Which option represents a test not part of the listed tests and inspections?

• A. Joint Tightness Test
• B. Pressure Relief Test
• C. Hydrostatic/Pneumatic Test
• D. System Drop Test

Answer: (B)

The main idea here is distinguishing tests that verify the vessel’s integrity and containment from tests that check safety devices. The listed tests focus on ensuring joints seal properly, the system can withstand internal pressure without leaking, and the system’s behavior is acceptable if handled or dropped. These are about the structure, seals, and overall pressure containment.

A pressure relief test, by contrast, specifically checks the performance of safety relief equipment—making sure relief valves open at the correct pressure and vent safely. That evaluates a safety mechanism rather than the vessel’s own leakage or structural integrity, so it isn’t part of the typical integrity and containment test group. That’s why this test isn’t included in the listed set.