AF
S
AL
ICNNEL
TR SO

C D PER
LECTE
E FFE
A

TY
E

T

NG
NI
AI
R
Electrical Standards
• OSHA CFR 1910 Subpart S
• NFPA 70E
Scope
• Establish guidelines where reasonable
and adequate methods are utilized to
assure protection from Electrical
Shock...
Responsibility
• An effective electrical safety program
is important. You must have a clear
understanding of the program, ...
Definitions
Affected Employees
• Employees who, in the course of
performing their assigned tasks,
come in contact with ele...
Definitions
Affected Employees are trained in:
•Ability to recognize potentially hazardous
energy and its potential impact...
Hazards of Electricity
• Shock
• Arc
• Blast
Hazards of Electricity
Shock
•Electrical Shock is a physical
stimulation that occurs when
electrical current passes throug...
Hazards of Electricity
Shock and body part physiology
•Skin
 Has a breakdown voltage
 Burns
•Heart
 75 milliamps affect...
Hazards of Electricity
Arc
•Electric arcing occurs when a
substantial amount of electric current
flows through what previo...
Temperature and Heat Data
•Temperature at arc terminals
•
•Curable burn temperature (1/10 sec)•
•Cell death temperature (1...
Factors Affecting Injuries Due to
Electric Arc
• Distance
 From the electrical source
• Absorption
 Body make up
• Tempe...
Hazards of Electricity
Blast
•Blast comes from the pressure
developed by the near instantaneous
heating of the air surroun...
Hazards of Electricity
Summary of causes for injury and
death
•Injury
 Reflex action can cause falls
 Nerve damage
 Bur...
Hazards of Electricity
Causes of Death
•Electrically induced shock causes
fatal;
 Internal and external burns
 Lungs dam...
Safe Work Practices
• Live parts operating at 50 volts or above, to which
an employee may be exposed, shall be deenergized...
Safe Work Practices
When working on energized parts…
•Energized work performed after all
safety planning for task has been...
Safe Work Practices
• Prior to beginning work on or near
exposed energized parts, all persons
involved shall be briefed on...
Safe Work Practices
• Persons performing work on exposed
energized equipment and parts shall
have at least one other perso...
Safe Work Zone
• Areas around electrical equipment
with emphasis on those with access
doors and panels must be kept clear
...
Understanding Electrical Hazards
• Most jobs involve electricity which
creates importance to understand how
to avoid elect...
Understanding Electrical Hazards
• When electricity enters the body, it can
effect our heartbeat, brain function, and
brea...
Tips To Avoid Shock
• Ensure all electrical equipment is in
good repair.
• Report problems so equipment can be
repaired or...
Tips To Avoid Shock
• Ensure grounding connections are
secure
• Look for damaged, worn or broken
wires and connections
• U...
Tips To Avoid Shock
• When unplugging a cord, pull on plug
instead of the cord
• Never use a ladder made of aluminum
or on...
Tips To Avoid Shock
• Determine if there are overhead
hazards such as power lines and
electrical installations. Take
preca...
Home Safety
• Cover unused
electrical outlets to
keep little hands safe
Home Safety
• Lock Breaker Panels
Home Safety
• Don’t create
unnecessary hazards
Home Safety
• Unplug shop lights
before changing bulbs
• Turn off light before
replacing bulb
• Follow manufacturer’s
reco...
Home Safety
• Dry your hands
before operating
electrical devices
• Clean up spills
Home Safety
• Avoid contacting
electricity in wet
conditions
• Turn off breaker before
handling exterior cords
Quiz
Electrical Hazards include:
•Shock
•Arc
•Blast
Factors affecting injuries due to
electric Arc are:
•Distance
•Absorption
•Temperature
•Time
All live parts operating
at 50 volts or above
must be
de-energized
before work can
be performed.
Persons performing work on exposed
energized equipment and parts shall
have at least one other person within
sight or soun...
A metal ladder can be used
when doing electrical work.

True Or False
False
Use a Ground Fault Circuit
Interrupter (GFCI) when using
electrical equipment outdoors
or in a damp area.

True or False
T...
Water is to be used on electrical
fires.

True or False

False
What’s wrong with this picture
Questions
Electrical Safety (affected employees)
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  • (ZES)Zero Energy State (IES)Intermediate Energy State
  • Electrical Safety (affected employees)

    1. 1. AF S AL ICNNEL TR SO C D PER LECTE E FFE A TY E T NG NI AI R
    2. 2. Electrical Standards • OSHA CFR 1910 Subpart S • NFPA 70E
    3. 3. Scope • Establish guidelines where reasonable and adequate methods are utilized to assure protection from Electrical Shock, Arc, and Blast hazards for employees and contractors who are required to perform work in vicinity of exposed, or energized circuits.
    4. 4. Responsibility • An effective electrical safety program is important. You must have a clear understanding of the program, use safe work practices, and involve affected employees in the program. • Your Maintenance Manager is responsible for safety planning and authorizing work on live electrical equipment.
    5. 5. Definitions Affected Employees • Employees who, in the course of performing their assigned tasks, come in contact with electrical power sources, tools, and portable electrical powered devices generally found in workplace
    6. 6. Definitions Affected Employees are trained in: •Ability to recognize potentially hazardous energy and its potential impact on workplace conditions •Proper handling and use of portable electrical equipment associated with their job •Proper techniques for opening and closing circuits, and necessary procedures to follow before replacing fuses or resetting breakers when associated with their jobs
    7. 7. Hazards of Electricity • Shock • Arc • Blast
    8. 8. Hazards of Electricity Shock •Electrical Shock is a physical stimulation that occurs when electrical current passes through body •Its effects depend upon:  Magnitude of current flow  Body parts through which current flows  General physical condition of person being shocked
    9. 9. Hazards of Electricity Shock and body part physiology •Skin  Has a breakdown voltage  Burns •Heart  75 milliamps affects beating  Muscle • Loss of muscular control • Burns
    10. 10. Hazards of Electricity Arc •Electric arcing occurs when a substantial amount of electric current flows through what previously had been air. It is an enormous amount of concentrated radiant energy creating a high intensity blast
    11. 11. Temperature and Heat Data •Temperature at arc terminals • •Curable burn temperature (1/10 sec)• •Cell death temperature (1/10 sec) • •Temperature of burning clothing • •Clothing ignition temperature •Temperature of metal droplets • •Temperature at suns surface 35,0000 F 1450 F 2050 F 1,4000 F 7000 F 1,4000 F 1,8000 F • 9,2600 F
    12. 12. Factors Affecting Injuries Due to Electric Arc • Distance  From the electrical source • Absorption  Body make up • Temperature  Electricity travels faster through cool air • Time  Exposure duration
    13. 13. Hazards of Electricity Blast •Blast comes from the pressure developed by the near instantaneous heating of the air surrounding the arc and from the expansion of the metal as it is vaporized. •Blast hurls people •Knocks down walls •Ejects projectiles
    14. 14. Hazards of Electricity Summary of causes for injury and death •Injury  Reflex action can cause falls  Nerve damage  Burns  Blindness  Loss of hearing  Organ dysfunction
    15. 15. Hazards of Electricity Causes of Death •Electrically induced shock causes fatal;  Internal and external burns  Lungs damaged from inhaling superheated plasma and molten products  Heart failure
    16. 16. Safe Work Practices • Live parts operating at 50 volts or above, to which an employee may be exposed, shall be deenergized before work is done on or near them, unless employee can demonstrate that deenergizing introduces additional or increased hazards • Decision to work energized (other than electrical measurements) will be made on a case by case basis after all efforts have been made to deenergize equipment during pre-job safety planning
    17. 17. Safe Work Practices When working on energized parts… •Energized work performed after all safety planning for task has been completed •Who will be performing the work? •What additional PPE is required (insulated gloves, goggles, etc.) •Document why work could not be performed under ZES or a predetermined IES
    18. 18. Safe Work Practices • Prior to beginning work on or near exposed energized parts, all persons involved shall be briefed on precautions • When work conditions or methods change that could potentially compromise safety, additional safety planning is required
    19. 19. Safe Work Practices • Persons performing work on exposed energized equipment and parts shall have at least one other person within sight or sound, who is knowledgeable of emergency reporting procedures.
    20. 20. Safe Work Zone • Areas around electrical equipment with emphasis on those with access doors and panels must be kept clear of materials, equipment, or any other articles that deter access to electrical equipment.
    21. 21. Understanding Electrical Hazards • Most jobs involve electricity which creates importance to understand how to avoid electrical shock • Numerous types of electrical hazards, depending on equipment in use. • While machines have high and low voltage sources, electrical shocks from an overloaded transmission line or an incorrectly grounded power tool, results can be equally fatal
    22. 22. Understanding Electrical Hazards • When electricity enters the body, it can effect our heartbeat, brain function, and breathing possibly causing immediate death or serious injury • Under certain conditions, even small amounts of electricity can cause death. • Never take any electrical device for granted.
    23. 23. Tips To Avoid Shock • Ensure all electrical equipment is in good repair. • Report problems so equipment can be repaired or replaced • Only those authorized and qualified do repairs on electrical equipment. Fatal accidents have been caused by poorly repaired equipment. • Use only correctly grounded equipment. Never use a three-pronged cord missing 3rd prong.
    24. 24. Tips To Avoid Shock • Ensure grounding connections are secure • Look for damaged, worn or broken wires and connections • Use a Ground Fault Circuit Interrupter (GFCI) when using electrical equipment outdoors or in a damp area. Do not use submerged in water. Do not handle any electrical equipment, including cords and plugs, with wet hands.
    25. 25. Tips To Avoid Shock • When unplugging a cord, pull on plug instead of the cord • Never use a ladder made of aluminum or one with metal reinforcement when doing any electrical work. This includes changing a light bulb.
    26. 26. Tips To Avoid Shock • Determine if there are overhead hazards such as power lines and electrical installations. Take precautions to avoid contact with objects such as a ladder, pole or pipe. • Don’t ever use water on an electrical fire. Use only extinguishers designed specifically for electrical fires. Know where to locate and how to use extinguishers in your workplace.
    27. 27. Home Safety • Cover unused electrical outlets to keep little hands safe
    28. 28. Home Safety • Lock Breaker Panels
    29. 29. Home Safety • Don’t create unnecessary hazards
    30. 30. Home Safety • Unplug shop lights before changing bulbs • Turn off light before replacing bulb • Follow manufacturer’s recommendation for bulb wattage
    31. 31. Home Safety • Dry your hands before operating electrical devices • Clean up spills
    32. 32. Home Safety • Avoid contacting electricity in wet conditions • Turn off breaker before handling exterior cords
    33. 33. Quiz
    34. 34. Electrical Hazards include: •Shock •Arc •Blast
    35. 35. Factors affecting injuries due to electric Arc are: •Distance •Absorption •Temperature •Time
    36. 36. All live parts operating at 50 volts or above must be de-energized before work can be performed.
    37. 37. Persons performing work on exposed energized equipment and parts shall have at least one other person within sight or sound, who is knowledgeable of emergency reporting procedures. True or False True
    38. 38. A metal ladder can be used when doing electrical work. True Or False False
    39. 39. Use a Ground Fault Circuit Interrupter (GFCI) when using electrical equipment outdoors or in a damp area. True or False True
    40. 40. Water is to be used on electrical fires. True or False False
    41. 41. What’s wrong with this picture
    42. 42. Questions

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