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TITLE |
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DOCUMENT ID |
6200
Electrical Safety Manual |
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1.0
Purpose
The purpose of this Electrical Safety Manual is to establish minimum requirements for identifying and controlling electrical hazards to prevent fatalities and injuries from working on or around hazardous electrical energy, and to establish Jefferson Lab National Accelerator Facility (Jefferson Lab) site-specific electrical safe work practices that meet regulatory requirements and match the types of hazards found on-site.
The Electrical Safety Manual is not just a document or set of documents. Instead, it is the combined application of applicable National Codes and Standards and Integrated Safety Management (ISM) to electrical hazards for work on or around electrical equipment.
The objectives of the Electrical Safety Manual are to:
a. Prevent electrical-related injuries
b. Implement proactive controls across the spectrum of expected hazards
c. Educate the Jefferson Lab population about electrical hazards
d. Promote a vibrant electrical safety culture
e. Ensure compliance with established standards
The policy of Jefferson Lab is to protect its employees, subcontractors and visitors and implement the regulatory requirements listed in ES&H Manual 1100.
a. All electrical facilities and equipment must be installed, operated, and maintained in a safe manner.
b. All work involving electrical energy must be performed in a safe manner.
c. The primary safe work practice is to establish an electrically safe work condition prior to performing the work.
d. Employees, visitors, and users who are not named on Jefferson Lab’s approved Qualified Electrical Worker (QEW) list, maintained by the Electrical Authority Having Jurisdiction (EAHJ), are prohibited from performing electrical or electronics work requiring qualification.
e. Employees visitors, and users who are not on the approved QEW list are only authorized to operate electrical and electronics equipment within manufactures instructions, posted signs and placards, and Jefferson Lab training or instructions. In addition, persons who are not on the approved QEW list may only operate switches where there is no marked shock or arc flash hazard warning.
NOTE: Any Jefferson Lab employee, subcontractor, or user who performs work on Class 2 or higher electrical or electronics equipment must be a Qualified Electrical Worker (QEW). Only a QEW may perform a zero energy and zero voltage check to verify equipment is in an electrically safe condition prior to maintenance or repair by others.
Work is defined as building, servicing, maintaining, testing, and repairing electrical or electronics equipment.
Class 2 or higher electrical or electronics equipment is all equipment designed to operate at ≥50V and any equipment designed to operate at <50V with >50 amps.
Supervisors, team leaders, and managers are responsible for overseeing workers, visitors, and users under their supervision to enforce this requirement. Employees that knowingly violate the QEW requirement are subject to disciplinary action. Visitors and users who knowingly violate the QEW requirement are subject to loss of site access privileges.
All subcontractors must provide evidence that each worker performing work that requires qualification is trained to the NFPA 70E (2015 Edition) Article 110.3 requirements.
2.0
Format
The Electrical Safety Manual is divided into
four (4) parts:
a. 6200- Electrical Safety Manual
b. 6210- Electrical Safety Manual - Electrical
Safe Work Practices
c. 6220- Electrical Safety Manual - Non-NRTL
Equipment Design and Construction
d. 6230- Electrical Safety Program Manual - Appendices
3.0
Scope
This document establishes the institutional requirements and electrical safe work practices at Jefferson Lab for both QEWs and non-QEWs. It includes electrical work practices, maintenance requirements, training, and installation requirements for facilities distribution and premises wiring, utility distribution, and commercial and Research and Development (R&D)-type equipment.
These safe work practices are being driven by:
NFPA 70, National Electric Code (NEC), 2017 Edition
NFPA 70E, Standard for Electrical Safety in the Workplace, 2015 Edition
OSHA 29 CFR 1910 and 1926
DOE-HDBK-1092-2013, DOE Electrical Safety
Handbook, 2013 Edition
IEEE C2, National Electrical Safety Code (NESC), 2017
Edition
4.0
Applicability
Compliance with the electrical safety program
is required for all Jefferson Lab workers, users, research visitors, students,
subcontractors at every level, and suppliers who may be exposed to hazardous
electrical energy while performing any construction, service, research,
maintenance, modification, demolition, or similar activities.
5.0
Qualifying Electrical Workers (QEW)
QEWs are qualified by completing the training courses in section Table-1, Training Requirements, for the applicable level of QEW and approved by the division to conduct the work.
The existing qualification requirements for electrical and electronics workers are listed in Table 1 below. Divisions performing electrical and electronic work are responsible for ensuring that workers demonstrate proficiency in their ability to complete assigned tasks in accordance with Jefferson Lab policies and procedures. Once demonstrated, supervisors are required to document the proficiency and identify equipment the QEW is permitted to work on.
Qualification will require initial and recurrent training (or evidence thereof), demonstration of skills, and written documentation of training completion and extent of qualification (equipment or work types).
Additional training will be required for higher hazard work. The Jefferson Lab Electrical Authority Having Jurisdiction (EAHJ) will oversee the program, make the final determination on QEW status, and develop and maintain the approved QEW list.
a. Electrical work must be performed only by qualified and approved electrical workers, with approved equipment and Personal Protective Equipment (PPE), using the electrical safe work practices outlined in this program.
b. Supervisors, team leaders, and managers are accountable for determining that only qualified electrical workers perform electrical work, and for verifying that qualified electrical workers have the required work planning, authorization, training, equipment, and PPE specified in this program.
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Table 1. How to
determine the training requirements for electrical safety and lock out /
tagout |
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If the answer to questions below is yes,
you are required to successfully complete the course(s) to the right of the
question. |
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Title |
Code |
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1. |
Does the work involve
non-electrical hazardous stored energy (e.g., compressed gasses, hydraulic or
pneumatic, thermal, chemical, or mechanical)? |
Lockout/Tagout (LOTO) |
ESC007 |
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Safety Practical
Application |
ESC008 |
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2. |
Does the person in this
position operate electrical equipment other than using a light switch, for example,
turning appliances or common office equipment on or off? |
Basic Electrical Safety |
ESC001 |
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3. |
Is the
person a TJNAF employee, subcontractor, or user who performs all modes of
work on Class 1 electrical or electronics equipment? |
Basic Electrical Safety |
ESC001 |
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LOTO |
ESC007* |
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Safety
Practical Application |
ESC008* |
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4. |
Is
the person in this position responsible for energizing and de-energizing
electrical equipment at the source of electrical power (such as operation of
circuit breaker, knife switch, etc.)? |
Basic Electrical Safety |
ESC001 |
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Arc Flash & PPE |
ESC002 |
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Safe Switching of
Electrical Equipment |
ESC005 |
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Electrical Contact Release |
ESC006 |
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LOTO |
ESC007 |
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Electrical
Safety Practical Application |
ESC008 |
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5. |
Is the person a TJNAF employee, subcontractor, or user who
performs work on Class 2 or higher electrical or electronics equipment? |
Basic Electrical Safety |
ESC001 |
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Arc Flash & PPE |
ESC002 |
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Electrical Work Site Safety |
ESC003** |
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Work Planning &
Documentation |
ESC004** |
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Safe Switching of
Electrical Equipment |
ESC005 |
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Electrical Contact Release |
ESC006 |
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LOTO |
ESC007 |
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Electrical Safety Practical
Application |
ESC008 |
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Capacitor
Safety |
SAF603B.KD |
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*
If you are required perform hazardous energy control or administrative/configuration
control, the LOTO Competency (ESC007 & ESC008) is required to be current.
**
ESC003 & ESC004 are still included in the QEW competency and are being
removed from LMS due to the implementation of ePAS. Credit will be given upon
request to maintain competency. |
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6.0
Performing Energized Work
Unless approved through an Energized Electrical Work Permit all electrical repair work must be performed de-energized and in an electrically safe work condition.
Performing energized electrical repair work, other than diagnostics, under an energized electrical work permit requires additional justification and is approved only in extraordinary circumstances and as a last resort.
Violation of these principles must be reported immediately to line management, the electrical Authority Having Jurisdiction (AHJ).
The electrical safe work practices prescribed in this manual are mandatory, unless specifically indicated as a recommended practice.
Any deviation or exemption from requirements in this manual requires approval from the electrical safety AHJ.
7.0
Refusal to Work
All personnel asked
to perform electrical work have a duty to refuse if they are not qualified or
if they feel they have not received the work planning and authorization,
training and equipment, and PPE specified to perform the work safely.
All personnel are asked to stop work in accordance with OSHA's Workers Right to Refuse Dangerous Work which empowers employees to stop any work activity that the employee deems to pose an immediate danger to others, and/or to suspend work to correct deficiencies or unsafe conditions that may pose an immediate danger.
8.0
Roles and Responsibilities
Note: Management
authority may be delegated to a task-qualified TJNAF employee at the discretion
of the responsible manager.
All personnel at Jefferson Lab have a
responsibility to ensure a safe work environment and stop work should it become
necessary to maintain that safety. Employees shall not reach blindly into areas
that might contain exposed electrical conductors or circuit parts where and
electrical hazard exist (penetrations, overheads, cable trays, panels, racks,
etc.). QEWs and QEW supervisors have an increased responsibility for electrical
safety and must read and understand their specific roles. Do not proceed with
electrical work practices if you do not understand the requirements of this
manual. Failure to do so may result in serious injury or death.
8.1 Anyone at Jefferson Lab:
1. Be able to request an inspection from a qualified electrical inspector.
2. Shall be aware of the electrical hazards in your workplace.
3. Shall perform work using electrical safe work practices with anything electrical (i.e. computers, electronic devices, extension cords, power strips, etc.).
4. Shall report electrical safety hazards to your Supervisor/Technical Representative /Sponsor.
5. Submit a Facilities Management Work Request if new, repair, or maintenance electrical work is needed (including installation of electrical outlets).
6. Report all cases of electric shock to Jefferson Lab Occupational Medicine Department (x7539).
7. Shall request an electrical hazard evaluation for a piece of electrical or electronics equipment for a specific electrical work task such as power strips, personal heaters or fans, extension cords, etc. If you are not sure, call ES&H for an Electrical Safety Inspection.
8.2 Qualified Electronic/Electrical Worker (QEW):
1. Ensure electrical training is current prior to work.
2. Wear appropriate Personal Protective Equipment (PPE).
3.
Be aware of
shock approach and/or arc flash protection boundaries.
4.
Select and use
appropriate PPE while exposed to electrical hazards. Refer to ES&H Manual Chapter
6230 Appendix B Electrical Personal Protective Equipment (PPE) Selection
Procedure.
5.
Wear no conductive
articles of jewelry or clothing that could present an electrical contact
hazard.
6. Ensure PPE is inspected, tested, and cared for in accordance with manufacturer’s instructions before each use.
7. Perform electrical repair or installations upon request and supervisor approval.
8.3 Qualified Electrical Inspector:
Perform Electrical Safety Inspections in accordance with the minimum requirements.
8.4 Supervisor/Technical Representative (TR)/Sponsor:
1. Ensure only trained and qualified individuals perform electrical work.
2. Ensure appropriate PPE is available to individuals.
3. Ensure compliance with safe electrical work practices.
a. TR also:
i. Ensure subcontractors assigned electrical work submit a safety plan that includes relevant electrical training, licensing, etc., of individuals working on-site, as required by their contract.
8.5 Facilities Management Electrical Engineer:
1. Provide electrical distribution equipment with arc flash labels marked with the available incident energy, arc flash boundary, and the nominal system voltage.
8.6 Electrical Safety Engineer:
1. Provide an electrical PPE evaluation, upon request, for shock and arc flash hazards.
2. Administer the lab-wide electrical rated glove change out every six months.
3. Provide electrical hazard evaluation for electrical equipment or an electrical work task upon request.
8.7 Electrical Authority Having Jurisdiction:
1. Provide a determination for “Electrical Code Equivalency Requests.”
2. Standing member of the Electrical Safety Committee.
8.8 Director, ESH:
1. Nominate a qualified individual for the position of Electrical Authority having Jurisdiction, in compliance with requirements.
8.9 Chief Operating Officer:
1.
Submit nomination for Electrical Authority Having
Jurisdiction to Thomas Jefferson National Accelerator Facility – Site Office
(TJSO) for acceptance.
2.
Upon TJSO acceptance, authorize the Electrical
Authority Having Jurisdiction appointment.
9.0
Electrical Safety Information
9.1
General
Electrical Safety
General Electrical Safety provides an overview of general electrical safe work practices to be used by everyone at Jefferson Lab. Some of the practices include power cords, ground-fault circuit interrupter (GFCI), wall/blind penetration, abandoned cable management practices, portable and vehicle-mounted generators, and portable and vehicle-mounted engine-driven welding machines. It is recognized that increased awareness of these practices helps maintain an electrically safe work environment.
Power cords connect devices to power sources. They include extension cords, power strips, uninterruptible power supplies (UPS), and small appliances. Everyone at Jefferson Lab shall adhere to the following:
a. Check cords for external defects prior to use.
b. Discard those that are damaged. Permanently disable the power source, by removing the cord end(s), prior to disposal.
c. Turn device(s) “off” before connecting or disconnecting power source.
d. Keep cords out of the line of traffic. If unavoidable, use cord covers to prevent trip hazards and physical damage.
e. Avoid “daisy-chaining” power strips into one into another
f. Extension cords can NOT be “daisy-chained.” OSHA 1910.303(b)(2) uses information from listed or labeled equipment and that they shall be installed and used in accordance with any instructions included in the listing or labeling. The Underwriter’s Laboratory (UL) Directory contains instructions that require UL-listed extension cords to be directly connected to a permanently installed receptacle. They are not to be series-connected to other extension cords.
g. The cord wire gauge must be sized adequately (10 or 12 gauge for construction application; 14 or smaller gauge shall not be used at Jefferson Lab) for the load to be served AND they are not over 100 feet in length.
h. Ensure that cords have adequate air circulation when in use.
i. Fully insert all prongs into an outlet.
j. Grasp or pull the plug, not the cord, to remove it from an outlet.
k. According to OSHA 1910.304, NEC Article 590, and NFPA70E (2015) 110.4, no extension cords (or temporary cords) shall be in use past 90 days, UNLESS inspected and certified (these can be certified by an Electrical Safety Inspector). The cords shall have an inspection sticker applied with the date when use over 90 days is needed.
l. An overcurrent device such as a breaker or GFCI shall be used, according to OSHA 1910.304(b)(3)(ii)(B).
m. Permanent equipment using extension cords shall not be used for more than 90 days. OSHA 1910.306(j)(3) says that a permanent cord, no longer than 3 feet shall be used as a cord and plug device.
n. Extension cords may NOT be ran through holes in walls, ceilings, or floors (OSHA 1910.305(g)(iii)). Cables entering enclosures containing devices requiring termination must be secured to the box with fittings designed for the purpose.
2. Build
Only Jefferson Lab qualified electrical workers are authorized to field-assemble power cords for specific use(s) using guidance from OSHA, NFPA, and NEC.
3. Repair
Only Jefferson Lab qualified electrical workers are authorized to repair power cords. The following criteria are used:
a. Determine whether repair is feasible/cost-effective. If not, properly dispose of the item.
b. Cords and ends are replaced with parts of equal or greater quality.
c.
Electrical tape (which includes liquid electrical tape)
is never used to cover or repair damage to the outer jacket insulation; when
the inner conductors are visible.
d. Repairs are checked to ensure conductors are connected to their proper terminal and for electrical continuity.
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NOTE: Nicks and
abrasions, which do not penetrate completely through the outer jacket, are
not considered a safety concern. Repair or replacement of the extension cord
would not be required. |
4. Types
a. Extension Cords
Extension cords are used to deliver power to a desired location on a temporary basis.
1. Use as a temporary power supply for no more than 90 days.
2. Unplug and store out of the line of traffic when not in use.
3. Must have 2 conductors, a ground, and strain relief.
4. May not be used in locations where they are likely to be in contact with water or other conductive liquids, OSHA 1910.334(a)(4). They shall be affixed to a high location out of the way of liquids and traffic.
b. Power Strips
Power strips, including strip plugs and surge suppressors, are used to provide power to multiple electronic devices at one time. Use the following safety guidelines:
1. Check the wattage rating to ensure compatibility with all devices connected to avoid overload.
2. Do not plug one power strip into another.
3. Power strips can be reset, one time, if no impeding failure is evident and the unit is not being overloaded.
4. Power strips or supplies are to remain above the ground level and mounted in applications other than office spaces. Many locations at the lab are wet at the ground level and this can cause a potential electrical hazard.
9.2
Electronic
Equipment
The following administrative controls shall be established when any
electrical/electronic equipment with a nominal system voltage of ≥ 50V
will be energized with engineered controls, such as protective covers or
interlocks, removed or disabled:
1. Equipment shall not be left unattended unless positive physical controls are in place to prevent unqualified persons from entering the limited approach boundary and the limited approach boundary is clearly marked with ESH approved shock/arc flash boundary tape.
2.
Equipment undergoing testing or maintenance while
energized requires an approved Energized Electrical
Work Permit (EEWP) unless all work will be performed outside the restricted
approach boundary of exposed conductors and circuits and the workers are not
exposed to increased likelihood of arc flash injury.
c. Approved electrical shock/arc flash boundaries
ES&H has approved the following boundary marker for use at Jefferson Lab as electrical safety boundaries. All shock/arc flash boundary tape will be 2.5” wide, red w/ white stripe tape with “Danger” in 2” black lettering. ES&H has purchased two versions of the barrier tape for laboratory use and are at the following locations:
1. Portable cones with retractable barrier tape
a. North/South LINAC
b. East/West ARC
c. Hall A, B, C, D
d. Test Building
e. Ted Building
2. Disposable barrier tape
a. Facilities
b. North/South LINAC
c. East/West ARC
d. Test Building
e. TED Building
Approved barrier tape will be available to qualified electrical workers from the stock room as requested for fieldwork.
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Barrier Tape
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Portable
Cones
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d. Uninterruptible Power Supply (UPS)
UPS (desktop sized) is a battery backup unit that supplies power when there is a sag in the normal 120 VAC power. These units have a potential for shock, even when the power cord is disconnected from the wall outlet, due to stored energy. Use the following safety guidelines:
1. Determination of Replacement
Contact the Computer Center (x7155) if assistance is needed to determine whether to replace the batteries or the unit. (If battery replacement is feasible, the work is to be done by a qualified electrical worker.)
2. Purchase
Through Jefferson Lab’s WebStock system.
3. Disposal
Use Jefferson Lab’s Property Movement, Disposal or Transfer System:
Step 1: Click on “Submit disposal/excess of "administrative" property not on your inventory”
Step 2: Complete the “Property to be excessed” form to generate a work order for the UPS to be picked up for disposal.
e. Ground-Fault Circuit Interrupter (GFCI – Class A)
A GFCI is a device intended for the protection of personnel against electric shock. A Class A GFCI device de-energizes a circuit within an established period of time when current to ground exceeds approximately 4-6 milli-amps (mA). GFCIs at the lab come in two different configurations; 1) as permanently installed wall receptacles or circuit breakers, or 2) as portable listed cord sets that incorporate ground-fault circuit-interrupter protection for personnel.
A GFCI is required:
1. In specific building/facility locations (other than dwelling units) as specified by the National Electrical Code (NFPA 70):
a. Bathrooms
b. Kitchens
c. Rooftops
d. Outdoors
e. Sinks – where receptacles are installed within 6 feet of the outside edge of the sink
f. Indoor wet locations
g. Locker rooms with associated showering facilities
h. Garages & service bay type locations
2. For use with:
a. Cord-and-plugged vending machines (installed after 1/1/2005).
b. Electric drinking fountains (installed after 1/1/2008).
c. Portable generators (15kW or smaller) – for all 125/250-volt single-phase 15-, 20-, and 30-ampere receptacles that are in use by personnel.
3. With all 125-volt, single-phase, 15-, 20-, & 30-ampere receptacles outlets that are in use by personnel. The intent is to provide GFCI protection to a person working with powered (cord-and-plug) hand tools.
a. When using an extension cord, the GFCI device shall be installed before (ahead of) the extension cord in order to maximize the protection provided by the GFCI. A GFCI device does not protect against a fault in wiring supplying the GFCI device.
4. Testing GFCI
Jefferson Lab recommends that GFCI receptacles be tested in accordance with manufacturer’s recommendations; during safety warden inspections, and before using a temporary device that requires GFCI protection.
5. Types of GFCIs
a. Receptacle
A GFCI receptacle is used in place of a standard outlet (see Figure 1. GFCI Receptacle). These are generally found near water sources (e.g., kitchens, bathrooms, etc.).
Figure 1: GFCI Receptacle
b. Portable
A portable GFCI is used to provide temporary power from an unprotected outlet. They are tested prior to each use (see Figure 2. Portable GFCIs).
Figure 2. Portable GFCIs
c. Circuit Breaker
A GFCI circuit breaker controls an entire circuit on the main panel board. In the event of a ground fault, short circuit, or overload the breaker trips and shuts off electricity to the circuit. Only those persons who have been trained by a qualified electrical worker are authorized to reset GFCI circuit breakers. Contact Facilities Management (x7400) for assistance if electricity is interrupted to your work area.
e. Switching (or resetting) Electrical Devices
Only those persons, who have been trained by a qualified electrical worker for the specific area, or equipment, are authorized to turn on/off or reset a circuit breaker. A minimal level of PPE, which varies between equipment types, is required during the switching operation. Electrical devices (equipment specific resets, surge suppressors/multi-outlet strips…) can be reset once, if no impeding failure is evident.
1. Response to an Electrical Overcurrent Protection Device (ex. Circuit breaker) Fault
a. Assess the situation and determine that there are no obvious failure(s)
b. If unsure that a failure still exists then contact Facilities Management.
c. Shed the load to the extent possible if applicable
d. Clear person(s) from the immediate area(s)
e. Don PPE
f. Reset the overcurrent protection device
g. If there is a second trip then further investigation is warranted; contact Facilities Management or another field electrician.
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Exception: During an emergency, anyone at Jefferson Lab may turn on or off a circuit breaker or disconnect switch as long as doing so does not put them at risk and are trained to do so. |
f. Capacitor Safety (storage & recycle)
Short capacitors in storage with a conductor securely fastened to the terminals and leave in place until the capacitors are returned to service. If a capacitor is scheduled for disposal, the short circuits shall remain in place.
g. Electrical Equipment Labeling (directory)
Panel boards, switchboards, and motor control centers are required to have an attached circuit directory (panel schedule) which clearly and legibly identifies the loads served. Spare circuits shall be identified as spares.
Equipment permanently
connected to an AC source must have the equipment disconnect location clearly
identified. Equipment which is fed from multiple power sources must clearly
identify all sources of power.
All equipment shall have an
Inspection Label for safety operation from ESH. This will be a yearly inspection. All power
panels, disconnects, rack power and equipment (including electronics equipment),
receptacles, motor controllers, portable power, and other electrical and
electronic feeds will be inspected for safety. Additional information about
Electrical Safety Inspections and labels, refer to ES&H
Manual Chapter 6230- Electrical Safety Manuals Appendices- Appendix A
Electrical Safety Form and Information.
h. Electrical Equipment Labeling (Arc Flash and Shock Hazard)
Electrical equipment that poses a shock and/or arc flash hazard and is likely to require examination, adjustment, servicing, or maintenance while energized shall be field marked with a label containing all the following information:
a. Nominal system voltage
b. Arc flash boundary
c. At least one of the following:
1. Available incident energy and the corresponding working distance OR the arc flash PPE category in NFPA 70E (2015 Edition), Table 130.7(C)(14)(A)(a) or NFPA 70E (2015 Edition), Table 130.7(F) for the equipment
2. Minimum arc rating of clothing
3. Site-specific level of PPE
The owner of the electrical equipment shall be responsible for the documentation, installation, and maintenance of the field-marked label.
11.0 General Maintenance Requirements
Electrical equipment shall be maintained in accordance with manufacturers’ instructions or industry consensus standards to reduce the risk associated with failure. The maintenance requirements are those that are directly associated with employee safety. The equipment owner or the owner’s designated representative shall be responsible for maintenance of the electrical equipment and documentation.
a. Abandoned Cable Management Practices
Abandoned cable is identified as a cable that is not terminated at both ends at equipment and is not identified for future use with a tag. All accessible portion of abandoned cable shall be removed. If a cable, or portion thereof, is unable to be removed or is selected to remain for future use then the cable should be identified with a cable tag and the cable should be insulated from contact with other live electrical wiring or devices.
b. Wall/Blind Penetration
Jefferson Lab buildings have electrical conduit, piping, and data/communications cable within their walls and imbedded in floor slabs. It also has an extensive buried utility system on-site. Any work requiring penetration into walls, a floor, or soil, requires a Facilities Management’s Excavations and Blind Penetrations into Walls & Floors. Submit a Facilities Management Work Request to ensure compliance with this requirement.
c. Portable and Vehicle-Mounted Generators
GFCI protection is required for all 125-volt, single phase, 15-, 20-, and 30- ampere receptacles on portable and vehicle-mounted generators. All other receptacle types require either GFCI protection or follow the National Electrical Code Equipment Grounding Conductor Program.
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NOTE: The rules for grounding depend on the specific use and design of the auxiliary power generator. Therefore, if available, always refer to the manufacturers’ operation manual for further instructions. |
d. Electrical Code Equivalency Determinations
When compliance with electrical codes or standards cannot be satisfied, Jefferson Lab allows alternative mitigation to be considered as long as it provides the same or greater level of protection. ES&H Manual Chapter 6220 Non-NRTL Equipment Design and Construction provides the process steps for initiating a request, reviewing a request, and approving the request to ensure an adequate level of safety.
e. Electrical Authority Having Jurisdiction
This section outlines the responsibilities of the Electrical Authority Having Jurisdiction (EAHJ) position at Jefferson Lab. The EAHJ provides electrical codes clarification or equivalency determinations when requested.
The
EAHJ’s authority does not extend to regulation, standards or codes that fall
under the regulatory authority of Occupational Safety and Health Authority
(OSHA) unless incorporated by reference and includes an EAHJ, or similar,
provision.
Perform
the process steps for this procedure in coordination with ES&H Manual
Chapter 6220 Non-NRTL Equipment Design and Construction Program. Also see the 6220 Manual Supplement-
Construction and Modification Requirements for Custom and Non-NRTL Electric
Equipment.
1.
Receive Request
Step 1:
The EAHJ receives
written requests (e-mail) for a Code Clarification or an Electrical
Code Equivalency Form for an Equivalency by
anyone at Jefferson Lab.
Step 2:
The EAHJ
determines the appropriate response following the
2.
Determine Clarification or Equivalency
Step 1: Is there a
code that applies?
If yes go to Step 2.
If no then provide
response to the requestor explaining the determination that no current code
applies.
Step 2:
Is
there a Formal Interpretation that provides an explanation of the meaning or
intent of the Technical Committee on the specific NFPA standard in question?
If yes then provide
Clarification to the requestor.
If no then go to Step 3.
Step 3:
Will
following the code create additional hazards, increased risk, or be infeasible?
If no then provide Clarification to the requestor.
If yes
then it is an Equivalency.
Provide
equivalency requirements per ES&H Manual Chapter
6230- Electrical Safety Manual Appendices- Appendix C Electrical Code
Equivalency Procedure including documenting activities within the Jefferson
Lab Corrective Action Tracking System (CATS).
Step 4:
Report Clarification/Equivalency to Electrical
Safety Committee for documentation.
f. Electrical Safety Inspection Procedure
Electrical equipment meeting the criteria stated within the scope of ES&H Manual Chapter 6230- Electrical Safety Manual Appendices- Appendix C Electrical Equipment Safety Inspection Procedure, require a safety inspection prior to use. This procedure provides Jefferson Lab’s minimum requirements for a qualifying electrical safety inspection and complies with the requirements of Occupational Safety and Health Administration (OSHA) 29 CFR 1910.399 Electrical.
g. Electrical Personal Protective Equipment (PPE) Selection Procedure
Electrical PPE is required for work that exposes individuals to electrical hazards such as shocks and arc flash. There are different levels of electrical PPE available. ES&H Manual Chapter 6230- Electrical Safety Manual Appendices- Appendix A Electrical Personal Protective Equipment provides guidance for selecting the appropriate electrical PPE for the work being performed.
12.0
References
DOE
10 CFR 851, Worker Safety and Health Program
DOE Order 420.1c, Facility Safety
NFPA 70, National Electric Code (NEC), 2017 Edition
NFPA 70E, Standard for Electrical Safety in the Workplace, 2015 Edition
OSHA 29 CFR 1910.7, Definition and
requirements for a nationally recognized testing laboratory
OSHA 29 CFR 1910.132, Personal Protective
Equipment
OSHA 29 CFR 1910.137, Electrical protective
devices
OSHA 29 CFR 1910.147, The Control of
Hazardous Energy (Lockout/tagout)
OSHA 29 CFR 1910.269, Subpart R, Electric
Power Generation, Transmission, and Distribution
OSHA 29 CFR 1910 Subpart S (.301-.399), Electrical
(General Industry)
OSHA
29 CFR 1926 Subpart K (.400-.449), Electrical (Construction)
OSHA 29 CFR 1926 Subpart V (.950-.968), Power
Transmission and Distribution
DOE-HDBK-1092-2013, DOE Electrical Safety
Handbook, 2013 Edition
IEEE C2, National Electrical Safety Code (NESC), 2017
Edition
NFPA 70B, Recommended Practice for Electrical Equipment
Maintenance, 2016 Edition
NFPA 79, Electrical Standard for Industrial Machinery, 2015
Edition
13.0
Revision Summary
Revision 4.3 03.07.2024-
updated Table 1 to clarify training requirements; updated Note in section 8.0;
changed TPOC from RAdrover to JReisbeck;
general format fixes by ES&H Manual Editor (JAllen).
Approved by RMay, Director, ES&H Division, via
email 03.07.2024.
Revision 4.2 10/26/22- changed TPOC from TFitzgerald to RAdrover
Revision 4.1 07/12/21- Updated training table, hyperlinks, and references.
Revision 4.0 01/29/21- Restructured the format and flow of the ES&H Manual 6200 and removing the appendices. Director and ES&H Director approved.
Revision 3.3 11/14/18 - Removed reference to deleted content ES&H Manual Chapter 6200 Appendix T4 Electrical Hazard Labeling; added SAF603R to Table 1 per CATS#STR-2017-12-03-01
Revision 3.2 05/11/17 - Updated Table 1 to reflect
current laboratory operations
Periodic Review 10/05/16 - No changes per TPOC
Revision 3.1 11/03/14 - Edits per T.Kujawa. Chapter appendices renumbered to correlate with appendices noted under 4.0 Appendices (T7 no longer exists). No substantive changes.
Revision 3.0 10/31/13 - Qualifying Periodic Review; updated to clarify roles of Electrical Engineer and Electrical Authority Having Jurisdiction; addition of Appendix T6 and Appendix T7.
Revision 2.1 11/19/10 - Added general electrical safe work practices for portable and vehicle-mounted generators to Appendix T4 per Todd Kujawa.
Revision 2.0 05/10/10 - Added Appendix T4 General
Electrical Safety and Appendix T5 Electrical Hazard Labeling.
Revision 1.0 10/01/09 - Updated to reflect current laboratory operations
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ISSUING AUTHORITY |
TECHNICAL POINT-OF-CONTACT |
APPROVAL DATE |
NEXT REVIEW DATE |
REVIEW CYCLE |
rev |
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ES&H Division |
03.07.2024 |
03.27.2031 |
3 years |
4.3 |
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