[Title 46 CFR 128] [Code of Federal Regulations (annual edition) - October 1, 1996 Edition] [Title 46 - SHIPPING] [Chapter I - COAST GUARD, DEPARTMENT OF] [Subchapter L - OFFSHORE SUPPLY VESSELS] [Part 128 - MARINE ENGINEERING: EQUIPMENT AND SYSTEMS] [From the U.S. Government Publishing Office]46 SHIPPING 4 1996-10-01 1996-10-01 false MARINE ENGINEERING: EQUIPMENT AND SYSTEMS 128 PART 128 SHIPPING COAST GUARD, DEPARTMENT OF OFFSHORE SUPPLY VESSELS PART 128--MARINE ENGINEERING: EQUIPMENT AND SYSTEMS--Table of Contents Subpart A--General Sec. 128.110 Equipment and systems. 128.120 Plan approval. 128.130 Vital systems. Subpart B--Materials and Pressure Design 128.210 Class II vital systems--materials. 128.220 Class II non-vital systems--materials and pressure design. 128.230 Penetrations of hulls and watertight bulkheads--materials and pressure design. 128.240 Hydraulic and pneumatic power and control--materials and pressure design. Subpart C--Main and Auxiliary Machinery 128.310 Fuel. 128.320 Exhaust systems. Subpart D--Design Requirements for Specific Systems 128.410 Ship's service refrigeration systems. 128.420 Keel-cooler installations. 128.430 Grid-cooler installations. 128.440 Bilge systems. 128.450 Liquid-mud systems. Authority: 46 U.S.C. 3306; 49 CFR 1.46. Source: CGD 82-004, CGD 86-074, 60 FR 57649, Nov. 16, 1995, unless otherwise noted. Subpart A--General Sec. 128.110 Equipment and systems. (a) Except as provided by this part, the design, installation, testing, and inspection of materials, machinery, pressure vessels, and piping must comply with subchapter F of this chapter. (b) This part contains requirements for equipment and systems commonly found on an OSV. If additional or unique systems, such as for low-temperature cargoes, are to be installed, they too must comply with subchapter F of this chapter. Sec. 128.120 Plan approval. The plans required by subchapter F of this chapter need not be submitted if the plans listed by Sec. 127.110(d) of this subchapter have been submitted. Sec. 128.130 Vital systems. (a) Vital systems are those systems that are vital to a vessel's survivability and safety. For the purpose of this subchapter, the following are vital systems: (1) Systems for fill, transfer, and service of fuel oil. (2) Fire-main systems. (3) Fixed gaseous fire-extinguishing systems. (4) Bilge systems. (5) Ballast systems. (6) Steering systems and steering-control systems. [[Page 434]] (7) Propulsion systems and their necessary auxiliaries and control systems. (8) Systems for transfer and control of cargo, for integral tanks or fixed independent tanks, in compliance with Sec. 125.110 of this subchapter. (9) Ship's service and emergency electrical-generation systems and their auxiliaries. (10) Any other marine-engineering system identified by the OCMI as crucial to the survival of the OSV or to the protection of the personnel aboard. (b) For the purpose of this subchapter, a system not identified by paragraph (a) of this section is a non-vital system. Subpart B--Materials and Pressure Design Sec. 128.210 Class II vital systems--materials. Except as provided by Secs. 128.230 and 128.240 of this subpart, instead of complying with part 56 of this chapter, materials used in Class II vital piping-systems may be accepted by the OCMI or the Commanding Officer, Marine Safety Center, if shown to provide a level of safety equivalent to materials in Sec. 56.60 of this chapter. Sec. 128.220 Class II non-vital systems--materials and pressure design. (a) Except as provided by Secs. 128.230, 128.240, and 128.320 of this part, a Class II non-vital piping-system need not meet the requirements for materials and pressure design of subchapter F of this chapter. (b) Piping for salt-water service must be of a corrosion-resistant material, be hot-dip galvanized, or be at least of extra-heavy schedule in wall thickness. (c) Each Class II non-vital piping-system must be certified by the builder as suitable for its intended service. A written certificate to this effect must be submitted with the plans required by Sec. 127.110(d) of this subchapter. (d) The OCMI will review the particular installation of each system for the safety hazards identified in paragraphs (a), (b)(1), and (c) through (k) of Sec. 56.50-1 of this chapter, and will add requirements as appropriate. Sec. 128.230 Penetrations of hulls and watertight bulkheads--materials and pressure design. (a) Each piping penetration, in each bulkhead required by this subchapter to be watertight, must meet the requirements for materials and pressure design of subchapter F of this chapter. (b) Each overboard discharge and shell connection, up to and including required shut-off valves, must meet the requirements for materials and pressure design of subchapter F of this chapter. Sec. 128.240 Hydraulic or pneumatic power and control--materials and pressure design. (a) Each standard piping component (such as pipe runs, fittings, flanges, and standard valves) for hydraulic or pneumatic power and control systems must meet the requirements for materials and pressure design of Sec. 128.110, 128.210, or 128.220 of this part, as appropriate. (b) Any non-standard hydraulic or pneumatic component (such as control valves, check valves, relief valves, and regulators) may be accepted by the OCMI or the Commanding Officer, Marine Safety Center, if the component is certified by the manufacturer as suitable for marine service and if-- (1) The component meets each of the requirements for materials and pressure design of subparts 56.60 and 58.30 of this chapter and if its service is limited to the manufacturer's rated pressure; or (2) The service of the component is limited to \1/2\ the manufacturer's recommended maximum allowable working pressure (MAWP) or \1/10\ the component's burst pressure. Burst-pressure testing is described in ANSI B 31.1, Paragraph 104.7.A, and must be conducted to comply with Paragraph A-22, Section, I, ASME Boiler and Pressure Vessel Code. Written certification of results of burst-pressure testing must be submitted with the plans required by Sec. 127.110(d) of this subchapter. [[Page 435]] Subpart C--Main and Auxiliary Machinery Sec. 128.310 Fuel. (a) Except as provided by paragraph (b) of this section, each internal-combustion engine installed on an OSV, whether for main propulsion or for auxiliaries, must be driven by a fuel having a flashpoint of not lower than 110 degrees F. as determined by ASTM D93. (b) The use of a fuel with a flashpoint of lower than 110 degrees F. must be specifically approved by the Commandant (G-MSE), except in an engine for a gasoline-powered rescue boat. [CGD 82-004, CGD 86-074, 60 FR 57649, Nov. 16, 1995, as amended by CGD 96-041, 61 FR 50731, Sept. 27, 1996] Sec. 128.320 Exhaust systems. No diesel-engine exhaust system need meet the material requirements in Sec. 58.10-5(d)(1)(i) of this chapter if the installation is certified as required by Sec. 128.220(c) of this part. Subpart D--Design Requirements for Specific Systems Sec. 128.410 Ship's service refrigeration systems. No self-contained unit either for air-conditioning or for refrigerated spaces for ship's stores need comply with Sec. 58.20-5, 58.20-10, 58.20-15, 58.20-20(a), or 58.20-20(b) of this chapter if-- (a) The unit uses a fluorocarbon refrigerant allowed by part 147 of this chapter; (b) The manufacturer certifies that the unit is suitable for its intended purpose; and (c) Electrical wiring meets the applicable requirements in subchapter J of this chapter. [CGD 82-004, CGD 86-074, 60 FR 57649, Nov. 16, 1995; 61 FR 1035, Jan. 11, 1996] Sec. 128.420 Keel-cooler installations. (a) Except as provided by this section, each keel-cooler installation must comply with Sec. 56.50-96 of this chapter. (b) Approved metallic flexible connections may be located below the deepest-load waterline if the system is a closed loop below the waterline and if its vent is located above the waterline. (c) Fillet welds may be used in the attachment of channels and half- round pipe sections to the bottom of the OSV. (d) Short lengths of approved non-metallic flexible hose fixed by metallic hose-clamps may be used at machinery connections if-- (1) The clamps are of a corrosion-resistant material; (2) The clamps do not depend on spring tension for their holding power; and (3) Two of the clamps are used on each end of the hose, except that one clamp may be used on an end expanded or beaded to provide a positive stop against hose slippage. Sec. 128.430 Grid-cooler installations. (a) Each hull penetration for a grid-cooler installation must be made through a cofferdam or at a seachest and must be provided with isolation valves fitted as close to the sea inlet as possible. (b) Each grid cooler must be protected against damage from debris and grounding by protective guards or by recessing the cooler into the hull. Sec. 128.440 Bilge systems. (a) Except as provided by this section, each bilge system must comply with Secs. 56.50-50 and 56.50-55 of this chapter. (b) If the steering room, engine room, centerline passageway, forward machinery space, and compartment containing the dry-mud tanks are the only below-deck spaces that must be fitted with bilge suctions, the OSV may be equipped to the standards of Secs. 56.50-50 and 56.50-55 of this chapter applicable to a dry-cargo vessel of less than 180 feet in length. Sec. 128.450 Liquid-mud systems. (a) Liquid-mud systems of piping may use resiliently seated valves of category A to comply with Secs. 56.20-15 and 56.50-60 of this chapter. (b) Tanks for oil-based liquid mud must be fitted with tank vents equipped with flame screens. Vents must not discharge to the interior of the OSV. [[Page 436]]