Steamfitter Safety Regulations and Compliance 2 — Questions and Answers
Question 1: Under OSHA 29 CFR 1910.147, what is the minimum energy control procedure requirement before servicing pressurized piping systems?
- Post a warning sign only
- Lockout/tagout all energy sources (Correct answer)
- Notify the supervisor verbally
- Reduce pressure to 50% of working pressure
Correct answer: Lockout/tagout all energy sources
OSHA's Control of Hazardous Energy standard (29 CFR 1910.147) requires lockout/tagout of all energy sources before servicing pressurized systems.
Question 2: Which ASME standard governs the fabrication and inspection of boilers and pressure vessels used in steamfitting work?
- ASME B31.1
- ASME BPVC Section I (Correct answer)
- ASME B16.5
- ASME A13.1
Correct answer: ASME BPVC Section I
The ASME Boiler and Pressure Vessel Code (BPVC) Section I covers power boilers and is the primary fabrication standard for steam pressure vessels.
Question 3: A steamfitter notices a steam trap continuously blowing live steam to atmosphere. What is the immediate safety concern?
- Reduced system efficiency only
- Scalding hazard and energy waste (Correct answer)
- Pipe corrosion from condensate
- Pressure fluctuation in the system
Correct answer: Scalding hazard and energy waste
Live steam discharged to atmosphere creates an immediate scalding hazard to workers and also represents significant energy waste.
Question 4: Per OSHA 1910.132, what must an employer do before selecting PPE for workers exposed to steam hazards?
- Purchase the most expensive PPE available
- Conduct a workplace hazard assessment (Correct answer)
- Allow workers to choose their own PPE
- Consult only the PPE manufacturer
Correct answer: Conduct a workplace hazard assessment
OSHA 1910.132 requires employers to perform a hazard assessment of the workplace to determine what PPE is necessary before selection.
Question 5: What does the term 'MAWP' stand for, and why is it critical for steamfitter safety compliance?
- Maximum Allowable Working Pressure — it sets the safe operating limit (Correct answer)
- Minimum Acceptable Water Pressure — it sets the fill requirement
- Maximum Anticipated Water Pressure — it triggers relief valve sizing
- Measured Allowable Welding Parameters — it governs weld quality
Correct answer: Maximum Allowable Working Pressure — it sets the safe operating limit
MAWP (Maximum Allowable Working Pressure) defines the highest pressure at which a vessel or system may be safely operated per code.
Question 6: Which regulation requires steamfitters working in confined spaces to have an attendant stationed outside the space?
- OSHA 29 CFR 1910.119
- OSHA 29 CFR 1910.146 (Correct answer)
- NFPA 31
- ASME B31.9
Correct answer: OSHA 29 CFR 1910.146
OSHA 29 CFR 1910.146 (Permit-Required Confined Spaces) mandates that an attendant remain outside to monitor entrants and initiate rescue if needed.
Question 7: When performing a hydrostatic pressure test on a new steam piping system, to what multiple of the design pressure is the test typically conducted per ASME B31.1?
- 1.0 times design pressure
- 1.5 times design pressure (Correct answer)
- 2.0 times design pressure
- 3.0 times design pressure
Correct answer: 1.5 times design pressure
ASME B31.1 requires hydrostatic leak tests at a minimum of 1.5 times the system design pressure to verify integrity without overstressing components.
Steamfitter Safety Regulations and Compliance 2
Under OSHA 29 CFR 1910.147, what is the minimum energy control procedure requirement before servicing pressurized piping systems?