满足业主要求。This already meets the requirements of design.


Standard Plant Identification numbering systemMust Include SPIN as agreed.

Request that in the drawings, each equipment should have its equipment name as its labelEach equipment must be properly labeled instead of just indicating legend number.

Please indicate SMC drawing numberSMC - XX – YYYYWhere XX = DisciplineGE – GeneralME – MechanicalEE – ElectricalCA – Control & InstrumentationCE – CivilAR – ArchitecturalYYYY = Drawing Sequence No.


ITEM DOCUMENT TITLE DOCUMENT NUMBER SMC COMMENTS SMC EXPLANATION RESPONSE OF CNEEC REMARKS

BASIC DESIGN DOCUMENTSBATCH 1

1 Coal Handling1 Coal Handling System Design Descripti F253C-M012 Flow Diagram of Coal Handling System F253C-M023 General Layout of Coal Handling Syste F253C-M034 F253C-M04

5 F253C-M05

6 F253C-M06

2 Ash Handling7 Ash Handling System Design Descripti F253C-C01

8 F253C-C02

9 Flow Diagram of Fly Ash Handling Syst F253C-C03

10 Flow Diagram of Limestone System F253C-C04

11 F253C-C05

12 Layout of Bottom Ash Handling System F253C-C06

13 Layout of Bottom Ash Silo F253C-C0714 Layout of Fly Ash Handling System F253C-C0815 Layout of Fly Ash Silo F253C-C09

16 Layout of Limestone Powder Silo F253C-C010

BATCH 23 General

17 F253C-A01

18 Main Equipment List F253C-A0219 F253C-A03

4 General Layout20 General Layout Design Description F253C-ZO121 Overall of Plan F253C-ZO222 General Layout of Power Plant F253C-ZO323 Vertical Layout of Power Plant F253C-ZO424 Plan drawing of Pipe in the Plant F253C-ZO5

5 Mechanical

25 Mechanical part design description F253C-J01

COMMENT TYPE

Section I - I (General Layout of Coal Handling System)Section II - II (General Layout of Coal Handling System)Section III - III (General Layout of Coal Handling System)

Flow Diagram of Bottom Ash Handling System

CNEEC should provide one standby and one operational for scrap conveyor and bucket elevator. for redundancy or continous disposal of bottom ash.CNEEC should provide only one type of ash unloader dry type is better.so that we will purchase only one type of truck for this purposeNeed specs for limestone tank Truck ( Bulk Unloader). We don’t have this truck locally

Plan Drawing of Fly Ash and Bottom Ash Handling System

CNEEC should provide one standby and one operational for scrap conveyor and bucket elevator. for redundancy or continous disposal of bottom ash.

General Design Description and Design Document List

Change from "four duty three shift system" to 2 shift system. SMC adopts 2 shift system (12 hours each shift)

MTD第7.0条，注明为：4班3倒。若采用2班制，也不影响设备选型。According to item 7.0 of MTD, it is "four duty three shift system" but if 2 shift system is used, which will not affect the type selecting of equipment.

Piping & Instrumentation Diagram System and Legends

All supply pump must have pressure gauge or monitor. To monitor pump efeciency

是的，每个泵出口都有压力测量。Yes, there are pressure gauges on every pumps' outlet.



BASIC DESIGN DOCUMENTS

COMMENT TYPE

26 Flow Diagram of Combustion System F253C-J02

27 F253C-J03

28 Flow Diagram of Fuel Oil System F253C-J0429 F253C-J05

30 F253C-J06

31 Compressed Air System Diagram F253C-J07

32 Layout of 0m in Main Building F253C-J0833 F253C-J09

34 Layout of Each floor in Main Building F253C-J1035 Section Layout of Main building F253C-J1136 Layout of Air Compressor Room F253C-J1237 Layout of Oil Tank Area F253C-J1338 F253C-J1439 Painting specification F253C-J15

6 Chemical

40 F253C-H01

All heat exchanger must have thermometer gauge or temp. monitor to in/out of the cooler. To determine the H.E. condition

是的，都有温度计。Yes, there are thermometers.

Flow Diagram of Thermodynamic System

Feedwater pumps will be reduced to two (2) units but with capacity of (38x2)=76m³/hr at a pressure of 7.24mPa each. if the two working feedwater pumps will be damaged simultaneously the 3rd pump(standby) cannot cope-up the capacity of 65t/hr of steam in order to maintain the 15mw output. Its better to putv-up two (2) units w/ capacity of 76m³/hr and 7.24mPa each.

CNEEC设计符合相关规范要求。另外，MTD中4.13条也要求为3x55%的电动给水泵。CNEEC's design complies with relevant codes. Besides, item 4.13 of MTD requires motor pumps of 3x55%

Flow Diagram of Closed Cycle Cooling Water SystemFlow Diagram of Circulating Cooling Water System

Air compressor to increase cap to 26Nm³/min. 1-work; 1-standby; 1 diesel

2运1备在安全性上高于1运1备。柴油空压机MTD没有要求。2-work & 1-standby is safer than 1-work & 1-standby. MTD didn't require the diesel air compressor.

Layout of Operation Floor in Main Building

Section Drawing of Circulating Cooling Water Tower

Chemical Water Treatment System Design Description

Pre treatment such as floucculation & sedimentation, clarification, multi-media filter, active carbon filter, & RO systems are okay. But the mixed bed is already obsolete process. This is similar to the process used in our old water treatment plant, although it is twin bed. but bothn use hazardous chemical such as caustic soda and hydrochloric acid in the regeneration process, which are very difficult to handle because they have corrosive properties and can affect surrounding structures if not handled properly. then there is a need to construct a neutralization pit which is also an additional water treatment facility(for waste water)

合同中要求为混床。The contract requires mixed bed.

There is a latest technology called Electronic De-Ionization System (EDI) which utilizes electric current as regeneration medium without the need of hazardous chemicals such as hydrochloric acid and caustic soda. This is very convenient to use especially in big power plants because there is no need for neutralization pit. this unit is now used by Semirara Power Plant.




COMMENT TYPE

40 F253C-H01

41 F253C-H0242 F253C-H03

43 F253C-H0444 F253C-H05

45 Layout of Chemical Water Treatment F253C-H0646 F253C-H0747 Flow Diagram of Chemical Dosing Syst F253C-H0848 Flow Diagram of Chlorination System F253C-H09

49 F253C-H1050 F253C-H1151 Layout of Equipment in Chlorination S F253C-H1252 F253C-H13

7 Electrical53 Electrical System Design Description F253C-D01

54 Key Electrical Single Line Diagram F253C-D02

55 F253C-D03

Chemical Water Treatment System Design Description

Amonia is not recommended in the boiler system because in the the presence of oxygen, it can attack copper alloys. Besides, it is also considered as hazardous chemical. The oxygen scavenger and corrosion inhibitor currently recommended for boiler system is DEHA (Di-Ethyl-Hydroxyl-Amine). This is less hazardous and non carcinogenic. pH ajuster and oxygen scavenger are the same. No need to use amonia dosing if we use DEHA as oxygen scavenger.

氨加药装置是用于调节锅炉给水PH值的，不是用于除氧的。DMCI的邮件要求采用ZI-CHEM 1240代替联胺作为除氧剂。The contract requires to set ammonia dosing device and hydrazine dosing device. The ammonia dosing device is used for adjusting the pH of boiler's feed water not for remove O2. DMCI's e-mail requires to use ZI-CHEM 1240 to replace hydrazine as remove Equipment List of Boiler Make-up

Water Treatment SystemFlow Diagram of Boiler Make-up Water Treatment SystemFlow Diagram of Boiler Make-up Water Treatment Dosing and Auxiiliary SystemFlow Diagram of Regeneration System for Boiler Make-up Water TreatmentFlow Diagram of Water and Steam Sampling System

Layout of Equipment in Water & Steam Sampling SystemLayout of Equipment in Chemical Dosing SystemFlow Diagram of CW Scale Inhibitor Dosing System

CNEEC should provide 34.5KV panel for standby start-up and 20MVA transformer.we have only one spare switchgear in our 34.5KV switchgear#1. in the MTD "Main Equipment List page 18/26, 3.1.10, CNEEC will provide 2 pieces 34.5KV panel and its in their scope of work.

This 34.5KV switchgear's design is out of CNEEC's scope. According to MTD equipment list, CNEEC can supply 2 pieces 34.5KV switchgears but the specific parameters and dimension need the owner to provide.And the owner will be responsible for layout, connecting and rehabilitation of original switchgear. Besides after site inspection, we found there were no space for these two in the 34.5KV distribution room.

CNEEC should clarify if LV aux. and startup/standby transformer are rated 3150KVA or 2500KVA. in MTD"Main Equipment list" page 14/26 & 15/26 and in Basic Design "Electrical Part" page 8, the ratings are 2500KVA respectively while in Drawings F175-D01 at MTD and F253C-D02, the ratings are 31500KVA respectiively

The final capacity will be determined during construction stage.

CNEEC should provide a 13.8KV switchgear and synchronizing panel for switching, isolation and synchronizing 15MW Generator, 20MVA transformer and auxilliary transformer. Synchronizing Panel of the 34.5KV switchgear #1 is very far from the control room of the 15MW generator. When tere is fault or damaged on auxilliary transformer then can be isolated from the system.

Accepted. And the Synchronizing function will be done by fast change-over device

Short-Circuit Current Calculation Sheet




COMMENT TYPE

56 Auxiliary Power Single Line Diagram F253C-D04

57 F253C-D05

CNEEC should provide Automatic Transfer Switchb (ATS) for supplying Power to 380V control MCC for DC & UPS system. in order not to overload the 200kw, 380V Diesel Engine Generator set. No need for synchronization.

It will reflect during construction design stage.

Layout of Auxiiliary Switchgear in Main Building




COMMENT TYPE

58 General Layout of Electrical Facilities F253C-D06

59 F253C-D07

60 Layout of Switchgear in Coal Handling F253C-D0861 F253C-D0962 F253C-D10

63 F253C-D11

64 F253C-D12

65 DC System Schematic F253C-D1366 UPS System Schematic F253C-D1467 F253C-D15

68 F253C-D16

69 F253C-D1770 F253C-D18

71 Plan Drawing of Cable Routing in the Pl F253C-D1972 F253C-D20

8 I & C

73 I&C Design Description F253C-K01

74 F253C-K0275 F253C-K0376 F253C-K0477 F253C-K0578 Boiler Fuel Oil system P&I Diagram F253C-K0679 Limestone System P&I Diagram F253C-K0780 F253C-K0881 F253C-K09

82 Feed Water System P&I Diagram F253C-K1083 F253C-K1184 Water Supply System P&I Diagram F253C-K1285 F253C-K13

86 F253C-K1487 Compress Air System P&I Diagram F253C-K1588 Fly Ash Handling System P&I Diagram F253C-K1689 F253C-K1790 F253C-K1891 F253C-K19

Layout of Generator Outgoing Cell and Outgoing Line

Layout of Switchgear in Water Treatment Distribution RoomLayout of Switchgear in Ash Handling Distribution Room

Generator-Transformer Protection Schematic

CNEEC should provide differential relay for Generator and Transformer separately. Generator and Transformer Differential relay are used to detect internal faults of the Generator and transformer respectively.

The circuit break between generator and main transformer works only as isolation function. Generator and main transformer will be protected as a generator-transformer unit.

Synchronization Voltage Diagram for Generator

CNEEC should provide a 13.8KV switchgear and synchronizing panel for switching, isolation and synchronizing 15MW Generator, 20MVA transformer and auxilliary transformer.Synchronizing Panel of the 34.5KV switchgear #1 is very far from the control room of the 15MW generator. When tere is fault or damaged on auxilliary transformer then can be isolated from the system.

Accepted. And the Synchronizing function will be done by fast change-over device

Central Control Room and Electronic Equipment Room Electrical Equipment Layout DrawingLayout of Battery Room in Main Building

Exhaust fan should be provided for the battery room. Batteries will emit acidic fumes and will corrode panel parts. Battery room should be provided with exhaust fan

Ventilation has been considered, please see F253C-N03.

Layout of Control Room in Coal Handling HousePlan Drawing of Cable Routing in the Main BuildingStart-Up/Stand-By Transformer Protection Schematic

There are no 220VDC in the DC System.The source from battery is only 52 cells of GFM-400 batteries, as specified in DC System Schematic (F253C-D13)

直流系统是110V，说明已修改。The direct current system is 110V and the specification has been modified.

Central Control Room And Electronic Control Room Lay-out DrawingConfiguration Diagram of Control SystemBoiler Combustion System P&I DiagramBoiler Steam & Water system P&I Diagram

Turbine Steam & Water System P&I DiagramTurbine Lube System and Turbine Proper Instrument System P&I Diagram Closed Cycle Cooling Water System P&I DiagramCirculation Cooling Water System P & I DiagramSewage Water Treatment System P&I Diagram

Bottom Ash Handling System P&I DiagramBoiler Make-up Water Treatment System P&I DiagramBoiler Make-up Water Treatment Dosing and Auxilliary System P&I Diagram




COMMENT TYPE

92 Regenaration System for Boiler Make-u F253C-K2093 F253C-K2194 Cable Routing Drawing in Main Building F253C-K2295 F253C-K2396 Ash Handling Control Room Lay-out Dr F253C-K2497 DCS I/O List F253C-K25

9 Architecture and Structure98 F253C-T0199 ± 0.000 M Plan of TG Building F253C-T02100 7.000 M Plan Drawing of TG Building F253C-T03101 F253C-T04102 Section 1-1 of TG Building F253C-T05103 Elevation View for Steam Side Of TG Bu F253C-T06104 Elevation View for Fixed Side Of TG Bui F253C-T07105 F253C-T08106 F253C-T09107 F253C-T10108 F253C-T11109 F253C-T12110 Layout of Coal Handling Building F253C-T13111 Plan Drawing of Diesel Generator Hous F253C-T14

10 Ventilation and Air Conditioning112 F253C-N01113 F253C-N02114 F253C-N03115 Layout of Dust Collection at Coal Bunke F253C-N04116 F253C-N05

11 Hydraulic117 Hydraulic Part Design Description F253C-S01118 F253C-S02119 Flow Diagram of Water Supply System F253C-S03120 Water Balance Drawing F253C-S04121 F253C-S05122 F253C-S06123 F253C-S07

12 Firefighting 124 Firefighting Design Description F253C-X01125 F253C-X02126 General Layout of Firefighting Facilities F253C-X03

Water and Steam Sampling System P&I DiagramWater Treatment Control Room Lay-out Drawing

Architecture and Structure Design Description

4.000 M,13.000M, 23.000M Plan of TG Building

Plan Drawing of Underground Facilities of TG BuildingPlan Drawing of Fly Ash Handling System Control room and Air Compressor HousePlan Drawing of Chemical Water Treament RoomSection and Elevation of Chemical Water Treatment RoomPlan Drawing of Auxiliary Chemical Equipment Room

Ventilation and Air Conditioning Design DescriptionSection Drawing of Ventilation in Main BuildingPlan Drawing of Ventilation and Air Conditioning in Main BuildingLayout of Ventilation and Air Conditioning in Chemical Water Room

General Layout of Hydraulic Architectural and Structure Building

Layout of Seawater Direct Flow Supply Pipe Flow Diagram of Coal Water Treatment FacilityFlow Diagram of Oily Water Treatment Facility

Flow Diagram of the Main Building Fire Water Piping System

basic design review comments i and c chpi

Documents

effluent water treated

central control rom

direct current system

chemical sampling room

emergency trip pushbuttons

emergency trip button

demineralized water pump

actual air consumption