safety

1. ELECTRICAL SAFETY IN INDUSTRIES
BY
C.V.RAGHUNATHAN,B.TECH;DIS(HONS);MIE;MSEA
DY.CHIEF SAFETY MANAGER

2. ELECTRICAL SAFETY
TOP PRIORITY AREA
• No warning
• Probability for fatality high
• Minimum 15 persons die out of electric
shock every day
• 35% of the fires are due to electricity

3. ELECTRICAL HAZARD
CONSEQUENCES
• Electric Shock
• Electrical Burns
• Electrical Fire & Explosion

4. ELECTRICAL SHOCK
• VOLTAGE
• CURRENT
• RESISTANCE

5. VOLTAGE
• Low voltage (Up to 250 V)
• Medium Voltage (Up to 650 V)
• High Voltage(Up to 33 KV)
• Extra High Voltage(Above 33 KV)

6. ELECTRIC CURRENT
• Magnitude
• Duration
• Type
• Frequency

7. HUMAN BODY RESISTANCE
• Dry Body Resistance( 1 to 4 Lakh Ohm)
• Wet Body Resistance (1000 Ohm)
• Ear to Ear (100 Ohm)

8. ELECTRIC SHOCK
CONTRIBUTING FACTORS
• Magnitude of current through the body
• Type of current (AC/DC)
• Frequency
• Voltage
• Resistance offered by the body(Natural/Artificial)
• Path selected through the body(Hand/leg/Heart)
• Sex(Male/Female)
• Mental State

9. ELECTRICAL SHOCK
CONTROL OF CONSEQUENCES
• By increasing the Body
resistance(Natural/Artificial)
• By reducing the duration of flow of electric
current
• By providing a low resistance path to the
earth and diverting the current away from
the body
• By maintaining safe separation distance

10. ELECTRICAL SAFETY
MANAGEMENT
• SCIENCE AND ART
• Control of Equipment Performance
• Control of Material Performance
• Control of Machine Performance
• Control of MAN Performance

11. ELECTRICAL SAFETY MANAGEMENT
PROACTIVE APPROACH
PROCEDURAL CONTROL MEASURES
Human Performance
(Recruitment,Selection,Induction,Training,
Devolopment,Motivation,Supervision,
Discipline,Information,Instruction)
Work Methods/Procedures/Permit Systems
Provision/Usage of PPE

12. ELECTRICAL SAFETY MANAGEMENT
REACTIVE APPROACH
• Emergency Plan
• Emergency Equipment
• First Aid Treatment
• Fire Fighting Systems