According to USCG regulations pertaining to cargo and miscellaneous vessels, on all vessels equipped with ammonia refrigeration units to refrigerate cargo spaces, for protection against refrigerants, what is required?
• 46 CFR requirements for refrigeration systems on cargo and miscellaneous vessels • Difference between a self-contained breathing apparatus (SCBA) and a gas mask in terms of protection against toxic gases like ammonia • Regulatory trigger based on refrigerated space volume (small vs very large spaces)
• Is ammonia considered highly dangerous/toxic in confined spaces, and what type of respiratory protection does it typically require under USCG regulations? • For an emergency leak, which device allows entry into an oxygen-deficient or highly contaminated atmosphere: an SCBA or a simple gas mask? • Does it make sense that the regulation would only apply to extremely large refrigerated volumes, or would a much smaller volume still present a serious hazard in a shipboard space?
• Check 46 CFR sections that deal with refrigeration systems and protective equipment on cargo/miscellaneous vessels • Confirm whether the wording is specifically “self-contained breathing apparatus” or “gas mask” in the regulation • Verify the exact volume threshold (in cubic feet) that triggers the requirement in the CFR text before choosing an answer
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