33 CFR 154.826 - Vapor compressors and blowers.

§ 154.826 Vapor compressors and blowers.
(a) Each inlet and outlet to a compressor or blower which handles vapor that has not been inerted, enriched, or diluted in accordance with § 154.824 of this subpart must be fitted with:
(1) A detonation arrester;
(2) A flame arrester; or
(3) An explosion suppression system acceptable to the Commandant (CG-522).
(b) If a reciprocating or screw-type compressor handles vapor in the vapor collection system, it must be provided with indicators and audible and visible alarms to warn against the following conditions:
(1) Excessive discharge gas temperature at each compressor chamber or cylinder;
(2) Excessive cooling water temperature;
(3) Excessive vibration;
(4) Low lube oil level;
(5) Low lube oil pressure; and
(6) Excessive shaft bearing temperatures.
(c) If a liquid ring-type compressor handles vapor in the vapor collection system, it must be provided with indicators and audible and visible alarms to warn against the following conditions:
(1) Low level of liquid sealing medium;
(2) Lack of flow of liquid sealing medium;
(3) Excessive temperature of the liquid sealing medium;
(4) Low lube oil level;
(5) Low lube oil pressure, if pressurized lubricating system; and
(6) Excessive shaft bearing temperature.
(d) If a centrifugal compressor, fan, or lobe blower handles vapor in the vapor collection system, construction of the blades and/or housing must meet one of the following:
(1) Blades or housing of nonmetallic construction;
(2) Blades and housing of nonferrous material;
(3) Blades and housing of corrosion resistant steel;
(4) Ferrous blades and housing with one-half inch or more design tip clearance; or
(5) Blades of aluminum or magnesium alloy and a ferrous housing with a nonferrous insert sleeve at the periphery of the impeller.
[CGD 88-102, 55 FR 25429, June 21, 1990, as amended by CGD 96-026, 61 FR 33666, June 28, 1996; USCG-2010-0351, 75 FR 36284, June 25, 2010]
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Title 33 published on 2015-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 33 CFR Part 154 after this date.

  • 2015-09-10; vol. 80 # 175 - Thursday, September 10, 2015
    1. 80 FR 54418 - Marine Vapor Control Systems
      GPO FDSys XML | Text
      Final rule; information collection approval.
      The collection of information requirements contained in the July 16, 2013 final rule (78 FR 42596) and approved by the OMB as an amendment to existing collection of information, control number 1625-0060, will be enforced beginning September 10, 2015. The requirements include provisions for VCS certifications, recertifications, periodic operational reviews, approval requests, reviews of operating manuals, failure analyses, operational review letters, and relabeling. These requirements aid the Coast Guard and industry in ensuring industry's regulatory compliance and safe practices in connection with VCSs.
      33 CFR Parts 154, 155, and 156