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
According to API 510, what is a key safety consideration when conducting post-weld heat treatment (PWHT) on a pressure vessel in the field during an inspection-driven repair?
Answer: Adjacent equipment must be protected from heat, and personnel must be kept clear of the heated zone and related electrical hazards
Field PWHT involves high temperatures, electrical resistance heating, and combustion equipment that require protection of adjacent equipment and exclusion of personnel from the heated area.
When an API 510 inspector identifies a pressure vessel operating above its MAWP due to an incorrect pressure relief valve (PRV) set point, what is the required safety action?
Answer: Notify the owner/operator immediately to reduce operating pressure or remove the vessel from service
Operation above MAWP is an immediate safety hazard; the inspector must notify the owner/operator immediately to take corrective action.
What specific safety precaution is required before using an electromagnetic examination technique (e.g., ACFM or EMAT) on a vessel that may still contain explosive vapors?
Answer: Verify the vessel atmosphere is tested and confirmed non-flammable before using any electrically powered equipment
Electrically powered inspection equipment can generate sparks or static; the vessel atmosphere must be confirmed non-flammable before use of any electrical equipment.
Which API 510 safety principle governs the decision to perform an on-stream inspection versus a shutdown internal inspection?
Answer: On-stream inspection is acceptable when it provides equivalent data to internal inspection and safe access can be maintained
API 510 allows on-stream inspection substitution only when it yields equivalent data to internal inspection and safe external access is feasible.
An inspector observes a small but visible active leak from a corroded area of a pressure vessel shell during an external inspection. What is the correct safety protocol?
Answer: Establish a safe distance, notify operations, and initiate emergency procedures per facility protocol
An active leak from a corroded shell represents imminent failure risk; the inspector must immediately withdraw and notify operations to trigger emergency response.
What safety documentation must an API 510 inspector review before beginning any inspection activity on a pressure vessel handling toxic chemicals above OSHA's permissible exposure limits (PELs)?
Answer: Safety Data Sheets (SDS) for all chemicals that have been in or adjacent to the vessel
SDS documents provide critical hazard information—health effects, exposure limits, PPE requirements, and emergency procedures—needed to plan safe inspection activities.
Under API 510, what is the safety implication of discovering that a pressure vessel's actual wall thickness has fallen below the minimum required thickness (t_min)?
Answer: The vessel must be immediately removed from service, repaired, or de-rated until it meets minimum thickness requirements
A vessel with wall thickness below t_min cannot safely contain its rated pressure and must be removed from service, repaired, or de-rated per API 510.