Safe Handling of Natural Gas and Propane
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Natural Gas Distribution System - CORRECT ANSWER - Gas Well - Processing Plant -
Compressor Station - City Gate Station - Residential, Commercial, or Industrial
What three things occur at the City Gate Station for Natural Gas? - CORRECT
ANSWER - 1. Gas pressure reduction for local distribution
2. Butyl mercaptan for odour detection
3. Subterranean cavern storage for low demand
Local Natural Gas Pressures - CORRECT ANSWER - Older areas - 7" to 14" wc
Residential and commercial- 2 to 60 psig
Industrial - 60 to 125 psig
Propane Distribution System - CORRECT ANSWER - Liquefied at wellhead processing
plant - high pressure in containers to distributors - delivery trucks for filling customers propane
tanks, tanks and cylinders, or small cylinders
What occurs at the wellhead processing plant for Propane? - CORRECT ANSWER - Ethyl
mercaptan for odour detection
Expansion Factor of Natural Gas and Propane - CORRECT ANSWER - Natural Gas: 1 to
600 times
Propane: 1 to 270 times