Western Area Power Administration – Williston 2 Substation
WESTERN AREA POWER ADMINISTRATION WILLISTON 2 SUBSTATION - STAGE 02 DEPARTMENT OF ENERGY
WILLISTON, NORTH DAKOTA
Items of work consist of: oil detention basin; place and compact earth material and backfill; seeding, Substation Concrete: provide foundations and anchor bolts for substation structures and electrical equipment; provide type “C” cable trench.
Installation of Government-furnished equipment (GFE): Four (4) 230-kV power circuit breakers, eight (8) 115-kV power circuit breakers, five (5) 230-kV coupling capacitor voltage transformers, sixteen (16) 115-kV coupling capacitor voltage transformers, twelve (12) 115-kV current transformers, vertical switchboard sections, eleven (11) 230-kV disconnecting switches, thirteen (13) 115-kV disconnecting switches, and four (4) 115-kV disconnecting switches with ground blades. Provide 13.8-kV pad mounted transformer, 14.4-kV combination interrupter switch and fuses, 14.4-kV voltage transformers, 208 V resistor, 125 V ac distribution panelboard, and control cables. Provide associated outdoor electrical equipment and material. Furnish and install 115-kV Tie Line from Williston 2 XFMR KV2A 115-kV Bus Structure to Williston substation. Construct four (4) reinforced concrete foundations for Type 149Y (BP) transmission line steel pole structures with Government-furnished anchor bolt cages. Install one (1) Type 149Y-55 (BP) steel pole structure, 0/1, on concrete foundation for the 115-kV Tie Line from Williston 2 XFMR KV2A 115-kV Bus Structure to Williston substation. Install one (1) Type 149Y-50 (BP) and two (2) Type 149Y-55 (BP) steel pole structures on concrete foundations for the 115-kV MWEC Trenton-Williston 2 (Lower Yellowstone) Transmission Line. Furnish and install 115-kV MWEC Trenton-Williston 2 (Lower Yellowstone) Branch Line from WC-WN structure 75/4A to Williston 2 Substation. Install Government-furnished vertical switchboards.
ICS to provide the power and control cable from the 230 and 115-kV power circuit breakers, the 230-kV power transformer, the station service DWA, and instrument transformers into the control panels in the service building.
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