Ch. 2

Occupational Safety and Health Act (OSHA)

A US national code that covers workplace safety for workers and equipment.

safety data sheet (SDS)

A document in a uniform format that includes section numbers, headings, and associated information to communicate the hazards of hazardous chemical products, as required by OSHA's Hazard Communication Standard (HCS).

air-purifying respirator

A passive respirator that removes dust and certain chemicals from the air.

hazard

A potential for harm. According to OSHA, hazard is "associated with a condition or activity that, if left uncontrolled, can result in an injury or illness."

Stationary refrigerant detector

A refrigerant detector in a fixed location that will note an increase of refrigerant vapors or gases in advance of dangerous levels. These may be installed in a mechanical room or use multiple sensors throughout a facility that communicate with a central unit

supplied-air respirator

A respirator that provides supplemental oxygen.

signal word

A specific word used to emphasize hazards and indicate the relative level of severity of the hazard assigned to a GHS hazard class and category.

hazard statement

A standard phrase assigned to a hazard class and category that describes the nature of the hazard.

hazard pictogram

A symbol used to convey health, physical, and environmental hazard information.

Globally Harmonized System (GHS)

A system for standardizing and harmonizing the classification and labeling of all chemicals.

ASHRAE Standard 34

An ASHRAE standard that names refrigerants and assigns safety classifications according to their flammability and toxicity.

Hazard Communication Standard (HCS)

An OSHA standard that requires chemical manufacturers, distributors, or importers to provide safety data sheets (SDS) to communicate the hazards of hazardous chemical products.

confined space

An area that is closed off from a larger space and is large enough for a person to enter and perform work therein.

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

Class A1

personal protective equipment (PPE)

Safety equipment worn by a technician to minimize exposure to health and physical hazards. Examples include gloves, hard hats, goggles, and respirators.

lockout/tagout (LOTO)

The combination of locking out and tagging out, in which a mechanism or an electrical switch is locked open and a tag is placed on it to inform others that service work is in process and that this mechanism or switch's position should not be changed.

lockout (LO)

The practice of locking a mechanism or an electrical switch in the open position so that maintenance or service work can be performed safely.

electrical shock occurs when

a body becomes part of an electrical circuit

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

one-quarter

Always use a pressure regulator when working with

all of the above

before operating a power tool

all of the above

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

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

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

false

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

false

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

false

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

false

you can safely use water to extinguish an electrical fire

false

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

foreign language translation

Store and transport refrigerant cylinders

in a vertical position with the valve up

the primary hazard in a confined space is

limited airflow

when using a torch near combustible materials., always

place a heat shield between the torch flame and the materials

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

pull, aim, squeeze, sweep

Heat related illnesses produce the following signs except

shivering

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

true

OSHA is the national law that covers workplace safety

true

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

true

respirators require periodic flow testing

true

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

true

working in hot temperatures can cause your body to overheat

true