(Incident Safety Officer) Chapter 9 Reading Hazardous Energy

Question 1

What is defined as stored potential energy that will cause harm if suddenly released?
A. Electricity
B. Explosion
C. Hazardous energy
D. Gound gradient energy

Answer 1

C. Hazardous energy

Question 2

If crews are working at an incident that has 50,000-200,000 Volts what is the minium safe working distance
A. 10 feet
B. 15 feet
C. 20 feet
D. 30 feet

Answer 2

B.15 feet

Question 3

Systems that inlude pulleys, cables, counterweights, and springs are examples of?
A. Mechanical energy
B. Pressurized energy
C. Hazardousn energy
D. Potential

Answer 3

A. Mechanical energy

Question 4

What type of systems use hydraulics (liquids) or pneumatics (air/gas) as a medium to achieve power or force?
A. Pressurized systems
B. Aquatic systems
C. Utility systems
D. Forced systems

Answer 4

A. Pressurized systems

Question 5

Which Weather element is most important consideration when fighting fire?
A. Earth
B. Wind
C. Rain
D. Temperature

Answer 5

B. Wind

Question 6

A downed powerline may be energizing the earth in concentric ring up to____ feet?
A. 10
B. 15
C. 20
D. 30

Answer 6

D. 30 feet

Note page 146 ISO

Question 7

Electrial energy that has established a path to ground through the earth and that continues to energize the earth such as a down power line is called what?
A. A down power line
B. Earthing
C. Ring of Death
D. Ground Gradient

Answer 7

D. Ground Gradient

Question 8

What is not considered an electrical equipment hazard?
A. Pad-Mounted transformers
B. Ground level Vaults
C. Subterranean Vaults
D. Ohm

Answer 8

D. Ohm
Ohm is a unit of measurement for resistance of an electrical current

Question 9

According to IOS book. A firefighter who feels tingling in his or her boots must back away using a ____ motion to keep both feet in contact with the ground?
A. Shuffle-foot motion
B. Hopping with feet together motion
C. Stop, Drop, Roll
D. Duck and cover

Answer 9

A. Shuffle-foot motion

Question 10

According to ISO book. The two type of electrical equipment hazard that are particulalty hazardous and should not be attempted with out consulation with an electrical power athority are?
A. Battery rooms, Substations fires
B. Electric car fire, dryer fire
C. Down power lines, car fires
D. Transformer fire, transistor fires

Answer 10

A. Battery rooms, Substation fires
Battery rooms contain UPS or uninerrupted power supplies found in dats storage and processing centers
Substation fire have step up and down transformers that have oil that can burn for days, High voltage lines, have drainage systems, and heat can damage and release high tention lines supporting metal structure

Question 11

What is a BLEVE?
A. Boiling liquid extingishing vapor explosion
B. Boiling liquid extension vapor explosion
C. Boiling liquid expanding vapor explosion
D. None of the above

Answer 11

C. Boiling liquid expanding vapor explosion

Question 12

According to ISO book. A victim trapped in a vehicle with an undeployed air restraint safety device is in danger; Consider this an ____ rescure environment.
A. Delayed
B. Slowed
C. Rapid
D. Immediate

Answer 12

D. Immediate

Question 13

What color is wire or connecton point in an electric car that would indicate high voltage. (700v and 125 amps)
A. Black
B. Yellow
C. Green
D. Orange

Answer 13

D. Orange

Question 14

____ Humidity means increased fire spread.
A. Higher
B. Lower
C. Medium
D. Raining

Answer 14

B. Lower

Question 15

Thunder that laps less than _ seconds fom the flash means your in the lighting area. ISO
A. 3
B. 5
C. 20
D. 30

Answer 15

B. 5

ISO 157