GPT Safety Procedures & PPE 3 — Questions and Answers
Question 1: Which ANSI/ISEA standard governs the selection of high-visibility safety apparel for gas technicians working near roadways?
- ANSI/ISEA 105
- ANSI/ISEA 107 (Correct answer)
- ANSI Z87.1
- ANSI Z89.1
Correct answer: ANSI/ISEA 107
ANSI/ISEA 107 establishes performance requirements for high-visibility safety apparel, including vests worn near traffic.
Question 2: A gas technician must enter an excavation deeper than 5 feet. Under OSHA 29 CFR 1926, what protective system is typically required?
- Hard hat and safety glasses only
- Sloping, shoring, or trench box system (Correct answer)
- Confined space permit only
- Atmospheric testing only
Correct answer: Sloping, shoring, or trench box system
OSHA requires a protective system such as sloping, shoring, or a trench box for excavations 5 feet or deeper to prevent cave-in.
Question 3: What type of footwear is required when operating pipe threading machines or working with heavy pipe sections?
- Non-slip athletic shoes
- Steel-toed safety boots meeting ASTM F2413 (Correct answer)
- Rubber boots only
- Any closed-toe work boot
Correct answer: Steel-toed safety boots meeting ASTM F2413
ASTM F2413-compliant steel-toed boots protect against compression and impact injuries from heavy pipe sections and machinery.
Question 4: Before cutting into an existing gas line during a repair, what safety step must be performed AFTER isolating the line?
- Apply thread sealant to the cut area
- Purge the line with nitrogen or air and verify zero gas with a detector (Correct answer)
- Immediately begin cutting with a pipe cutter
- Paint the pipe section orange
Correct answer: Purge the line with nitrogen or air and verify zero gas with a detector
After isolation, the line must be purged to remove residual gas and verified clear with a combustible gas detector before any cutting begins.
Question 5: What is the minimum eye protection requirement when cutting or threading steel gas pipe?
- No eye protection required if a face shield is nearby
- Safety glasses with side shields meeting ANSI Z87.1 (Correct answer)
- Tinted goggles for UV protection
- Standard prescription glasses are sufficient
Correct answer: Safety glasses with side shields meeting ANSI Z87.1
ANSI Z87.1-rated safety glasses with side shields protect against metal chips and debris generated during cutting and threading operations.
Question 6: A technician smells gas while working underground in a utility vault. What immediate action should they take regarding ventilation equipment?
- Turn on any available electric fans to clear the gas
- Use only intrinsically safe or explosion-proof ventilation equipment (Correct answer)
- Open the vault cover and wait for natural ventilation
- Use a propane torch to burn off the gas safely
Correct answer: Use only intrinsically safe or explosion-proof ventilation equipment
Only intrinsically safe or explosion-proof equipment may be used in gas-present atmospheres to avoid creating an ignition source.
Question 7: When performing a pressure test on a new gas installation, what PPE is essential to protect against potential joint failure?
- Only a hard hat is needed
- Face shield, safety glasses, and gloves (Correct answer)
- Hearing protection only
- Chemical splash goggles only
Correct answer: Face shield, safety glasses, and gloves
A face shield combined with safety glasses and gloves protects against high-pressure gas or debris if a fitting fails during pressure testing.
GPT Safety Procedures & PPE 3
Which ANSI/ISEA standard governs the selection of high-visibility safety apparel for gas technicians working near roadways?