NDT Safety Protocols & Compliance Regulations 4 — Questions and Answers
Question 1: API 510 'Pressure Vessel Inspection Code' requires that an Authorized Pressure Vessel Inspector (API) hold which minimum credential?
- API 510 certification (Correct answer)
- ASNT Level II in UT only
- PE license in mechanical engineering
- OSHA 30-hour card
Correct answer: API 510 certification
API 510 specifically requires that inspectors performing or overseeing code inspections hold a valid API 510 certification.
Question 2: When a boilermaker NDT technician performs ultrasonic thickness testing (UTT) near hot surfaces, what is the maximum metal surface temperature generally acceptable for standard contact transducers without special high-temperature couplants?
- Approximately 125°F (52°C) (Correct answer)
- Approximately 400°F (204°C)
- Approximately 200°F (93°C)
- Approximately 500°F (260°C)
Correct answer: Approximately 125°F (52°C)
Standard UT transducers and couplants degrade rapidly above approximately 125°F; high-temperature couplants and delay-line transducers are needed for hotter surfaces.
Question 3: Which regulation requires employers to provide and maintain personal protective equipment (PPE) at no cost to workers performing NDT on boilers?
- OSHA 29 CFR 1910.132 (Correct answer)
- ASME Section V
- API 510
- NFPA 70E
Correct answer: OSHA 29 CFR 1910.132
OSHA 29 CFR 1910.132 requires employers to assess hazards, provide appropriate PPE, and pay for required PPE at no cost to employees.
Question 4: A boiler has been taken out of service and purged but an oxygen reading of 18% is measured inside. What action is required before entry?
- Continue ventilation until oxygen reaches 19.5–23.5% and reassess (Correct answer)
- Enter immediately since oxygen is near normal levels
- Enter with a dust mask only since combustibles are absent
- Seal the boiler and call for emergency rescue
Correct answer: Continue ventilation until oxygen reaches 19.5–23.5% and reassess
OSHA defines oxygen-deficient atmospheres as below 19.5%; continuous ventilation and re-testing are required before safe entry is permitted.
Question 5: What does the 'buddy system' requirement in confined space entry regulations for boiler inspections primarily protect against?
- Incapacitation of the entrant without a rescuer able to respond (Correct answer)
- Equipment theft during inspections
- Unauthorized personnel entering the space
- Communication failures with the control room
Correct answer: Incapacitation of the entrant without a rescuer able to respond
The buddy/attendant system ensures someone outside the space can monitor the entrant and initiate rescue if the entrant is incapacitated by hazards.
Question 6: Which NFPA standard addresses electrical safety requirements for boilermaker NDT technicians using powered test equipment?
- NFPA 70E (Correct answer)
- NFPA 101
- NFPA 13
- NFPA 30
Correct answer: NFPA 70E
NFPA 70E establishes electrical safety requirements for workers including arc flash boundaries, PPE selection, and safe work practices with energized equipment.
Question 7: Under OSHA HazCom (29 CFR 1910.1200), what must an NDT technician review before using a new chemical penetrant or developer product?
- The Safety Data Sheet (SDS) for the product (Correct answer)
- The manufacturer's marketing brochure
- A supervisor's verbal briefing only
- The product's color code on the container label
Correct answer: The Safety Data Sheet (SDS) for the product
HazCom requires workers to consult the SDS, which contains hazard identification, safe handling, and emergency response information for each chemical.
NDT Safety Protocols & Compliance Regulations 4
API 510 'Pressure Vessel Inspection Code' requires that an Authorized Pressure Vessel Inspector (API) hold which minimum credential?