BIỆN PHÁP THI CÔNG AHU PAU

MOS, Biện pháp thi công AHU, Method of Statement of AHU, Cách thi công AHU trong toàn nhà cao tầng, AHU trong các nhà máy, cao ốc văn phòng, Trung tâm thương mại, Cách thi công lắp đặt AHU trong các công trình lớn

-METHOD STATEMENT FOR AHU & PAU INSTALLATION

Submission Ref :PSC-HK-MS-M-009

NAME: Hong Soon

Date: 23-April-15

Revision: Rev-00

-Table of Contents 1 INTRODUCTION .3

1.1 Purpose .3

1.2 Scope .3

1.3 Exclusions .3

2 GENERAL 3

2.1 Program 3

2.2 Location - Address 3

2.3 Approvals 3

2.4 Labor resources 4

2.5 Communications .4

2.6 Site Resources Required 4

2.7 Temporary material 4

2.8 Protection 4

2.9 Equipment/Tools 5

2.10 Hot works 6

2.11 Confined space works 6

2.12 Emergency & Safety Equipment 6

2.13 Materials required for installation 8

2.14 Schedule of drawings 8

2.15 Schedule of inspection 8

2.16 Attendees 8

2.17 Safety Briefing 8

2.18 Mitigation of Risk 9

3 Actual Works Method Statement 10

3.1 Delivery and Store 10

3.2 AHU & PAU installation methodology 10

3.3 Setting to work 17

3.4 Testing 17

3.5 T&C Register 19

3.6 Reports 19

4 Appendix 20

4.1 Instrument catalogue and manual book 20

1.1 Purpose

-The purpose of this Method statement is to bring the requirements from the technical specifications, drawingstogether in one convenient document for reference by the drafters, factory, site installers, QA/QC and all parties whoare concerned with the project And this methodology to be followed for the installation of AHU & PAU

2.1.1 Ensure that the shop drawing used for the references at site is approved for construction

2.1.2 Ensure that designated manpower to conduct works at site must be properly trained and well oriented by thesafety engineer

2.1.3 All equipments, tools and mobile scaffolding to be used must be inspected and approved by authorized safetyengineer at site

2.1.4 All staffs associated with the works shall be sufficiently experienced

2.1.5 When the workers climb up the working platform, ladder, his hands must be free

2.1.6 All materials to be used at site must be properly secured and clean

2.1.7 Working period to base on civil work and AHU & PAU installation schedule which will be attached aftergetting approval (Waiting for approval)

2.2 LOCATION – ADDRESS

Application for Basement and all high floors

2.3 APPROVALS

Materials of submission (Waiting for submission & approval)

Shop drawing (Waiting for submission & approval)

2.4 LABOUR RESOURCES

-The AHU & PAU team will coordinate and carry out as below organization chart

2.5 Communications

Office mobile phone or walkie-talkie will be used during working time

2.6 SITE RESOURCES REQUIRED

Temporary fire protection equipment

Site electric panel should be needed as site condition

2.9 EQUIPMENT/TOOLS

-Ensure the availability of equipment and tools provision for AHU & PAU installation works as follows:

1 Tape measure

3 Silver ink marker pen 4 Level measure

cones

2.10 HOT WORKS

7 Chain block 8 Spring isolator inside AHU & PAU

2.14 SCHEDULE OF DRAWINGS

2.15 SCHEDULE OF INSPECTION/T&C FORM

Refer to ITP form as the attached file in below

2.16 ATTENDEES

2.16.1 Sub-contractor manager

2.16.2 Sub-contractor site manager

2.16.3 Main contractor MEP coordinator

2.16.4 Main contractor mechanical engineer

2.16.5 HKL M&E manager

2.17 SAFETY BRIEFING

2.17.1 Safety shall be in first priority during construction, safety staff shall be present on site all the time tosupervise and to remind workers to observe safety requirement Stop work order shall enforce once its dose not meetthe safety requirements

2.17.2 Safety shall conform strictly observed All workers and staff on site shall be oriented of safety requirements.All safety equipment such as cloths , shoes, helmet , gloves , safety belt should provide and regularly checked duringconstruction

2.17.3 The engineer shall inspect all subcontractor tools prior to be used on site

2.17.4 Safety Supervisor shall be present for all the safety site inspection

2.17.5 For the safety of worker, grounding wire for the electric ARC process must be provided and wet cloths,protective glasses, long sleeve cloth must be imposed to worker

2.17.6 Fire extinguisher shall be provided at welding area and safety provision must done to ensure usageworkability

2.17.7 Safety working with Scaffolding

2.17.7-1 All scaffolds must be erected under the supervision of a competent and experienced person- usually theconstruction superintendent This includes moving scaffolds from one position to another Each leg of a scaffoldmust be supported by and adequate footing Loose bards, bricks and other material do not provide a safe, adequatebase

2.17.8 Safety working with Mobile Scaffold

2.17.9 Mobile scaffolds have restricted reach unless a guy wire secures them They are more susceptible tooverturning and require a smooth, level working surface A complete guardrail system must be used at elevationsabove 10 feet and shall be used at all working levels Scaffold should be moved when unoccupied and only bypushing from the base Wheel brakes must be set when scaffold is in use

2.18 MITIGATION OF RISK

Impact damage during pouring of concrete installation to be monitored constancy white concrete is poured Correctconnections or materials, ensure the final installation and connections are inspected and signed off withphotographic records by MEP coordinator on site M&E staff from contractor, architect and client

-3 ACTUAL WORKS METHOD STATEMENT

3.1 Delivery and store

Materials arrived to site shall be inspected and stored according to manufacturer recommendations Materials shall

be stored in the covered and dry space During the receiving materials of AHU & PAU, manpower shall be used tomake AHU & PAU The AHU & PAU and accessories shall be protected and covered with polythene sheets beforeinstalling

3.2 AHU & PAU installation methodology

a) Safety officers and traffic control officers to station around the cordoned off areas until the crane andtransporters for AHUs & PAUs arrive

b) The Hoisting Manager must be on hand to supervise the positioning of the traffic control and safetyofficers, and to ensure that adequate numbers of 2-way radios are distributed for communications

e) Inspect AHUs & PAUs Photograph and record any signs of external damages To check, clean AHU &PAU before installing.

f) Location of Liftec hoist at Level 04 - 21

-g) Site logistic plan at Basement B1M1 is shown as below

-h) Site logistic plan at Level 2M is shown as below

i) Site logistic plan at Level 04~19 is shown as below

-l) Site logistic plan at Level 20 is shown as below

m) Site logistic plan at Level 21 is shown as below

-n) Step by step to start installing AHU and PAU as follow

Installation contents Technical requirements Related documents

To mark AHU & PAU location

which need s to install

To move AHU & PAU to

location where needs to install

To install AHU & PAU

To clean and cover AHU & PAU

Conection works (of duct, pipe,

wiring)

To check and adjust AHU

• All connection points of pipe and ductare compatible with approved shopdrawing and equipemnts

• Installation works should be made byteam of workers and engineers haveexperience

• Installation area must be safe

• AHU & PAU conrete bases should beflatted and smooth, correct as shopdrawing dimension

• To install vibration isolators by rubberpads with 20mm thichkness and havegood elasticity

• To ensure enough space to maintain inthe future

• To conduct to balance AHU & PAUbefore starting to comnet to pipe, ductand condensate water pipe

• To let fan’s blade of AHU & PAU rotatefreely to check if fan’s balde have trouble

or interwind

• To make condensate water pipe so thatthe slope of it is meet 1% direct to pipeline

• All welding joints or threaded connectionjoints should be cleaned and painted topreotect

• All wiring joints to be tighted

• Using canvas connector between ductand AHU & PAU for connection Mixingbox must have access door to check,repair and maintain

• All connection points between AHU,

Shop drawing.Equipemntcatalogues

Specificationdocument

-PAU and duct maust use sealant to makeclosed

• Condensate wate pipe must have 1%

slope direct to pipe line

• To make strap for condensate water pipe

• To make inspection to completeinstallation works

o) Cover each AHU & PAU module with protective canvas sheet securely strapped by PVC carton-bandingstraps to secure the sheets to the AHUs & PAUs

p) Repeat the above sequence to the remaining AHUs & PAUs

3.3 Setting to work

-Not applicable

3.4 Testing/Inspection

3.5 T&C Register

-Not applicable

3.6 Reports

-4 APPENDIX

4.1 Instrument catalogue and manual