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AIR 252-001W - Quiz #1 - Units 3, 22, 32, & 48

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Quiz #1 - Units 3, 22, 32, & 48
Neil Revollo
Quiz by Neil Revollo, updated more than 1 year ago
Neil Revollo
Created by Neil Revollo over 7 years ago
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Resource summary

Question 1

Question
Why are all HVACR tradesmen advised to enroll in an approved safety-training program?
Answer
  • Quick and proper treatment of injuries can result in less pain and possibly save lives.
  • It is required by OSHA.
  • It is required by ANSI.
  • It is required by law for all tradesmen that belong to a union.

Question 2

Question
Who is primarily responsible for the technician's safety?
Answer
  • The employer to ensure that all employees be familiar with safety data concerning hazardous materials.
  • OSHA to familiarize employees with safety data concerning hazardous materials.
  • The employee to familiarize himself/herself with safety information regarding the workplace.
  • The state to ensure that all employees in the workplace are familiar with safety data concerning hazardous materials.

Question 3

Question
While materials that contain asbestos are processed, shaped, or cut:
Answer
  • An exhaust blower system using a 7% efficient filter must be operating.
  • An exhaust blower system using a 5% efficient filter must be operating.
  • An exhaust blower system using a 50% efficient filter must be operating.
  • An exhaust blower system using a HEPA filter must be operating.

Question 4

Question
Safety protection should be worn:
Answer
  • When working with liquids, vapors, or solid objects that are extremely hot or cold.
  • When working with power tools.
  • At all times when performing any work that requires PPE.
  • When handling refrigerant cylinders.

Question 5

Question
How should accidents be reported to the company office?
Answer
  • An accident report form should be filled out and turned into the company office.
  • A medical report form should be filled out and turned into the company office.
  • A progress report form should be filled out and turned into the company office.
  • A privacy report form should be filled out and turned into the company office.

Question 6

Question
How can maintaining an orderly shop be beneficial?
Answer
  • Less time is spent using required tools or materials.
  • There is more frustration when searching for required tools or materials.
  • There is less productivity when using required tools or materials.
  • Less time is wasted searching for required tools or materials.

Question 7

Question
When working in a confined space where concentrations of harmful substances are very high, why should atmosphere-supplying respirators be worn?
Answer
  • To enable asphyxiation to occur in a very short time
  • To purify air of harmful dust, mist, metal, fumes, and vapors
  • To supply clean breathing air from a compressed air source
  • To circulate odorless, tasteless, invisible refrigerants

Question 8

Question
How can you easily maintain MSDS documents?
Answer
  • Log all of the MSDSs in a computer system.
  • Alphabetize the MSDSs by active ingredient.
  • Put MSDSs in a manilla envelope within the service vehicle.
  • Throw the MSDSs in a box and put it in a closet.

Question 9

Question
When should you read the MSDS for a particular chemical product?
Answer
  • In the event of any injury causing accidents
  • After completing the job
  • Immediately after exposure to the product
  • Before using the product

Question 10

Question
How can you determine what PPE should be used with any particular chemical product?
Answer
  • Read the MSDS form for that product.
  • Call the EPA.
  • Ask the foreman.
  • Ask another worker.

Question 11

Question
Information that is required on an MSDS includes (you may select more than one):
Answer
  • Hazardous Ingredients
  • Identity of the Chemical
  • Physical and Chemical Properties
  • Instructions for Use
  • Manufacturing Date
  • Flammability
  • Emergency Contact Information

Question 12

Question
When working with tools, a safety procedure to follow is to:
Answer
  • Check where the tool was manufactured regarding quality.
  • Always read the manufacturer's instructions.
  • Read the warranty information.
  • Make sure the tools belong to you.

Question 13

Question
Why should tools only be used for the job they were intended to perform?
Answer
  • The tool manufacturer may sue you for improper tool use.
  • The tool manufacturer's can take your tools back if you violate the terms of use agreement.
  • They have not been tested for safety for jobs they were not designed for.
  • Jobs are billed by the number of tools used.

Question 14

Question
When using portable electric tools with metal cases, you should:
Answer
  • Lubricate the tool plug before plugging it in.
  • Always make sure you are well grounded.
  • Always use a GFCI receptacle or GFCI adapter.
  • Use as long an extension cord as possible.

Question 15

Question
Before changing the blade in an electric circular saw, you should:
Answer
  • Unplug the saw.
  • Work quickly to reduce the chance of the saw starting.
  • Put on heavy gloves.
  • Place a screwdriver down in the motor section to prevent the saw from starting.

Question 16

Question
Select safe tool practices. You may select more than one.
Answer
  • Keep tools sharp and clean
  • Do not work with tools in the dark
  • Use correct fitting wrenches
  • Always ground yourself when working around electricity
  • Wear thick gloves when working in the dark
  • Arrange your tools around you in a convenient pattern on the floor

Question 17

Question
The base of an extension ladder that is correctly set up will be:
Answer
  • Exactly 3 feet from the wall.
  • As close to vertical as possible.
  • 1 foot from the wall for every 4 feet in length.
  • The same distance away from the wall as the height of the ladder.

Question 18

Question
The top of an extension ladder:
Answer
  • Should extend at least 36 inches above the point where it rests on the building.
  • Flush with the edge of the roof.
  • At least 12 inches below the point where it rests on the building.
  • At least 12 inches above the point where it rests on the building.

Question 19

Question
How can a confined space, such as a walk-in cooler or underground tunnel become a safety hazard?
Answer
  • Cell phones do not receive service in confined spaces.
  • The oxygen is limited; long exposure can cause suffocation.
  • The nitrogen can combine with carbon dioxide to form a toxic gas.
  • Electricity flows more readily in a confined space.

Question 20

Question
When entering a confined space:
Answer
  • You should take a radio or cell phone for emergency calls in case you pass out.
  • You should wear clothes that are resistant to spontaneous arcing.
  • Another worker should be posted outside the confined space.
  • You should leave a note at the entry point.

Question 21

Question
Select safe shop practices. You may select more than one.
Answer
  • Wipe up liquid spills at the end of every week
  • Make sure any tools left on the floor are easily visible
  • Keep walking aisles clear of parts and tools
  • Store oily shop towels in metal waste containers
  • Store face shield by grinding equipment

Question 22

Question
One fire extinguisher in a work area is sufficient:
Answer
  • If its capacity is large enough to handle a fire that could occur.
  • When water is accessible in a work area.
  • As long as it is the right class.
  • Providing it is capable of extinguishing class A, B, C, and D fires.

Question 23

Question
How is size of an extinguisher related to its ability to put out a fire?
Answer
  • The more combustible materials, the smaller the extinguisher.
  • The fewer combustible materials, the newer the extinguisher.
  • The fewer combustible materials, the bigger the extinguisher.
  • The more combustible materials, the bigger the extinguisher.

Question 24

Question
To avoid electrical shock, what class fire extinguisher should be used on electrical equipment?
Answer
  • Class A
  • Class B
  • Class C
  • Class D

Question 25

Question
Select the lifting techniques that will reduce the possibility of injury from lifting a heavy item? Select all that apply.
Answer
  • Keep the load close to your body
  • Lift slowly
  • Keep your knees as straight as possible
  • Keep your back as straight as possible
  • Use your leg muscles to do the work
  • Lift quickly
  • Use your back muscles to do the work

Question 26

Question
Why should oil or grease never be used to lubricate oxygen or acetylene regulators?
Answer
  • It will result in the loss of the manufacturer's warranty.
  • It decreases the accuracy of the gauges.
  • It can react with certain chemicals or materials and result in an explosion.
  • It can result in valve damage due to corrosion.

Question 27

Question
Acetylene tanks should always be stored and transported:
Answer
  • In such a manner as to safely store or transport the greatest number of cylinders possible.
  • In a safely secured horizontal position.
  • Upright and safely secured in a vertical position.
  • Upright, but at an angle of no more than 45 degrees and safely secured.

Question 28

Question
Acetylene should never be used:
Answer
  • Above 20 psi.
  • Above 15 psi.
  • Below 20 psi.
  • Below 15 psi.

Question 29

Question
Before loading a torch set onto the back of your service truck, you should:
Answer
  • Close the cylinder valves and remove the regulators.
  • Prepare a clutter free area to lay the torch set down for safety.
  • Make sure to properly adjust the regulators.
  • Vent all the gas from the cylinders.

Question 30

Question
When the safety cap is removed from acetylene cylinders that hold 55 ft3 or more:
Answer
  • The cylinder must be chained to a cart or structure.
  • The cylinder must be in a vertical position.
  • The cylinder must have a regulator installed on it.
  • The cylinder must be laying in a horizontal position.

Question 31

Question
Which agency requires ground fault interrupters to be used when operating power tools outside?
Answer
  • UL
  • ANSI
  • OSHA
  • EPA

Question 32

Question
How often should live circuits be worked on?
Answer
  • Only when absolutely necessary
  • Whenever deemed necessary
  • When somewhat necessary
  • When the power goes out

Question 33

Question
A simple tool that technicians can use to check for energized circuits is:
Answer
  • A screwdriver with a good insulated handle.
  • The non-contact voltage detector.
  • The digital storage oscilloscope.
  • A wattmeter.

Question 34

Question
Federal law mandates that:
Answer
  • All used refrigerants must be sold to an ESCO certified reclamation site.
  • All used refrigerants must be sold to a UL or ANSI certified reclamation site.
  • All used refrigerants must be sold to an OSHA certified reclamation site.
  • All used refrigerants must be sold to an EPA certified reclamation site.

Question 35

Question
When refrigerants are exposed to glowing metal surfaces or flames:
Answer
  • Carbon monoxide is produced and should be vented.
  • Lethal phosgene gas is produced.
  • Best practices require the use of proper eye protection.
  • A respirator capable of filtering fine dust must be worn.

Question 36

Question
Why are used refrigerant oils not disposed of at an automotive oil recycler?
Answer
  • Used refrigerant oil and used automotive oils are interchangeable.
  • Used refrigerant oil and used automotive oils are not compatible.
  • Used refrigerant oil and used automotive oils can be mixed during disposal.
  • Used refrigerant oil and used automotive oils are compatible.

Question 37

Question
How can a non-toxic, non-flammable refrigerant still be dangerous when released in a confined space?
Answer
  • The refrigerant can replace the air, causing suffocation.
  • A chemical reaction with the air can create a toxic gas.
  • The space temperature can quickly drop below freezing.
  • A chemical reaction with the air can create a flammable byproduct.

Question 38

Question
Safe methods of heating a refrigerant cylinder during charging include (you may select more than one):
Answer
  • Warm condenser discharge air
  • Boiling water
  • An oxy-acetylene torch with a rosebud tip
  • An air acetylene torch adjusted to a low flame
  • Warm water
  • An electric cylinder heater

Question 39

Question
The date of inspection for refrigerant containers that require inspection:
Answer
  • Must be stamped on the top of the container.
  • Should be painted by the number of the refrigerant type on the side of the container.
  • Must be painted the same color as the refrigerant container.
  • Is always stamped on the bottom of the container.

Question 40

Question
A refrigerant container should never be heated or stored in temperatures above:
Answer
  • 125°F.
  • 100°F.
  • 95°F.
  • 115°F.

Question 41

Question
How would one know if a refillable refrigerant cylinder is safe to use?
Answer
  • It will have an inspection date stamped at the top.
  • It will have an inspection date stamped at the middle.
  • It will have an inspection date stamped at the side.
  • It will have an inspection date stamped at the bottom.

Question 42

Question
Refrigerant recovery cylinders should not be filled above:
Answer
  • 90% of their volume with liquid.
  • 70% of their volume with liquid.
  • 80% of their volume with liquid.
  • 100% of their volume with liquid.

Question 43

Question
How should a refrigerant cylinder be warmed up during service?
Answer
  • With warm water not over 125°F.
  • Use an open flame in an area that is vented outdoors.
  • With live steam if available.
  • Place the cylinder in a 350°F oven.

Question 44

Question
Why should fluorocarbon refrigerant systems not be serviced around an open flame?
Answer
  • Even small quantities of fluorinated refrigerant are explosive.
  • The refrigerant might put out the flame.
  • The refrigerant is flammable.
  • Poisonous gas can be created.

Question 45

Question
The maximum fill level for a refillable refrigerant cylinder is:
Answer
  • Refillable cylinders should not be refilled with refrigerant.
  • 80% of its volume.
  • 100% of its volume if the cylinder is rated for that particular refrigerant.
  • 70% of its volume.

Question 46

Question
Select the gasses that are safe to use for refrigeration system pressure testing.
Answer
  • Nitrogen
  • Acetylene
  • Carbon dioxide
  • Oxygen

Question 47

Question
Pressure vessels can be hazardous because:
Answer
  • They emit harmful UV light at higher working pressures.
  • They can cause electrical shock if the internal motor shorts out.
  • They are large and technicians might trip over them.
  • They can rupture violently like a bomb.

Question 48

Question
Pressure vessels such as boilers should have a placard on or near the vessel that displays:
Answer
  • The material the vessel is made of and the name of the inspector.
  • The manufacturing date and type of material the vessel is made of.
  • The parts per million casting impurities and the alloy shear strength.
  • When it was inspected and when the next inspection should be.

Question 49

Question
Why might a bad driving record make it difficult to get a job at a service company?
Answer
  • Service trucks with breathalyzer interlock cost more money.
  • The company may be required to post a "Dangerous Driver" sign on their service vehicle.
  • Your driving record is only important if you will be driving a bus.
  • Your driving record affects the cost of insurance to the company.

Question 50

Question
Why is safe driving a big part of HVACR job safety?
Answer
  • Many HVACR jobs involve driving to get to the job.
  • Employers assume that safe drivers are smarter.
  • You have to drive to get to work.
  • There are not many other aspects of HVACR safety.

Question 51

Question
In case of an accident, the first step is:
Answer
  • Report the accident to the office.
  • File an insurance report.
  • Call 911.
  • Administer first aid.

Question 52

Question
Which types of accidents should be reported?
Answer
  • All accidents
  • Only accidents involving loss of blood
  • Only accidents where the injured worker is obviously hurt
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