Heat Pump Technology Chapter 2 safety

Always use a pressure regulator when working with ____.

All of the above.

Before operating a power tool, ____.

All of the above.

Based on ASHRAE Standard 34, which refrigerant classification would indicate least toxicity?

Class A1

When referring to the correct usage of a fire extinguisher, the letters P.A.S.S. stand for ____.

D. pull, aim, squeeze, and sweep

A hard hat can be worn with the bill facing forward or backward.

False

A ladder can be placed on a scaffold as long as the scaffold wheels are locked.

False

A stationary refrigerant detector indicates when refrigerant is moving too slowly in a system.

False

In an emergency situation, any type of fire extinguisher can be used on any type of fire.

False

Keys used for electrical lockout must be kept near the lockout device so any worker can unlock the device in an emergency.

False

Tagout is the practice of securing an electrical switch in an open position so a circuit cannot be energized while work is being performed.

False

You can safely use water to extinguish an electrical fire.

False

Electrical shock occurs when ____.

a body becomes part of an electrical circuit

The Globally Harmonized System (GHS) includes the following standard label elements except ____.

foreign language translations

Store and transport refrigerant cylinders ____.

in a vertical position with the valve up

The primary hazard in a confined space is ____.

limited airflow

When positioning an extension ladder, the base can be no farther from the wall than ____ the supported height.

one quarter

When using a torch near combustible materials, always ____.

place a heat shield between the torch flame and the materials

OSHA's Hazard Communication Standard (HCS) requires manufacturers and distributors to provide ____ for the chemicals they supply.

safety data sheets (SDS)

Heat-related illness may produce the following signs except ____.

shivering

Asbestos insulation, which may be found in old installations, contains fibers that can cause cancer if inhaled.

true

Facial hair can make a dust mask or respirator ineffective due to poor sealing.

true

OSHA is the national law that covers workplace safety.

true

Respirators require periodic flow testing.

true

Safety glasses or other eye protection should be worn when performing any work.

true

When a fusible plug in a cylinder melts, all of the refrigerant is released from the cylinder.

true

Working in hot temperatures can cause your body to overheat.

true