cfa piling - islington

J . M . P i l i n g C o . L i m i t e d

Document Number : POH0001/MST/00636 of 33CFA Piling

CLIENT Telford Homes

CONTRACT TITLE 351 Caledonian Road, London, N1 1DU

CONTRACT NUMBER TBC

DIVISION / REGION J.M. Piling Co. Limited

METHOD STATEMENT

CFA Piling

ISSUE CONTROL

This document remains the property of the Murphy Group. The holder shall be responsible for complying with the instructions that accompany revisions. The Design Manager or his / her nominee shall only issue revisions. Amendments shall be identified by the revision number and a vertical line in the margin.

SIGN

PRINT Patrick Gilhooley Kieran Herbert

PREPARED BY REVEIWED BY APPROVED BY APPROVED BY CLIENT

(IF APPLICABLE)

00 First issue

REV DATE STATUS / DESCRIPTION OF CHANGES

DOCUMENT NO. POH0001/MST/00636



CONTROLLED COPY DISTRIBUTION LIST

CONTROLLED COPY NO.

JOB TITLE / NAME

01 Telford Homes

02 Safety Advisor, Kevin Budge

03 Site / Project Manager, Des Hanrahan

04 Piling Foreman, tbc

05 Subcontractor(s), tbc



CONTENTS

1.0 Introduction – Scope of Works ................................................................................................ 5

2.0 Reference Documents .............................................................................................................. 5

3.0 Pre-commencement Requirements ......................................................................................... 5

3.1. Geology .................................................................................................................................. 5

3.2. Existing Services .................................................................................................................. 5

3.3. Working Platform .................................................................................................................. 5

3.4. Access .................................................................................................................................... 6

3.5. Setting-Out of Piles ............................................................................................................... 6

4.0 Resources .................................................................................................................................. 6

4.1. Materials ................................................................................................................................. 6

4.2. Plant ........................................................................................................................................ 7

4.3. Labour .................................................................................................................................... 8

5.0 Methodology .............................................................................................................................. 9

5.1. Description of the Works ...................................................................................................... 9

5.2. Location Plan ....................................................................................................................... 15

5.3. Pile Schedule ....................................................................................................................... 15

5.4. Reinforcement ..................................................................................................................... 15

5.5. Testing Regime.................................................................................................................... 15

6.0 Programme .............................................................................................................................. 16

7.0 Quality ...................................................................................................................................... 16

7.1. Safety Management System ............................................................................................... 16

7.2. Monitoring and Review ....................................................................................................... 16

8.0 Health and Safety .................................................................................................................... 17

8.1. Induction .............................................................................................................................. 17

8.2. Daily Inspections ................................................................................................................. 17

8.3. PPE ....................................................................................................................................... 17

8.4. Records ................................................................................................................................ 17

8.5. Fire Extinguishers / First Aid ............................................................................................. 18

8.6. Risk Assessment ................................................................................................................ 18

8.7. Security ................................................................................................................................ 18

8.8. Welfare Facilities ................................................................................................................. 18

8.9. Emergency Call-out ............................................................................................................ 18

9.0 Environment ............................................................................................................................ 18



APPENDICES / ASSOCIATED RISK ASSESSMENTS

A. Risk Assessments

B. Pile Record and Checklist Sheet

C. Pile Rig Details

D. Lift Plan

E. Working Platform Certificate [FPS/WPC/4]

F. Permit to Dig

G. Multi Site Environmental Impacts Checklist

H. COSHH Assessments

[Control of Substances Hazardous to Health]

I. Insurances

J. Group Health, Safety and Welfare Policy Statement

K. Group Health, Safety, Quality and Environmental Policy Statement

L. ISO 9001:2008, BS OHSAS 18001:2007 & BS OHSAS 18001:2007 [Quality Management System Certificate]ISO 14001:2004 [Environmental Management System Certificate], BS OHSAS 18001:2007 [Occupational Health & Safety Management System Certificate]

M. CHAS Certificate [Contractors Health and Safety]



1.0 Introduction – Scope of Works The proposed work is the construction of contiguous wall & bearing piles in accordance with the Contract Specification and Drawings to form the proposed structure. The piles are to be constructed using the CFA Piling Technique.

2.0 Reference Documents

1. Site Investigation: RSK, Geotechnical and Geo-Environmental Site Assessment,

Project No. 26516-R01 (00) AND Herts & Essex Site Investigations, Ref: CSG/11885.

2. Drawings: - TBC

3. Specification:- SPERW 4. JMP Design Calculations 5. Roger Stagg Calculations 6. Institute of Civil Engineers Specification for Piling and Embedded Retaining Wall

(SPERW) – Second Edition 7. Working Platforms for tracked plant: good practice guide to the design, installation,

maintenance and repair of ground-supported working platforms – BRE 2004

8. LOLER – lifting operations and lifting equipment regulations 1998 9. PUWER – provision and use of work equipment regulations 1998

3.0 Pre-commencement Requirements 3.1. Geology

The Piling Director will have satisfied himself prior to the commencement of the contract with regards to the geology of the site and any effects it may have on the Works. The Principal Contractor has provided a Soil Investigation Report, carried out by RSK, Geotechnical and Geo-Environmental Site Assessment, Project No. 26516-R01 (00) AND Herts & Essex Site Investigations, Ref: CSG/11885.

3.2. Existing Services The Principal Contractor will carry out any inspections for existing services and probe for existing sub-structures. These areas are to be removed or clearly marked prior to any Piling Works. A 5m exclusion zone will be maintained around the Piling Rig in operation and around recently cast Piles.

3.3. Working Platform 3.3.1. The Principal Contractor will provide the Piling Crew with a firm and level hard

standing Working Platform as specified, based upon the BRE load cases provided by JMP for the Rig to be used.

3.3.2. Attention needs to be given to the edges of Working Platforms: determine how near the edge of the platform plant can be permitted while avoiding instability.



A minimum distance of half the machine width is usually required. Clear marking of the working area is essential.

3.3.3. Sites where there have been cut and fill operations, or where plant is required to operate near slopes or batters, will need to be checked for slope stability with the additional loading of the plant in place. Sloping sites present particular problems for stability, which should be addressed in the design – some plant may not be stable at 1 in 10.

3.3.4. This Working Platform will be maintained throughout the duration of the Piling Works. If obstructions are removed, the mat must be properly reinstated in accordance with the original Piling Mat Design

3.3.5. The Working Platform, including ramps and accesses, is to be used only by plant for which it has been designed.

3.3.6. Any areas that do not form part of the Working Platform must be clearly indicated to the Piling Supervisor.

3.3.7. The working platform certificate provided must be signed off before any commencement of works.

3.3.8. Any parts of the Piling Mat deemed unacceptable by the Piling Foreman or Site manager must be rectified straight away.

3.3.9. The Working Platform level must be provided before any Piling commences.

3.4. Access Access routes onto and off site will be as agreed with the Principal Contractor. The CFA Piling Rig will be transported to site on a low loader capable of carrying the Rig. The Rig will track itself off the low loader and will not be lifted off by means of a crane. If necessary, a wide enough ramp will be constructed to provide a safe access onto site for the Rig and timber boards/spreader plates placed to protect any existing surfaced areas and kerbs, c/o the Principal Contractor.

3.5. Setting-Out of Piles

The qualified Setting-Out Engineer will set out the Pile positions. Telford Homes will carry out the setting out in accordance with the latest Pile layout drawings received. Telford Homes will provide a minimum of 3 co-ordinated stations on site (preferably retro stickers).

4.0 Resources 4.1. Materials

Concrete – UKAS certified Reinforcing Steel – CARES certified COSHH as per assessments in Appendix I



4.2. Plant The following equipment items are envisaged to be used for Piling operations:

All plant and equipment will be certified and maintained to PUWER 98 and where applicable, LOLER 98. All lifting equipment will be certified and maintained to LOLER 98. The following manpower is envisaged to be used for Piling operations:

Manpower Quantity

Foreman/Rig Driver (Certified Rig Operator) 1

Banksman (Certified Banksman / Slinger) 1

Excavator Operator (Telford Homes) 1

Pump Operator 1

Item Quantity

SF-50 CFA Piling Rig 1 Telford Homes Excavator 1 Agitator 1 Concrete trailer pump and equipment 1. Single tool compressor and hose 1 Ready mix concrete wagons As required Hiab delivery wagon As required



4.3. Labour

Title Name Contact Phone Number

Contracts Manager Barry Rice 07831 490 907

Project Manager Des Hanrahan 0752 5403 900

Design Manager Patrick Gilhooley 0773 9437 507

Site

Foreman/Supervisor

TBC TBC

Health & Safety Advisor Kevin Budge 07889 590 625

Murphy Group Health

and Safety Department

020 7692 9612



5.0 Methodology This method statement provides a detailed description on CFA piling.

5.1. Description of the Works

The main risks associated with the Piling operations are:

i. Failure of Piling Rig

ii. Spoil removal during Piling operations

iii. Personnel falling into freshly concreted bores

iv. Collision and crushing by Piling Equipment

v. Lifting and placing reinforcement

vi. Working near railway viaduct.

To overcome these potential risks, the following safety features will be implemented to ensure a safe method of working: - GENERAL Piles will be constructed with a diesel powered track mounted CFA

Piling Rig. WORKING Working hours will be as follows: Monday to Friday 08.00 – 17.00 hrs.

- Workmanship will be consistent throughout the duration of the Piling works. - All JMP crew and subcontractors will be focused on their work throughout the

working day - It is important that all JMP staff take the breaks they are entitled throughout

the day. - The quality of Piles, including steel cages and test cubes, will be to a

consistent high standard and this standard will not drop at any time i.e. end of shift / week / last day before holiday period etc.

ACCESS Access to the Piling area will be as provided by Telford Homes.

Access ramps between working areas to be no greater than 1:10 gradient.

LIGHTING Task lighting as fitted to plant will be provided and maintained by JMP.

General/safety lighting for the access and working area will be provided by Telford Homes if necessary.



RIG Mobilisation – The rig will be mobilised in a designated area where a permit to dig is required before the mobilisation. The Piling equipment will be a diesel powered track mounted CFA Piling rig. The mast of the Piling rig is self-erecting and during mobilisation, is lifted from the travelling horizontal position to the vertical working through a series of rams positioned on the mast and rig body. To install the augers onto the Piling rig, a MEWP will be used to access the drilling head of the Piling rig and the auger flight connections. The banksman will be secured to the MEWP with a safety harness when rig mobilisation is taking place. To position the augers onto the rig, the lead auger will be lifted using the auxiliary winch line and placed into the guide clamps on the front of the machine. The banksman will close the clamps securing the lead auger and remove the auxiliary line. The drilling head will be lowered and the drive hex aligned and coupled up to the lead auger. The auger will then be drilled into the ground by approximately 1m and the drill head then disconnected and raised off the lead auger. With the drilling head raised clear, the first of the 6m augers will be lifted with the auxiliary winch line approximately two-thirds along its length so that when lifted it hangs straight. The auxiliary line will have two sets of chains secured to the auger when lifting into place. The first chain will be a single leg choke chain double wrapped around the second flight on the auger. The second chain will be a 4m choke chain secured to the third flight. This will then be guided by the banksman and lowered onto the lead auger locating the hex couplings. Prior to connecting the couplings and installing the pins, the couplings will be ‘greased’ to ensure there is no issue when connecting the augers. When the bottom coupling is in position, the rig will be guided locating the drive hex into the top of the auger and the guide clamps closed. The banksman will assess the auger connection using the MEWP. When in position, the auger pins will be installed into the bottom coupling and the auxiliary line will be lowered off giving plenty of slack on the line and chain. The auger will then be drilled into the ground with the banksman keeping a close watch on the auxiliary line ensuring that it does not become tangled on the auger (it will wind around the auger) until it is low enough that it can be disconnected from the lifting chain and then unwound. The banksman will also monitor both chains to ensure they remain secured to the auger when lifted into place. The auger will then continue to be drilled into the ground until the top coupling is approximately 1m above ground level. The drilling head will then be raised once more and the process repeated until all three augers are in position.



De-rigging –De-rigging will be carried out in a similar way, the De-rigging will take place in a designated area and the permit to dig will be in place. To remove the augers from the Piling rig a MEWP will be used to access the drilling head of the Piling rig and the auger flight connections. The banksman will be secured to the MEWP with a safety harness when De-rigging is taking place. The couplings are ‘greased’ to ensure there is no issue when disconnecting the augers. The ancillary winch will be connected to the auger being removed. There will be two chains used to secure the augers, one single leg choke chain will be double wrapped around the second flight and a secondary 4m choke chain is put on the third flight should the single leg chain become loose. The banksman will remove the auger pins when the ancillary winch is securely fastened to the auger and when the pins are removed the auger is lifted onto the ground using the ancillary winch. The process is repeated until all auger flights have been removed from the Piling rig. The MEWP will remain on site for the duration of the works, in the event that there is a blockage in the concrete hose, it can be released without delay. Concrete Washout - Before commencement on each day, a ‘grout mix’ of concrete and ‘prime a pump’ will be pumped through the concrete hoses and hollow stem auger of the Piling Rig. This will ensure that the concrete hoses and auger stems are ready for concrete to pump through the hoses / augers without blockage. At the end of each day the concrete hoses and augers are washed out after Piling. This is carried out using a compressor to wash out any concrete remaining in the concrete lines. The compressor is connected to the end of the concrete hose and a pressure (8 bar) is built up to wash and blow out any concrete. The excess concrete is then discharged through the bottom of the hollow stem auger. This is in a controlled manner where blowout bins are positioned at the bottom of the auger stem to contain the discharge. The operatives will be notified when this sequence of events is occurring and no site personnel will be in this area. Equipment and Material Delivery - All construction traffic including the Piling Rig, delivery vehicles and concrete wagons will access the site works using the designated Works Access’s only. On arrival to site all equipment and material deliveries will report to the person in charge prior to off loading. All deliveries will transit through the site with a Banksman present at all times. No keys are to be left in unmanned machines.



Equipment and Material Storage - Equipment and materials will be stored adjacent to the Piling area. At the end of each shift the Rig shall be left in a safe and secure manner.

WORKING PLATFORM Piling Platforms: The piling platform designed by Consulting Engineers is based on the BRE Load cases for the Soilmec piling rig. The platform will be installed by Telford Homes as per the specification designed. The working platform certificate (WPC) will be signed off by the relevant parties – designer and Telford Homes. The working platform certificate shall be issued in conjunction with a Form C. A copy of the completed ‘working platform certificate’ shall be kept on site. The piling platform shall extend 2m beyond the working area. Testing of the working platform will include plate bearing tests on each piling platform. Inspection of the piling matt will be carried out regularly by Telford Homes any anomalies in the piling matt will be addressed immediately by Telford Homes. There will be no excavation of the piling platform where the piling rig is working until the piling rig is finished piling on that platform. Any unsupported pile shafts – where the pile cut off levels are low – will be correctly backfilled following the completion of pile construction so there is no hole left open at the end of each day.

Orientation of the Piling Rig: The piling rig will track straight onto the piling matt facing directly onto the tracks (See below). This will be implemented at all times, the banksman will be in full attendance whilst the piling rig is tracking on site. This will be carried out where the tracks are within the falling radius of the piling rig. The Soilmec Piling rig will track from pile to pile as below.



This will be implemented within the fall radius of the piling rig along railway tracks.

PILING SEQUENCE

The Piling sequence will be generally as per the attached sequencing drawing and programme (Appendix H) or the agreed sequence of Works. Piles shall be constructed in an order and in such a manner that no damage is sustained by previously formed Piles.

PARTY WALL

Telford Homes to have in place a procedure for Piling works adjacent to Party Walls.

PILE BORING

The position of each Pile will be Telford Homes and referenced with the Pile number prior to drilling. The Piling Rig shall be erected at each Pile position and an expendable plug shall be inserted to seal the hollow stem of the auger. Check that the auger set up is within the plan and verticality tolerance. The Pile is bored using a continuous flight auger. Following initial penetration, drilling is paused whilst the auger gates are released. Drilling shall proceed until the design depth is reached or practical refusal of the auger is met, whichever occurs first.

CONCRETING

Concrete of specified mix 40N shall be pumped through the hollow stem and whilst slowly rotating the auger it shall be gradually withdrawn, ensuring adequate auger embedment into the concrete at all times. During the concreting phase, the auger shall be rotated in the direction of boring. Concreting will stop on completion of auger withdrawal. The Rig shall be moved off the Pile position to allow the attendant excavator to remove all the spoil from the top of the Pile and the Banksman to shall locate and clean the concrete at the top of the Pile until clean concrete is visible.



REINFORCEMENT The reinforcement will be delivered in straight lengths of reinforcement bar and helical links and placed in a designated area as agreed with Telford Homes site management team. All reinforcement will be kept off the ground. This steel fixing station will have ‘tressels’ where the reinforcement will be placed as the cages are fixed by the competent steel fixers. The steel fixers will be working under the supervision of JMP and will have the relevant training cards, and will be briefed on this JMP document with sign-off of same. The Banksman will ensure that the reinforcement is placed on the ‘stands’ or ‘tressels’ in a safe manner so the steel fixer can commence cage fabrication. The steel fixer will fix the cages as per the design schedule. The Piling foreman will inspect the cages after fabrication. The cages will be lifted via the attendant excavator and lifting apparatus to a storage area agreed with Telford Homes with a slinger / banksman present. All lifting equipment including chains, slings etc will be fully certified. The lifting procedure will be in accordance with the Lifting Plan. The reinforcement cage shall be inserted centrally into the wet concrete using self-weight or mechanical assistance where necessary. The cage shall be pushed flush with the finished concrete, or to the Pile toe, whichever is the shorter. The cage should always be visible at the head of the Pile. Debonding foam will be placed on the reinforcement cage projection bars if requested and allowed for. JMP cannot be held responsible for debonding foam that slides off the projection bars during the concreting operation. Debonding foam is placed to ease the breaking down of concrete; concrete will still need to be broken down by hand for at least the final 300mm above cut off level without debonding foam (The use of mechanical crunchers may snap off reinforcement projection bars and fracture the Pile shaft). Mushroom caps will be provided and fitted to the top of all protruding reinforcement projection bars. When Piling operations have been completed the process shall be repeated at the next Pile position. An exclusion zone must be maintained around recently cast Piles for safety reasons.

Once the Piles have been trimmed to cut-off level, integrity testing may be undertaken.

Throughout the Pile construction process, the appropriate construction and inspection records and activities will be maintained in accordance with the Safety Management System, Works Procedures and the Specification.



5.2. Location Plan

Pile Schedule

JM Piling Schedule – Pile Layout

5.3. Reinforcement As detailed in JMP Pile design calculations.

5.4. Testing Regime

One set of 4no. Concrete cubes will be made per day for each Piling Rig by JMP. The Principal Contractor will supply an 110V outlet for the concrete curing tank; failure to do so may result in low cube strength results.

Holliday Concrete Testing Ltd will perform the testing of concrete cubes and hold UKAS testing accreditation.

Pile Integrity Testing - All Piles will be integrity tested after completion accept Contig wall piles. No Pile integrity testing shall take place under 5 days from the time of cast, and may only be performed after the Pile has been satisfactorily trimmed for testing purposes. The trimming is required to remove surface latency from the Pile and should result in minimum damage to the piles. Telford Homes is to arrange the integrity testing through JM Piling (Kathy Mahony 020 7692 9565), giving at least 48 hours notice.



6.0 Programme

The work will proceed generally in accordance with the Telford Homes Programme.

7.0 Quality 7.1. Safety Management System

The works shall be carried out compliant with the Safety Management System (SMS). The SMS is a documented set of policies, and procedures which when implemented satisfactorily will enhance safety performance thus leading to higher efficiency and fewer accidents. The Safety Management System describes how the Group Safety Structure works and is therefore a key to the success of the business. The Safety Management System (SMS) is certified to the Occupational Health and Safety Management System Specification OHSAS 18001:2007, which has been developed to be compatible with ISO 9001:2008 Quality, and ISO 14001:2004 Environmental management system standards, in order to facilitate the integration of Safety, Quality and Environmental management systems. Parts of the Murphy Group Safety System also include Environmental and/or Quality Management System requirements, and are therefore already ‘integrated’. The Murphy Group is fully committed to supporting Industry and Client led Health, Safety and Welfare programmes wherever they are established. The Group Safety Management System will wherever possible, reflect those Health, Safety and Welfare programmes. The Board of Directors give their full support to the Safety Management System (SMS) as it regards the Health and Safety of all people employed by the Group and anybody else who may be affected by our activities, as being of paramount importance. The SMS is defined in full in: MOH0002-MAN-00001 Group Safety Manual

7.2. Monitoring and Review The responsibility for co-ordinating and implementing this Method Statement is that of the Piling Project Manager, with the supporting supervisory personnel at the activities monitoring the ongoing Piling processes and reflecting any changes required throughout the contract duration. The Piling foreman and operatives will be briefed by the Piling Project Manager prior to commencement of works. Any non-conforming items identified during the contract period shall be addressed as appropriate by non-conformance reports. Where corrective actions are necessary, the Piling Project Manager shall be notified to ensure timely completion of the contract stages to the agreed schedule.



8.0 Health and Safety

8.1. Induction All labour will attend a Site Induction prior to work on the project. JMP will also hold internal inductions prior to work commencing. When particular methods of working or additional hazards are identified for particular locations additional inductions or Toolbox Talks will be held prior to work commencing.

8.2. Daily Inspections The nominated Site Supervisor shall complete checklists and working documents, which shall be checked by the Piling Project Manager for their completeness and accuracy. These are: -

Daily Rig Inspections Daily Plant and Machinery Inspections Daily Lifting Equipment Inspections

8.3. PPE

Correct types of Murphy branded PPE for all Murphy site employees shall be provided and worn as required, they include:

Hard hats, mandatory Hi-visibility vests, mandatory Safety Footwear, mandatory Safety Glasses, mandatory Gloves, mandatory/appropriate to the task Hearing protection Any other PPE deemed applicable to the works

When changing auger teeth, inserting auger, pins into auger head & saw cutting heavy duty glasses will be worn. The operatives will have all of this PPE provided for them by JM Piling and each operative will be responsible for their own particular PPE.

Additional items of PPE may be required for specific operations. Those items will be identified and a briefing given as required. All PPE will to be fit for purpose. Correct issue and use of PPE for steel fixers is the responsibility of the sub-contracted company but will be monitored by JMP.

8.4. Records A copy of this Method Statement will be retained on site for inspection and will be briefed to all site personnel, by the Piling Project Manager. A record of all briefings will be kept on site in the Safety File.



8.5. Fire Extinguishers / First Aid Fire extinguishers will be located in the Piling Rig and first aid kits located in the Site Cabin.

8.6. Risk Assessment

A specific risk assessment for the Piling works is detailed in Appendix B. 8.7. Security

Security arrangements will be drawn up in conjunction with Telford Homes.

8.8. Welfare Facilities Welfare facilities at the work will be provided by Telford Homes.

8.9. Emergency Call-out Communication and emergency plans will be drawn up in line with Telford Homes. In the event of an emergency, the Site Manager will be informed immediately, followed by the Murphy Group Health & Safety Department on 020 7692 9612.

First aiders – First aider by Telford Homes Emergency Contact for Environment Agency (0800) 80 70 60

Telford Homes Site Environmental Manager – TBC

If talking to the Emergency Services the site is at: 351 Caledonian Rd,

London N1 1DU.

Nearest Hospital with Casualty Department – University College Hospital, 235 Euston Road, London, NW1 2BU.

9.0 Environment

Skips, water bowser and licensed carriers will be provided by Telford Homes.

Piling operations should take place only within specified working hours

General waste shall be deposited into designated skips

Hazardous waste, such as oil contaminated materials, used spill kits etc. shall be disposed of by a licensed carrier

All vehicles shall not be run unnecessarily

Engines shall be turned off when not in use

Fuel / oil spills shall be prevented



Drip trays and emergency spill kits shall be used to catch and clean the spills / leaks

Concrete trucks will be washed out into a plastic lined concrete washout area

which will be replaced as required or emptied when 75% full by Telford Homes. The location of these concrete washout areas will be advised at a later date.

Wheel washing of vehicles will be carried out by Telford Homes.

The Divisional Environmental Plan and Group Environmental Procedure –

Incidents and Non-conformances are in place to deal with any environmental incidents and non-conformances.



APPENDICES



a. Risk Assessments



b. Pile Record and Checklist Sheet



c. Pile Rig Details



d. Lift Plan



e. Working Platform Certificate [FPS/WPC/4]



f. Permit to Dig



g. Multi Site Environmental Impacts Checklist



h. COSHH Assessments [Control of Substances Hazardous to Health]



i. Insurances



j. Group Health, Safety and Welfare Policy Statement



k. Group Health, Safety, Quality and Environmental Policy Statement



l. ISO 9001:2008, ISO 14001:2004 & BS OHSAS 18001:2007 [Quality Management System Certificate] [Environmental Management System Certificate] [Occupational Health & Safety Management System Certificate]



m. CHAS Certificate

[Contractors Health and Safety]