Safety Procedures Flashcards
7 cards from real API 510 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safety Procedures flashcards as text
Under API 510, what action should an inspector take if, during an internal inspection, continuous gas monitoring suddenly alarms for oxygen-deficient atmosphere?
Answer: Immediately exit the vessel and do not re-enter until the hazard is identified and corrected
An alarm indicating oxygen-deficient atmosphere is an immediately dangerous condition; the inspector must evacuate the confined space immediately.
Which respiratory protection is appropriate for an API 510 inspector entering a vessel with an unknown atmospheric composition?
Answer: Self-contained breathing apparatus (SCBA) or supplied-air respirator until atmosphere is verified safe
When the atmosphere is unknown, supplied-air or SCBA equipment must be used because air-purifying respirators cannot protect against unknown or oxygen-deficient atmospheres.
API 510 inspectors working at elevated locations on pressure vessel external surfaces must comply with fall protection requirements at what height threshold per OSHA general industry standards?
Answer: Four feet above a lower working level
OSHA 29 CFR 1910 Subpart D requires fall protection in general industry at heights of four feet or more above the lower level.
Before conducting radiographic testing (RT) on a pressure vessel during an API 510 inspection, what safety measure is mandatory?
Answer: Establishing a radiation exclusion zone and posting appropriate warning signs
Radiation safety requires establishing and barricading an exclusion zone, posting warning signs, and ensuring all personnel are clear before RT exposure.
During an API 510 external visual inspection, an inspector notices a steam leak at a flange near the inspection area. What is the correct immediate response?
Answer: Stop work, move to a safe distance, and report the leak to operations immediately
Pressurized steam leaks are immediately dangerous; the inspector must withdraw to a safe distance and report to operations so the hazard can be controlled before work continues.
What is the primary purpose of a vessel blinding (blinding off) procedure in the context of API 510 inspection safety?
Answer: To physically prevent hazardous process fluids from entering the vessel during inspection
Blinds (spectacle blinds or blank flanges) physically isolate the vessel from connected piping so process fluids cannot enter while personnel are inside.
Which of the following is a key safety requirement when using ultrasonic thickness (UT) measurement equipment on vessels containing pyrophoric scale?
Answer: Wet the scale with water before disturbance to prevent spontaneous ignition upon air exposure
Pyrophoric materials ignite spontaneously when exposed to air; wetting the scale prevents ignition during mechanical disturbance required for UT scanning.