CNG Codes, Standards, and Compliance 3

Question 1

Under 49 CFR Part 192, who has primary regulatory authority over natural gas pipeline safety leading up to a CNG fueling station?

Accepted Answer

PHMSA

Answer

PHMSA (Pipeline and Hazardous Materials Safety Administration) regulates natural gas pipeline safety under 49 CFR Part 192.

Question 2

Which SAE standard covers the CNG vehicle receptacle (fueling connection) used in North America?

Accepted Answer

SAE J1616

Answer

SAE J1616 specifies the recommended practice for compressed natural gas vehicle fueling connection devices.

Question 3

An operator discovers a CNG dispenser hose with visible outer jacket damage. Under NFPA 52, the correct action is to:

Accepted Answer

Tag it out of service and replace it immediately

Answer

NFPA 52 requires that damaged fueling hoses be immediately removed from service to prevent a hazardous failure.

Question 4

What is the minimum separation distance NFPA 52 requires between a CNG fueling island and a property line?

Accepted Answer

10 feet

Answer

NFPA 52 requires a minimum 10-foot separation between CNG fueling islands and property lines or adjacent structures.

Question 5

Under EPA regulations, which CNG fueling stations must conduct a risk management plan (RMP)?

Accepted Answer

Stations exceeding the Clean Air Act Section 112(r) threshold quantity for flammable gases

Answer

EPA's RMP rule (40 CFR Part 68) applies to facilities that hold regulated substances above threshold quantities per Clean Air Act Section 112(r).

(CNG) Compressed Natural Gas Practice Test