HSE DOCUMENTS-METHOD STATEMENT FOR DRY-TYPE TRANSFORMER INSTALLATION
1.0. Purpose:
This Method Statement uploaded by HSE Documents covers for dry type Installation of Transformer.
2.0. Scope of Work:
This procedure uploaded by HSE Documents defines the method to be used to ensure that the Installation Transformer Installation is correct and acceptable and shall conform to the specifications.
3.0. References:
3.1. QA/QC
3.2. Project Specifications
3.3. Approved Drawings
3.4. Approved Material Submittal
3.5. Approved Safety Plan.
3.6. Approved Shop Drawings
3.7. QA/QC Installation
3.8. Regulations
4.0. Responsible Personnel on Site:
4.1. Electrical Field Engineers
4.2. Safety Officer
4.3. QA/QC Engineer
4.4. Electrical Superintendent
4.5. Approved HV subcontractor for termination of the incoming cable to the panel
5.0. Safety:
5.1. All safety precautions shall be followed as per the approved safety plan & procedure.
5.2. Ensure all involved persons are aware of the same.
5.3. Safety Officer to ensure that all tools and equipment are suitable and in good condition.
5.4. Ensure that all tradesmen shall leave their working places clean, tidy and free of rubbish.
5.5. All lifting equipment shall be checked for capacity.
5.6. Hot work permit for using electric tools drill, grinder, etc.
6.0. Delivery:
6.1. The approved transformer.
6.2. The transformer is dry type, 11KV/415, 1600 KVA, 3phase, 50 Hz.
6.3. Check for any damages, or scratches on packing before acceptance of delivery.
6.4. Check the KVA capacity, voltage, and country of origin and be sure are
6.5. And by the approved material submittal (IA)
7.0. Storage:
7.1. Use a forklift or mobile crane to off-load transformers. Make sure that the capacity of
7.2. Forklift or mobile crane can carry the weight of the transformer,
7.3. Offloading transformer on tile designated offloading area. Proper care must be observed during offloading to prevent unnecessary damage to the transformer.
7.4. Move the transformer to a dry and clean storage area through the use of the forklift.
7.5. Ensure that the transformer is properly protected and covered by tarpaulin.
7.6. Submit the material delivery form to the consultant for their inspection and approval.
8.0. Pre-Installation:
8.1. All materials and documentation relevant to this particular section of works shall be checked before installation and all the installation shall be as per regularity authority for electricity and water drawings.
8.2. Before any permanent work will be started, inspection of all materials, tools and accessories shall be carried out.
8.3. Cables shall be checked for continuity and insulation resistance and records shall be kept for future reference.
8.4. Ensure that proper access is to execute the works in a suitable condition and free from obstruction.
9.0. Installation Procedure:
9.1. It has been presumed that all related civil works have been completed before transformer installation
9.2. Before the transformer is delivered to the site, check that the transformer railing is fixed as per drawings and complies with the local Electricity Authority
9.3. Move the transformers from the storage area using a forklift and set them in position near the transformer room. Make sure that the orientation of the transformer about the position of cable entries is correct.
9.4. Check the mechanical operation of the off-load tap changer and on-load tap changer through the complete tap range. Verify that the movement is positive.
9.5. Push in the transformer inside its room. Set the transformers on their final positions and make sure that they are properly secured and protected.
9.6. The polarity of the transformer shall be verified.
9.7. Dress and terminate the incoming and outgoing cables on the transformers. Ensure that the cables are supported properly. Cable glands and lugs shall be from an approved manufacturer.
9.8. After termination works have been completed, clean the transformer cable box and ensure that it is free from foreign materials. Ensure that all the connections are
9.9. Properly tight through the use of a torque wrench
9.10. Cover the cable boxes. Bolts and nuts must be tightened properly. Make sure that the transformer room is clean and free from foreign materials.
9.11. The transformer will be connected to a designated earthing pit using the earthing cable.
10.0. Tools
10.1. Electric-powered tools: Drill, grinder.
10.2. Hand tools: Screwdrivers, pliers, wrenches, crowbar and hammer.
10.3. Meters: Earth resistance test meter, insulation test meter, 11KV test meter.
10.4. Mechanical test tools: Torque wrench.
11.0. Inspection:
11.1. A 2 request for inspection shall be raised. One request after the installation of transformers and the second after cable termination.
11.2. Before energizing, as per regularity authority for electricity and water engineer will inspect and test the transformer
12.0. Attachments:
12.1. Risk assessment
12.2. Checklist
12.3. PTW
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