Air Handling Unit Replacement

STATEMENT OF WORK (SOW) HML NIST Biorepository Air Handling Unit (AHU) Lifecycle Replacement Project Facility Location: Department of Commerce (DOC)/National Oceanic and Atmospheric Administration (NOAA)/National Ocean Service (NOS) Hollings Marine Laboratory (HML) - NIST Biorepository 331 Fort Johnson Road Charleston, South Carolina 29412 1. Project Purpose and Background The NOAA Hollings Marine Laboratory (HML) NIST Biorepository relies on precise environmental control to preserve the integrity of biological samples and research materials. The existing Air Handling Unit (AHU) serving Room D104 is an aging Trane modular clean-room AHU that has exceeded its expected service life and no longer meets current performance, energy efficiency, or clean-room environmental operational requirements. The AHU exhibits multiple age-related deficiencies affecting reliability, maintainability, and environmental control capability. This Statement of Work defines the requirements for a Firm Fixed Price contract to perform lifecycle replacement of one (1) existing AHU serving the NIST Biorepository within HML. The project is limited to replacement within the existing mechanical room footprint and reuse of existing ductwork, piping, utilities, and building automation interfaces to the maximum extent practicable. The objective of this project is to restore reliable, code-compliant environmental control; reduce operational and contamination risk; maintain environmental stability; and ensure continued compliance with applicable Federal, state, mechanical, and safety code requirements. Replacement of the AHU with a modern, high-efficiency system will support clean-room contamination control needs, improve energy performance, and ensure continued mission capability for NOAA and NIST research programs. 2. Period of Performance The period of performance shall be one hundred twenty (120) calendar days from the date of contract award. 3. Scope of Work The Contractor shall provide all labor, materials, tools, equipment, supervision, transportation, testing, commissioning, and services necessary to remove and replace the Air Handling Unit identified in this Statement of Work. -- 1 of 9 -- 3.1 General Requirements a. The Contractor shall provide all labor, materials, tools, equipment, supervision, technical support, testing, commissioning, and related services necessary to remove and replace one (1) Air Handling Unit serving the NIST Biorepository at the NOAA Hollings Marine Laboratory. b. All work shall deliver a fully functional, code-compliant, reliable AHU system that meets or exceeds current mechanical, safety, and performance standards. c. These activities shall not alter the building structure, envelope, or use. Existing facility drawings provided to the Contractor are for reference information only; the Contractor retains sole responsibility for field-verifying all dimensions, utilities, and existing conditions prior to equipment procurement. d. Any incidental mechanical, electrical, piping, insulation, controls, or equipment support modifications required to integrate the replacement AHU with existing infrastructure are included in this scope. 3.2 Existing Equipment Status The existing Trane modular clean-room AHU serving Room D104 has reached the end of its useful operational life. System components exhibit advanced wear that has reduced reliability and increased the risk of environmental instability within the supported biorepository space. 3.3 BAS Compatibility and Integration The replacement AHU and associated control components shall be fully compatible with the existing Honeywell Tridium Building Automation System (BAS). The Contractor shall provide all hardware, controllers, network interfaces, and programming necessary to achieve full integration without degrading existing system functionality. a. Temperature, humidity, and airflow control loops. b. Trending, alarming, and electronically commutated motors (ECM) fan array/Variable Frequency Drive (VFD) operational control. c. Filter differential pressure monitoring across all filter banks. d. Execution of updated, Government-approved sequences of operation. e. Full functional verification of all data points and software interlocks. 3.4 Specific Protection Requirements a. The Contractor shall implement stringent environmental, dust, and contaminant control measures to protect adjacent occupied and laboratory areas from dust, debris, moisture intrusion, and contamination. All demolition, rigging, and installation activities must be executed in a sequential manner that prioritizes facility stability. b. If a full system shutdown is required, the Contractor shall submit a detailed outage plan for Government approval no less than ten (10) calendar days prior to execution. The outage plan must explicitly define the downtime duration, responsible personnel, contingency actions, and rapid restoration procedures. c. The Contractor shall provide and operate temporary conditioning, specialized dehumidification, and HEPA-filtered ventilation systems sufficient to maintain the -- 2 of 9 -- required temperature, relative humidity, and positive pressure stability within the NIST Biorepository throughout the duration of the removal and installation activities. Temporary systems must operate without compromising adjacent laboratory environments and must be approved by the Government in advance. 3.5 Turnkey Execution & Rigging The Contractor shall furnish all labor, equipment, lifting devices, cranes, rigging, lifting plans, permits, safety zoning necessary and associated resources to safely remove legacy components and install the new AHU asset. The turnkey scope further dictates: a. De-energizing, isolating, disconnecting, removing, and legally disposing of old equipment in accordance with applicable environmental and hazardous waste regulations. b. Reconnection of all existing ductwork, hydronic piping, electrical power, condensate lines, and cont…