514-3275003-6 REV A AC PIPING INSTL 2ND DK and BLW.pdf

This is a technical specification document and design drawing set for air conditioning (A/C) piping installation on the second deck and below of the THOMAS JEFFERSON vessel, prepared for the National Oceanic and Atmospheric Administration (NOAA) under the National Oceanic & Atmospheric Administration division of the United States Department of Commerce.

The document comprises detailed mechanical drawings and material specifications for refrigeration piping systems serving multiple state rooms, galley areas, engine rooms, and other compartments throughout the lower and main decks of the ship. The specifications include materials lists identifying copper tubing in various sizes (ranging from 3/8" to 1-1/4" OD), brazing materials, sealants, couplings, and filler sleeves, with references to ASTM standards and Mueller Industries or equivalent manufacturers. Key technical requirements include proper support using stainless steel hangers, insulation specifications for refrigerant piping, pressure testing procedures, and installation protocols for both high-pressure and low-pressure gas piping systems. The drawings detail interconnections between air conditioning units, controllers, compressors, and distribution manifolds throughout multiple decks, with specific callouts for isolation valves, service access points, and connection details. Test procedures outlined include pressure and leakage testing in accordance with applicable industry standards, nitrogen use for evacuation procedures, and performance validation requirements. The document serves as the comprehensive technical basis for fabrication, installation, inspection, and testing of the complete air conditioning piping system for this vessel.