MODULE 3 – PROPERTIES, CHARACTERISTICS AND SAFE HANDLING OF NATURAL GAS AND PROPANE

MODULE 3 – PROPERTIES, CHARACTERISTICS AND
SAFE HANDLING OF NATURAL GAS AND PROPANE

Natural Gas Distribution System - 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? - 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 - ANSWER Older areas - 7" to 14" wc
Residential and commercial- 2 to 60 psig
Industrial - 60 to 125 psig

Propane Distribution System - 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? - ANSWER Ethyl
mercaptan for odour detection

Expansion Factor of Natural Gas and Propane - ANSWER Natural Gas: 1 to
600 times
Propane: 1 to 270 times

Air to Fuel Ratio of Natural Gas and Propane - ANSWER Natural Gas: 10 to 1
Propane: 23.5 to 1

Flame Speed of Natural Gas and Propane - ANSWER Natural Gas: 12" per
second
Propane: 32" per second

What three components are necessary for combustion? - ANSWER Air, fuel
(natural gas or propane), and ignition (heat)

What four properties factor into the combustion process? - ANSWER 1.
Approximate ignition temperature