Electrical Safety

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무색/무취라고 생각합니다.

만져지지 않고,

보이지 않으며,

냄새도 없는 에너지라는 점이죠!!

잘못 사용된 에너지가 우리 안전의 치명적인 위험요인이 될 수 있습니다.

아래는 전기안전교육 자료입니다.

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[Contents]

[Electrocution Statistics]

About 5 workers are electrocuted every week
Causes 12% of young worker workplace deaths
Takes very little electricity to cause harm
Significant risk of causing fires
The most potential area of Risk
Second leading cause of death in construction

[Electrical Definition]

[Mishap Outcomes]

Burns

Electrocution

Shocks

Arc Flash / Arc Blast

Fire

Explosions

[Common Direct Causes]

[Common Indirect Causes]

[Burns]

[Electrocution & Shock]

[Electrical Shock]

Dangers of Electical Shock

Currents greater than 75 mA can cause ventricular fibrillation
Will cause death in a few minutes unless a defibrillator is used
74 mA is not much current – a small power drill uses 30 times as much

[Electrical Shock Chart]

[Arc Flash/Blast]

[Fire & Explosion]

[Qualified Personnel]

Electrical work shall be performed by Qualified Personnel

with verifiable credentials who are familiar

with applicable code requirement

[Controlling Electrical Hazards]

Organization uses various methods to protect

all people involved from hazards associated with electricity

[Safety Distance]

Commonly used with regard to power lines

[Isolation & Guarding]

[Enclosure of electrical parts]

A major concept of electrical wiring in general, e.g.,

all connections are made in a box

[Grounding]

Required for all non-current carrying exposed metal parts, unless isolated or guarded as above
All electrical circuits, equipment and enclosures shall be grounded to provide a permanent, continuous, and effective path to ground
Corded tools may be either grounded or be double-insulated

[Insulation]

Intact insulation allows safe handling of everyday electrical equipment, including corded tools. Category also includes insulated mats and sleeves

[PPE]

Personal Protective Equipment (PPE)

Using insulated gloves and other apparel to work on energized equipment, limited to qualified and trained personnel working under very limited circumstances

[Ground Fault Circuit Interrupter]

GFCI

All receptacle outlets that provide temporary electrical power during construction, maintenance, repair, or demolition shall have GFCI protection for personnel

[Testing GFCI’s]

[Lock out / Tag out Procedures]

Identify sources of electrical energy for equipment/circuits in question
Disable backup energy sources
Identify shut-offs for each energy source
Notify all personnel that equipment and circuitry must be shut off, locked out, and tagged out