The ten commandments of electrical safety

Mar 26, 2013Download as pptx, pdf

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Electricity can cause harm through shock, burns, arc-blast, and fires if proper safety procedures are not followed when working with electrical equipment. Direct contact with energized components or short circuits can lead to electrocution, injury from falls due to shocks, or burns. Arc flashes present additional risks like pressure waves, heat, and molten metal. Following lockout/tagout procedures and not working alone are important safety practices to prevent electrical accidents.

Technology

I. Beware of the lightning that lurketh in seemingly uncharged
capacitors lest it cause thee to bounce upon thy buttocks in an unseamanlike manner and cause thy hair to stand on end, thereby
exceeding regulation length.
II. Cause thou the switch that supplieth large quantities of juice to be opened and thusly tagged, that thy days may be long in this
earthly vale.
III. Prove to thyself that all circuits that radiateth and upon which
thou worketh are grounded and thusly tagged, lest they lift thee to radio frequency potential and causeth thee to radiate with the
angels.
IV. Tarry thou not amongst those fools that engage in intentional
shocks, for they are not long of this world and are surely unbelievers.
V. Take care thou useth the proper method when thou taketh the measure of high voltage so thou dost not incinerate both thee and thy
test equipment. For verily, though thou hast no NSN (National Stock Number) and can be easily surveyed, the test equipment has
one, and as a consequence, bringeth much woe to thy supply officer.
VI. Take care thou tamperest not with interlocks and safety devices, for this incurreth the wrath of thy department head and bringeth
the fury of thy Commanding Officer on thy head.
VII. Work thou not on energized equipment without proper procedures, for if thou dost so, thy shipmates will surely be buying beers for
thy widow and consoling her in ways not generally acceptable to thee.
VIII. Verily, verily, I say unto thee, never service equipment alone, for electrical cooking is a slow process, and thou might sizzle in thine
own fat upon a hot circuit for hours on end before thy maker sees fit to end thy misery and drag thee into his fold.
IX. Trifle thee not with radioactive tubes and substances lest thou
commence to glow in the dark like a lightning bug and thy wife be frustrated and have no further use for thee except thy wages .
X. Commit thou to memory all the words of the prophets which are written down in the 300th chapter of thy bible which is the 'Naval
Ship's Technical Manual' and giveth out with the straight dope and counseleth thee when thou hast suffered a ream job by thy
division LPO (Leading Petty Officer).

 SHOCK. Electric shock occurs when the human
body becomes part of the path through which
current flows.
 The direct result can be electrocution.
 The indirect result can be injury resulting from
a fall or movement into machinery because of a
shock

 BURNS. Burns can result when a person touches
electrical wiring or equipment that is energized.

 ARC-BLAST. Arc-blasts occur from high- amperage
currents arcing through the air. This can be caused by
accidental contact with energized components or
equipment failure.

 Arc Flash:  Arc Blast:
 80%-Burns due to  Pressure Wave
ignition of clothing  Heat
 Temperature-35,000 F  Molten metal
 Fatal Burns-10 ft.  Destruction of
 2000 people structures and life
hospitalized with
burns
 Molten metal

 Cause
 Short Circuit caused by working on energized equipment
 Dropped Tool
 Occurs in milliseconds
 Temp: 30,000 degrees
 Air expands very violently
 15 tons of pressure

 FIRES. Electricity is one of the most common
causes of fires both in the home and in the
workplace. Defective or misused electrical
equipment is a major cause.

Depends on:
Current and Voltage
Resistance
Path through body
Duration of shock

 More than 3 mA- Painful shock- cause indirect
accident
 More than 10 mA- Muscle contraction – “No Let Go”
danger
 More than 30 mA- Lung paralysis, usually
temporary

 More than 50 mA- Ventricular fibrillation, usually
fatal
 100 mA to 4 A- Certain ventricular fibrillation, fatal
 Over 4 A- Heart paralysis, severe burns

 Conductive articles of jewelry and clothing (such a watch
bands, bracelets, rings, key chains, necklaces, etc...) may
not be worn if they might contact exposed energized parts

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The ten commandments of electrical safety

1. I. Beware of the lightning that lurketh in seemingly uncharged capacitors lest it cause thee to bounce upon thy buttocks in an unseamanlike manner and cause thy hair to stand on end, thereby exceeding regulation length. II. Cause thou the switch that supplieth large quantities of juice to be opened and thusly tagged, that thy days may be long in this earthly vale. III. Prove to thyself that all circuits that radiateth and upon which thou worketh are grounded and thusly tagged, lest they lift thee to radio frequency potential and causeth thee to radiate with the angels. IV. Tarry thou not amongst those fools that engage in intentional shocks, for they are not long of this world and are surely unbelievers. V. Take care thou useth the proper method when thou taketh the measure of high voltage so thou dost not incinerate both thee and thy test equipment. For verily, though thou hast no NSN (National Stock Number) and can be easily surveyed, the test equipment has one, and as a consequence, bringeth much woe to thy supply officer. VI. Take care thou tamperest not with interlocks and safety devices, for this incurreth the wrath of thy department head and bringeth the fury of thy Commanding Officer on thy head. VII. Work thou not on energized equipment without proper procedures, for if thou dost so, thy shipmates will surely be buying beers for thy widow and consoling her in ways not generally acceptable to thee. VIII. Verily, verily, I say unto thee, never service equipment alone, for electrical cooking is a slow process, and thou might sizzle in thine own fat upon a hot circuit for hours on end before thy maker sees fit to end thy misery and drag thee into his fold. IX. Trifle thee not with radioactive tubes and substances lest thou commence to glow in the dark like a lightning bug and thy wife be frustrated and have no further use for thee except thy wages . X. Commit thou to memory all the words of the prophets which are written down in the 300th chapter of thy bible which is the 'Naval Ship's Technical Manual' and giveth out with the straight dope and counseleth thee when thou hast suffered a ream job by thy division LPO (Leading Petty Officer).

2.  SHOCK. Electric shock occurs when the human body becomes part of the path through which current flows.  The direct result can be electrocution.  The indirect result can be injury resulting from a fall or movement into machinery because of a shock

3.  BURNS. Burns can result when a person touches electrical wiring or equipment that is energized.  ARC-BLAST. Arc-blasts occur from high- amperage currents arcing through the air. This can be caused by accidental contact with energized components or equipment failure.

4.  Arc Flash:  Arc Blast:  80%-Burns due to  Pressure Wave ignition of clothing  Heat  Temperature-35,000 F  Molten metal  Fatal Burns-10 ft.  Destruction of  2000 people structures and life hospitalized with burns  Molten metal

5.  Cause  Short Circuit caused by working on energized equipment  Dropped Tool  Occurs in milliseconds  Temp: 30,000 degrees  Air expands very violently  15 tons of pressure

6.  FIRES. Electricity is one of the most common causes of fires both in the home and in the workplace. Defective or misused electrical equipment is a major cause.

7. Depends on: Current and Voltage Resistance Path through body Duration of shock

8.  More than 3 mA- Painful shock- cause indirect accident  More than 10 mA- Muscle contraction – “No Let Go” danger  More than 30 mA- Lung paralysis, usually temporary

9.  More than 50 mA- Ventricular fibrillation, usually fatal  100 mA to 4 A- Certain ventricular fibrillation, fatal  Over 4 A- Heart paralysis, severe burns

10.  Conductive articles of jewelry and clothing (such a watch bands, bracelets, rings, key chains, necklaces, etc...) may not be worn if they might contact exposed energized parts

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The ten commandments of electrical safety

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