Electrical safety
May 7, 2017 | Author: engr.jami | Category: N/A
Short Description
Electrical Safety Precautions...
Description
Choose Safety. Most electrically-related electrically-related fatalities and injuries could easily be avoided. Responsibility for your safety safety begins with you. Take steps to protect yourself everyday and make safety an integral part of how you do business.
Awareness Awar eness of electrical hazards is critical to avoiding and preventing accidents. Our Work Workplace place Safety toolkit will provide you with valuable information that will help you to make safe choices everyday and tips to create a safer work environment. This tool kit
You have a choice:
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Here is how you can
will address topics such as:
choose safety every day: >
O
ver the last 10 years, more than 46,000 workers were injured from on-the-job electrical hazards. These
types of injuries are not isolated to any one industry or one eld of work. It could happen to anyone when they least expect it. It could even happen to you. Fortunately Fortunately,, you have a choice to protect yourself from these threats.
Your choice matters During the work day, a worker is hurt every 30 minutes so
Deenergize – Deenergize – Deenergize
Job Planning & Work Permits
Power down whenever possible. Working on energized
Assess the hazards and dene the tasks each job will
equipment greatly increases your risk of injury and death.
entail. Never work energized unless it is necessary. necessary.
Lock out/Tag out & Test Before You Touch
Who is ESFI?
Each worksite is dynamic. Following these key principles
The Electrical Safety Foundation International (ESFI)
can prevent shock or worse.
is dedicated exclusively to promoting electrical safety. safety. Established in 1994, ESFI proudly sponsors National
severely from electricity that it requires time off the job. Recovery from electrical shocks and burns is slow and painful. But, it could be worse. Nearly 300 workers die from on-the-job electrical injuries each year. Your choice affects families, friends, colleagues and YOU.
2
Arc Flash Prevention & Personal Protective Equipment (PPE)
Electrical Safety Month each May and focuses on raising
In the blink of an eye, an arc ash can forever change
due to electrical accidents. With the support of many
your life. Protect yourself by choosing the appropriate
individuals, corporations, and organizations, ESFI is the
equipment for the job.
leading advocate of electrical safety in the workplace.
worker education to reduce personal injury and death
3
Working with electricity requires planning and extreme care. Whether you are on the job or tackling a project at home, deenergizing and practicing safe work habits can signicantly reduce your risk.
Test Before You Touch Every Time: >
Steps for Achieving an Electrically-Saf Electrically-Safee Work Condition* 1 1.. Determine all possible sources of electrical supply
to the equipment.
Too Many Workers Put Themselves at Risk Each day, nearly 3 million workers participate in
Deenergize — Be Proactive About Your Safety The number one way to prevent electrical injuries and deaths is to deenergize the equipment being worked on. It might take a little more time and planning, but your life and health are worth it. Be proactive about deenergizing equipment and taking steps to ensure that it stays a safe work environment.
Lockout/Tagout Helps Prevent the Unexpected Lockout/tagout procedures safeguard workers from the unexpected energization or startup of machinery and equipment. They also can prevent the release of hazardous energy during service or maintenance activities.
E
very year, workers are injured or killed by circuits they thought were safely turned off. Simply shutting
work activities where lockout/tagout procedures could
off the power is not enough. Hazardous conditions can
protect them. Unfortunately, too many workers still put
still exist. Make sure to always TEST BEFORE YOU
themselves unnecessarily unnecessarily at risk by working energized or
TOUCH. You may not get a second chance to learn this
not following their company’s lockout/tagout procedures.
important lesson.
Failure to comply with OSHA’s lockout/tagout standard is listed as one of the top violations year after year.
Electrical hazards on the job can be avoided by following approved NFPA 70E and OHSA guidelines. Skilled
2. After properly interrupting the load current, open
the disconnecting device(s) for each source. 3. If possible, visually verify that the disconnecting
devices are fully open or that the drawouttype circuit breakers are withdrawn to the fully disconnected position. 4. Apply lockout/tagout devices in accordance with your company’s procedures. 5. Use an adequately rated voltage detector to test
Lockout/Tagout Could Save Your Life
employees, trained in electrical safety procedures, should
By always deenergizing and following established lockout/
make sure they understand and follow safety precautions.
each phase conductor or circuit part to verify it is
tagout procedures, lives are being saved. Compliance to
Those not trained to recognize and avoid electrical
deenergized. Before and after each test, make sure
OSHA’s lockout/tagout procedures prevents an estimated
systems, or not under the supervision of those qualied
120 fatalities and 50,000 injuries each year. Workers
in electrical safety procedures, should avoid contact with
injured on the job from exposure to hazardous energy lose
electrical systems and equipment.
an average of 24 workdays for recuperation.
that that the voltage meter is working correctly. 6. Where the possibility of stored energy exists,
ground the phase conductors or circuit parts before touching them.
Working with electricity requires planning and extreme care. Whether you are on the job or tackling a project at home, deenergizing and practicing safe work habits can signicantly reduce your risk.
Test Before You
Steps for Achieving an Electrically-Saf Electrically-Safee Work Condition*
Touch Every Time: >
1 1.. Determine all possible sources of electrical supply
to the equipment.
Too Many Workers Put Themselves at Risk
E
Each day, nearly 3 million workers participate in
Deenergize — Be Proactive About Your Safety The number one way to prevent electrical injuries and
very year, workers are injured or killed by circuits they thought were safely turned off. Simply shutting
work activities where lockout/tagout procedures could
off the power is not enough. Hazardous conditions can
protect them. Unfortunately, too many workers still put
still exist. Make sure to always TEST BEFORE YOU
themselves unnecessarily unnecessarily at risk by working energized or
TOUCH. You may not get a second chance to learn this
not following their company’s lockout/tagout procedures.
important lesson.
deaths is to deenergize the equipment being worked on. It might take a little more time and planning, but your life and health are worth it. Be proactive about deenergizing equipment and taking steps to ensure that it stays a safe
the disconnecting device(s) for each source. 3. If possible, visually verify that the disconnecting
devices are fully open or that the drawouttype circuit breakers are withdrawn to the fully disconnected position.
Failure to comply with OSHA’s lockout/tagout standard is listed as one of the top violations year after year.
2. After properly interrupting the load current, open
Electrical hazards on the job can be avoided by following
4. Apply lockout/tagout devices in accordance with
your company’s procedures.
approved NFPA 70E and OHSA guidelines. Skilled
work environment.
Lockout/Tagout Helps Prevent the Unexpected Lockout/tagout procedures safeguard workers from the unexpected energization or startup of machinery and equipment. They also can prevent the release of hazardous energy during service or maintenance activities.
5. Use an adequately rated voltage detector to test
Lockout/Tagout Could Save Your Life
employees, trained in electrical safety procedures, should
By always deenergizing and following established lockout/
make sure they understand and follow safety precautions.
each phase conductor or circuit part to verify it is
tagout procedures, lives are being saved. Compliance to
Those not trained to recognize and avoid electrical
deenergized. Before and after each test, make sure
OSHA’s lockout/tagout procedures prevents an estimated
systems, or not under the supervision of those qualied
120 fatalities and 50,000 injuries each year. Workers
in electrical safety procedures, should avoid contact with
injured on the job from exposure to hazardous energy lose
electrical systems and equipment.
that that the voltage meter is working correctly. 6. Where the possibility of stored energy exists,
an average of 24 workdays for recuperation.
ground the phase conductors or circuit parts before touching them. * For a more complete list, please see NFPA 70E ®
4
5
Personal Protective Equipment Arc Flash Explosions Happen Every Day.
is Your Last Line of Defense. >
While great advances are being made to improve equipment design and thereby reduce the number of arc
Workers often nd themselves in environments where they
ash incidences each year, there there is still much to be done.
are exposed to unseen electrical hazards.
2,000 workers are admitted to burn centers each year for treatment of severe arc ash burns – that’s the equivalent of 5 to 10 arc ash incidences each day.
I
n the event of a momentary electric arc, ash re, or exposure to energized equipment, a worker can nd himself completely unprotected against
forces that cause severe or fatal injuries. Everyday work clothes can ignite
What is an Arc Flash?
>
and will continue to burn even after the source of ignition has been removed. Normal clothes will continue to burn until the fabric is totally consumed or will continue to burn with melting and dripping causing severe contact burns to the skin.
n arc ash is the sudden release of electrical
A
metal droplets from melted copper and aluminum
energy through the air when a high–voltage
electrical components shooting out at speeds up to
of defense and will be the major factor in differentiating
gap exists and there is a breakdown between
700 miles per hour, fast enough for the tiny shrapnel
between an electrical event you walk away from and one that requires
conductors.
to penetrate your body.
months of painful healing. PPE comes in many different forms,
An arc ash gives off thermal radiation (heat)
W cue c ?
resistant shirts and pants, safety glasses, face shields, fall
and bright, intense light that can cause burns.
An arc ash can be spontaneous or result from
protection equipment, etc.
Temperatures Temperatures have been recorded as high as 35,000
inadvertently bridging electrical contacts with
˚F. Exposure to these extreme temperatures burns
a conducting object. Other causes may include
Personal protective equipment (PPE) is your last line
including hard hats, gloves, goggles, safety shoes, ame-
the skin directly and ignites the clothing that you
dropped tools or the buildup of conductive dust or
are wearing. High–voltage arcs can also produce
corrosion.
considerable pressure waves by rapidly heating the air and creating a blast. This pressure burst can hit a worker with grenade-like force and send
I e Me PPE w yu, PPE u e:
• Appropriate for the hazard • Worn as the outermost layer
Cii ue wic c c ccu: • Working Working on an energized circuit
• Worn CORRECTLY; CORRECTLY; zipped, butt oned, etc. • Repaired correctly and removed from service service when needed
Personal Protective Equipment
is Your Last Line of Defense. >
Arc Flash Explosions Happen Every Day. While great advances are being made to improve equipment design and thereby reduce the number of arc
Workers often nd themselves in environments where they
ash incidences each year, there there is still much to be done.
are exposed to unseen electrical hazards.
2,000 workers are admitted to burn centers each year for treatment of severe arc ash burns – that’s the equivalent of
I
n the event of a momentary electric arc, ash re, or exposure to energized
5 to 10 arc ash incidences each day.
equipment, a worker can nd himself completely unprotected against
forces that cause severe or fatal injuries. Everyday work clothes can ignite
What is an Arc Flash?
and will continue to burn even after the source of ignition has been removed.
>
Normal clothes will continue to burn until the fabric is totally consumed or will continue to burn with melting and dripping causing severe contact burns to the skin.
n arc ash is the sudden release of electrical
A
metal droplets from melted copper and aluminum
energy through the air when a high–voltage
electrical components shooting out at speeds up to
of defense and will be the major factor in differentiating
gap exists and there is a breakdown between
700 miles per hour, fast enough for the tiny shrapnel
between an electrical event you walk away from and one that requires
conductors.
to penetrate your body.
months of painful healing. PPE comes in many different forms,
An arc ash gives off thermal radiation (heat)
W cue c ?
resistant shirts and pants, safety glasses, face shields, fall
and bright, intense light that can cause burns.
An arc ash can be spontaneous or result from
protection equipment, etc.
Temperatures Temperatures have been recorded as high as 35,000
inadvertently bridging electrical contacts with
˚F. Exposure to these extreme temperatures burns
a conducting object. Other causes may include
Personal protective equipment (PPE) is your last line
including hard hats, gloves, goggles, safety shoes, ame-
the skin directly and ignites the clothing that you
dropped tools or the buildup of conductive dust or
are wearing. High–voltage arcs can also produce
corrosion.
I e Me PPE w yu, PPE u e:
• Appropriate for the hazard
considerable pressure waves by rapidly heating the air and creating a blast. This pressure burst can hit a worker with grenade-like force and send
• Worn as the outermost layer
Cii ue wic c c ccu: • Working Working on an energized circuit
• Worn CORRECTLY; CORRECTLY; zipped, butt oned, etc. • Repaired correctly and removed from service service when needed
6
7
Safety Does Not Just Happen: > Working Energized
Planning for a job properly prevents prevents mistakes and injuries. Safety on the job is not something that just
If it has to be worked energized, using a work permit will
happens; it should be an integral part of the planning process. Job briengs are a great way to include
help you prepare to face the work hazards ahead with a
and encourage all crew members in the safety planning process. Job briengs can be held at the start of
level of professionalism, productivity, and safety.
>
work shifts, as work tasks or hazards change, and as additional personnel arrive. Job brIEfIng and PlannIng ChECklIst:
Work Permits Pe rmits are Safety Safe ty Tools: Tools: >
A
n important part of planning for safety is using
5 ways an energized electrical work permit can help you
work permits. Work permits are used when live
parts cannot be deenergized. Energized work should
1. The permit requires that you to dene your work 1.
only be performed when deenergizing creates additional hazards or is infeasible due to equipment design or operational limitations. Additionally, work permits are
2. 2.
not necessary when you are testing, troubleshooting, or voltage measuring – provided of course that you follow safe work practices and use the appropriate PPE.
3. 3.
When work must be done energized, work permits help everyone involved to think through the process
4. 4.
and to make safety a priority. Work permits include information such as why and how the work will be conducted, detailed information about the shock and ash hazards involved, safe work practices and personal protective equipment (PPE) to be used, and who authorized the energized work.
5. 5.
tasks and assess the hazards associated with the work involved. It causes you to provide justication for the work to be done energized. Why aren’t you working de-energized as required by OSHA? After a hazard assessment, the permit a ids in selecting the PPE necessary to protect you from shock and arc ash hazards. The permit requires that boundaries be dened to keep unqualied workers out of harm’s way and that electrical workers be properly qualied for the specic energized work tasks. The most important reason for using the permit is for the approval to perform the work energized. Requiring a signature is a powerful way to reinforce the primary requirement to work denergized.
Safety Does Not Just Happen: > Working Energized
Planning for a job properly prevents prevents mistakes and injuries. Safety on the job is not something that just
If it has to be worked energized, using a work permit will
happens; it should be an integral part of the planning process. Job briengs are a great way to include
help you prepare to face the work hazards ahead with a
and encourage all crew members in the safety planning process. Job briengs can be held at the start of
level of professionalism, productivity, and safety.
>
work shifts, as work tasks or hazards change, and as additional personnel arrive. Job brIEfIng and PlannIng ChECklIst:
Work Permits Pe rmits are Safety Safe ty Tools: Tools: >
A
n important part of planning for safety is using
5 ways an energized electrical work permit can help you
work permits. Work permits are used when live
parts cannot be deenergized. Energized work should
1. The permit requires that you to dene your work 1.
only be performed when deenergizing creates additional hazards or is infeasible due to equipment design or operational limitations. Additionally, work permits are
2. 2.
not necessary when you are testing, troubleshooting, or voltage measuring – provided of course that you follow safe work practices and use the appropriate PPE.
3. 3.
When work must be done energized, work permits help everyone involved to think through the process
4. 4.
and to make safety a priority. Work permits include information such as why and how the work will be conducted, detailed information about the shock and ash hazards involved, safe work practices and personal protective equipment (PPE) to be used, and who authorized the energized work. 2004 National Fire Protection Association (NFPA) 70E ® 8
The DVD included in this workplace toolkit reinforces the safety training you have already received. It focuses on:
What is NFPA 70E?
J Pi Quie Pe & W Pemi
Promote awareness of this standard for electrical safety
This segment provides a summary overview of how to
in the workplace. This short segment explains its role and
plan for safety whether working deenergized or not. It
application in the industry. industry.
helps you to identify hazards, ask if the equipment can be de-energized, check job plans and safety procedures, think
Electrical Safety 101 for Construction & Industrial These two clips cover address the most common causes of electrical injuries in the industrial setting and on construction sites. It provides unqualied electrical workers with general electrical safety information and safe work practices, and how to identify potential electrical hazards.
about the unexpected, and prepare for an emergency.
Denergize & Test Before You Touch Finally, Finally, this short segment will show you the importance of always deenergizing. It explains the absolute importance of testing all conductors, every time for absence of voltage before starting a job.
For more information on workplace safety, please visit ESFI’s website at www.esf.org .
ESFI’s website also has other valuable resources that are available right at your ngertips. There you will nd safety information and tips on a wide variety of topics, from holiday safety to dangers associated with older home wiring systems. Additionally, Additionally, ESFI makes available press releases and other resources that will help you to work with local media in reducing electrically-related electrically-related deaths and injuries.
9
5. 5.
tasks and assess the hazards associated with the work involved. It causes you to provide justication for the work to be done energized. Why aren’t you working de-energized as required by OSHA? After a hazard assessment, the permit a ids in selecting the PPE necessary to protect you from shock and arc ash hazards. The permit requires that boundaries be dened to keep unqualied workers out of harm’s way and that electrical workers be properly qualied for the specic energized work tasks. The most important reason for using the permit is for the approval to perform the work energized. Requiring a signature is a powerful way to reinforce the primary requirement to work denergized.
The DVD included in this workplace toolkit reinforces the safety training you have already received. It focuses on:
What is NFPA 70E?
J Pi Quie Pe & W Pemi
Promote awareness of this standard for electrical safety
This segment provides a summary overview of how to
in the workplace. This short segment explains its role and
plan for safety whether working deenergized or not. It
application in the industry. industry.
helps you to identify hazards, ask if the equipment can be de-energized, check job plans and safety procedures, think
Electrical Safety 101 for Construction & Industrial These two clips cover address the most common causes of electrical injuries in the industrial setting and on construction sites. It provides unqualied electrical workers with general electrical safety information and safe work practices, and how to identify potential electrical hazards.
about the unexpected, and prepare for an emergency.
Denergize & Test Before You Touch Finally, Finally, this short segment will show you the importance of always deenergizing. It explains the absolute importance of testing all conductors, every time for absence of voltage before starting a job.
For more information on workplace safety, please visit ESFI’s website at www.esf.org .
ESFI’s website also has other valuable resources that are available right at your ngertips. There you will nd safety information and tips on a wide variety of topics, from holiday safety to dangers associated with older home wiring systems. Additionally, Additionally, ESFI makes available press releases and other resources that will help you to work with local media in reducing electrically-related electrically-related deaths and injuries.
10
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