WPR Work Permit Types & Scope 1 — Questions and Answers
Question 1: Which type of work permit is required before performing welding, cutting, or grinding near flammable materials?
- Cold work permit
- Hot work permit (Correct answer)
- Confined space entry permit
- Electrical isolation permit
Correct answer: Hot work permit
Hot work permits are required for any task that introduces ignition sources (sparks, flames, heat) into areas where flammable or combustible materials may be present.
Question 2: A cold work permit is distinguished from a hot work permit because:
- Cold work is performed in cold weather only
- Cold work does not introduce ignition sources and involves only non-sparking, non-flaming activities (Correct answer)
- Cold work requires no PPE
- Cold work permits expire faster than hot work permits
Correct answer: Cold work does not introduce ignition sources and involves only non-sparking, non-flaming activities
Cold work permits cover non-ignition tasks such as mechanical disassembly, painting with non-flammable materials, or structural inspections.
Question 3: An excavation permit is required when digging to what depth in most US industrial and construction sites per OSHA standards?
- Any depth
- 5 feet or more, or any depth when a worker enters the excavation (Correct answer)
- 10 feet or more only
- 3 feet or more
Correct answer: 5 feet or more, or any depth when a worker enters the excavation
OSHA 29 CFR 1926.650 triggers cave-in protection (and typically an excavation permit) for excavations 5 feet or deeper, or any depth where a worker enters.
Question 4: An electrical work permit (lockout/tagout) is governed primarily by which OSHA standard?
- 29 CFR 1910.146
- 29 CFR 1910.147 (Correct answer)
- 29 CFR 1910.119
- 29 CFR 1926.502
Correct answer: 29 CFR 1910.147
OSHA 29 CFR 1910.147 (Control of Hazardous Energy) governs lockout/tagout procedures for electrical and other energy isolation.
Question 5: Which type of permit is required for work on pressurized piping systems that could release hazardous energy?
- Hot work permit
- Line break permit or pressure release permit (Correct answer)
- Excavation permit
- Height work permit
Correct answer: Line break permit or pressure release permit
Line break or pressure release permits address the hazards of releasing stored energy (pressure, temperature, hazardous fluids) when opening piping systems.
Question 6: A radiation work permit (RWP) is required because:
- All industrial work environments emit radiation
- Work in or near radiation fields requires special controls to limit worker dose to ALARA (As Low As Reasonably Achievable) levels (Correct answer)
- Radiation PPE is always the same regardless of source
- Radiation hazards are only present in nuclear power plants
Correct answer: Work in or near radiation fields requires special controls to limit worker dose to ALARA (As Low As Reasonably Achievable) levels
RWPs identify radiation sources, dose rates, required shielding, dosimetry requirements, and access restrictions to protect workers from radiation exposure.
WPR Work Permit Types & Scope 1
Which type of work permit is required before performing welding, cutting, or grinding near flammable materials?