Book 4

Question 1

if an area contains hazardous concentrations of flammable gases or vapours under normal operating conditions, electrical equipment must be designed for use in the area. This is designated as:
Select one:

a.
Class 1

b.
Class 2

c.
Class 3

d.
Class 4

Answer 1

Class 1

Question 2

Daily fire suppression system checks should include:

Select one:

a.
Visual inspection of fire hoses for readiness

b.
Hydrostatic testing of sprinkler lines

c.
Fire pump run test

d.
Water supply valves to all systems are open and locked open if necessary

Answer 2

The correct answer is: Visual inspection of fire hoses for readiness

Question 3

Which of the following situations will support combustion?

a.
A closed pressure vessel that contains nitrogen gas and liquid hydrocarbon above their ignition temperature

b.
A mixture of air and methane in a flare header

c.
A closed pressure vessel that contains propane at a temperature above its flash point

d.
An open container of hydrocarbon at a temperature below its flashpoint

Answer 3

A mixture of air and methane in a flare header

Question 4

A major disadvantage of a floor standing pump extinguisher over a backpack extinguisher is:

Select one:

a.
The floor unit has far less capacity

b.
The backpack unit has twice the range

c.
Pumping must stop to relocate the floor standing pump

d.
The floor unit pump is only single acting

Answer 4

Pumping must stop to relocate the floor standing pump

Question 5

An area in which easily ignited material fibers are handled or manufactured has an Electrical Designation of:
Select one:

a.
Class 1

b.
Class 2

c.
Class 3

d.
Class 4

Answer 5

Class 3

Question 6

The four basic components of WHMIS are:
Select one:

a.
Employee training, Governing legislation, Confidentiality of information, Material Safety Data Sheets

b.
Governing legislation, Labelling, Material safety data sheets, Employee training

c.
Governing legislation, Hazard identification and product classification, Labelling, Material Safety Data Sheets

d.
Employee training, Labelling, Material Safety Data Sheets, Hazard identification and product classification

Answer 6

Employee training, Labelling, Material Safety Data Sheets, Hazard identification and product classification

Question 7

Fire pump testing should be completed:

Select one:

a.
Annually

b.
Monthly

c.
Weekly

d.
Annually, Monthly and weekly

Answer 7

Annually, Monthly and weekly

Question 8

For annual performance testing, fire pumps should be compared to manufacturers’ specification while running under ______ flow conditions and _________ rated capacity.

a.
No, 100%

b.
Process, 50%

c.
No, 150%

d.
Full, 150%

Answer 8

No, 150%

Question 9

To prevent the formation of explosive mixtures, oxygen and acetylene cylinders should be:
Select one:

a.
Equipped with different thread connectors

b.
Stored outside

c.
Stored in separate areas

d.
Regularly hydro-tested

Answer 9

Stored in separate areas

Question 10

The type of fire extinguisher usually used on a live electrical fire is a/an ________ extinguisher:
Select one:

a.
Pressurized water

b.
Dry chemical

c.
AFFF

d.
Carbon dioxide

Answer 10

Carbon dioxide

Question 11

During an injury related investigation by an OH&S officer, work being done at the work site may be suspended:
Select one:

a.
Indefinitely

b.
Until the officer arrives at the scene

c.
For a maximum of 48 hours

d.
Until any serious safety hazards are corrected

Answer 11

Until any serious safety hazards are corrected

Question 12

It is the employers responsibility to ____________ personal protective equipment .

Select one:

a.
Supply, ensure usage, and maintain

b.
Issue, care for, and maintain

c.
Only supply

d.
Supply and ensure usage of

Answer 12

Supply and ensure usage of

Question 13

The valve cap on a gas cylinder:
Select one:

a.
Will prevent gas escaping if the cylinder valve leaks.

b.
Must be in place when the tare weight is being measured.

c.
Will prevent the cylinder valve from breaking off if the cylinder falls over.

d.
Protects the cylinder valve from damage.

Answer 13

Protects the cylinder valve from damage.

Question 14

What is the best way to prevent a fire?

a.
Eliminate static electricity

b.
Provide employees with fire fighter training

c.
Install fire proofing wherever possible

d.
Prevent the formation of a combustible fuel and air mixture

Answer 14

Prevent the formation of a combustible fuel and air mixture

Question 15

A reducing agent or fuel could be:
Select one:

a.
Carbon monoxide

b.
A heavy metal oxide

c.
Hydrogen peroxide

d.
Concentrated Sulphuric acid

Answer 15

Carbon monoxide

Question 16

The “flash point” of a flammable liquid is the temperature at which:
Select one:

a.
It may also be called the “flame point”

b.
The liquid will produce enough vapour to form a flammable mixture when mixed with air

c.
Spontaneous combustion will occur

d.
The liquid will burn

Answer 16

The liquid will produce enough vapour to form a flammable mixture when mixed with air

Question 17

A Class “A” fire would involve:
Select one:

a.
Gasoline or oil

b.
Paint or grease

c.
Electrical equipment

d.
Wood or coal

Answer 17

Wood or coal

Question 18

A safe work permit for cold work is intended for work:

Select one:

a.
Only in freezers and cold spaces

b.
For work that may cause a fire, but unlikely

c.
Only for outside work in winter months

d.
For work that will usually not cause a fire

Answer 18

For work that will usually not cause a fire

Question 19

Which of the following applies to hearing protection?

a.
Is required when in noisy areas of power plants

b.
Refers to earmuffs only, not ear plugs

c.
Is legislated below 80 decibels

d.
Is required if a worker already has detectable hearing loss

Answer 19

Is required when in noisy areas of power plants

Question 20

If hydrocarbon vapour is present in air, when will it support combustion?

a.
At any concentration

b.
When it is between the upper and lower explosive limits

c.
When it is exposed to a spark

d.
When it is below the lower explosive limit

Answer 20

When it is between the upper and lower explosive limits

Question 21

How can Class B fires be prevented?

a.
Using proper kitchen safety when cooking with oils

b.
Storing wood and paper properly

c.
Performing regular preventive maintenance on electrical equipment

d.
Regularly inspecting and tightening the packing on leaking valve packing

Answer 21

Regularly inspecting and tightening the packing on leaking valve packing

Question 22

The most common and easiest to maintain sprinkler system is the:
Select one:

A.
Preaction

B.
Dry Pipe

C.
Wet Pipe

D.
Deluge

Answer 22

Wet Pipe

Question 23

The type of sprinkler system that requires a supplemental detection system (such as a smoke detector) to operate is the:
Select one:

a.
Deluge System

b.
Preaction

c.
Wet Pipe

d.
Dry Pipe

Answer 23

Preaction

Question 24

Top guard rings are used on some gas cylinders instead of:
Select one:

a.
Vapour valves

b.
Pressure relief valves

c.
Valve caps

d.
Regulators

Answer 24

Valve caps

Question 25

The receiver of a safety work permit: Select one: a. Does not need to verify the information the Safe Work Permit issuer put on the permit. b. Relies solely on the issuer to create and maintain a safe work site c. Should work with the Safe Work Permit issuer to ensure a safe work site d. Does not need to hand in the safe work permit at the end of the shift

Answer 25

Should work with the Safe Work Permit issuer to ensure a safe work site

Question 26

What is the main cost an employer must pay in the event of a workplace injury? a. Training costs b. Insurance costs c. Investigation costs d. Incident reporting

Answer 26

Insurance costs

Question 27

By definition in this chapter, a "confined space" is any enclosed or partially enclosed space having: Select one: a. Harmful gases, vapours, mists, or dusts b. Mechanical hazards and restricted ingress c. Limited room for tools and equipment d. Restricted access and egress and may become a life-threatening environment

Answer 27

Restricted access and egress and may become a life-threatening environment.

Question 28

What type of fire should be put out with water? Select one: a. Class “A” b. Class “B” c. Class “C” d. Class “A”, “B”, and “C”

Answer 28

Class “A”

Question 29

Which of the following is a Class “B” fire? Select one: a. A fire in a coal bunker b. A fire in a wood pile c. A turbine lube-oil fire d. A fire in an electrical panel

Answer 29

A turbine lube-oil fire

Question 30

Asbestos is an old insulation material still found in many plants. Asbestos fibres cause health problems because: Select one: a. The dust causes flu like diseases b. The fibres cause scarring for no reason c. The fibres do not cause the damage, but the dust sitting in the lungs causes a type of pneumonia. d. The fibres lodge in a workers lungs and stay because of hook like barbs on the fibre

Answer 30

The fibres lodge in a workers lungs and stay because of hook like barbs on the fibre

Question 31

In order for hydrocarbons to burn, the: Select one: a. Mixture must be lean b. Air/fuel mixture should be above the upper flammable limit c. Fuel/air mixture must be rich d. Fuel must be a vapour

Answer 31

Fuel must be a vapour

Question 32

What are the four basic types of sprinkler systems? a. Automatic, semi-automatic, manual, dry pipe b. Deluge, pre-action, wet pipe, dry pipe c. Deluge, pre-action, automatic, combined d. Class I, Class II, Class III, Class IV

Answer 32

Deluge, pre-action, wet pipe, dry pipe

Question 33

Aqueous film forming foam agents extinguish a fire by: Select one: a. Breaking the chain reaction b. Cooling and smothering c. Sealing vapours, and cooling d. Sealing vapours, cooling, and removing oxygen e. Combining oxygen with the burning material Feedback

Answer 33

Sealing vapours, cooling, and removing oxygen

Question 34

Who is affected by the financial impacts caused by workplace injuries? a. Employees and employers b. Employers only c. Insurance companies only d. Employees only

Answer 34

Employees and employers

Question 35

A Class “B” fire can be extinguished by: Select one: a. Lowering the temperature of the burning wood or paper. b. Creating a chain reaction between the molecules of the burning material. c. Smothering the burning liquid. d. Lowering the temperature of the burning liquid.

Answer 35

Smothering the burning liquid.

Question 36

Which is the workers responsibility? Select one: a. Co-operating with others on workplace safety and health b. Clearly stated goals and objectives of the health and safety program c. Clearly defined roles and responsibilities for management, workers, contractors, and visitors at the plant site d. Issuing proper safety equipment to all workers

Answer 36

Co-operating with others on workplace safety and health

Question 37

How are oxygen and acetylene cylinders stored? a. 2 m apart b. 6 m apart c. Together, if properly secured d. Together, in warehouses only

Answer 37

6 m apart

Question 38

Fire sprinkler hydrostatic testing should be done _________: Select one: a. not required on most sprinkler systems b. annually c. every 3-5 years d. monthly

Answer 38

every 3-5 years

Question 39

Overheating of electrical equipment is: Select one: a. Is one of the conditions that usually cause electrical fires in buildings b. Usually the result of inadequate wiring c. Often due to over sized fuses being installed d. The result of blocked cooling fin passages

Answer 39

Is one of the conditions that usually cause electrical fires in buildings

Question 40

When isolating an electric motor driven pump, you should first: Select one: a. Close the pump inlet valve b. Open the motor breaker c. Ensure the pump is drained d. Close the pump discharge valve

Answer 40

Open the motor breaker

Question 41

During the rehabilitation of an injured worker, the supervisor should: Select one: a. Have as little contact as possible with the worker. b. Not ask the worker for assistance in determining prevention methods. c. Let the worker know the investigators are finding fault. d. Assist the worker in seeking and obtaining support services.

Answer 41

Assist the worker in seeking and obtaining support services.

Question 42

Confined spaces include the following, except for: Select one: a. Stacks b. Boilers c. MCC room d. Deaerators

Answer 42

MCC room

Question 43

Fire pump testing is described in the standard: Select one: a. NFPA 13 b. NFPA 25 c. NFPA 20 d. NFPA 14

Answer 43

NFPA 25

Question 44

Fall protection equipment is required, in most jurisdictions, for workers working at heights over: Select one: a. 3 metres b. 10 metres c. 10 feet d. 2.6 metres

Answer 44

3 metres

Question 45

Fire pumps usually start automatically with a signal from: Select one: a. Sprinkler head b. Fire main pressure c. Smoke / heat detector d. Water main pressure

Answer 45

Fire main pressure

Question 46

A fire in which of the following constitutes a Class “C” fire: Select one: a. Coal bunker b. Fuel tank c. Lumber pile d. Electrical panel

Answer 46

Electrical panel

Question 47

Which of the following is true for emergency response plans? a. They are generic and can apply to all types of plants and facilities b. They are made to protect the plant assets and the environment c. They are made to protect the public, the environment, plant personnel, and equipment d. They do not consider coordination with municipal resources

Answer 47

They are made to protect the public, the environment, plant personnel, and equipment

Question 48

Which is a function of the joint health and safety committee? Select one: a. Issue safety equipment to workers b. Deal with safety concerns of the workers c. Clean and maintain all safety equipment in the plant d. Complete and maintain all incident reports in the plant

Answer 48

Deal with safety concerns of the workers

Question 49

Which one of these statements is true?: Select one: a. The attitude of an injured worker has no impact on the outcome of his injury. b. Financial costs of a workplace injury outweigh all other costs c. A workplace injury can destroy an employee’s self esteem d. An injured worker usually causes his own injury.

Answer 49

A workplace injury can destroy an employee’s self esteem

Question 50

An area in which the atmosphere contains dust in concentrations high enough to produce explosive or ignitable mixtures, has an Electrical Classification of: Select one: a. Class 1 b. Class 2 c. Class 3 d. Class 4

Answer 50

Class 2

Question 51

Foam fire extinguishers are recommended for use on: Select one: a. Class “A” and Class “B” fires b. Class “A” and Class “C” fires c. Class “C” and Class “B” fires d. Class “C” and Class “D” fires

Answer 51

Class “A” and Class “B” fires

Question 52

What is an example of a human cost related to workplace injuries? a. Legal costs and fines b. Production losses c. Loss of self-esteem d. Increased insurance costs

Answer 52

Loss of self-esteem

Question 53

A high proportion of the reported workplace injuries are from the age group of: Select one: a. 25 to 30 b. 30 to 45 c. 16 to 25 d. 45 to 55

Answer 53

16 to 25

Question 54

Which of the following applies to confined space entry permits? a. They may not be used for boiler furnaces b. They do not require a watchperson c. They are needed for control rooms with only one door d. They are necessary for internal vessel inspections

Answer 54

They are necessary for internal vessel inspections

Question 55

Statistically, the greatest number of workplace injuries occur among which group(s) of workers? a. Workers age 40–55 b. Workers age 21–40 c. New workers and young workers d. Workers approaching retirement

Answer 55

New workers and young workers

Question 56

What are Class K fires? a. Electrical fires b. Fires that require a potassium extinguishing agent c. Kitchen fires d. Combustible liquid fires

Answer 56

Kitchen fires

Question 57

Why should hard hats never be painted? Select one: a. Paint does not adhere well to plastic b. Different colors normally indicate varying job positions or departments in plants c. Paint will weaken the plastic d. Toxic fumes may be released

Answer 57

Paint will weaken the plastic

Question 58

Which of the following applies to fire extinguishers? a. They do not require training to use b. They can be used on any class of fires c. They should only be used by trained firefighters d. They should only be used by personnel who have the proper training

Answer 58

They should only be used by personnel who have the proper training

Question 59

The ignition temperature of a fuel/air mixture is the: Select one: a. Lowest temperature at which a mixture will burn. b. Temperature at which it becomes a lean mixture. c. Highest mixture temperature before the fuel turns to vapour. d. Temperature at which the mixture is above the boiling point.

Answer 59

Lowest temperature at which a mixture will burn.

Question 60

Halon agents extinguish a fire by: Select one: a. Cooling below ignition temperature b. Radiation shielding c. Isolating the fuel by coating d. Breaking the molecular chain reactions

Answer 60

Breaking the molecular chain reactions

Question 61

_________ are used in conjunction with safe work permits. a. Incident reports b. Stop work orders c. Equipment lockout procedures d. Pens

Answer 61

Equipment lockout procedures

Question 62

Foam extinguishers are recommended for: Select one: a. Class “A” and Class “B” fires b. Class “A” and Class “C” fires c. Class “B” and Class “C” fires d. All classes of fires

Answer 62

Class “A” and Class “B” fires

Question 63

Which of the following applies to the maintenance of fire extinguishers? a. Must be completed every 3 years b. Involves dismantling, cleaning, and testing the fire extinguisher c. Requires the fire extinguisher to be sent back to the manufacturer d. Involves recharging the fire extinguisher and replacing the pin

Answer 63

Involves dismantling, cleaning, and testing the fire extinguisher

Question 64

A course on H2S safety should be taken by all workers who may encounter the gas in their plant. One of the recommended courses is called: Select one: a. H2S Alive b. H2S Awareness c. H2S Safety d. H2S Petroleum awareness

Answer 64

H2S Alive

Question 65

Carbon Dioxide is used to fight electrical fires because it Select one: a. Has better cooling ability than other agents. b. Provides a barrier between the oxygen and the burning components. c. Does not leave a residue. d. Is non toxic.

Answer 65

Does not leave a residue.

Question 66

Gas cylinders must be stored: Select one: a. Inside, close to the consuming equipment b. In a well heated room c. With all fittings lightly oiled or greased d. Upright and firmly secured Feedback

Answer 66

Upright and firmly secured

Question 67

What is the first step in eliminating hazards in an energy plant? Select one: a. Identify the hazards b. survey the employees for ideas on eliminating hazards c. Set up a housekeeping plan to keep the areas clean and free of hazards d. Review past accident/incident reports

Answer 67

Identify the hazards

Question 68

Carbon dioxide fire extinguishers: Select one: a. Are self-expelling b. Are the best for Class “A” fires c. Are the quietest in operation d. Present no hazards during use

Answer 68

Are self-expelling

Question 69

What is an effective method of fire prevention? a. Proper housekeeping b. Eliminating ignition sources c. Properly storing flammable materials d. A, B and C

Answer 69

A, B and C

Question 70

What tool is used to find hazards in a plant? Select one: a. Employee surveys b. A Hazard Assessment and Identification process c. Analyzing accident and incident investigation forms d. Hiring a contractor to clean up the plant site, and review the work

Answer 70

A Hazard Assessment and Identification process

Question 70

Which of the following is true for electrical equipment? a. Can cause a fire if not properly designed for use in electrically classified areas b. Should only be operated by an electrician c. Must be designed to operate in all types of atmospheres without breaking down d. Should never be used in hydro facilities

Answer 70

Can cause a fire if not properly designed for use in electrically classified areas

Question 71

Which of the following is true for isolating equipment before work is done? a. Isolation is not required to prevent injury or fatality b. Isolation cannot be done until a safe work permit is issued c. Isolation is required when energy poses a hazard to workers d. Isolation is done by electricians

Answer 71

Isolation is required when energy poses a hazard to workers

Question 71

All maintenance on portable fire extinguishers must be: Select one: a. Completed on all extinguishers in the plant at the same time b. Performed at the work site in case they are required for emergency service c. Contracted out to a certified service company d. Supervised by a National Fire Protection Association employee

Answer 71

Contracted out to a certified service company

Question 72

A Material Safety Data Sheet must be supplied by the: Select one: a. Occupational Health and Safety Committee b. Supplier of the controlled product c. Federal government d. Plant supervisor

Answer 72

Supplier of the controlled product

Question 73

Where do fire pumps need a check valve? a. In both the suction and discharge lines b. They do not need a check valve on the discharge line c. In the suction line d. On the discharge line

Answer 73

On the discharge line

Question 74

Fuel air mixtures that are outside of the flammable range: Select one: a. Can ignite spontaneously b. Cannot burn or explode c. May explode but not burn d. Must have a source of ignition to burn them

Answer 74

Cannot burn or explode

Question 75

An employer must not allow shortcuts when it comes to: Select one: a. Annual shutdowns b. Safety Committee formation c. Isolation of equipment d. Equipment overhaul scheduling

Answer 75

Isolation of equipment

Question 76

Which of the following is true for asbestos that is present in the workplace? a. It is illegal b. It is a health hazard whether it has been disturbed or not c. It should not be removed or disturbed without following special procedures d. It is only a health hazard when ingested in large quantities

Answer 76

It should not be removed or disturbed without following special procedures

Question 77

Individual responsibilities for health and safety must be borne by: Select one: a. Management only b. Employees only c. All personnel in a work place d. Owners only

Answer 77

All personnel in a work place

Question 78

The extinguishing medium for a Class “D” fire is: Select one: a. Carbon dioxide b. Dry powder c. Aqueous film forming foam d. Dry chemical

Answer 78

Dry powder

Question 79

Confined space entry procedures should be applied when work is being done in any industrial area that does not have: Select one: a. Moderate air temperatures b. Proper lighting c. Easy access for personnel rescue in an emergency d. A gas-free atmosphere

Answer 79

Easy access for personnel rescue in an emergency

Question 80

Which of the following applies to a safe work permit? a. Ensures all work is performed safely b. Is not a legal document c. Is a hazard and risk assessment tool d. Is required to enter any area of a plant

Answer 80

Is a hazard and risk assessment tool

Question 81

If a fuel-air mixture is below the lower explosive limit, the mixture: Select one: a. Is said to be lean b. Is explosive c. Is too rich d. Must have a source of ignition

Answer 81

Is said to be lean

Question 82

Which of the following extinguishers would ordinarily be used to combat a Class “C” fire: Select one: a. Carbon dioxide and Foam b. Carbon dioxide and Dry chemical c. Foam and Dry chemical d. Foam and Water

Answer 82

Carbon dioxide and Dry chemical

Question 83

Which of the following extinguishers would ordinarily be used to combat a Class “C” fire: Select one: a. Foam b. Dry powder c. Water d. Carbon dioxide

Answer 83

Carbon dioxide

Question 84

Burning metals may be extinguished using: Select one: a. Dry chemical extinguishers b. Carbon dioxide extinguishers c. AFFF extinguishers d. Dry powder extinguishers

Answer 84

Dry powder extinguishers

Question 85

A process that causes fires to endure and renew themselves is: Select one: a. Temperature b. A reducing agent c. An oxidizing agent d. Molecular activity due to high temperature

Answer 85

Molecular activity due to high temperature

Question 86

A Class C fire will become which class of fire once the power has been turned off? a. Class K b. Class D c. F d. Class A or Class B

Answer 86

Class A or Class B

Question 87

Which is a function of the joint health and safety committee? Select one: a. Complete and maintain all incident reports in the plant b. Deal with safety concerns of the workers c. Issue safety equipment to workers d. Clean and maintain all safety equipment in the plant

Answer 87

Deal with safety concerns of the workers

Question 88

It is the employers responsibility to ____________ personal protective equipment . Select one: a. Supply and ensure usage of b. Issue, care for, and maintain c. Only supply d. Supply, ensure usage, and maintain

Answer 88

Supply and ensure usage of

Question 89

Daily fire suppression system checks should include: Select one: a. Fire pump run test b. Water supply valves to all systems are open and locked open if necessary c. Visual inspection of fire hoses for readiness d. Hydrostatic testing of sprinkler lines

Answer 89

Visual inspection of fire hoses for readiness

Question 90

Which of the following situations will support combustion? a. A closed pressure vessel that contains nitrogen gas and liquid hydrocarbon above their ignition temperature b. A mixture of air and methane in a flare header c. A closed pressure vessel that contains propane at a temperature above its flash point d. An open container of hydrocarbon at a temperature below its flashpoint

Answer 90

A mixture of air and methane in a flare header

Question 91

Carbon Dioxide is used to fight electrical fires because it Select one: a. Has better cooling ability than other agents. b. Provides a barrier between the oxygen and the burning components. c. Does not leave a residue. d. Is non toxic.

Answer 91

Does not leave a residue.

Question 92

Which is the workers responsibility? Select one: a. Clearly defined roles and responsibilities for management, workers, contractors, and visitors at the plant site b. Clearly stated goals and objectives of the health and safety program c. Co-operating with others on workplace safety and health d. Issuing proper safety equipment to all workers

Answer 92

Co-operating with others on workplace safety and health

Question 93

In order for hydrocarbons to burn, the: Select one: a. Mixture must be lean b. Air/fuel mixture should be above the upper flammable limit c. Fuel/air mixture must be rich d. Fuel must be a vapour

Answer 93

Fuel must be a vapour

Question 94

A high proportion of the reported workplace injuries are from the age group of: Select one: a. 25 to 30 b. 30 to 45 c. 16 to 25 d. 45 to 55

Answer 94

16 to 25

Question 95

A course on H2S safety should be taken by all workers who may encounter the gas in their plant. One of the recommended courses is called: Select one: a. H2S Alive b. H2S Awareness c. H2S Safety d. H2S Petroleum awareness

Answer 95

H2S Alive

Question 96

A major disadvantage of a floor standing pump extinguisher over a backpack extinguisher is: Select one: a. The floor unit has far less capacity b. The backpack unit has twice the range c. Pumping must stop to relocate the floor standing pump d. The floor unit pump is only single acting

Answer 96

Pumping must stop to relocate the floor standing pump

Question 97

The type of fire extinguisher usually used on a live electrical fire is a/an ________ extinguisher: Select one: a. Pressurized water b. Dry chemical c. AFFF d. Carbon dioxide

Answer 97

Carbon dioxide

Question 98

Fall protection equipment is required, in most jurisdictions, for workers working at heights over: Select one: a. 3 metres b. 10 feet c. 10 metres d. 2.6 metres

Answer 98

3 metres