🔍 Key Concepts

• 46 CFR Subchapter T small passenger vessel machinery regulations • Requirements for unfired pressure vessels such as hydraulic accumulators • The role of the cognizant OCMI (Officer in Charge, Marine Inspection) in approving installations

💭 Think About

• Look at whether the regulation focuses on a specific test pressure and duration, or on approval by the OCMI, or both • Ask yourself: do small passenger vessel rules usually require testing at a fixed multiple of operating pressure, or do they more often defer to the OCMI’s judgment? • Consider whether safety/relief valve settings are normally checked at the same pressure multiple used for the vessel test, or at a different value

✅ Before You Answer

• Verify in 46 CFR whether there is an explicit pressure test requirement (e.g., 1.5 times operating pressure for a set time) for hydraulic accumulators on small passenger vessels • Check if the regulation mentions that installations must be to the satisfaction of the cognizant OCMI for this specific equipment • Confirm whether the regulation actually specifies a 2.5 times operating pressure requirement for safety/relief valve settings, or if that number seems unusually high for this application