ELECTRICAL SAFETY IN ELECTRICAL SAFETY IN INDUSTRY & HOMEINDUSTRY & HOME

ELECTRICAL SAFETY IN ELECTRICAL SAFETY IN INDUSTRY & HOMEINDUSTRY & HOME

Er. BK PandaEr. BK Panda OHS ProfessionalOHS Professional

Electrical Safety - Definition

•The term electrical safety deals with safety of life and property in relation to the aspects of the generation, the subsequent distribution, and the final and consequent consumption of electricity

Definition•safety means, freedom from

danger or protection, and also devices preventing unintentional operations, or devices designed to prevent a mechanism from being operated unintentionally

Electric Shock

• An electric shock can occur upon contact of a human's body with any source of voltage high enough to cause sufficient current flow through the muscles or hair

• The minimum current a human can feel is thought to be about 1 milliampere (mA).

• The current may cause tissue damage or fibrillation if it is sufficiently high. Death caused by an electric shock is referred to as electrocution.

Shock effects• Psychological The perception of electric shock • Burns Heating due to resistance can cause extensive

and deep burns • Asphyxiation (Respiratory Arrest)• Ventricular Fibrillation AC current travelling through the chest for a

fraction of a second may induce ventricular fibrillation

• Neurological effects Current can cause interference with

nervous control

• Arc-flash hazards The heat produced may cause severe

burns, especially on unprotected flesh

Issues affecting lethality

• Current flowing through organs

• Frequency of the power supply

• Time of contact

• Availability of First-aid

Lethality of a shock

• 0.001 A - Threshold of feeling an electric shock, no pain.

• 0.005 A - Maximum current which would be harmless.

• Upto 0.009 is let go current.• 0.01-0.02 A - Sustained muscular

contraction. "Cannot let go" current.

Continued….

• 0.05 A - Ventricular interference, respiratory difficulty

• 0.1-0.3 A - Ventricular fibrillation. Can be fatal.

Point of entry

Macroshock: Current flowing across intact skin and through the body. Current traveling from arm to arm, or between an arm and a foot, is likely to traverse the heart, therefore it is much more dangerous than current traveling between a leg and the ground.

Continued……

Microshock: Direct current path to the heart tissue.

Avoiding danger of shock• Right Posture• Correct Instrument & Tools• Appropriate PPEs

Electrical Safety at Home

• Remember that electricity always takes the shortest way to the ground

• It will go through wire, metal, wet

objects... or you. It's invisible, but very real, so treat it with respect.

Some indoor safety tips:

• Do not touch any electrical circuit when your hands are wet or bleeding from a cut or an abrasion

• Use only appliances and equipment approved by Underwriters Laboratories (look for the UL listing on the label), or other recognized testing laboratories

Continued…….

* Unplug appliances before you clean them.

• Teach your kids not to poke things into electrical outlets, toasters, or any other appliances, whether they're on or off. Use plug covers or inserts in all your outlets

Some outdoor safety tips:

Keep television and radio antennas away from power lines. They should be far enough away to remain clear if they were blown over.

Teach your kids to recognize "Danger" signs and not to climb in trees if power lines pass through or near them. They should also know that pad-mounted transformers (those metal cabinets on concrete pads) are not safe places to play

On Injury

• Incase of an injury due to electric shock, give the victim artificial respiration and immediately call for a doctor. Don’t crowd around the victim; he needs fresh air.

Conclusion

• Our endeavor should be to observe safety precautions while handling electrical equipments.

• Remember- this energy is invisible

The THEME

• SAFETY IS MORE IMPORTANT THAN MERE CONVENIENCE

•THANK YOU