RHN X-Band AC Replacement

STATEMENT OF WORK (SOW) FI-MUE Gaum RHN X-Band AC Replacement 78th Signal Battalion -- 1 of 9 -- 1. INTRODUCTION This Statement of Work (SOW) defines the requirements, scope, responsibiliƟes, and deliverables for the turnkey replacement of two (2) 10-ton packaged Air CondiƟoning (AC) units that provide mission-criƟcal cooling for the Naval Computer and TelecommunicaƟons StaƟon (NCTS) / Regional Hub Node (RHN) Guam X-Band Terminal. 2. SCOPE OF WORK The contractor shall provide all necessary project management, materials, equipment, labor, and technical services to perform the following: 2.1. Decommissioning and Removal of ExisƟng AC Units  Perform lock-out/tag-out (LOTO) and safely disconnect both legacy AC units from the electrical distribuƟon system.  In accordance with all environmental regulaƟons, recover and reclaim all refrigerant from both units.  Drain and contain all compressor oils and other lubricants for proper disposal.  Rigorously disconnect and remove the units from their roof curbs/mounƟng pads.  Dismantle and transport the legacy AC units from the site to an authorized disposal and recycling facility.  Remove and dispose of any associated conduits, refrigerant lines, or ductwork that cannot be reused for the new system installaƟon. 2.2. Disposal and Environmental Compliance  The contractor is solely responsible for the off-base transportaƟon and final disposal of the two decommissioned AC units, including all components, refrigerants, and oils.  All hazardous materials must be handled and disposed of in strict compliance with U.S. Environmental ProtecƟon Agency (EPA) and applicable local Guam environmental regulaƟons.  The contractor shall provide the ContracƟng Officer's RepresentaƟve (COR) with official receipts and cerƟficates of disposal/destrucƟon for all hazardous materials and decommissioned equipment as a condiƟon of project acceptance. 2.3. InstallaƟon of New Packaged AC Units  Prepare the site for installaƟon, including any necessary modificaƟons to the exisƟng mounƟng pads to accommodate the new units.  Coordinate the delivery, rigging, and offloading of the two new packaged AC units.  Install and securely anchor both units in their designated posiƟons.  Perform electrical integraƟon to the exisƟng power panel. The contractor may reuse exisƟng conduits and wiring, provided they are in serviceable condiƟon, appropriately sized per the new -- 2 of 9 -- equipment specificaƟons, and can be connected without splicing. If exisƟng wiring is inadequate, the contractor shall provide and install new wiring from the panel to the units.  Connect to exisƟng ductwork. If modificaƟons are required, they shall be executed to Sheet Metal and Air CondiƟoning Contractors' NaƟonal AssociaƟon (SMACNA) standards.  Install new refrigerant lines, ensuring they are correctly sized, insulated, and pressure-tested per manufacturer specificaƟons. 2.4. TesƟng and Commissioning  The contractor shall develop and submit a comprehensive Test and Commissioning Plan to the technical POC for review and approval no later than 14 days prior to scheduled tesƟng.  Verify all electrical connecƟons, safeƟes, and control sequences.  Conduct funcƟonal performance tesƟng, which must include, at a minimum: verificaƟon of refrigerant charge, measurement of airflow (CFM), temperature differenƟals across coils, and staƟc pressures.  Demonstrate the system's ability to meet the cooling load requirements as specified.  Coordinate any required power outages with the COR at least 30 business days in advance. 2.5. Handover and DocumentaƟon  Provide on-site training for facility personnel covering the operaƟon, rouƟne maintenance, and troubleshooƟng of the new HVAC system.  Submit a final documentaƟon package containing as-built drawings, manufacturer's installaƟon and operaƟon manuals, a complete startup/commissioning report, and all warranty documents.  Conduct a final project walkthrough with the COR for official handover and acceptance. 3. TECHNICAL SPECIFICATIONS 3.1. ExisƟng Unit Details (For Disposal)  QuanƟty: Two (2)  Nominal Capacity: 10 Tons (each)  Status: Unserviceable and funcƟonally obsolete. To be decommissioned and disposed of. 3.2. New Packaged AC Unit SpecificaƟons  QuanƟty: Two (2)  Nominal Capacity: 10 Tons (each), providing N+1 redundancy.  Voltage: To match exisƟng site electrical service (e.g., 208V/3-Phase, 480V/3-Phase). The contractor is responsible for verifying exact site voltage during the pre-proposal site survey. -- 3 of 9 --  Efficiency: Shall meet or exceed current U.S. Department of Energy minimum IEER (Integrated Energy Efficiency RaƟo) standards for this equipment class.  Refrigerant: R-410A or other modern, EPA-approved, non-ozone-depleƟng refrigerant.  Features:  Corrosion-resistant coaƟng on condenser and evaporator coils suitable for a marine environment.  Digital scroll compressors.  Independent unit controllers capable of standalone operaƟon and/or integraƟon with a future Building AutomaƟon System (BAS).  Unit-mounted non-fused disconnect switch for maintenance isolaƟon.  Environmental Compliance: Must meet all relevant U.S. and Guam standards for noise and environmental impact.  Warranty: The contract shall include a minimum two-year comprehensive warranty covering all parts and labor, provided by the contractor or Original Equipment Manufacturer (OEM). 4. DELIVERABLES The contractor shall provide the following key deliverables:  Two (2) new 10-ton packaged AC units meeƟng all specificaƟons herein.  A complete, turnkey installaƟon including tesƟng and commissioning.  A Test and Commissioning Plan.  Final DocumentaƟon Package (As-built drawings, O&M Manuals, Test Reports, Warranty CerƟficates).  On-site training for government personnel.  A detailed Project Schedule submiƩed to the COR 30 days prior to the start of work.  Official receipts and cerƟficates for the disposal of al…