Attachment_1_SOW.docx

STATEMENT OF WORK

Nellis AFB Bldg 721, Repair T1 Substation Transformer 23-March-2014

LOCATION: The project site will be located at Nellis AFB.

Nellis Air Force Base (NAFB) is located approximately nine (9) miles north of downtown Las Vegas on Highway US-93 (Las Vegas Blvd). NAFB consists of three main areas: the Main Base, Area II, and Area III. The specific project location is at the Main Base.

DESCRIPTION OF WORK:

The Contractor shall furnish all labor, supervision, materials, tools, equipment, incidental works and professional design as necessary to repair containment seals, contacts, and tap changer heads located within T1 20 MVA, 69KV delta to 12,470v/7,200v wye North American substation transformer.

GENERAL CONDITIONS:

All work that is to be conducted shall comply with all applicable specifications and standards. The contractor shall comply with the guidance included in the following publications: the latest versions of OSHA STALLCUP’S HIGH VOLTAGE AND TELECOMMUNICATIONS REGULATIONS SIMPLIFIED and OSHA ELECTRICAL REGULATIONS SIMPLIFIED and AIR FORCE INSTRUCTION 32-1064, (25 May,2006), ELECTRICAL SAFE PRACTICES. All material that is to be installed must conform and be compatible with the existing manufacturer’s specifications. Contractor shall comply with all pertinent Federal environmental requirements. Apply RCRA (Resource and Recovery Act) standards for handling and disposing of transformer oil. Contractor is responsible for all waste products generated. At no time will the contractor dispose of hazardous material or hazardous waste on base. Waste must be properly contained at all times and removed from Nellis AFB and disposed of properly. Once the system has been de-energized by Nellis AFB personnel it is the contractor’s responsibility to verify transformer isolation and apply personnel safety Lock-Out-Tag-Out (LOTO) devices.

SCOPE OF WORK:

1. Drain oil from T1 transformer located at Nellis AFB substation. The contractor is responsible for storage of the oil.

2. Dehumidify the transformer oil removed to ensure that all the moisture is removed and the oil meets the transformers manufacturers’ specification.

3. Perform internal inspections on the transformer to include oil containment barrier walls, seals, contacts and tap changer components.

4. Clean inside transformer oil tank reservoir.

5. Remove reversing switch, diverters, and other components as required to allow for removal of the tap head assembly.

6. Provide and install three replacement tap head assembly with contacts.

7. Provide seal replacement kit and install all penetration seals for components and barrier wall penetrations.

8. Provide the services of manufacturer’s field engineer to oversee installation and adjustment of all components.

9. Prepare the transformer for re-filling; provide an oil processing rig to draw a vacuum on the main tank and re-fill with hot oil from temporary storage tanker.

10. After filling, oil will be circulated through processing equipment to remove moisture and increase dielectric strength.

11. Once all maintenance is complete, conduct operational tests to ensure functionality IWA manufacturers specifications.