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Repair Substation 6, Bangor

Active

Federal

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

This project involves the comprehensive repair and upgrade of Substation 6 in Bangor, managed by Navfac Northwest. The primary scope of work includes replacing four existing power transformers with new 7.5/10.5 MVA units featuring advanced microprocessor protection, differential protection, and less-flammable oil. The contractor is required to perform load flow readings to determine peak demand and implement a new 115-kV bypass of the substation yard using overhead lines on wood poles with manually operated switches and necessary right-of-way clearing. Additional infrastructure improvements include the installation of motor-operated switches for transformer isolation and a new ground grid with station rock compliant with IEEE 80 standards. The project also mandates the replacement of existing 15 kV switchgear inside building B7701 with a new 2000A ring bus design featuring Schneider AMI metering, rack-mounted microprocessor relays, and arc flash duct mitigation. Disposal requirements specify that most old transformers be moved to a government spares yard, while transformer T64 must have its oil removed and be sent to a recycling facility.

General Info

Navfac Northwest project to repair Substation 6, upgrading transformers, switchgear, and ground grids.

Agency

Department Of The Navy → Navfac Northwest

NAICS

237130 - Power and Communication Line and Related Structures Construction

Place of Performance

NW: BANGOR PDC, USA

Set-Aside

NONE

Documents

No documents available

Documents will appear here when they are available.

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Timeline

PostedJul 2

forecast

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Organization & Contact Information

AgencyDepartment Of The Navy → Navfac Northwest

ContactsNo contacts available

OfficeN/A

Organization / AgencyDepartment Of The Navy → Navfac Northwest

Office AddressN/A

ContactsNo contact information available

Full Description

MSR 22562453 1391 ep #1764134 E2 ep #1771243 1. Replace 4 existing power transformers with new minimum 7.5/10.5 MVA power transformers A/FA, 115 kV Delta-12.47 kV Wye. Perform load flow readings with temporary metering to determine the peak demand for sub.6. Include feeder switching to Delta Pier in load flow study. 2. Provide new 115-kV bypass of sub.6 yard with overhead line on wood poles and manually operated 3-way 115-kV manual switches at connection points outside of sub.6 yard. Include right of way clearing for new poles. 3. Provide transformer microprocessor protection relay with differential protection, CS monitoring and alarm, less-flammable oil, RTD winding sensors, Buchholz pressure relief relay, and accessory dials per WBDG spec. 4. Existing power transformers shall be delivered to govt. spares storage yard near helipad with the exception of power transformer T64 which shall have the oil removed and disposed of with the remaining dry T64 transformer delivered to Bangor recycling. 5. Provide motor operated switches for transformer high side and low side isolation. 6. Install new ground grid and connect to existing ground grid and include new station rock complying with IEEE 80 for the entire substation yard. 7. Replace existing 15 kV switchgear inside B7701 with new 15 kV, 2000A, 3Φ, 3W+G, having double high breaker cubicles and 15-kV ring bus design. Include Schneider AMI metering connected to Bangor AMI network, separate rack mounted microprocessor relays (away from breaker arc flash zone) with backup microprocessor relays for each 15-kV breaker, implement full IEEE function protection for feeder relays including 50, 51, 27, and other available functions, provide arc flash duct mitigation, switchgear ring bus tie breaker configuration, station control power transformer, spare cubicle fully pr ... NOTE: description has been truncated, please see Project Note for full description.