Electrical Safety

Electrical safety
PREPARED BY RPC HSE DEPARTMENT

What does hazard mean?
• Hazard means:
any potential or actual threat to the wellbeing of people machinery or environment
• Electrical hazard safety means:

taking precautions to identify and control electrical hazards
Why Do have to know about it?

Because failing to take the necessary precautions can lead to:
 injury or death
 fire or property damage
What are the safety priorities?
Electrical hazards exist in almost every workplace. Common causes
of electrocution are:
• making contact with overhead wires
• undertaking maintenance on live equipment
• working with damaged electrical equipment, such as extension
leads, plugs and sockets
• using equipment affected by rain or water
3
incidents?
If you come across a person receiving an electric shock:
• If possible, disconnect the electrical supply (switch Off )
• Never put yourself at risk
• Take precautions to protect yourself and anyone else in the vicinity
• Apply the first aid principles
• Assess the injuries and move the injured person to a safe area if required
• Administer first aid if trained
4
Do you want to be a victim?
You could be the victim if you:
• don’t follow proper procedures around electricity
• use electrical equipment improperly
• use faulty electrical equipment
What are the types of injuries?

• Burns
• Shocks
• Falls
5
What are the levels of effect of current?
AC current (mA) Effect on human body
1 Slight tingling sensation
2-9 Small shock
10-24 Muscles contract causing you to freeze
25-74 Respiratory muscles can become paralysed; pain; exit burns often
visible
75-300 Usually fatal; ventricular fibrillation; entry & exit wounds visible
>300 Death almost certain; if survive will have badly burnt organs and
probably require amputations
6
Effect of Electric Current on Human Body
7
What should you do in an electrical emergency ?
For low voltage electricity between 50 V AC and 110 V DC
• remove the source of electricity supply
• begin CPR if trained
• call the emergency number on site
For high voltage electricity more than 1000 V

• call the emergency number for your site
• don’t go near the casualty
• don’t touch the casualty or try to free them with anything
8
electricity ?
• Don’t wear metal objects like hand watch or bracelet
• Turn power off
• Wear appropriate clothing
• Don’t touch live parts
• Don’t install or repair electrical equipment
• Use qualified personnel
• Clean and dry leads and plugs before use
• Use PPE
9
What are other safety measures ?
• Be alert to warning signs
• Use the right equipment
• Study the operation manual
• Take care of extension leads
• Use only approved extension lamps
• Don’t pull on leads
• Use residual current devices – RCDs
• Use the proper fuses and circuit breakers
10
What are the types of protection ?
Lockout & Tagout
Lock & Tag all Sources
• Place Lock & Tag on each disconnecting means used to de-energize circuits
• Attach lock to prevent operating the disconnecting
• Place Tag with each lock
Note: Only the person who places the lock may remove it.
11
Lockout Devices
12
If a Lock cannot be applied…!!!
• A tag used without a lock must be supplemented by at least one
additional safety measure that provides a level of safety equal to that of
a lock.
• Examples:
• Removal of an isolating circuit element such as a fuse
• Blocking of a controlling switch
• Opening of an extra disconnecting device..
13
Is it “Dead” ?
Verify of the System is De-energized
• Operate the equipment
• controls to check that equipment cannot be restarted.
Use test equipment to test the circuits &

electrical parts for voltage & current
14
Alerting others for hazards
 Use barricades to prevent or limit access to work

areas with un-insulated energized conductors or
circuit parts.
 Use safety signs, safety symbols, or accident

prevention tags to warn others about electrical
hazards which may endanger them.
 If signs and barricades do not provide sufficient

warning and protection from electrical hazards, an
attendant shall be stationed to warn and protect
employees.
15
Preventing Electrical Hazards - Tools
• Inspect tools before use
• Use the right tool correctly
• Protect your tools
• Use double insulated tools
Double Insulated marking

16
Any problems ?
17
Do Electrical Hazards Exist ?
• Tripped circuit breakers or blown fuses
• Warm tools, wires, cords, connections, or junction boxes
• GFCI that shuts off a circuit
• Worn or frayed insulation around wire or connection
18
Summary
Electrical equipment must be:
• Listed and labeled
• Free from hazards
• Used in the proper manner
If you use electrical tools you must:
• Be protected from electrical shock
• Use them in a comfortable position
• Be provided with necessary safety equipment
To STAY ALIVE, you have to STAY ALERT

Love yourself
19

Electrical Safety

Uploaded by

Copyright:

Available Formats

Electrical Safety

Uploaded by

Document Information

Original Description:

Original Title

Copyright

Available Formats

Share this document

Share or Embed Document

Sharing Options

Did you find this document useful?

Is this content inappropriate?

Copyright:

Available Formats

Electrical Safety

Uploaded by

Copyright:

Available Formats

Electrical safety

PREPARED BY RPC HSE DEPARTMENT

• Electrical hazard safety means:

Why Do have to know about it?

• Administer first aid if trained

What are the types of injuries?

2-9 Small shock

10-24 Muscles contract causing you to freeze

For high voltage electricity more than 1000 V

• Attach lock to prevent operating the disconnecting

• Place Tag with each lock

• controls to check that equipment cannot be restarted.

Use test equipment to test the circuits &

 Use barricades to prevent or limit access to work

 Use safety signs, safety symbols, or accident

 If signs and barricades do not provide sufficient

Double Insulated marking

• Use them in a comfortable position

• Be provided with necessary safety equipment

To STAY ALIVE, you have to STAY ALERT

You might also like