Exam 4: General Safety Practices

A necessary safety practice for a technician is to lockout the panel with a padlock and keep the key with you.

Power tools that are not double insulated must have three-prong plugs to ensure that the tool is properly ____________________.

A double insulated drill ____.

It is possible that your hand would suffer frostbite if it comes in contact with liquid R-22 when accidentally releasing refrigerant into the atmosphere (an illegal procedure).

Fires that involve ordinary materials such as paper, cardboard, and wood are classified as Type __________ fires.

An example of a pressure vessel is ____.

Which of the following statements is correct when referring to large refrigerant or nitrogen tanks?

If a large pressurized tank falls over and the stem breaks off, why shouldn't you try to stand up the tank?

When working in a machine room, safety glasses should not be worn because they can fog up and impede your eyesight.

Why should a technician not wear jewelry and metallic watches while working on a system?

When it is necessary to perform electrical work in an area that has a damp or wet floor, which of the following can be done to minimize the chance of electrical shock?

If you are a refrigeration technician, a warm coat and gloves should be in your truck, even in the middle of the summer.

Why is a regulator required on a nitrogen cylinder?

To insure proper operation of an oxygen cylinder regulator, make sure no oil residue is present.

A way to move equipment across a roof is to use rollers and ____________________ for a base.

As long as the torch is kept moving below the level of the liquid refrigerant in the cylinder so as not to create a hotspot, it is OK to heat the cylinder in this manner.

Electrical power should always be shut off at the _____ or entrance panel and locked out in an approved manner when installing equipment.

Fires that involve ordinary materials such as oil and gas are classified as Type __________ fires.

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

-An R-22 cylinder containing enough refrigerant to have liquid refrigerant in it, is in a truck with a temperature of 120°F. What would be the psig pressure in the cylinder?