🔍 Key Concepts

• 46 CFR requirements for inspection and testing of pressure vessels • Difference between periodic interval inspections and event-based inspections (like certification) • Role of the marine inspector’s discretion versus fixed regulatory requirements

💭 Think About

• Ask yourself: does 46 CFR usually set a fixed time interval for hydrostatic tests of unfired pressure vessels with manholes, or tie them to another required event? • Consider how often a vessel’s Certificate of Inspection (COI) is normally renewed, and whether that timing might be linked to required tests. • Think about when the marine inspector has true discretion: is it typically used to override or replace a specific testing schedule, or to require additional tests when needed?

✅ Before You Answer

• Verify in 46 CFR Part dealing with unfired pressure vessels and boilers what it actually says about hydrostatic tests with manholes. • Check whether the regulation uses wording like "at each inspection" or a specific number of years. • Confirm whether inspector’s discretion is described as a supplement to, or a replacement for, the standard testing interval.