TINKER AFB MAC BOA WWYK150083 - Repair Transformer Vault 6, B9001

Amendment / Modification

This amendment modifies the solicitation FA813726R0008.

• Proposal Due Date Change: The deadline for proposal submissions has been extended from 4:00 PM on April 10, 2026, to 4:00 PM on April 14, 2026.

• Addition of Government Response to RFIs: The government's responses to pre-bid Requests for Information (RFIs) have been added to Section J.

• General Statement: All other terms and conditions of the original document remain unchanged.

• Section A - Solicitation/Contract Form: The Response Due Date has been updated.

• Section C - Description/Specifications/Statement of Work: The requirements text has been modified to specify the repair by replacement of two gas-filled 2000KVA transformers, associated 480V switch gear (#6C and #6D), all 15KV switches, and the original 3000A tie bus, to be performed in accordance with the attached SOW.

• Section J - List of Attachments: Two attachments related to pre-bid RFIs and their government responses have been added.

The proposal submission deadline has been extended. Bidders should review the newly added government responses to RFIs in Section J and the updated requirements text in Section C.

Questions & Answers / Clarifications

This document provides responses to follow-up Pre-Bid Requests for Information (RFIs) regarding the "Repair Transformer Vault 6, B9001" project (WWYK150083).

• Hoist and Beam Usage: The contractor is responsible for designing and providing their own temporary hoist system. The existing hoist beam is damaged and shall not be used. The government will not provide updated designs for its replacement.
• Equipment Weight: Existing equipment weighs 19,500 pounds per unit. The weight of new equipment is the contractor's responsibility.
• Temporary Lift System: Providing a temporary lift system is not cost-effective. The contractor must use their own means and methods for hoisting equipment.
• Electrical Feed: Buses 6C2, 6C3, 6D1, and 6D2 will be temporarily fed from Vault 5, not Vault 7. No additional load will be tied to Vault 7 equipment.
• Outage Windows: Outage durations and sequences must be coordinated and submitted by the contractor for approval. A temporary transformer/substation is not required.
• Testing Organization: The testing organization must be a first-tier subcontractor and perform work with NETA Level III or NICET certified technicians.
• Finish Match: Field-directed best match acceptance is required for panel patch and sealant.

These clarifications address specific questions regarding the use of existing infrastructure, contractor responsibilities for hoisting and electrical feeds, and testing requirements. Bidders should incorporate this information into their proposals, particularly concerning the design and provision of a hoist system and the temporary electrical connections.

Solicitation / RFP / RFQ

This solicitation is for the repair and replacement of transformers, switchgear, and associated components within Transformer Vault 6 (B9001) at Tinker Air Force Base, Oklahoma. The project involves replacing two gas-filled 2000KVA transformers, associated 480V switch gear (#6C and #6D), all 15KV switches, and the original 3000A tie bus, all of which have reached the end of their service life. Additionally, the work includes repairing the interior lighting, adding visual fire alarm notification devices as required by ABA standards, and repairing the vault's exterior.

• Replacement of two 2000KVA transformers.

• Replacement of 480V switch gear (#6C and #6D).

• Replacement of all 15KV switches.

• Replacement of the original 3000A tie bus.

• Repair of interior lighting.

• Installation of visual fire alarm notification devices.

• Repair of the vault's exterior.

• Compliance with ABA requirements.

• Contract Type: Firm Fixed Price (as indicated in Section B).

• Estimated Magnitude: Between $1,000,000 and $5,000,000.

• Period of Performance: 10 calendar days after notice to proceed for commencement, and 271 calendar days for completion.

• Liquidated Damages: $277.75 per calendar day of delay.

• Proposal Submission Deadline: March 13, 2026, by 4:00 PM local time.

• Evaluation Criteria: Lowest Priced Technically Acceptable (LPTA) Source Selection procedures will be used. Proposals will be evaluated based on technical acceptability and price. Technical evaluation will focus on the offeror's approach to meeting performance and capability requirements.

• Proposal Validity: Offerors must state that their proposal is valid until the date specified in SF 1442, block 13d.

• The document references "Small Business Program Representations" and "Limitations on Subcontracting," indicating potential considerations for small businesses.

• Offerors are urged to inspect the site.

• The solicitation includes numerous FAR and DFARS clauses covering various aspects of construction contracts, including inspection, acceptance, payment, labor standards, and material requirements.

• Attachments include Statement of Work (SOW), Submittal Register, Drawings, ODS, LDS, Recovered Materials Determination Form, and Wage Determination.

Amendment / Modification

This amendment (0002) to solicitation FA813726R0008 modifies the following:

• FIRST: Additional RFI questions are now due by 4:00 PM on March 25, 2026.

• SECOND: The proposal due date has been extended from 4:00 PM on March 25, 2026, to 4:00 PM on April 10, 2026.

• Proposal due date.

• RFI question due date.

• The deadline for submitting proposals has been extended to April 10, 2026.

• The deadline for submitting additional RFI questions has been set for March 25, 2026.

Amendment / Modification

This amendment modifies the solicitation FA813726R0008, originally dated 19 Feb 2026, with the following changes:

• Additional RFI questions are now due by 4:00 PM on 25 March 2026.

• The proposal due date has been extended from 4:00 PM on 25 March 2026 to 4:00 PM on 10 April 2026.

• The due date for RFI questions has been updated.

• The due date for proposal submissions has been extended.

• The deadline for submitting proposals has been extended to 4:00 PM on 10 April 2026.

• The deadline for RFI questions has been clarified as 4:00 PM on 25 March 2026.

Questions & Answers / Clarifications

This document provides responses to pre-bid Request for Information (RFI) questions submitted by potential bidders for Project WWYK150083, Repair Transformer Vault 6, B9001.

• Transformer Type: Existing transformers are gas-filled, not oil-filled, and do not contain PCBs. Disposal responsibilities for PCBs are not applicable.
• Busway Transition: The intent is to provide busway adapters and extend the existing busway (ITE XL-X) to the new gear, similar to the current installation. Custom busway adapters will be used, not end cable tap boxes.
• Metering: The base standard ION8650 meters are expected. Externally mounted meters are acceptable if they cannot be mounted to the switchgear.
• Existing Transformers 6E and 6A: These transformers appear to be bused to the existing primary switches via a closed-coupled connection, but contractors will need to confirm on-site.
• Fire Alarm Panels: Relocation of Node 8 for legacy fire alarm panels is not within the scope of this project.
• Phasing: While the SOW states no government-provided phasing, demo work shall be planned in phases to minimize production impact. Contractors must coordinate with the user group for production schedules.
• Electrical Standards: The project will follow the 2025 Tinker AFB Electrical Standards, not the January 2019 version.
• Fire-Rated Walls: There are no fire-rated walls included as part of this scope of work.
• Hoist System: Contractors are allowed to install and remove their own hoist system; the existing hoist beam is not to be used due to observed damage.
• Temporary Power: The project references temporarily transferring power, not providing a temporary power transformer. The means and methods for this transfer are the contractor's responsibility.
• Arc Flash: Arc-flash mitigation techniques shall be used, not arc-resistant gear. Arc-resistant gear will not fit the provided footprint and has a longer lead time.
• Period of Performance (POP): The POP is 271 days. The government may issue a suspension of work for long lead items after submittal approval.

These clarifications provide specific details on technical requirements, materials, installation methods, and project timelines, which bidders should consider when preparing their proposals. Key details include the type of busway transition, metering requirements, and the approach to arc flash protection.

Amendment / Modification

This amendment modifies the solicitation FA813726R0008.

• The due date for sealed offers has been extended from 4:00 PM on March 13, 2026, to 4:00 PM on March 25, 2026.

• Section A - Solicitation/Contract Form

  • Percent Set Aside: Changed from '100' to 'Small Business'
  • Small Business Type: Changed from 'Small Business' to 'Small Business'
  • Response Due Date: Changed from '13 Mar 2026' to '25 Mar 2026'

• The proposal submission deadline has been extended to March 25, 2026.

• The set-aside for this solicitation has been changed to 100% Small Business.

Amendment / Modification

This amendment modifies the solicitation FA813726R0008.

• The due date for sealed offers has been extended from March 13, 2026, at 4:00 PM to March 25, 2026, at 4:00 PM.

• Solicitation/Contract Form (Section A)

• Response Due Date

• The deadline for submitting proposals or quotes has been extended to March 25, 2026.

Questions & Answers / Clarifications

This document provides responses to pre-bid Request for Information (RFI) questions submitted by potential contractors for Project WWYK150083, Repair Transformer Vault 6, B9001.

• Transformer Type & PCB Testing: The existing transformers are gas-filled, not oil-filled, and therefore do not require PCB testing or disposal.
• Busway Transition: The intent is to use custom busway adapters to extend the existing busway to the new gear, similar to the current installation, not end cable tap boxes.
• Existing Busway: The existing busway is identified as ITE XL-X.
• DPM Meters: Base standard ION8650 meters are expected for the new SWGR 6C/6D. Externally mounted meters are acceptable if they cannot be mounted to the switchgear.
• Fire-Rated Walls: There are no fire-rated walls included as part of this scope of work.
• Hoist System: The contractor is permitted to install and remove their own hoist system; the existing hoist beam is not to be used due to observed damage.
• Phasing: While the SOW states no government phasing, demo work will be phased to minimize production impact. Continuity of power is to be maintained, and contractors must coordinate with the user group for production schedules.
• Electrical Standards: The project will follow the 2025 Tinker AFB electrical standards, not the 2019 version.

These clarifications provide essential details regarding the project's scope, materials, and technical requirements, which bidders should consider when preparing their proposals. Specific drawings and SOW sections are referenced for further detail.

Form / Attachment / Pricing Sheet

This document is a sign-in sheet for an initial site visit related to Project WWYK150083, "Repair Transformer Vault 6, B9001". It records attendees, their organizations, and whether they represent a prime contractor.

• Date of Site Visit: 2-Feb-26
• Project Title: Repair Transformer Vault 6, B9001
• Proposal Due Date: 13-March-26
• RFI Due Date: 17-Feb-26
• List of attendees with their names, organizations, and prime contractor status.

This document confirms attendance at the site visit, which may be a mandatory or highly recommended step for potential bidders. It also provides key dates for proposal submission and RFI inquiries. The list of attendees and their organizations can offer insight into the competitive landscape and potential teaming partners.

Form / Attachment / Pricing Sheet

This document is the Recovered Materials Determination Form (RMDF) and its accompanying User's Guide. It is used to identify items within a procurement action that are subject to the Comprehensive Procurement Guidelines (CPG) for recovered materials, energy efficiency, and environmentally preferable purchasing (EPP). It also serves to document any applicable exemptions.

• The form requires identification of specific EPA-designated items being procured, categorized under Construction Products, Paper and Paper Products, Park and Recreation Products, Transportation Products, Vehicular Products, Miscellaneous Products, USDA-designated biobased items, Energy Star products, and Federal Energy Management Program (FEMP) Low Standby Power products.
• It includes sections for determining if EPA recycled-content requirements have been met or if compliance is not attainable, with justifications for inapplicability (e.g., unavailability, failure to meet performance standards, unreasonable price).
• The form is to be signed by an individual with technical knowledge of the products or services being purchased.

Bidders should be aware that this form is part of the procurement process, indicating the government's consideration of environmentally preferable purchasing. The specific items listed on the form may reflect requirements or preferences that bidders need to address in their proposals or product offerings. Understanding which categories of products are being evaluated for recycled content or EPP compliance can help bidders tailor their submissions and demonstrate compliance with federal sustainability goals.

Solicitation / RFP / RFQ

This solicitation is for the "Repair Transformer Vault 6, B9001" project located at Tinker AFB, Oklahoma. The work involves the repair and replacement of critical electrical components within Transformer Vault 6, including two gas-filled 2000KVA transformers, associated 480V switch gear, 15KV switches, and the original 3000A tie bus, all of which have exceeded their rated life expectancy. Additionally, the project includes replacing interior lighting, adding visual fire alarm notification devices to meet ABA requirements, and repairing the vault's exterior.

• Replacement of two 2000KVA transformers.

• Replacement of associated 480V switch gear (labeled #6C and #6D).

• Replacement of all 15KV switches.

• Replacement of the original 3000A tie bus.

• Replacement of interior lighting.

• Installation of visual fire alarm notification devices.

• Repair of the vault's exterior.

• Contract Type: Negotiated (RFP)

• Estimated Magnitude of Construction: $1,000,000 to $5,000,000

• Performance Period: 10 calendar days to commence work after notice to proceed, and 271 calendar days to complete the entire work.

• Liquidated Damages: $277.75 per calendar day of delay.

• Proposal Submission Deadline: March 13, 2026, at 4:00 PM local time.

• Proposals must be submitted in original and 1 copy.

• Offers must be valid for at least 120 calendar days after the due date.

• Evaluation criteria will be detailed in Section M.

• Not explicitly stated in the provided pages, but NAICS code 236220 (Commercial and Institutional Building Construction) with a size standard of $45,000,000.00 Annual receipts is provided.

• Offerors are instructed to see Section L (Instructions to Offerors) and Section M (Evaluation Factors for Award) for specific information.

• Performance and Payment Bonds are required.

• Site visit information is provided in Section L.

Other / Unclassified

This document outlines the liquidated damages (LDs) policy for Project WWYK150083, "REPAIR TRANSFORMER VAULT 6, B9001." It specifies that LDs will be assessed for each calendar day of delay in completing work on the contract or delivery order, in accordance with FAR 36.206 and DFARS 236.206.

The document details the calculation of LDs based on specific roles and their associated hourly rates, broken down into "ENGINEERING TITLE" and "GOVERNMENT TITLE" categories. It also states a minimum LD amount of $227.75 per day.

Key points include:

• LDs apply when the contractor has complete control over the pace of work.
• LDs are assessed for each calendar day of delay.
• The rate of assessment is considered reasonable given the requirement.

This document is crucial for bidders to understand the financial implications of project delays. It clearly defines the penalty structure for late completion, allowing potential vendors to factor these risks into their proposals and project planning. The breakdown of costs per role provides transparency on how these damages are calculated, enabling a more accurate assessment of project timelines and associated risks.

Other / Unclassified

This document is a memorandum from the Department of the Air Force, Headquarters 72 Air Base Wing, Tinker Air Force Base, Oklahoma. It addresses the requirement for "WWYK150083, Repair Transformer Vault 6, B9001". The memorandum clarifies that the requirement has been reviewed and does not necessitate the contractor's use or delivery of Class 1 Ozone Depleting Substances (ODS) as identified in Air Force Policy.

This document is relevant to potential bidders as it provides a specific clarification regarding environmental compliance, specifically concerning Ozone Depleting Substances (ODS), for the "Repair Transformer Vault 6, B9001" requirement. Bidders can use this information to understand a key aspect of the contract's performance requirements and ensure their proposals accurately reflect compliance with this clarification.

Statement of Work (SOW) / Performance Work Statement (PWS)

This Statement of Work (SOW) details the requirements for the repair and replacement of gas-filled transformers, associated switchgear, and tie bus at Tinker Air Force Base, Oklahoma, due to exceeding their rated life expectancy. It also includes the addition of interior lighting and visual fire alarm notification devices.

• Furnish all materials, labor, plant, tools, transportation, equipment, testing services, quality control, and incidentals for the repair and replacement of two 2000KVA transformers, 480V switch gear, 15KV switches, and a 3000A tie bus.

• Repair interior lighting.

• Add visual fire alarm notification devices as required by ABA.

• Repair the vault's exterior.

• Perform a site investigation to verify existing conditions; as-built drawings are available.

• Identify and perform necessary logistical, architectural, and structural work.

• Provide any assemblies, frameworks, or apparatus not explicitly identified but required for a complete system.

• Quality control shall be executed in accordance with specification section 01 45 00.00 10.

• Contractor shall maintain records of all required inspections and corrective actions, submitting documentation weekly with progress reports.

• Progress reports are used for computing payments and monitoring progress against the baseline schedule.

• Work to be performed at Tinker Air Force Base, Oklahoma.

• Construction shall generally take place during normal duty hours (0700 – 1600 Monday-Friday), with utility outages as an exception.

• Contractor Personnel: Must have current/valid licenses and certifications. Employees must be easily recognized (distinctive clothing or badges). Key personnel include Project Manager (PM), Quality Control Manager (QCM), Site Safety and Health Officer (SSHO), and Project Superintendent, each with specific experience requirements and designated alternates. Subcontractors performing 'delegated' design must be authorized.

• Badging: AFMC Form 387 (contractor badges) are required for all personnel accessing Tinker AFB. A Certifying Official must be designated.

• Quality Control: Contractor is responsible for inspection and documentation of quality. Includes an inspection system, deficiency prevention methods, and inspection files.

• Health and Safety: Commander's statement of safety intent, adherence to OSHA VPP, emergency evacuation procedures, and mishap reporting are required. Compliance with EM 385-1-1 and other safety standards is mandatory.

• Bioenvironmental Regulations: Review of Material Data Sheets (MDS) for hazardous materials, ventilation measurements, welding safety, noise level compliance, and confined space entry permits are required.

• Controlled/Restricted Area: Work is within Bldg. 9001. Escorts are required for personnel accessing this area. Entry Access Lists (EAL) and Vehicle Entry Access Lists (VEAL) must be submitted 14 days prior to access.

• Documentation: All documents must be submitted electronically, with digital signatures where required. Specific file naming conventions and formats (PDF, DWG) are detailed.

• Construction Schedule: A baseline schedule must be submitted within 10 days of NTP, using NAS/Critical Path Method, including cost loading. Schedule updates are required monthly.

• Submittals: A submittal register must be reviewed and revised within 10 days of NTP. Design is 100% complete; contractor's design efforts are limited to 'delegated design' products.

• Record Drawings: Working as-built drawings must be maintained on-site and submitted prior to pre-final inspection. Final record drawings must be submitted within 10 days after pre-final inspection approval.

• O&M Manuals and Training: O&M manuals and training plans must be submitted for approval 30 days prior to final inspection.

• DD Form 1354: Must be submitted 14 days prior to final inspection.

• Government Furnished Property: None.

• Staging/Storage: Limited to the immediate construction site; additional areas require a request.

• 'OR EQUAL' Clause: Specific manufacturers/model numbers indicate design intent; substitutions require detailed justification and COR approval (not CO).

Other / Unclassified

This document is a General Decision Number (GDN) for wage determinations in Oklahoma County, Oklahoma. It specifies prevailing wage rates and fringe benefits for various construction-related trades. The document includes a publication date of 01/02/2026 and supersedes a previous decision.

This document is relevant to bidders as it outlines the minimum wage rates and fringe benefits that must be paid to laborers and mechanics employed on federal or federally funded construction projects in Oklahoma County, Oklahoma. Contractors must ensure their bids and proposed labor costs comply with these determined rates to meet federal labor standards requirements.

Form / Attachment / Pricing Sheet

This document is a Submittal Register for the Tinker AFB General Requirements Specification (Div 00-01) for Job Name: WWYK150083 REPAIR TRANSFORMER VAULT 6, B9001. It lists all required submittals from the contractor, including specifications, descriptions, and relevant paragraph numbers.

• Submittal Register: A comprehensive list of required submittals.
• Specification Section: Identifies the relevant specification division and section.
• Submittal Description: Details the item to be submitted (e.g., Preconstruction Submittals, Test Reports, Product Data, Shop Drawings, Closeout Submittals).
• Paragraph #: References the specific paragraph in the specification that the submittal relates to.
• Contractor Schedule Dates: Columns for tracking submission, review, and approval dates.
• Approving Authority: Columns for tracking actions by the Government or Architect/Engineer.
• Remarks: Provides specific instructions or notes for certain submittals, such as deadlines or required formats.

This register is crucial for bidders as it outlines all documentation and information they are required to submit throughout the project lifecycle. It details the types of documents needed, when they are due, and who is responsible for their review and approval. Bidders must use this register to ensure timely and complete submission of all required items to comply with contract requirements.

Forms / Attachments / Pricing Sheets

This document contains the "Sheet Index, Vicinity Map and Building Key Plan" for the "Repair Transformer Vault 6, B9001" project (WWYK150083). It serves as a guide to the various architectural, structural, electrical, and fire protection drawings included in the project set.

• Sheet Index: Lists all drawing sheets by discipline (Architectural, Structural, Electrical, Fire Protection) with their corresponding sheet numbers and titles.
• Vicinity Map: Shows the project location within Tinker AFB, OK, with various gates and nearby buildings indicated.
• Building Key Plan: Provides a layout of the facility, highlighting the "Project Location" at Vault 6, B9001.

This document is crucial for bidders to understand the overall scope and organization of the project's technical documentation. It helps in navigating the various drawings to identify specific requirements, locations, and details related to the transformer vault repair. Bidders should use this as a starting point to locate and review all relevant drawings for a comprehensive understanding of the work required.