Pressure Testing Procedures Flashcards
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Read the first 6 Pressure Testing Procedures flashcards as text
What is the primary purpose of hydrostatic testing for pressure vessels?
Answer: To verify structural integrity under controlled pressure conditions
Hydrostatic testing verifies that a pressure vessel can safely withstand its design pressure without leaks or structural failures.
What medium is typically used in hydrostatic pressure testing?
Answer: Water
Water is the standard medium for hydrostatic testing because it is nearly incompressible, making it safer than gases if a failure occurs.
At what multiple of design pressure is a hydrostatic test typically conducted?
Answer: 1.3 to 1.5 times design pressure
Hydrostatic tests are typically conducted at 1.3 to 1.5 times the maximum allowable working pressure to verify adequate safety margin.
What must be done before conducting a pressure test on a vessel?
Answer: Verify all connections, inspect welds, and ensure safety measures are in place
Pre-test inspection verifies all connections are secure, welds are complete, and safety measures are in place to prevent accidents.
When is pneumatic testing used instead of hydrostatic testing?
Answer: When the vessel cannot support the weight of water or water could damage internal components
Pneumatic testing is used when vessels cannot support water weight or when water residue would contaminate internal components.
What should be monitored during a pressure hold period?
Answer: Pressure gauge readings for any pressure drops indicating leaks
Monitoring pressure gauge readings during the hold period reveals any pressure drops that indicate leaks requiring investigation.