mst-pl-02 domestic water supply piping.docx

ABU DHABI FUTURE SCHOOL PROGRAM – Phase (2)PACKAGE – 4

KG SCHOOLS AT Al BAHYA & AL FALAH

Method Statement for Installation of Domestic Water Supply Pipes & Accessories

ClientAbu Dhabi Education Council

EmployerMusanada

ConsultantDewan

ContractorUnited Engineering Construction

MEP SubcontractorAl Sabbah Electromechanical

Issued on23 April, 2013

Prepared By: Reviewed by Approved by MSRev. Name Date Name Date Name Date No.

0 M. Shahid 23.4.2013 Anas Rabae 23.4.2013ASEM-MST-PL-02

Method Statement for Installation of Domestic Water Supply Piping & Accessories

TABLE OF CONTENTS

1. Purpose2. Scope3. Legislation and Code of Practice4. Reference5. Definitions6. Resources6.1. Equipment6.2. Safety of Equipment’s7. Safety Precautions 7.1. Construction Hazards7.2. Personal Protective Equipment7.3. Safety Training and Emergency procedures 7.4. First Aid8.Detailed Construction Sequence (Methodology)8.1. Procedure9.Construction Program9.1 Housekeeping 9.2 Protection of Executed Works 9.3 Responsibilities 9.4 Records10.Inspection and Testing11.Related Forms12.Attachments

ASEM-MST-PL-02 Rev.1 of 8


1. Purpose

This document describes the methodology of Installation of domestic water supply piping system for Abu Dhabi Future School Program – Phase 2, Package 4 Project, and to ensure that all concerned persons are familiar with the sequence of activities, utilization of resources, and execution of the works in compliance with applicable Safety and Quality Procedures, and Project Documents and Specification.

2. Scope of WorksThis method statement is intended to outline the activities and the methods used for the Installation of domestic water supply piping system. All activities will be carried out in accordance with the contract details and in full compliance to the Contract Specifications and documents. All work within the rights-of-way of the standards and specifications will be done in compliance with requirements issued by authorities.

3. Legislation and Code of Practice

All related codes and standards referenced in the project plumbing specifications volume 3 part E division 22 section 22 12 00.

4. Reference Contract Specifications Approved Drawings

5. DefinitionsClient : Abu Dhabi Education CouncilConsultants : DewanContractor : United Engineering Construction

6. Resources

6.1. Equipment / Tools

DESCRIPTION Tool Box

Drilling Machine

PVC Pipe Cutter

Pipe Chamfering Tool

Pipe Plugs

Measuring Tape

Hack Saw

Spirit Level

Solvent Cement

6.2 Safety of Equipment’sNecessary measures will be taken for the safety of the equipment and any other works affected by the works subject of this document. Relevant entities which might require protection include any such works in the vicinity of the area of work or on the service access or discharge path.

The construction team will ensure that any such requirements are documented.



7. Health, Safety & the Environment

7.1 Construction Hazards (tick as appropriate)

Corrosive OxidizingHighly

flammableExtremely flammable

Toxic Highly Toxic Irritating Harmful

Explosive Danger for the Environment

Constrained Space

Slippery Surface

Danger of Electrocution

Falling from Height

Other

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____________________

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The hazards identified above will be controlled under the overall Project Safety Plan which is a separate document communicated to all parties on the project.

7.2. Personal Protective Equipment (tick as appropriate)

The works subject of this document requires that the following PPE be used:

Safety Precaution

Helmet Hi-VizEye

ProtectionFace

ProtectionMask

RequiredRespirator Required

Ear Protection

Gloves

RequiredSafety Shoes

RequiredProtective Clothing

Safety Harness

Equipment Guards

Lifejacket Other

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7.3. Safety Training and Emergency proceduresBefore commencing any works, all employees will attend a site safety induction training to ensure all safety measures are understood and implemented and to cover specific procedures in case of emergency. If necessary, practical training exercises will be conducted on escape routes, signage, evacuation and rescue.



7.4. First AidPrior to the commencement of work, arrangements will be made for medical facilities and medical personnel to be available from prompt attention to the injured person. The contractor’s vehicle assigned to the job site will be used for transporting the injured person to the first aid station and to the nearest hospital when required.

Name of On-Site First Aider/s:

First Aid Box Location:

Location of Nearest Hospital:

First Aid and Medical Supplies available at site:

Potable Water Ice Cubes

10x6cm Sterile Gauze Pad 4x6cm Gauze Roller Bandage

10x10cm Sterile Gauze Pad 8x10cm Gauze Roller Bandage

Large Sterile Gauze Pad 10x12cm Gauze Roller Bandage

Burn Dressings 5cm Elastic Bandage

7.5cm Elastic Bandage 10cm Elastic Bandage

Triangular Bandage Barrier Device for CPR

Adhesive Skin Tape Adhesive Leucoplast Tape

Emergency Blanket Safety Pins

First Aid Scissors Tweezers

Disposable Gloves Instant Cold PackNon-prescription Medicines (Aspirin, Ibuprofen, Acetaminophen) First Aid and Burn Spray, Deep Heat Spray

8. Detailed Construction Sequence (Methodology)

8.1. Procedure

8.1.1 General Requirements

All the materials received at site will be inspected, upon receipt.

Any discrepancies, damages, etc, should be notified and report to the supplier for further action.

Materials found not suitable for site use will be removed from site immediately.

All construction/inspection/testing works shall be carried out in accordance with specifications. Work

shall be carried out by the site plumbing staff under the guidance of plumbing Engineer and shall further

be checked and approved by QA/QC Engineer.

8.2.2 Handling

5.2.2.1 Handling during Transportation

During transportation, loading & unloading pipes must be handled with care. Do not drop or drag pipes

especially on hard surfaces. This is particularly important where the pipe ends have been pre-prepared



in the form of spigots (e.g. chamfered ends) and integral sockets. Wherever possible the loading and

unloading of pipes to be carried out manually by hand, when mechanical lifting equipment is to be used,

no metallic slings, hooks or chains should used in direct contact with the pipe. Ropes or web slings are

preferred, as they will not damage the pipe wall.

8.2.3 Storage

8.2.3.1 Storage on Site

PPR, UPVC Pipes should be stored on a flat dry level surface free from sharp projections, stones or other

objects likely to cause point loading or pipe deformation. Timber supports spaced 1.5m apart along the

pipe can be used to support the pipes. The width of the stack should not exceed 3m.

Pipes of different sizes should be stacked separately or where this is not possible, hose with larger

diameters and/or thicker walls should be placed at the bottom of the stack. The height of the stack

should never exceed 7 layers or maximum 2m high. If prolonged storage is needed (more than one

month) or where the temperature exceeds 23oC then the stack should not exceed 4 layers or maximum

1m high.

All pipes and fittings should be properly covered with tarpaulins to protect them from UV rays. The

tarpaulins are to be fixed to the wooden supports, which allow a free passage of air around the pipes.

Fittings will be stored in sheltered conditions in the boxes as supplied to protect them from weathering

and accidental damage.

8.2.4 Installation

8.2.4.1 General Installation Instructions

a. Ensure that the mating areas of spigot and socket are thoroughly clean and square.

b. Install pipes with the appropriate hangers and clamps at every 1 meter of possible distance.

c. Set the pipes joints properly and use solvent cement for jointing. Accurate axial alignment of the spigot prior to

joining is important. Complete the joint by applying leverage to the following socket and using a timber block

to prevent damage.

8.2.5 Sequence of Installation

a. Mark routing of pipe work according to approved shop drawing.

b. Install piping as per approved shop drawing.

c. Install fittings for changes in direction and branch connections with appropriate branches, bends and

long sweep bends.

d. Use the proper size of standard increasers and reducers if pipes of different sizes are connected.

e. Install all the accessories as per manufacturer requirements, specifications and approved shop drawings.

5.4.3 Jointing the Pipe work



a. Measure length of pipe required, making due allowance for any pipe fittings to be used. Cut the pipe to

the measured length. Ensure that the ends are cut square and clean all burs.

b. The spigot and socket to be jointed should be carefully examined for any damage which could impair

the jointing procedure.

c. The spigot insertion depth should be measured as the depth from the mouth to the shoulder of the

socket.

d. The mating areas of the spigot and the socket should be thoroughly cleaned using the pipe cleaner and a

clean rag.

e. Using a brush apply an even layer solvent cement to the spigot and socket mating surfaces. The cement

should be applied in a lengthwise direction and not with a circular motion. The cement should be

applied simultaneously to the spigot and socket by two persons.

f. Immediately following cement application ensure that the pipe is suitably anchored, and push the spigot

home in the socket without turning the pipe. The spigot should be inserted with a steady, continuous

motion and held in place for 20 seconds. Remove the surface cement from around the mouth of the

socket.

g. Leave the joint undisturbed for five minutes and then handle with reasonable care.

h. Plug all open ends of the pipe work.

9. Construction Program

As per main program

9.1 HousekeepingThe work area shall be maintained neat and tidy as reasonably practical at all times.

9.2 Protection of Executed WorksExecuted works in areas were other works are still being carried out shall be protected as per the contract requirements.

9.3 Responsibilities

PositionOverall Resp. Supervise Perform Short Description

Project Manager Construction Manager Project Engineer Site Manager Site Engineer Land Surveyor Safety Engineer QA/QC Engineer MEP Coordinator General Foreman Foreman



Charge hand Labourer Helper

9.4 RecordsIn accordance with the Quality Management System, the following records will be maintained as documentary evidence of the establishment of this method statement:

Records to be retained Responsibility Minimum Retention Period

Disposition

Work Notification( If required)

Site Manager As per Contract Requirements

Request for Inspection( RIW )

QA/QC Engineer As per Contract Requirements

10. Inspection and Testing

In Process works shall be monitored for quality of workmanship and installation against approved shop drawings by the relevant supervisor.

All works shall be inspected for conformance to specification. The inspection formats shall be used in accordance with the requirements of the main contractor UNEC. An inspection request for the drainage piping shall be submitted one day prior to the consultant.

11. Related Forms

As per required forms, from main contractor

12. Attachments

Risk Assessment


mst-pl-02 domestic water supply piping.docx

Documents

construction hazards

applicable safety

safety training

safety precautions

construction program9

construction team

overall project safety

project documents