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| METHOD STATEMENT FOR POWER CABLE INSTALLATION |
Table of Contents
1.0. Purpose
2.0. Scope of Work
3.0. References
4.0. Responsible Personnel on Site
5.0. Safety
6.0. Storage
7.0. Pre-Installation
8.0. Tools
9.0. Installation Procedure:
10.0. Inspection
11.0. Attachment
1.0. Purpose
This Method Statement covers installations of Low Voltage and Medium Voltage Power Cables on Cable Trays, Ladders, and direct or buried cables.
2.0. Scope of Work
This procedure defines the method to be used to ensure that low-voltage and medium-voltage cable installations are correct and acceptable and conform to the specifications.
3.0. References
3.1. QCS
3.2. Project Specifications
3.3. Approved Shop Drawings
3.4. Approved Material Submittals
3.5. Approved Safety Plan.
4.0. Responsible Personnel on Site
4.1. Electrical Field Engineers
4.2. Safety Officer
4.3. QA/QC Engineer
4.4. Electrical Supervisors.
5.0. Safety
5.1. All safety precautions shall be followed as per the approved safety plan & procedure. Ensure all involved persons are aware of the same.
5.2. Safety Officer to ensure that all working platforms are safe and in good condition.
5.3. Ensure that all tradesmen leave their working places clean, tidy, and free of rubbish.
6.0. Storage
6.1. Unload the Cable drums in the designated unloading areas.
6.2. Power Cables shall be stored in dry and clean areas.
6.3. Power Cables shall be protected from sunlight by covering them with tarpaulin.
6.4. Power Cables shall be located in designated stock areas and ensure that they are properly arranged and that every cable drum is easily accessible.
6.5. The type, size, and length of the cable shall be indicated on the Cable Drum.
7.0. Pre-Installation
7.1. All materials and documentation relevant to this particular section of work shall be checked before installation.
7.2. Ensure that proper tools to carry out the work shall be on the site.
7.3. Ensure that proper access to execute the works is in a suitable condition and free from obstruction.
7.4. Cables shall be checked for continuity and insulation resistance and records shall be kept for future reference.
7.5. After checking and testing of cables, the damaged cables shall be brought out and shall not be installed.
8.0. Tools
8.1. Cable Trolley
8.2. Cable Rollers
8.3. Crimping Tools
8.4. Hydraulic Cutter
9.0. Installation Procedure
9.1. Cables laid in Cable Trays:
9.1.1. Check the cable tray routes, and ensure that it is completed and stones or foreign materials are inside the cable trays.
9.1.2. The Cable Tray shall be of sufficient width to take all Cables without crowding and allow for possible future additions to the proportions of 25% of the present requirements.
9.1.3. 3 Set the Cable Roller on the cable trays. Cable rollers shall be at a 4m distance to facilitate cable pulling. Curve cable rollers shall be set at the proper position to keep the cables within the Rollers.
9.1.4. Set the Cable drum on the cable drum jack. The drum setting position shall be carefully determined so that the power cables can be pulled smoothly without being kinky.
9.1.5. Fit temporary cable tags on the cables. The tag must indicate the cable number and destination.
9.1.6. Pull the power cable on the cable trays and ladders. Ensure that the maximum pulling tension of the cables as recommended by the cable manufacturer shall be adhered to. The minimum bending radius of the cables, as specified by the manufacturers as per Kahramaa Regulations and Project Specifications, shall be taken care of.
9.1.7. Remove the power cables from the cable rollers and set them properly on the cable trays or ladders. Secure the cables using approved cable ties. Make sure that the cables are securely fastened.
9.1.8. A separation of 25mm will be maintained between cables throughout the installation.
9.1.9. Test the insulation of all cables, both between the cores and between the cores and the earth, during installation with a 500-volt insulation tester (Megger test).
9.1.10. Install cables to allow any one cable to be subsequently removed without disturbing the remainder.
9.1.11. Fit permanent Cable Tags on both sides of Cables showing their related circuit numbers as per the approved single-line diagram.
9.2. Cable Installation in Duct Banks:
9.2.1. Clean the Cable Ducts. Make sure that the ducts are free from stones and foreign materials.
9.2.2. Set the Cable drum on the cable trolley. Ensure that the drum is set in a good position so that the cables can be smoothly pulled.
9.2.3. Fix temporary cable tags on the cables. The tags shall indicate cable numbers and designations.
9.2.4. Pull the cable on the cable ducts. Make sure that the cables are pulled by the pulling tension as recommended by the cable manufacturer.
10.0. Inspection
After the installation of power cables in a certain area, a request for inspection shall be raised for the consultant's approval.
11.0. Attachment
11.1. Risk Assessment
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