38DJA65201_00_A01.pdf

This is a Job Specification and Engineering Liaison Memorandum package for the installation of a blood bank freezer aboard USS TRIPOLI (LHA-7). The work involves removing an obsolete, non-operational blood bank freezer from compartment 01-58 1/2-2-L and installing a new Panasonic MDF-DU502VHA-PA freezer (model designation PHCbi) as a permanent installation. The contractor is responsible for modifying the existing foundation to accommodate the new freezer, which differs from the original equipment specifications. The scope includes removal of ventilation ducts, insulation, and lagging; replacement of joiner bulkhead panels and metal joiner door assemblies; installation of CO2 backup piping; welding and non-destructive testing of all piping connections; hydrostatic pressure testing to 4,050 psig; operational testing; cleaning and preservation of affected surfaces; and electrical reconnection per MIL-STD-2003 requirements. Materials are government-furnished, with the freezer temporarily installed in Medical Ward (01-65-01-L) during installation preparation.

Key testing and compliance requirements include Class P-1 welding per NAVSEA standards, pressure testing at 4,050 psig (+50/-0) for 30 minutes with zero leakage allowance, operational test per the freezer's operating instructions, visual inspection of installed ventilation ducts, and testing of existing metal joiner door assemblies through four complete cycles with no binding or sticking. The project references multiple technical drawings (LHA-6 SCD 6178), installation standards (NAVSEA 009-11, 009-32), and the freezer manufacturer's operating manuals. The Engineering Liaison Memorandum (ELM 265052) provides detailed electrical disconnect/reconnect procedures and specifies that all cables and equipment installation must comply with MIL-STD-2003. Supplemental documentation includes CO2 backup kit installation procedures, electrical connection box relocation guidance, and foundation modification details to ensure Grade B shock requirements are met.