Rec-101 Propane Level 1 Module 1

Propane, as extracted,

• smells like burnt rubber

• is a light blue liquid

• has a sweet smell and is milky white

• is odorless and colorless

The device that is used on a propane tank to reduce pressure is called a

• limit switch

• pressure tank

• regulator

• ball valve

The boiling point for propane is

• -76F (-60C)

• -44F (-42C)

• 25F (-4C)

• -60F(16C)

A property of propane is that when heated, it

• expands

• looks like crude oil

• turns dark green

• evaporates

According to the following table, approximately how many Btu/hr is a 7.2 US gal (27.252 L) DOT/TC cylinder?

• 228,750

• 439,210

• 658,814

• 841,818

A 20-lb (9.1 kg) DOT/TC cylinder is 60 % full at -5 o F (-21oC). What is the approximate Btu/hr vaporization rate per hour?

• 8,500

• 12,750

• 18,000

• 36,000

When an element or compound changes from the liquid phase to a vapor, it is called

• boiling

• thermal energy

• dew point

• vaporization

When working with propane systems, the most important factor to consider is

• time

• efficiency

• safety

• cost

Propane is flammable, can explode with pressure, and is able to

• freeze skin

• corrode metal containers

• create a strong, foul smell

• chemically burn through leather gloves

It is important to wear gloves when using propane because it can

• cause swelling

• discolor the skin a reddish-brown color

• make hands smell like rotten eggs

• freeze the skin