Pumps, valves, and piping systems

46 CFR §182.710

Piping for vital systems. (a) Vital systems are those systems that are vital to a vessel's survivability and safety. For the purpose of this part the following are vital systems: (1) Fuel system; (2) Fire main; (3) Carbon dioxide, Halon 1301, and clean agent systems; (4) Bilge system; (5) Steering system; (6) Propulsion system and its necessary auxiliaries and controls; (7) Ship's service and emergency electrical generation system and its necessary auxiliaries; and (8) A marine engineering system identified by the cognizant OCMI as being crucial to the survival of the vessel or to the protection of the personnel on board. (b) For the purpose of this part, a system not identified in paragraph (a) of this section is a non-vital system. (c) Piping used in a vital system must: (1) …

46 CFR §56.01-1

§ 56.01-1 -1 Scope (replaces 100.1). (a) This part contains requirements for the various ships' and barges' piping systems and appurtenances. (b) The respective piping systems installed on ships and barges must have the necessary pumps, valves, regulation valves, safety valves, relief valves, flanges, fittings, pressure gages, liquid level indicators, thermometers, etc., for safe and efficient operation of the vessel. (c) Piping for industrial systems on mobile offshore drilling units need not fully comply with the requirements of this part but must meet subpart 58.60 of this subchapter. [CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGD 73-251, 43 FR 56799, Dec. 4, 1978]

46 CFR §56.01-10

§ 56.01-10 -10 Plan approval. (a) Plans and specifications for new construction and major alterations showing the respective piping systems must be submitted, as required by subpart 50.20 of this subchapter. (b) Piping materials and appliances, such as pipe, tubing, fittings, flanges, and valves, except safety relief valves covered in part 162 of subchapter Q of this chapter, are not required to be specifically approved by the Commandant, but must comply with the applicable requirements for materials, construction, markings, and testing. These materials and appliances must be certified as described in part 50 of this subchapter. Drawings listing material specifications and showing details of welded joints for pressure-containing appurtenances of welded construction must be submitted in a…

46 CFR §56.01-2

§ 56.01-2 -2 Incorporation by reference. Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the Coast Guard must publish a document in theand the material must be available to the public. All approved incorporation by reference (IBR) material is available for inspection at the U.S. Coast Guard and the National Archives and Records Administration (NARA). Contact U.S. Coast Guard Headquarters at: Commandant (CG-ENG), Attn: Office of Design and Engineering Standards, U.S. Coast Guard Stop 7509, 2703 Martin Luther King Jr. Avenue SE, Washington, DC 20593-7509; phone (202) 372-1375; email. For information on the availabil…

46 CFR §56.01-5

§ 56.01-5 -5 Adoption of ASME B31.1 for power piping, and other standards. (a) Piping systems for ships and barges must be designed, constructed, and inspected in accordance with ASME B31.1 (incorporated by reference; see § 56.01-2), as limited, modified, or replaced by specific requirements in this part. The provisions in the appendices to ASME B31.1 are adopted and must be followed when the requirements of ASME B31.1 or the rules in this part make them mandatory. For general information, table 1 to § 56.01-5(a) lists the various paragraphs and sections in ASME B31.1 that are limited, modified, replaced, or reproduced by rules in this part. (b) When a section or paragraph of the regulations in this part relates to material in ASME B31.1, the relationship with ASME B31.1 will appear imme…

46 CFR §56.07-10

§ 56.07-10 -10 Design conditions and criteria (modifies 101-104.7). (a)(1) The maximum allowable working pressure of a piping system must not be greater than the internal design pressure defined in 104.1.2 of ASME B31.1 (incorporated by reference; see § 56.01-2). (2) Where the maximum allowable working pressure of a system component, such as a valve or a fitting, is less than that computed for the pipe or tubing, the system pressure must be limited to the lowest of the component maximum allowable working pressures. (b)(Modifies 101.2.) (1) Every system, which may be exposed to pressures higher than the system's maximum allowable working pressure, must be safeguarded by appropriate relief devices. Relief valves are required at pump discharges except for centrifugal pumps so designed and…