HVAC

Welding or brazing

2 torches could cause the oxygen level to fall too low for safety

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

B, C

CO2 gas under pressure can be used to extinguish what class of fires

CLASS D

Fire extinguisher for combustible metals such as flammable metals like magnesium and lithium

CLASS C

Fire extinguisher for electrical equipment such as motors, switches, etc

ClASS B

Fire extinguisher for flammable liquids such as grease, gasoline, oils, and paints

CLASS A

Fire extinguisher for ordinary combustibles (wood, paper, textiles)

Ground Fault Circuit Interrupter

GFCI stands for

Hazard pictograms

GHS symbols are called

Cold or hot air

HVAC ducting and hydronic piping may contain

temperature

If pressure builds up too high in a refrigerant what rises with it

Aim

In using a fire extinguisher, the A in P.A.S.S stands for

Pull

In using a fire extinguisher, the P in P.A.S.S stands for

Squeeze

In using a fire extinguisher, the first S in P.A.S.S stands for

Sweep

In using a fire extinguisher, the second S in P.A.S.S stands for

LOTO

LOCKOUT AND TAGOUT COMBINED

True

Never braze or weld in an enclosed, non-ventilated area

T

Never heat a refrigerant cylinder with a flame

Occupational Safety and Health Act

OSHA MEANS WHAT

Hazard Communication Standard (HCS)

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

Personal Protective Equipment

PPE stands for

Parts per million

PPM stands for

gas under pressure

Refrigerant cylinders contain

Safety Data Sheet

SDS stands for

base

Spray a fire extinguisher always at the ____ of a fire

Tagout (TO)

The practice of placing a tag on a mechanism or an electrical switch to inform others that service work is in progress and that this mechanism or switch's position cannot be changed

HEPA

When cutting or remove substances run a ventilation system with a ______ filter

Heat shield

When using a torch near combustible materials, wood, finished surfaces, wires, or cabinet use a

Hazard

a potential for harm

7

an electrical arc is _ times the the temperature at the sun's surface

confined space

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

GHS

basis for OSHA'S hazard communication requirements

GFCI

fast acting circuit breaker that will shut off electric power within as little as 1/40 of a second in the event of a ground fault

CLASS 2

flammability class: Refrigerant may propagate a flame under certain conditions in open air

CLASS 3

flammability class: highly flammable

CLASS 1

flammability class: refrigerant that will bot propagate a flame under normal conditions in open air

ASHRAE Standard 34

names refrigerants and assigns safety classifications according to their flammability and toxicity

Air purifying respirators

passive respirator that remove dust and certain chemicals from the air

Hazard Statements

standard phrases assigned to a hazard class and category that describe the nature of the hazard

Globally Harmonized System (GHS)

standardized system for labeling chemicals

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

CLASS B

toxicity class: evidence of toxicity below 400ppm(higher toxicity)

CLASS A

toxicity class: no evidence of toxicity below 400ppm(lower toxicity)