Quiz 2

Question 1

Is there a difference between a shock and being electrocuted?

Answer 1

YES! being electrocuted means you die.

Question 2

How does an electrical shock happen?

Answer 2

-Electricity flows in a circuit through a conductor.
-A person’s body can become part of the circuit.
-Shock occurs when the body completes the circuit.

Question 3

What factors affect the Severity of a Shock?

Answer 3

-Amount of current (amps)
-Path of the current through the body
-Length of time
-Voltage
-Moisture
-Health status

Question 4

What are the levels of shock and their probable effect

Answer 4

1 mA: slight tingling
5 mA: a disturbing slight shock felt
6-30 mA: Painful shock, loss of muscular control
50-150 mA: a potentially fatal shock that causes extreme pain, respiratory arrest, and severe muscular contractions
1000-4300 mA: Muscle and nerve damage, death is likely
10,000 mA: Cardiac arrest, severe burns and probable death.

Question 5

What are some protective measures against shocks?

Answer 5

• Insulation (on wires)
• Guarding
• Grounding
• Protective Devices
• Safe Work Practices

Question 6

What is the symbol for insulated tools?

Answer 6

a square with another square in it

Question 7

How does guarding work?

Answer 7

2 ways to “Guard” Electrical Equipment
1. Location
2. Enclosure (fenced)

Question 8

What is the electrical shock PPE ratings for gloves and helmets?

Answer 8

Gloves: 00, 0 ,1 ,2
Helmets: Class G (general 2,200 volts), Class E (electrical 20,000 volts)

Question 9

What is an Emergency?

Answer 9

An event that has Death, Disruption, or Damage

Question 10

What does a good emergency plan include?

Answer 10

Reporting, Evacuation, operation, contacts, accounting, and rescue

Question 11

What are the rules for emergency exits?

Answer 11

• Emergency Exits and Exit Routes must be Clearly Marked.
• Emergency Exits and Exit Routes must be Unlocked during work hours.
• Confirm that the emergency exit doors have Panic Hardware or Lever Style (one hand - one motion door openers).

Question 12

What is on the fire triangle?

Answer 12

Air, heat, and fuel

Question 13

How does a fire extinguisher work?

Answer 13

by cooling the fuel, removing the oxygen, or interrupting the chemical reaction

Question 14

How do you use a portable fire extinguisher?

Answer 14

Pull, Aim, Squeeze, Sweep (PASS)

Question 15

What are the different types of fires and extinguishers?

Answer 15

A (solid materials), B (liquids or gas such as gasoline), C (Electrical fires), D (fires caused by reactive metals), K (kitchen fires)

Question 16

How often should a fire extinguisher be checked?

Answer 16

annually by a fire equipment professional

Question 17

What is a confined space?

Answer 17

You can enter and perform assigned work, AND limited or restricted entry or exit, AND not designed for continuous occupancy.

Question 18

When does a confined space require a permit?

Answer 18

When it is a confined space that has a hazard!

Question 19

What are some examples of confined space hazards?

Answer 19

Dangerous atmosphere, or
- Risk of engulfment
- Risk of entrapment
- Physical hazards
- Any other dangerous condition

Question 20

What are some questions to ask when determining if a confined space needs a permit?

Answer 20

• Can a worker enter and perform work?
• Is there limited entry/exit?
• Is it designed for continuous occupancy?
• Is there a potential hazard?

Question 21

What is the safe oxygen level?

Answer 21

19.5% - 23.5%

Question 22

What happens at 19.5%, 17%, 14-16%, 6-10%, and <6% oxygen level?

Answer 22

19.5%: minimum safe level
17%: Increased heart rate, breathing rate
14-16%Poor coordination, rapid breathing, fatigue
6-10%: Nausea, vomiting, death in
8 minutes
<6%: Coma, convulsions and death

Question 23

Who is on the team when someone enters a confined space?

Answer 23

Entrant, Attendant, and Entry Supervisor

Question 24

What does the entrant need to know?

Answer 24

The hazards, How to use equipment, How to communicate, and How to exit

Question 25

What does the attendant need to know?

Answer 25

▪ Know the hazards
▪ Know the signs and symptoms of exposure
▪ Maintain count of entrants
▪ Remain outside the space
▪ Communicate with entrants
▪ Monitor conditions
▪ Call for rescue
▪ Manage unauthorized persons
▪ Performs non-entry rescue

Question 26

What does the entry supervisor need to know?

Answer 26

▪ Know the hazards
▪ Verifies safe entry conditions
▪ Verifies rescue services

Question 27

Respirators provide protection from harmful?

Answer 27

▪ Dusts
▪ Metal Fumes – welding
▪ Solvent Vapors – spray coating, adhesives,
paint and cleaners
▪ Bacteria – TB in healthcare
▪ Chemicals – chlorine, anhydrous ammonia
▪ Gases and vapors
▪ Oxygen deficiency

Question 28

What are the two categories of air contaminants?

Answer 28

Particulates (Settable and Suspended) and gaseous phase

Question 29

What is the limit that particles are visible to the human eye?

Answer 29

50 µm

Question 30

What are the classes of respirators?

Answer 30

Air-purifying respirators (APRs)
- Half Face APRs
- Full-Face APRs
- Powered ARPs (PARPs)
Atmosphere-supplying respirators
- Supplied-air respirators (SARs) – known as air-line units
- Self-Contained Breathing Apparatus (SCBA) units