PHMSA Master Meter System Compliance Inspection
Exam Practice Test | Questions and Answers [Verified
Answers] Plus Rationales | Latest 2026/2027 | Qs & Ans
1. What is a master meter system?
A. A residential water system
B. A private electrical grid
C. A pipeline system that distributes gas to multiple customers through
a single meter
D. A wastewater collection system
Rationale: Master meter systems receive gas through one meter and
distribute it to downstream users.
2. Which agency regulates master meter gas system safety?
A. OSHA
B. EPA
C. PHMSA
D. FEMA
Rationale: PHMSA establishes federal pipeline safety regulations for gas
systems.
3. What is the primary purpose of compliance inspections?
A. Increase paperwork
B. Reduce accountability
C. Verify adherence to pipeline safety regulations
D. Eliminate maintenance activities
,Rationale: Compliance inspections ensure operators follow safety
requirements.
4. Which regulation commonly governs gas distribution systems?
A. 49 CFR Part 40
B. 49 CFR Part 390
C. 49 CFR Part 192
D. 49 CFR Part 71
Rationale: Part 192 establishes minimum federal safety standards for
gas pipelines.
5. Why are leak surveys important in master meter systems?
A. Increase operating pressure
B. Eliminate maintenance
C. Identify gas leaks before they become hazardous
D. Reduce inspections
Rationale: Leak surveys help prevent explosions, fires, and gas loss.
6. Which condition may indicate a gas leak?
A. Proper pressure readings
B. Organized records
C. Smell of gas or dead vegetation near pipelines
D. Stable operations
Rationale: Escaping gas may produce odors or affect vegetation growth.
7. What is the purpose of odorization in natural gas systems?
, A. Increase gas pressure
B. Improve pipeline appearance
C. Provide detectable warning of gas leaks
D. Eliminate inspections
Rationale: Odorants help people detect gas leaks quickly.
8. Which document outlines emergency response procedures?
A. Payroll ledger
B. Vacation schedule
C. Emergency response plan
D. Marketing brochure
Rationale: Emergency plans define actions during incidents.
9. Why is corrosion control important in master meter systems?
A. Increase maintenance costs
B. Reduce accountability
C. Prevent pipeline deterioration and leaks
D. Eliminate inspections
Rationale: Corrosion weakens pipelines and increases failure risk.
10. Which inspection method detects underground gas leaks?
A. Payroll analysis
B. Office inventory review
C. Leak detection survey equipment
D. Social media monitoring
Rationale: Specialized leak detection equipment identifies escaping gas.
Exam Practice Test | Questions and Answers [Verified
Answers] Plus Rationales | Latest 2026/2027 | Qs & Ans
1. What is a master meter system?
A. A residential water system
B. A private electrical grid
C. A pipeline system that distributes gas to multiple customers through
a single meter
D. A wastewater collection system
Rationale: Master meter systems receive gas through one meter and
distribute it to downstream users.
2. Which agency regulates master meter gas system safety?
A. OSHA
B. EPA
C. PHMSA
D. FEMA
Rationale: PHMSA establishes federal pipeline safety regulations for gas
systems.
3. What is the primary purpose of compliance inspections?
A. Increase paperwork
B. Reduce accountability
C. Verify adherence to pipeline safety regulations
D. Eliminate maintenance activities
,Rationale: Compliance inspections ensure operators follow safety
requirements.
4. Which regulation commonly governs gas distribution systems?
A. 49 CFR Part 40
B. 49 CFR Part 390
C. 49 CFR Part 192
D. 49 CFR Part 71
Rationale: Part 192 establishes minimum federal safety standards for
gas pipelines.
5. Why are leak surveys important in master meter systems?
A. Increase operating pressure
B. Eliminate maintenance
C. Identify gas leaks before they become hazardous
D. Reduce inspections
Rationale: Leak surveys help prevent explosions, fires, and gas loss.
6. Which condition may indicate a gas leak?
A. Proper pressure readings
B. Organized records
C. Smell of gas or dead vegetation near pipelines
D. Stable operations
Rationale: Escaping gas may produce odors or affect vegetation growth.
7. What is the purpose of odorization in natural gas systems?
, A. Increase gas pressure
B. Improve pipeline appearance
C. Provide detectable warning of gas leaks
D. Eliminate inspections
Rationale: Odorants help people detect gas leaks quickly.
8. Which document outlines emergency response procedures?
A. Payroll ledger
B. Vacation schedule
C. Emergency response plan
D. Marketing brochure
Rationale: Emergency plans define actions during incidents.
9. Why is corrosion control important in master meter systems?
A. Increase maintenance costs
B. Reduce accountability
C. Prevent pipeline deterioration and leaks
D. Eliminate inspections
Rationale: Corrosion weakens pipelines and increases failure risk.
10. Which inspection method detects underground gas leaks?
A. Payroll analysis
B. Office inventory review
C. Leak detection survey equipment
D. Social media monitoring
Rationale: Specialized leak detection equipment identifies escaping gas.
