TJ-583-023C Davit Hydraulic Modifications.pdf

This is a technical drawing and specification document for the NOAA Ship T. Jefferson, a research vessel operated by the National Oceanic and Atmospheric Administration (NOAA). The document includes detailed hydraulic modifications and specifications for vessel systems.

The drawings encompass comprehensive hydraulic piping installations throughout the ship, including port and starboard hydraulic systems, control valve arrangements, accumulator specifications, and detailed hose assembly schematics. Key system components include multiple hydraulic winches, winch hoist connections, tension mechanisms, main cylinders, control valves (with pressure and drain configurations), shock absorbers, and hydraulic wire pullers. The document specifies material standards such as SST (stainless steel) rated at 316 grade for most fittings and components, with working pressures typically rated at 3000 PSI. Detailed installation specifications are provided for hose assemblies, including identification numbers, material composition (such as NPT configurations), and connection points throughout the vessel. The modifications address hydraulic system improvements across the lower deck, main deck, and port/starboard sections of the ship. Revision notes indicate multiple updates to material lists and installation procedures, with items added, deleted, and revised throughout the documentation. The technical drawings reference Plans 19-A through 192, providing cross-sectional elevations, installation details, and system schematics essential for implementation and maintenance of the hydraulic modifications.