RMGA Emergency Response Procedures 2

Question 1

What concentration of natural gas in air (expressed as % LEL) typically triggers evacuation procedures?

Accepted Answer

25% LEL

Answer

1% LEL

Answer

10% LEL

Answer

50% LEL

Question 2

What agency must a natural gas operator notify if a gas incident causes a death or injury requiring hospitalization?

Accepted Answer

PHMSA National Response Center

Answer

OSHA only

Answer

State Department of Commerce

Answer

Federal Energy Regulatory Commission

Question 3

What is 'backfilling and compaction' important for after a gas main repair?

Accepted Answer

Restoring original soil conditions to protect the pipe and prevent future settlement

Answer

Removing excess gas from the repair area

Answer

Documenting the repair in the GIS system

Answer

Calibrating the pressure regulator after restarting service

Question 4

Who is typically responsible for shutting off gas service during a structure fire when the fire department requests it?

Accepted Answer

The gas utility upon request from fire department or emergency responders

Answer

The homeowner only

Answer

The building contractor

Answer

The local gas appliance dealer

Question 5

What is the purpose of 'purging with inert gas' before restarting a gas main?

Accepted Answer

To displace oxygen from the piping before introducing flammable gas, preventing a combustible mixture

Answer

To add odorant to the gas before customer delivery

Answer

To test pressure integrity of the repaired section

Answer

To clean residual dirt from the pipe interior

Question 6

What information must a gas operator collect when responding to a public report of a gas odor?

Accepted Answer

Location, time, description of odor, and whether anyone is inside the affected structure

Answer

Customer's monthly gas bill amount

Answer

Customer's social security number

Answer

Nearest intersection only