ACR-101 Unit 4 Homework 1 (CRF)

Front

Which of the following can happen to a full nitrogen cylinder when the top is broken off?
Options:
Nitrogen will slowly leak out.
There will be a loud bang.
The tank will act like a rocket and move very fast.
It will make a sound like a washing machine.

Back

The tank will act like a rocket and move very fast.

Front

Extension ladders used to gain access to roof-top locations should extend ____ feet above the roof.

Back

3

Front

The OSHA-approved tanks used to recover refrigerant are color-coded with a gray body and a yellow top.

Back

True

Front

ASHRAE Standard 34 uses the letters "A" and "B" to indicate refrigerant toxicity and numbers 1, 2, and 3 to indicate its _______.

Back

flammability

Front

There are two subclasses of ASHRAE Standard 34, A2L and B2L. The capital "L" is used to indicate _______.

Back

lower flammability

Front

Refrigerant and oil in a system that has had a compressor motor burn out can be hazardous because they may contain acid. True or False?

Back

True

Front

Refrigerant vapors that have passed through an open flame or that have been heated during the brazing or soldering process will _______.

Back

have a strong odor and become toxic and harmful

Front

When brazing near wood, a _______ can be used to reduce the flammability of the wood.

Back

fire-resistant spray

Front

Which of the following statements is correct when referring to buying refrigerant or nitrogen tanks?
- Safety goggles or glasses must be worn when moving the tank.
- Large tanks should not be carried, they should be secured to an approved cart.
- The protective cap must be on when the tank is not in use.

Back

All are correct.

Front

A fusible plug is a metal fitting that has a hole drilled through it and the hole is filled with __________.

Back

material with a low melting point