TJ-437-004 TLI Electrical Modifications.pdf

This document is a technical drawing for a Tank Level Indicator System Cabling Modification for a federal vessel. The drawing, designated 13-437-0043, was generated for upgrades to the Tank Level Indicator (TLI) system on a NOAA ship, with applicability noted for use on other vessels subject to shipboard requirements prior to implementation on non-NOAA vessels.

The drawing provides comprehensive cabling and equipment installation specifications for integrating new tank level indicators into existing shipboard systems. The design incorporates multiple radar-type level indicators for various tank types including potable water tanks, ballast tanks, and fuel tanks distributed throughout the vessel at multiple locations. The system includes junction boxes, conduit routing, and electrical connections detailed across four pages of schematic diagrams. General notes specify that materials and components must comply with commercial marine regulatory bodies including the American Bureau of Shipping (ABS), United States Coast Guard (USCG), and the Institute of Electrical and Electronics Engineers (IEEE). The drawing establishes dimensional tolerances, cable designation requirements, installation procedures for mounting brackets and terminal boards, and mandatory material substitution approval processes through NOAA Port Engineer. The technical specifications include details on cable specifications, grounding requirements, waterproof penetration standards, and comprehensive paint and finishing requirements for all installed components and surrounding surfaces. This is a technical specification document, not a contractual solicitation or procurement notice.