Exam Practice Questions And Correct

Gas Utility Technician Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of a gas utility technician?
• Repair household appliances
• Install electrical wiring
• Maintain and operate natural gas distribution systems
• Inspect water pipelines

Rationale: Gas utility technicians are trained to safely operate and

maintain gas distribution infrastructure to ensure safe delivery.

• Which type of gas is most commonly used in residential gas

distribution systems?

• Propane 1 / 4

• Hydrogen
• Natural gas (methane)
• Carbon monoxide

Rationale: Natural gas, primarily methane, is the standard fuel for

residential and commercial gas systems.

• What is the primary hazard associated with natural gas?
• Corrosion
• Electrical shock
• Explosion and fire
• Biological contamination

Rationale: Natural gas is highly flammable and can cause explosions if not

handled properly.

• Before beginning work on a gas line, what is the first step a technician

should take?

• Turn off water supply
• Verify gas is shut off and ensure proper safety procedures
• Call the homeowner
• Start excavation immediately

Rationale: Safety protocols require confirming the gas supply is isolated

before any work.

• What is the purpose of a gas regulator?
• To filter impurities 2 / 4

• To control pressure in the gas distribution system
• To detect leaks
• To ignite gas

Rationale: Gas regulators ensure gas is delivered at safe, usable pressures

to appliances and pipelines.

• Which personal protective equipment (PPE) is essential when working

with pressurized gas lines?

• Safety glasses only
• Steel-toed boots only
• Gloves, safety glasses, flame-resistant clothing, and hard hat
• Earplugs only

Rationale: Proper PPE protects technicians from burns, flying debris, and

pressurized gas hazards.

• Which type of pipeline corrosion occurs when soil conditions

accelerate metal deterioration?

• Galvanic corrosion
• External corrosion
• Stress corrosion
• Internal corrosion

Rationale: External corrosion is caused by environmental factors like soil

composition and moisture. 3 / 4

• What is the purpose of a cathodic protection system?
• To regulate gas pressure
• To detect leaks
• To prevent pipeline corrosion
• To mark pipeline routes

Rationale: Cathodic protection uses an electrical current to reduce metal

oxidation and prevent corrosion.

• When performing a leak survey, which method is commonly used?
• Visual inspection only
• Soap solution or electronic gas detectors
• Temperature measurement
• Pressure testing only

Rationale: Soap solution can show bubbles at leaks, and electronic

detectors can sense gas concentrations.

• What should be done if a gas leak is detected in a building?
• Ventilate and continue work
• Seal the leak temporarily
• Evacuate immediately and notify the utility company
• Spray water on the area

Rationale: Immediate evacuation prevents potential injury or explosion,

and utility professionals must address the leak.

• / 4