Unit 4: Avoiding Electrocution Hazards

Question 1

Is electrocution one of OSHA’s “Fatal 4” hazards?

Answer 1

Yes.

Question 2

What are the 4 types of injuries caused by electricity?

Answer 2

Electrocution (Death from an electric shock), Shock (Caused when a current passes through the body), Burns (Caused by and arc flash or contact with energized parts), and Falls (A secondary injury after a shock).

Question 3

What are the first 3 common hazards?

Answer 3

1.) Exposed live parts
2.) Improper or damaged cords, plugs, or outlets
3.) Overloaded circuits

Question 4

What are the last 3 common hazards?

Answer 4

1.) Equiptment not properly grounded
2.) Working to close to overhead power lines
3.) Using electrical equiptment in wet conditions

Question 5

What does Current (Amps) measure?

Answer 5

The flow of electricity.

Question 6

What does Voltage (Volts) measure?

Answer 6

Electrical “pressure.”

Question 7

What does Resistance (Ohms) measure?

Answer 7

The opposition to current flow.

Question 8

What is Grounding?

Answer 8

Providing a safe path for electricity to return to the earth in case of fault

Question 9

What does a Ground-Fault Curcuit Interrupter (GFCI) do?

Answer 9

It detects electrical leakage and shuts power off within 1/40th of a second.

Question 10

How should you disconnect tools from an outlet?

Answer 10

By pulling the plug, not the cord.

Question 11

When should you use GFCI’s?

Answer 11

Always, but especially when working outdoors or in damp areas.

Question 12

Should you ever use damaged or frayed cords?

Answer 12

No.

Question 13

What is Lock-out, Tag-out (LOTO)?

Answer 13

A safety procedure designed to protect workers from hazardous energy during the maintenence or servicing of equiptment.

Question 14

Who is allowed to place LOTO’s?

Answer 14

Authorized employees.

Question 15

How far away from overhead powerlines should you stay and what should you always assume about them?

Answer 15

You should stay at lest 10 feet away and assume that they are energized.