Quality Control Procedures Flashcards
7 cards from real STEAMFITTER practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Quality Control Procedures flashcards as text
Which document must be completed before a hydrostatic pressure test can begin on a steam piping system?
Answer: Pre-test inspection checklist
A pre-test inspection checklist must be completed to confirm all joints are accessible, gauges are calibrated, and isolation is in place before pressurizing.
What is the minimum hold time for a hydrostatic leak test on a high-pressure steam system per ASME B31.1?
Answer: 10 minutes
ASME B31.1 requires a minimum hold time of 10 minutes at the test pressure before inspection begins.
During a visual weld inspection, what condition in a fillet weld would require immediate rejection?
Answer: Undercut exceeding 1/32 inch
Undercut exceeding 1/32 inch weakens the base metal at the weld toe and is a rejectable condition per AWS and ASME standards.
What does MTR stand for in piping quality control?
Answer: Material Test Report
MTR stands for Material Test Report, which certifies the chemical composition and mechanical properties of piping materials.
A pipe spool is found to have a heat number that does not match its MTR. What is the correct action?
Answer: Quarantine and notify the QC manager
Unverified material must be quarantined and reported to QC management to maintain full material traceability.
Which NDE method is best suited for detecting subsurface cracks in a carbon steel weld?
Answer: Radiographic testing (RT)
Radiographic testing (RT) uses X-rays or gamma rays to detect internal and subsurface weld discontinuities.
What is the purpose of a weld map in a QC package?
Answer: To identify the location and welder ID for each weld
A weld map cross-references each weld joint to the welder who performed it, enabling traceability for inspection and repair.