Pumps, valves, and piping systems

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 §56.07-10

§ 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…

46 CFR §56.07-5

§ 56.07-5 -5 Definitions (modifies 100.2). (a)The definitions contained in 100.2 of ASME B31.1 (incorporated by reference; see § 56.01-2) apply, as well as the following: (1) The wordwithin the meaning of the regulations in this subchapter refers to fabricated pipes or tubes with flanges and fittings attached, for use in the conveyance of vapors, gases or liquids, regardless of whether the diameter is measured on the inside or the outside. (2) [Reserved] (b)The termoras used in this part, means the commercial diameter of the piping, i.e., pipe size. (c)The wordwhen used in this part generally relates to the wall thickness of piping, and refers to specific values as given in ASME B36.10M and B36.19M (both incorporated by reference; see § 56.01-2). (d)The wordand the phrasewithin the m…

46 CFR §56.50-50

§ 56.50-50 -50 Bilge and ballast piping. (a)(1) The requirements of SOLAS Chapter II-1 regulation 35-1 (incorporated by reference, see § 56.01-2) for passenger and cargo ships are considered equivalent to this section. (2) All vessels except unmanned barges must be provided with a satisfactory bilge pumping plant capable of pumping from and draining any watertight compartment except for ballast, oil, and water tanks. The bilge pumping system must be capable of operation under all practicable conditions after a casualty whether the ship is upright or listed. (3) Arrangements must be made whereby water in the compartments will drain to the suction pipes. Where piping is led through the forepeak, see § 56.50-1(b). (4) Where the vessel is to carry flammable liquids with a flashpoint below …