CUI Attch 1_PWS_CRAC_Unit_Decommissioning.pdf

PWS Data Center CRAC Unit Decommissioning & Demo

Version 2.3 (Tinker Air Force Base, OK USA)

14 APR 2026

Revision History

Author Name Date Reason For Changes Version

Mike Morgan 20 JAN 2026 Initial Draft 1.0

Mike Morgan 20 JAN 2026 Enhanced with technical specifications for formal engineering review

2.0

Mike Morgan 20 JAN 2026 Added Real Property documentation on requirements

2.1

Mike Morgan 20 JAN 2026 Added penetration sealing requirements 2.2

Mike Morgan 14 APR 2026 Incorporated clarifications from project Q&A session

2.3

1.0 Background

This project is required to safely decommission and remove two (2) obsolete Computer Room Air

Conditioning (CRAC) units from a data center facility. The removal of this equipment necessitates the architectural, mechanical, electrical, and structural restoration of the floor, wall, and ceiling systems to return the space to a safe, clean, and fully operational condition. This work ensures the continued integrity, safety, and professional appearance of a critical mission support facility at Tinker AFB.

2.0 Scope

This Scope of Work (SOW) encompasses the complete decommissioning, demolition, removal, and proper disposal of two existing CRAC units and all associated MEP (Mechanical, Electrical, Plumbing) infrastructure. The scope includes all necessary architectural and structural restoration work to restore the affected areas, including the certified replacement of the raised access floor (RAF) system, wall painting, and ceiling tile replacement to precisely match existing conditions and performance criteria.

3.0 Description of Work

3.1 General Services

3.1.1 The contractor shall be knowledgeable of and comply with all applicable federal, state, and local laws, codes, permits, and the most current editions of the Tinker Air Force Base (TAFB) Facility

Standard, Electrical Standard, and General Safety Requirements for Construction (00 71 00).

CUI

3.1.2 The contractor is responsible for providing all personnel, equipment, tools, materials, supervision, transportation, and incidentals necessary to perform the work. All electrical work must be performed by state-licensed journeymen electricians.

3.1.3 The contractor shall provide a qualified Project Manager responsible for site management, scheduling, coordination, and all communication with the Government Project Manager (GPM).

3.1.4 The contractor shall ensure the work area is kept clean and free of debris at the end of each workday.

3.1.5 Standard work hours are 0715 to 1600, Monday through Friday, excluding federal holidays.

Work outside these hours requires written approval from the Contracting Officer (CO) at least 48 hours in advance.

3.2 Design Work (Material Matching, Verification & Approval)

3.2.1 The contractor is responsible for field-verifying all existing conditions, dimensions, and material specifications prior to procurement.

3.2.2 All new materials must be an exact match to existing adjacent materials in color, pattern, texture, sheen, performance ratings (e.g., NRC, CAC, load capacity), and manufacturer.

3.2.3 The contractor shall submit all proposed materials, including manufacturer data sheets and physical samples, to the GPM and the TAFB Architectural Engineering Review Panel (AERP) for approval before procurement or installation.

3.3 Documentation and Submittals

3.3.1 The contractor shall submit a Contractor Health and Safety Plan for approval before work begins.

3.3.2 The contractor must obtain an approved Base Civil Engineering Work Clearance Request prior to starting any demolition or construction work.

3.3.3 (MODIFIED) Upon completion, the contractor shall provide as-built documentation, including red-line markups of affected electrical panel schedules and floor plans indicating the restored area.

Documentation shall be provided in PDF format.

3.3.4 (NEW) The contractor shall provide the Government Project Manager (GPM) with all necessary documentation to support the update of the installation's real property records. This includes, but is not limited to, forms and supporting data confirming the permanent removal of the capital equipment (2 CRAC units) from the facility.

3.4 MEP & Selective Demolition Work

3.4.1 (MODIFIED) The Government will remove and dispose of all refrigerant prior to contract award. The contractor shall verify that all refrigerant has been safely recovered before proceeding.

3.4.2 (Electrical) Identify, lock-out/tag-out, and verify zero-energy state. Completely remove all associated electrical service, including conduits, wiring, junction boxes, and breakers, back to the source panelboard. Install labeled blank covers in empty breaker slots and update the panelboard schedule to reflect "SPARE".

3.4.3 (MODIFIED) Disconnect refrigerant and condensate drain lines. The connection point at the source shall be permanently capped and sealed watertight/airtight per applicable plumbing and mechanical codes.

3.4.4 (Structural/Demolition) Demolish and remove the indoor CRAC unit frames and outdoor condensing units, including their mounting pads/stands. Demolition methods shall not impart vibration or shock loads to the building structure. Contractors shall always protect adjacent structures and equipment.

3.4.5 (MODIFIED) All demolished equipment and debris shall be hauled off base for legal disposal.

Contractor shall provide their own dumpsters. Government-owned dumpsters shall not be used.

3.5 Architectural & Structural Restoration Work

3.5.1 (MODIFIED) Inspect the concrete sub-floor for damage after CRAC unit removal. Report any defects to the GPM prior to proceeding. Install new raised access floor (RAF) pedestals, stringers, and panels of similar or like materials where the CRAC units were located. The new system must be rated to support foot traffic and the weight of occasional bookshelves or storage cabinets. The finished surface shall be flush and level with the existing adjacent floor to a tolerance of 1/16 inch.

3.5.2 (MODIFIED) Install new, matching carpet tiles on the new RAF panels.

3.5.3 (Architectural) Prepare affected wall surfaces by patching, sanding, and priming as needed to achieve a Level 4 drywall finish.

3.5.4 (MODIFIED) Paint the entire prepared wall area from corner to corner. The Government will relocate any existing furniture or items on or close to the subject walls prior to the start of work.

3.5.5 (Architectural) Repair any damage to the ceiling grid system, ensuring it is level and structurally sound.

3.5.6 (Architectural) Install new ceiling tiles that match existing tiles in size, color, pattern, and performance ratings (NRC - Noise Reduction Coefficient, and CAC - Ceiling Attenuation Class).

3.5.7 (NEW) (Penetration Sealing)

3.5.7.1 (Exterior Penetrations): All former exterior wall or roof penetrations for refrigerant lines, condensate lines, or electrical conduits shall be made permanently watertight and airtight. The contractor shall use appropriate backer material and apply an exterior-grade, UV-stable, non-shrinking sealant compatible with the existing substrates. The finished seal must prevent all air, water, and pest infiltration.

3.5.7.2 (Interior Penetrations): All former interior floor, wall, or ceiling penetrations shall be sealed.

If a penetration passes through a fire-rated assembly (floor or wall), the contractor MUST install a

UL-listed firestop system appropriate for the type of penetration and rated to match or exceed the rating of the assembly. The installed system must comply with the manufacturer's instructions and all applicable fire codes. Non-rated interior penetrations shall be sealed to maintain acoustic and air-barrier integrity.

3.6 Inspection and Acceptance

3.6.1 The contractor shall conduct a post-completion walkthrough with the GPM.

3.6.2 All deficiencies shall be documented on a formal punch list.

3.6.3 Final acceptance is contingent on a zero-item punch list and receipt of all required documentation (as-builts, disposal certificates).

4.0 Product

The contractor shall provide and install the following materials, ensuring they match existing site conditions and are approved by the GPM/AERP prior to installation:

4.1 Raised Access Floor (RAF) system components (panels, pedestals, stringers).

4.2 Solution/space-dyed nylon carpet tiles.

4.3 (MODIFIED) Interior paint and primer: Sherwin Williams ProMar 200, Eggshell sheen, in color

"Reflection".

4.4 Suspended ceiling tiles.

5.0 Government Furnished Property/Support

5.1 The Government will provide access to the work site and existing utilities required for the work.

5.2 (MODIFIED) The Government will provide carpet tiles for contractor installation. Material specifics:

Manufacturer J&J, Style Name "Jack", Color #3423 "Hem".

6.0 Site Conditions

6.1 (MODIFIED) The work will be performed within an active data center facility. The contractor must take all necessary precautions to protect existing equipment and minimize disruption to ongoing operations. Outages shall be performed after standard duty hours. All other work will be performed during standard duty hours (0715-1600 M-F).

6.2 The contractor is responsible for field-verifying all dimensions, measurements, and locations of existing utilities and conditions that may affect the work.

7.0 Voluntary Protection Program (VPP)/Safety

7.1 The contractor shall comply with all requirements of the TAFB General Safety Requirements for

Construction (00 71 00), including EM 385-1-1, AFI 91-202, and 29 CFR 1926.

7.2 The contractor shall submit a site-specific Health and Safety Plan detailing procedures for accident prevention, health protection, and management of job-specific hazards.

7.3 The contractor must adhere to all mishap reporting procedures as defined in Section 1.3.3 of the

TAFB General Safety Requirements.

7.4 Contractor employees shall follow the direction of Government employees for all emergency evacuation procedures (fire, tornado, bomb threat) and participate in all drills.

8.0 Base/Installation Specifics

8.1 All contractor personnel and vehicles must comply with TAFB entry procedures. All commercial trucks must enter through the designated Truck Gate for inspection.

8.2 The contractor is responsible for obtaining all necessary base passes and credentials for its employees in advance of the work.

8.3 The work area, including staging and storage, must be kept clean, and screening fences shall be installed around the site perimeter as approved by 72 ABW/CE Architects.

9.0 Deliverables (CDRLs)

9.1 Contractor Health and Safety Plan.

9.2 Material and Finish Samples for GPM/AERP approval.

9.3 (NEW) Product Data Sheets for all proposed sealants and firestop systems.

9.4 As-Built Documentation.

9.5 Real Property Transfer/Removal Documentation.

9.6 Final Punch List for acceptance walkthrough.

10.0 Performance Objective Summary

Performance Objective SOW Paragraph Performance Threshold

1) General Oversight & Compliance 3.1 Zero violations of TAFB standards. All communications are responded to within one business schedule.

2) Demolition & Restoration 3.4, 3.5 All work completed with no damage to Government property. Finishes are an exact match to existing. All penetrations are sealed in accordance with fire and weatherproofing standards.

3) Documentation & Submittals 3.3, 9.0 All required submittals, including as-builts and real property documentation, are provided prior to final payment.

4) Safety 7.0 Zero safety violations. Health and Safety Plan approved prior to work. All mishaps reported correctly.

5) Acceptance 3.6 Zero punch list items remain unresolved prior to project completion.