TJ-152-002B Deck Extension Structure and Grating Replacement.pdf

This is a technical specification and engineering drawing document for the NOAA Ship Thomas Jefferson, specifically detailing Aft Main & 01 Deck Modifications and 01 Deck Extension Structure and Grating Replacement.

The document provides comprehensive technical specifications for structural modifications to a NOAA research vessel. The list of materials (page 1) identifies 20 line items comprising steel structural components including channels, beams, plates, angles, and specialized fittings such as fiberglass-covered oatings, threaded deck inserts, and stainless steel hardware. Material specifications call for steel (grades A-36 and A-500) and fiberglass reinforced plastic (FRP) construction. The drawing includes detailed references to 12 related structural modules and miscellaneous details with specific drawing numbers (101-6634863 through 12-152-001). The technical drawings across pages 2-4 present elevation views, section details, and plan views illustrating the installation of new deck structures, support brackets, stanchions, cable management systems, grating replacements, and associated mounting hardware. Key modifications include new deck extension structures, revised stanchion and platform arrangements, new fribreboard installations, cable reel extensions, and emergency shut-off valve relocations. All welding is specified to meet AWS standards for steel vessels, with detailed callouts for material compatibility and structural integration with existing ship systems. The specifications emphasize durability, safety compliance, and seamless integration with NOAA vessel operational requirements.