Spare Transformers for the Lower Snake River Plants

Amendment / Modification

• The proposal due date has been extended.

• Solicitation Number: W912EF26RA003

• Original Response Due Date: 04 Feb 2026

• New Response Due Date: 12 Mar 2026

• The deadline for proposal submissions has been extended to March 12, 2026.

Forms / Attachments / Pricing Sheets

This document contains supplemental drawings related to the opportunity. It lists various drawing numbers and their corresponding titles, which likely detail specific components, schematics, or physical layouts relevant to the overall project.

• A comprehensive list of drawing numbers and titles.
• Titles include references to "GE Isophase," "Westinghouse Transformer," "Hico Tank Base," "Transformer Pad," "Powerhouse High Voltage Equipment," and specific component types like "Hitachi Type RJ Bushing."

These drawings provide detailed technical specifications and visual representations of equipment and infrastructure. Bidders should review these to understand the physical and technical requirements of the opportunity, including the types of transformers, electrical connections, and foundational structures involved. This information is crucial for accurate proposal development and for assessing the scope of work.

Form / Attachment / Pricing Sheet

This document is the "Small Business Participation Proposal" form, required for all offerors (both small and large businesses) to complete. It requires offerors to propose the level of small business participation in the acquisition.

• Prime Offeror Classification: Check applicable boxes for the prime offeror's size and category (e.g., Large Prime, Small Business Prime, SDB, WOSB, HUBZone, VOSB, SDVOSB).
• Total Percentage Planned: Submit the combined percentage of work to be performed by both large and small businesses, with separate lines for large and small business percentages.
• Subcategory Participation: Indicate the total percentage of participation for specific small business subcategories (Small Disadvantaged Business, HUBZone, Woman Owned, Service Disabled Veteran Owned, Veteran Owned, HBCU/MI).
• Principal Supplies/Services: List the names of companies and the type of service/supply they will provide for each small business category.
• Extent of Commitment: Describe the nature of the commitment to use small businesses (e.g., prime, written contract, verbal, joint venturing).

This form is critical for bidders to detail their strategy for small business participation. It directly impacts proposal evaluation and eligibility for award, especially for large businesses which must also submit a Small Business Subcontracting Plan (FAR 52.219-9) that aligns with this proposal.

Form / Attachment / Pricing Sheet

This document, Volume 2 of the "LOWER SNAKE RIVER SPARE TRANSFORMERS T2" project, contains detailed engineering drawings and specifications related to the spare transformers. It serves as a critical reference for potential bidders by outlining the technical requirements, design parameters, and physical characteristics of the transformers and associated equipment.

• Drawing Index (G-002): Lists all drawings within Volume 2, categorized under General and Electrical.
• Transformer Requirements Summary Sheet (G-004): Details critical specifications for the 500 KV Spare GSU Transformer, including nameplate data, tank construction, accessories, bushings, insulating oil, separate control and power cabinets, factory assembly and paint, inspections, factory acceptance tests, and required spare parts.
• Layout and Limiting Dimensions (E-101 to E-105): Provides detailed schematics and dimensions for the GSU Transformer segments, crucial for understanding physical constraints and installation requirements.
• Control and Power Cabinets (E-106, E-108): Outlines the design and layout of control and power cabinets, including internal components and external connections.
• Control Schematics (E-601, E-602, E-603): Illustrates the electrical schematics for cooling and control systems, 125 VDC control and annunciation power, and terminal block connections.
• Site Location Photographs (G-006, G-007): Provides visual context of the Little Goose Lock and Dam site, including storage yard and foundation pad locations.
• Regional Temperature Data (G-005): Presents historical temperature data for the project area, relevant for environmental considerations.

This document is essential for bidders to:

• Understand the precise technical specifications and performance requirements of the spare transformers.
• Assess the physical dimensions and installation constraints.
• Identify all components and systems included in the scope of work.
• Prepare accurate proposals that meet all specified requirements.
• Evaluate the complexity and scope of the project.

Solicitation / RFP / RFQ

This document is a solicitation for spare transformers (T1) for the Little Goose Lock and Dam, Lower Snake River. It includes detailed drawings and specifications for the generator step-up transformer.

• One (1) spare generator step-up (GSU) power transformer, single-phase, 500kV class.

• Specific technical requirements include:

  • KVA Rating: 164,000/218,666
  • Voltage Ratings: 500,000 GRDY (H) - 13,200 DELTA (X) 13,200 DELTA (Y)
  • BIL Levels: 1,425 KV (H), 110 KV (X & Y), 150 KV (H0)
  • Cooling Class: ONAN/ONAF
  • Maximum Sound Level (ONAF): 80 DB
  • Maximum No-Load Losses: 165 KW
  • Maximum Load Losses: 314 KW
  • Maximum Weight: 591,500 Pounds
  • Maximum Oil Quantity: 15,539 Gallons

• Detailed specifications for tank construction, accessories, bushings, insulating oil, control and power cabinets, wiring, terminal blocks, auxiliary relays, switches, circuit breakers, and special features.

• Requirements for factory assembly, paint, inspections, and factory acceptance tests (FAT).

• Provision of spare parts as listed.

• Contract type and period of performance are not specified in this document.

• Estimated value is not stated.

• Proposal or quote submission instructions are not detailed in this document.

• Evaluation criteria are not specified.

• Key deadlines or milestones: Issue Date is October 2025.

• No specific set-aside or eligibility requirements are mentioned in this document.

• Solicitation Number: W912EF26RA003

• Volume Number: 1

• The document consists of multiple drawing sheets detailing various aspects of the transformer and its installation.

• References specification section 48 19 23.08 26.

Forms / Attachments / Pricing Sheets

This document contains supplemental drawings related to the opportunity. These drawings provide detailed technical specifications and layouts for various components, including transformer bases, foundations, bushings, site plans, and electrical equipment.

• Transformer Bases and Foundations: Drawings detailing the dimensions, anchor bolt positions, and reinforcement for HICO tank bases and power transformer foundations.
• Bushing Specifications: Technical drawings for Hitachi Type 0+C and Type RJ bushings, and ABB Type O Plus C and Type RJ bushings, including dimensions and electrical ratings.
• Site Plans: Plans illustrating the transformer storage pad area, electrical pad wiring details, and the overall maintenance yard and transformer pad site.
• Electrical Equipment: Drawings for main power transformers (Westinghouse EMB1257-0), including shell form, outdoor, single-phase details, conduit, and mounting sections, as well as control schematic and connection wiring diagrams.
• Structural Details: Drawings for transformer pad plan views, flexural steel reinforcement, and arrangement of units 4-6 electrical equipment and main power transformers.

These drawings are critical for bidders to understand the physical and electrical requirements for the installation of transformers and associated equipment. They provide precise dimensions, material specifications, and layout information necessary for accurate proposal preparation, site preparation, and installation planning.

Solicitation / RFP / RFQ

This document outlines the technical specifications for spare transformers, specifically "Class II GSU Power Transformers (T2)" and "Class II GSU Power Transformers (T1)". It details the manufacturing, factory testing, shipment, hauling, site assembly, field testing, and long-term storage requirements for these transformers.

• Procurement of two (2) single-phase generator step-up (GSU) power transformers (T2 and T1).

• Transformers must be rated 82,000 / 109,334 kVA (ONAN/ONAF) for T2 and 164,000 / 218,666 kVA (ONAN/ONAF) for T1, with a 500 kV high-voltage and 13.2 kV low-voltage.

• Transformers must be oil-immersed, self-cooled/forced air-cooled (ONAN/ONAF), and suitable for outdoor operation.

• Design must have an established record of satisfactory operation and be compatible with existing single-phase shell-type transformers.

• Specific requirements for tank construction, bushings, cooling equipment, control and power cabinets, insulating oil, and factory acceptance tests are detailed.

• Shipment, hauling, site assembly, oil-filling, field testing, and long-term storage provisions are outlined.

• Contract Number: W912EF26RA003

• The transformers are for delivery f.o.b. destination to the Little Goose Lock & Dam storage yard.

• Numerous submittals are required, including:

  • Welding Quality Control Plan (SD-01)
  • Outline and Assembly Drawings (SD-02)
  • Detail Drawings (SD-02)
  • Product Data (SD-03) for welding materials
  • Design Data Review Report (SD-05)
  • Transformer Factory Acceptance Test Report (SD-06)
  • Bushing Design Tests, Routine Tests, and Current Transformer Tests (SD-06)
  • Transformer Oil Certification (SD-07)
  • Manufacturer's Instructions (SD-08)

• Specific timelines for submittals are provided, ranging from 14 to 240 calendar days prior to various stages of the project.

• Not explicitly stated in the provided document excerpts, but the nature of the procurement suggests it is for entities capable of manufacturing and handling large electrical equipment.

• The document references numerous standards from organizations such as IEEE, ASTM, NEMA, UL, and NFPA, which bidders must adhere to.

Solicitation / RFP / RFQ

This solicitation is for the design, manufacture, and delivery of Class II power transformers, including accessories. The procurement also includes spare transformers and associated parts.

• Design and manufacture of T1 transformers (minimum 500 kV rating) and T2 transformers (minimum 500 kV rating).

• Delivery of transformers and accessories to Little Goose Dam power plant storage yard.

• Off-loading, reassembly, and testing of transformers at the delivery site.

• Furnishing of spare parts and as-built, shop, and record drawings for both T1 and T2 transformers.

• Specific technical requirements include voltage, kVA ratings, cooling class, and sound level.

• The contract type is not explicitly stated, but the solicitation includes provisions for Economic Price Adjustment (EPA) for certain cost elements.

• Period of Performance: Delivery is on or before March 31, 2030.

• Estimated Value: Not specified.

• Offer Due Date: February 4, 2026, 05:00 PM.

• Proposals will be evaluated based on five factors: Fabrication Plan and Schedule, Technical Approach, Past Performance, Small Business Participation, and Price. Factors 1, 2, and 3 are equally important and more important than Factor 4. Factors 1, 2, 3, and 4 combined are significantly more important than Factor 5 (Price).

• Award will be made on a best-value tradeoff basis.

• Proposals must be submitted electronically in two volumes: Volume I (Technical) and Volume II (Price & Administrative).

• The acquisition is unrestricted.

• Small business participation goals are established: Total Small Business (5%), Small Disadvantaged Business (0.5%), WOSB (0.5%), HUBZone (0.5%), VOSB (0.5%), and SDVOSB (0.5%).

• The solicitation incorporates FAR clauses by reference, including those related to economic price adjustment, unique item identification, and contract terms and conditions for commercial products and services.

• Bidders are encouraged to submit inquiries through the ProjNet Bidder Inquiry system.

Justification and Approval (J&A) for Other than Full and Open Competition

This document justifies and approves a sole-source procurement for spare transformers, specifically requiring Hitachi brand bushings, for the U.S. Army Corps of Engineers (USACE) Walla Walla District's Lower Snake River (LSR) hydroelectric powerhouses. The procurement is for a new firm fixed-price supply contract.

• Spare transformers for T1 and T2 Generator Step Up (GSU) transformer banks at the LSR Projects.

• The spare transformers must be equipped with Hitachi brand high-voltage, high-voltage neutral, and low-voltage bushings.

• These bushings are required to be direct replacements for existing Hitachi (formerly Westinghouse) bushings and must fit the existing electrical bus duct system without modification.

• The estimated cost for the portion of the contract requiring Hitachi brand bushings is $1,691,335.30.

• The overall estimated cost of the transformer contract is $40 Million.

• The contract type is firm fixed-price.

• The requirement will be competed using full and open competition, with offerors working with their transformer manufacturer to determine the cost of providing transformers with the specified Hitachi bushings.

• A Special Notice was posted on SAM.gov, and Industry Day was held.

• The Contracting Officer will publish notices required by FAR 5.201, and all proposals received will be considered.

• While an initial notice was set aside for small business, it ultimately resulted in no award. The current procurement is proceeding under full and open competition.

• The justification cites 10 U.S.C. §3204(a)(1) and FAR 6.302-1(a)(2) as the authority for other than full and open competition due to the necessity of using specific Hitachi bushings to avoid costly modifications to existing electrical systems.

• Market research identified no viable alternatives to specifying Hitachi bushings.

• Similar voltage bushings have been sole-sourced to Hitachi on previous contracts.

Form / Attachment / Pricing Sheet

This document is the NAVFAC/USACE Past Performance Questionnaire (Form PPQ-0). It is designed to collect feedback from clients regarding a contractor's performance on a previous project. This information is used by the government to evaluate performance risk for future solicitations.

• Contractor Information: Firm name, address, contact details.
• Work Performed As: Specifies if the contractor acted as a Prime Contractor, Sub Contractor, Joint Venture, or Other, and the percentage of work performed.
• Contract Information: Details such as Contract Number, Contract Type (Firm Fixed Price, Cost Reimbursement, etc.), Award Date, Completion Dates, and Original/Final Contract Price.
• Project Description: Assessment of work complexity and its relevance to the current submission.
• Client Information: Client's name, title, contact details, and role in the project.
• Adjective Ratings: A detailed rating system (Exceptional, Very Good, Satisfactory, Marginal, Unsatisfactory, Not Applicable) for various aspects of contractor performance, including Quality, Schedule/Timeliness, Customer Satisfaction, Management/Personnel/Labor, Cost/Financial Management, Safety/Security, and General performance.
• Narrative Remarks: Space for the client to provide specific strengths, weaknesses, deficiencies, or other comments.

This form is crucial for bidders as it outlines the specific criteria and performance areas the government uses to assess past performance. Understanding these evaluation points helps contractors prepare to provide relevant past performance information and potentially guide their current project execution to achieve favorable ratings. The client's feedback on this questionnaire directly impacts a bidder's past performance evaluation, which is often a significant factor in award decisions.