Method statement for conduit installation

TABLE OF CONTENTS

1. PURPOSE
2. SCOPE
3. REFERENCES
4. RESPONSIBILITIES
5. MAJOR PLANT & EQUIPMENT
6. MATERIAL HANDLING
7. CONSTRUCTION METHODOLOGY
8. EQUIPMENT AND TOOLS
9. PARTICULAR SAFETY PRECAUTIONS
10. ATTACHMENT
10.1 Quality Record No.: 003 – Conduit Installation.

1.0 PURPOSE

1.1 To ensure that the conduit system is installed according to specification and codes and is ready for cable installation.

2.0 SCOPE

2.1 This procedure shall apply during the installation of conduit system.

3.0 REFERENCES

3.1 Site Safety Plan
3.2 Project Manuals / Project Specifications
3.3 BS-7671 – Requirements for Electrical Installation (The IEE Wiring Regulations)
3.4 Company- Quality Control Work Procedure
3.5 Company – Electrical Work Procedure
3.6 Company Project Quality Plan
3.7 Approved Installation drawings (As applicable)
3.8 Approved Material Submittal (As applicable)

4.0 RESPONSIBILITIES

4.1 Supervisor / General Foreman

4.1.1 Implementation of safe work method statement and risk assessment plan.
4.1.2 Arrange TBT prior to commencement of work.
4.1.3 Visit the area of work for no hazard items exist.
4.1.4 Organizing the site and work places so as to ensure that work is carried out to the required standard, with minimum risk to men, equipment and materials.
4.1.5 Ensure that the employees under his responsibility do not engage in unsafe work practices or take unnecessary risks.

4.2 Safety Officer

4.2.1 Enforce the Project HSE rules and regulation.
4.2.2 Implement HSE requirements as set out in Company HSE Plan
4.2.3 Ensure work permit has been obtained and implemented if applicable.

4.3 Tradesmen / Drivers / Operators / Welders

4.3.1 Follow Supervisor’s / General Foreman’s instructions.
4.3.2 Only authorized drivers / operators can operate the plants.
4.3.3 Only authorized welders can operate welding plants.

5.0 MAJOR PLANT & EQUIPMENT

5.1 All equipment/tools shall be inspected prior to use at site and Company ID tag shall be placed on equipment where applicable.
5.2 No modified tools may be used for any task.
5.3 All test equipment shall be checked to assure that they are in good condition and valid calibration certificates are maintained and available for review.
5.4 Operator’s documentation shall be verified as applicable.

6.0 MATERIAL HANDLING

6.1 All materials shall be submitted for approval prior to procurement and delivery to site.
6.2 Materials shall be inspected on delivery to site, to ensure compliance with the approved submittal. An Over, Shortage & Damage report shall be completed for all deliveries.
6.3 Materials shall be unloaded in a proper manner, by manual or as necessary, mechanical means, crane or forklift. Materials shall not be dropped to the ground, but lowered carefully.
6.4 Materials will then be reconciled with the mill certificates, where applicable and any uncertified /non-compliant materials will be removed into quarantine.
6.5 Material shall be stored appropriately or placed on shelving within the warehouse area.
6.6 All materials shall be stored on shelves within the warehouse and shall be segregated according to size and type.
6.8 Care shall be taken to prevent the ingress of dirt or foreign objects into materials.
6.9 Insulation materials shall be stored in the manufacturers packing to ensure it is maintained in a clean dry condition.
6.10 Items requiring preservation and maintenance shall be subject to the requirements of the Preservation and Preventative Maintenance Procedure.
6.11 Manufacturer’s instructions with regard to storage requirements shall form the basis for material storage and preservation.

7.0 CONSTRUCTION METHODOLOGY

7.1 QUALITY CONTROL:

7.1.1 The QC Inspector shall ensure all conduits and fittings conform to the applicable Project Specification and Code, Shop Drawings and Purchase Order.
7.1.2 The QC inspector shall ensure that rigid conduit is installed.
7.1.3 The QC inspector shall ensure the rigid conduit with suitable hub, adaptor & bushes is installed for conduit fittings, junction box and panel board.
7.1.4 The QC inspector shall ensure the space requirements from other services are maintained as per project specification and Code requirements.
7.1.5 Exposed conduit runs shall run in parallel or at the right angles with the lines of pipe rack or structural steel and buildings. Conduit routes shall ensure access spaces are not restricted.
7.1.6 All conduits shall be sized to ensure the conductor fill will not exceed the allowable requirements.
7.1.7 The QC inspector shall ensure where conduit install in corrosive area are PVC coated.
7.1.8 The QC inspector shall ensure all stub-ups are of RGS conduit with a suitable PVC adaptor installed for the transition from PVC to RGS.

7.2 CONSTRUCTION ACTIVITIES

7.2.1 All conduits shall be installed as a complete system and shall be securely fastened in place. Conduit shall be supported in accordance with Project Specification and Code. Provide supports where required or as indicated on drawings.
7.2.2 Where conduits are affected by movements of supporting structures, a suitable flexible or expansion joints will be provided.
7.2.3 Conduits shall be cleaned free of burrs and any other sharp edges throughout their entire length.
7.2.4 Junction boxes and pull boxes shall be installed after two (2) 900 bends or after a bend plus a total straight run of 10 meters. All bends shall have a radius not less than that required by Project Specification and Code.
7.2.5 The conduit installation shall be bonded to the earthing system as permitted by Specification (Earthing & Bonding).
7.2.6 RGS conduit will be used for exposed conduit interior of building for services exceeding 400VAC and for homerun feeders to panels, semi exterior areas such as loading areas and within parking garage floor areas.
7.2.7 RGS conduit will be used for fire rated feeders.

8.0 EQUIPMENT & TOOLS

8.1 Threading Machine for Metal conduits
8.2 Bending Machine
8.3 Cutting Tools.

9.0 PARTICULAR SAFETY PRECAUTIONS

The contents of this method statement shall form the basis of a toolbox talk for all operatives before the commencement of such works.

9.1 RISK ASSESSMENT

– Danger of hand or other injuries from cutting tools and sharp edge
– Danger of falls from heights.
– Falls, knocks or trips due to poorly lit areas within the structure.
– Danger of eye damage during cutting or grinding.
– Electrocution when using electric hand tools and extension leads.
– Danger of injury when lifting large duct sections.

9.2 RISK MANAGEMENT

9.2.1 Only trained operatives shall use such cutting tools as required to carry out the works. All operatives, skilled and unskilled shall be provided with gloves for hand protection.
9.2.2 All operatives shall be provided with full body safety harnesses when working at heights above two (2) meters as set out in this method statement.
9.2.3 Main contractor shall provide temporary lighting as required in areas subject to poor lighting.
9.2.4 When cutting or grinding all operatives shall wear a full face visor. All other operatives in the general area of such work shall be made aware and avoid such areas.
9.2.5 All hand tools and extension leads shall be inspected before use to ensure they are in good working order, with no damaged or exposed elements. Leads shall be checked along their full length and plugs and sockets shall be of the correct type and rating.
9.2.6 Where scaffolding is required to be installed for the lightning/earthing installation, a Green Tag shall be attached to the scaffolding to identify that the scaffolding has been inspected and can be used for construction purposes.

10 ATTACHMENT

10.1 Quality Record No.: 003 – Conduit Installation.