MS for Ventilation .pdf

7/30/2019 MS for Ventilation .pdf

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Group Five Construction LLC

METHOD STATEMENT

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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

PROJECTNUMBER: NDIA-2201-PRSSB

SUBMITTALREF. No.:

NDIA-2201-PRSSB/G5/MSS/MEP/V

OL/005

Rev No: 01 PROJECT

NAME:Passenger Rail System Station Box

Construction Package No: NDIA-2201-PRSSB

Rev. Date: 14/05/2011

METHOD STATEMENT TITLE:

METHOD STATEMENT FOR INSTALLATION OF DUCT

AND DUCT ACCESSORIES

AMENDMENT RECORDS

Rev. Date Changes Prepared by

ReviewedMEP

Manager

ReviewedLogisticsManager

ReviewedQA/QC

Manager

ReviewedHSE

Manager

ReviewedEng.

Manager

ReviewedProject

Manager

Issuedto

0004

Nov2010

Issued forApproval PP

MACEPM

0114

May2011

Revised asper

Comments

Deepak

CV

MACE

PM


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

CONTENTS

1.0 PURPOSE

2.0 SCOPE OF WORK

3.0 PROJECT ORGANISATION (INCL. HEALTH AND SAFETY CONTROL)

4.0 HEALTH AND SAFETY RISKS AND CONTROLS

5.0 WORKPLACE ACCESS AND EGRESS

6.0 WORKPLACE LIGHTING

7.0 PLANT AND EQUIPMENT

8.0 PERSONNEL TRAINING CERTIFICATION

9.0 HAZARDOUS MATERIALS AND SUBSTANCES

10.0 WASTE MANAGEMENT

11.0 SPECIAL CONTROL MEASURES


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

1. PURPOSE :

This Method Statement aims at ensuring that the installation of Ventilation Duct Work andAccessories for the NDIA Railway Station meets the requirements of ventilation Specification Section230000 and complies with Health and Safety procedures.

REFERENCES :

o Project Specifications Volume II, Part -1, Section: 23000.

o Approved shop drawings (latest revision)

o Duct Work standard DW/144 Spec.

o Duct work Air leakage test Procedure DW-143 .

o Method statement for Air Handling Unit ( MSS-MEP-VOL-004)- (Mace ref: MS-126)

o NDIA Design Basis Documents rev H (25045-x-3dr-x-1000_001) Dated on 08.05. 2006

2. SCOPE OF WORK :

Ventilation Duct Work generally includes all types of Supply Air Duct, Fresh and Exhaust Air Duct

and their accessories such as duct elbows, offsets, transformation pieces, and branch off pieces,

tee connections, access doors, Fire Dampers, Volume Control Dampers and Sound Attenuators.

All the ventilation Ducting and accessories are suitable against corrosion from saline environment.The ducting and accessories will be painted with rubber acrylated anti corrosion paint beforedelivery to the site.

2.1 Pre Installation Procedures :

1. Ensure that approved materials are available to carry out the work.

2. Prior to Commencement of work , areas and access will be inspected to confirm that

Site is ready to commence the work.

3. Check all the Duct work are pre-fabricated with tag number labelled and received at

site in accordance with specifications and correct dimensions as per approved

drawings.

4. All relevant documentation (Drawings) and Material applicable to particular section of

works will be checked by Site Supervisor prior to commencement of work.

5. The Site engineer/ Site Supervisor will give necessary instructions to tradesmen(Duct erectors) and provide necessary approved construction/shop Drawings of

latest revision along with coordinated layouts.

6. The Site Supervisor/Foremen will also check that proper tools and equipment are

available to carry out the work and are in compliance with contract specification.

7. The Site Supervisor also explains the tradesmen regarding safety precautions to


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

be observed.

8. Prior to Leak testing, Site Engineer will ensure that Calibrated test kit is available and in

good condition.

2.2 Installation and Inspection Procedure :

1 Prior to commencement of work, coordination will be done with other services.

2. Determine the position of duct supports as per approved construction drawing,

coordinated layouts and specification.

3. Prepare and fix the duct supports as per approved construction drawing and

specification.

4. Any cut edges of angles, channels or threaded rods will be touched up with Zinc rich

paint.

5. Transport the Duct pieces and fittings to final location.

6. Pre-assemble the Duct pieces and fittings as per approved shop drawing, ensuring

the alignment.

7. Raise the duct work on to the supports ensuring that each length is aligned and

levelled with preceding length as per dimensions shown on approved shop drawings.

8. Approved duct sealant shall be applied on the joints. Any excess sealant shall be

removed so that the joint is left in clean and tidy condition.

9. Ensure that duct work is clean and no tool/construction debris exists within duct work

before proceeding to next length.

10. All open ends of the duct works shall be temporarily sealed with polythene

sheets/plywood before leaving the job site to prevent moisture and dirt.

11. Ensure that all accessories like Volume Control dampers, Fire dampers, Access

doors, Test points, Sensors are installed in accordance with approved shop

drawings.

12. Install Sound Attenuators, Diffuser and Louvers according to approved shop

drawings.

13 Leak test will be carried out for duct work as applicable in DW144 standard.

14. Where duct work passes through fire rated wall/partitions, the gap between sleeve

and duct work shall be filled with approved fire barrier.

15. Bottom of the duct should be maintained as per the levels marked on the drawings.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

16. All the ducts will be lifted by crane though the ventilation shaft opening to PRSSB and

the horizontal movement will be carried by hand pallet track.

17. Only trained workers will erect the scaffoldings and also the scissors lifts operators

are to be trained , only trained work men should operate the scissors lifts.

18. The ducting will be degreased inside and outside from the factory and the corrosive

protection paint will be applied from factory itself before delivery to the site.

19. The Painted duct work should be protected against damage in transit & storage .

Touching up of paint to be done at site after delivery of the material if necessary.

20. Duct work construction and installation should be as per the HVCA DW/144 & 143

2.3. QUALITY CONTROL:

1. QCE along with Project Engineer and Site Engineer will monitor that allcomponents are installed as per contract specifications and approved submittals

and manufacturers recommendations.

2. Duct work Material inspection will be done as per standard QA/QC inspection

procedure. Touching up of the paint should be done at site if necessary

3. Inspection Request (IR) shall be submitted to Main Contractor/Consultant for the

following stages of work:

After completion of installation before leak test

Leak testing of Duct work (as applicable) as per DW 143.

4. An activity specific Quality Control Plan (Inspection and Test Plans ITP) will be

generated in accordance to this Method Statement and relevant Project

Specifications, identifying suitable verification through Hold, Witness, Surveillance

or Review points at appropriate stages of the process.

The ITP will also indicate which records (relevant QC Forms) are to be

generated to demonstrate that product realization has been achieved.

The reference number for the relevant ITP is:

QCP No.: NDIA-2201/ITP/026E

This ITP will be submitted separately and will follow a separate approval process

to that of this Method Statement.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

2.4. SAFETY:

1. Work will commence as per safety regulations laid down in the contract

specification and project safety plan.

2. Proper safety harness to be used and secured as required or as instructed by

safety officer.

3. All personal protective equipment shall be used as appropriate according to thenature of the job.

4. Housekeeping shall be of good standard and all cut pieces and debris shall

be removed.

5. Ensure that all lifting operations are carried out as per approved procedures

and safety regulations.

2.5. LIGHTING:

1. Workplace Lighting - G5 will have in place a temporary lighting system and

ventilation system for other works to take place.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

3.0 PROJECT ORGANIZATION

3.1 Group Five Construction - Organizational Chart


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

3.2 Voltas Ltd. - Organizational Chart

ProjectDirector

Mr. A. Tyler

SecretaryMrs. L.Pineda

Doc. ControlMr. R.

Pontillias

Admin.Manager

Mr. V. Guha

PlanningEng. Mr.S. Haneef

QSMr. J.

McMillan

QA/QC Eng.Mechanical

Mr. R. Juelar

Project Mgr.(Plumb) Mr.D. Suresh

MEP ProjectManager

Mr. P. Vlaicu

QA/QC Eng.Electrical

Mr. R. Addatu

DraughtsmanPlumbing

Mr. M. Karki

HR ManagerMr. R.

Mazumdar

FinanceMr. M.

Deshmukh

ContractsMr. A.Robertson

ProcurementCell

RegionalDirector

Mr. C.D. Pant

PMOMr. I. West

VOLTAS LIMITEDInternational Operations Business GroupPO Box 23458Doha, Qatar

ORGANISATION CHART FOR MEP WORKSPROJECT: NDIA-2201-PRSSB (PASSENGER RAIL SYSTEM STATION BO

DOHA BRANCH OFFICE BASED NDIA SITE BASED

QS Asst.Mr. T.Kumar

Project Eng.(Plumb) Mr.

D. Veettil

Site Superv.Plumbing

Mr. Malkayah

Project Eng.(Ventilat) Mr.P. Thangavelu

DraughtsmanVentilation

Mr. T. Baby

Site Eng.(Ventilat)

TBA

Site Superv.Ventilation

TBA

Seepage WaterDrainage Works

VentilationWorks


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

4.0 HEALTH AND SAFETY RISKS AND CONTROLS

Below is an assessment of the risks involved for the surveying works?

To evaluate risk: Likelihood (L) Severity (S) = Risk (R)Defined as High (11 - 25), Medium (6 - 10) or Low (1 - 5)

Activity/Element

PotentialHazards

Consequence Risk Rating Control Measures Specified

L S R Work duringsummertime.

Heat stress / Heat strokeduringsummer.

Workersovercome byheat problems,sunstrokes etc.

3 3 9 1. All workers to be advised to drink at leaminimum requirement of water per daysolutions are highly recommended durstress periods).

2. Rest hours during peak hot time, seasobreak hours will be implemented.Work at night (ifrequired).

Little light. Injuries due toinadequate/ poorlighting.

3 3 9 1. Provision of adequate lighting.2. In some circumstances, intrinsically sa

be required.

L = Likelihood S = Severity1 Very Unlikely2 Unlikely3 Likely4 Very Likely5 Certain

1 Minor Injury2 Lost Time Injury3 Major Injury4 Single Fatality5 Multiply Fatalities

Assessed by: AC Checked by: PB


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R Energising(connectingAHU controlpanel or powertools to thetemporarypower source).

ElectricalShock.

Burns, injury andelectrocution.

2 2 4 1. Instruction and toolbox talks given on u2. Operatives to be tested for competence

the tools.3. Only double insulated reputable, brand

manufactured tools to be used.4. Conduct weekly tool inspections.5. Functioning ELCB (earth-leakage circu

required on all circuits.6. Ensure supply voltage conforms to ope

(240V single-phase or 415V three-phasite).

Connectingextension leadsfor the powertools used forinstalling theAHUs

ElectricalShock.

Burns, injury andelectrocution.

2 2 4 1. Use only matching colour coded industsockets.

2. Regular checks for polarity and service3. Ensure that electrical equipment/tools

prior to connecting to power supply.4. Ensure 415V and 240V supply circuits

functioning ELCB.5. Protect extension leads against damage6. Conduct relevant toolbox talks.7. Conduct regular inspections.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R Welding (ifany).

Fire. Burns.Damage toproperty.

2 1 2 1. Hot Work Permit (Authority or Client) t2. Welding area to be free of flammable s3. Ensure appropriate housekeeping pract

are followed.4. Accessible fire extinguisher required.

Hot welding (ifany), cutting,grinding, drillingand handling oftools duringinstallation ofAHU andaccessories ortheir supports

Hot work andimproperhandling oftools.

Fire hazard,electric shockand personalinjury.Hit by sharpedges/ flying

objects.

3 4 12 1. Qualified personnel only to be involvedgrinding activities with appropriate PPkeeper to ensure good condition of all equipment before issue to site. Hot perExtinguisher required at working area.

2. Defective/ damaged tools [broken hand

edges, worn out heads, cracked parts emade tools, make shift hand tools shouimmediately & destroyed.

3. Technicians will be reminded regularlybox talks about perils of misusing hannecessity of informing the defects founimmediately.

4. Wear goggles while carrying out Chippor similar operations.

5. Using proper tools for the right jobs toworks. Do not use unsafe defective tooworks.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R Operate anangle grinderfor adjusting thelength ofthreaded rods.

Hot sparksbeing airborne.

Eye injuries.Minor burnwounds to thebody.

3 3 9 1. PPE - Clear face shield visor.2. Eye protection to be worn.

Operate anangle grinderfor installing thesupports forAHU or itsaccessories.

Hot sparksbeing airborne.

Ignition ofcombustiblematerials,resulting indamage andloss of lifethrough a fire.

4 3 12 1. Areas are cleared of combustible materi2. Fire wardens do inspect the areas to en

cleared.3. Site emergency plan deals with fire inc

Cutting andGrinding withabrasivewheels.

Flyingparticles androtatingblade.Sparksgenerated.Disc disinte-gration.

Eye and bodyinjury.Start a fire.

2 1 2 1. Only fit good quality discs/wheels.2. Avoid discs coming into contact with s

when not cutting/grinding.3. Guards to be fitted.4. Eye protection to be worn.5. Keep work area clear of flammable ma

Cutting thesupport with ahand-heldcircular saw.

Flyingparticles.Rotating

blade.

Eye and bodyinjury / cut / amputation.

2 1 2 1. All power electrical tools to be fitted wswitch (trigger disconnecting the powreleased). Trigger switch-lock not to b

2. Inspect tools regularly.3. Guards are to be fitted and eye protect


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R Drilling, cutting,grinding andchipping forProperinstallation ofAHU andAccessories

Dustgeneration.

Lung damageand eye injury.

2 1 2 1. Use of PPE to be enforced and controll2. Operatives are to be issued with dust m

protection.

Drilling, cutting,grinding andchipping forProperinstallation ofAHU and

Accessories

Noisegeneration.

Loss of hearing. 2 1 2 1. Operatives to be issued with eye protectio2. Limit / control the duration of noise ex3. Noise levels to be checked at regular in

especially in confined spaces.

Drilling, cutting,grinding andchipping Properinstallation ofAHU andAccessories

Vibration. Hand / ArmVibrationSyndrome(HAVS).White finger -ReynaudsDisease.

1 1 1 1. Limited exposure duration to vibration.2. Make use of relieve operator and rotate

basis.3. Use of heavy duty gloves is compulsor4. Inspect anti-vibration rubbers on equip

applicable.5. Monitoring of operators by Site Nurse

basis.

Transportation& Storage of

AHU andaccessories .

ImproperTranspor-tation &Storage.

Damage ofmaterials/ workmen/ vehicle.

2 1 2 1. Projections from vehicles will not be pered flag/lamp tied to the projection beh

2. Materials shall be stacked properly & sobstruct the access of others.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R Manual lifting ofAHU andaccessories.

IncorrectManuallifting.

Muscular -skeletal injury.

4 3 12 1. Wherever possible mechanical handlingbe used.

2. Size of load shall be reduced when it iswalk considerable distance in confined

3. Heavy load shall be assessed before lifobtained from other members of the si

Lifting of AHUandaccessoriesand control

panels bycranes or fromvehicles.

ImproperLifting / Loading andoff loading

of tools &materials.

Lifting gear &loads / Workerstruck by Fallingobject.

3 4 12 1. Working area to be barricade with warnsignage.

2. Clearly identify lifting capacity of planLifting plan to be uses/operated by com

3. Check at regular intervals chains, slingwill be certificated and colour coded.

4. Slung loads to be secure and balanced,ropes use hard standing for reception.

5. Keep clear of slung loads; keep hands loads especially at point of landing.

6. Wear suitable PPE.7. Use banks man. Maintain communica

banks man and driver.8. Operatives to police the working area a

of movements of public at all times.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Activity/Element

PotentialHazards


L S R General activity. Improper

general sitework.

Injury andtools/materialsdamage.

3 3 9 1. Attend site safety induction & method sbriefing to be given by G5 Engineer.

2. Comply with site rules and G5 safety p3. Wear high visibility coat/waistcoat and4. Carry out Daily STARRT talks for spe5. Maintain exclusion zone around worki6. Do not permit public to enter site comp

General work. Noisepollution.

Hearingdamage.

3 3 9 1. Noise should be reduced whenever posslow noisy machines & shielding mach

2. Ear protectors must be provided for noabove 85 dbA.

Generaloperation.

Improperoperation ofPlant andequipment.

Plant andequipmentdamage.

3 4 12 1. All plant and equipment to be suitably smaintained by competent fitters.

2. Check all plant certification.3. Inspect equipment at the start of each s4. Secure equipment in compound at the

shift.


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

5.0 WORKPLACE ACCESS AND EGRESS5.1 All employees entering the construction area will do so by making use of the access

provided. Only authorized employees will be allowed to gain access onto the construction

site.

5.2 All employees will attend the NDIA health and safety induction prior to entering the area of

operation. Access permits will only be issued to employees on completion of the induction.

5.3 Employees will be transported to the area of work and then back.

6.0 WORKPLACE LIGHTING

6.1 Installation and commissioning works will be conducted in day light; no work will be

conducted after sunset unless during emergencies.

6.2 Proper lighting shall be provided when working in the night. Sufficient tower lights shall be

operated should it be necessary.

6.3 Working hours will be from 07h00 to 18h00.

7.0 PLANT AND EQUIPMENTThe following plant and equipment shall be used during the plumbing works:

Light torch

Portable lights

Extension leads

Portable generator

Portable drill machine

Portable grinding machine

Powder-actuated gun

Electric cutter

Tap & die set

Hacksaw frame with blade

Combination pliers

Screwdriver set

Spanner set


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G5C.IMS.001 Rev. 05 Dated: 26/11/2010

Marker pen

Measuring tape

Spirit level

Knife with retractable snap-off blade

Vertical hydraulic jack 3 ton

Ladder

Scaffolding set

Fork lift

8.0 PERSONNEL TRAINING CERTIFICATIONCopies of all relevant competency certificates will be kept on file in the G5C site HSE Advisorsoffice. These documents will be made available for inspection on request from MACE Project

Manager.

9.0 HAZARDOUS MATERIALS AND SUBSTANCESMaterials and substances used for the installation of Seepage Water Drainage System are non-toxic and non- hazardous.

10.0 WASTE MANAGEMENT10.1 Waste management will be done as per the procedure set out in the G5C Project Health and

Safety Plan.

11.0 SPECIAL CONTROL MEASURES

11.1 The safety of all personnel and other employees shall always be a high priority during all field

operations conducted on the project.

11.2 All site operatives and staff working for this project shall attend the Main Contractors safety

induction training / seminar prior to working at site.

11.3 The responsible supervisor will conduct a Safety Task Analysis Risk Reduction Talk(STARRT card) prior to start of work daily. The method statement shall also be discussed to

all site operatives before commencing work.

11.4 Contractor is committed to ensure minimal risk for its employees, for the employees of

subcontractors and consultants, and to protect the public exposed to construction operations.


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G5C IMS 001 Rev 05 Dated: 26/11/2010

11.5 At a minimum, each site operative member will be equipped with PPE such as: high visibility

reflective vest, safety shoes, hard hat, safety glasses.

11.6 When any operation becomes hazardous beyond reason due to unforeseen or uncontrollable

circumstances, all affected operations will cease until safe working conditions have been

restored. No operation will be considered as too important or urgent as to compromise the

health and safety of any employee on site.

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