505-6634825 Standard Piping Details.pdf

This is a Standard Piping Details specification document for T-AGS 51/52 Coastal Hydrographic Survey Ships, prepared by Trinity Industries Co. for the Department of the Navy's Naval Sea Systems Command in Washington, D.C. The document serves as a comprehensive engineering specification covering piping system design, materials, installation, and construction standards for naval vessels.

The specification establishes mandatory requirements for all piping, materials, and workmanship to comply with ABS Rules & Regulations and USCG certification per 46 CFR, with adherence to federal regulations, Title 46 Subchapter "U" and "F". All valves, fittings, and flanges must be from manufacturers listed in USCG COMDT IST M 16714.3. Key technical requirements include: piping systems must be flushed, cleaned, and inspected prior to acceptance except for fills, vents, sounds, exhausts, and drains; all piping must be securely supported to prevent vibration and personnel injury; piping within 15 feet of sonar transducers requires resilient hanger support; and hydrostatically tested systems at 150% of maximum working pressure or 50 PSI minimum. The specification covers velocity constraints, pipe sizing standards (IPS), dissimilar metal corrosion prevention, insulation per ASTM F-683, painting per drawing 631-6634619, and specific penetration and support details. Multiple detailed drawings (Details 3 through 44) provide visual guidance for flange installations, overboard discharge, stub-ins, shore connections, pipe hangers, gage piping, deck drains, cleanouts, sounding tubes, water-tight penetrations, and valve locking devices. The specification references Tables A and B for pipe support spacing and sleeve sizing, with all pipe supports requiring attendance surveyor approval.