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COR-3S10-PR
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Electrical Safety Protocol
Overview
Purpose
This Devon Energy Protocol establishes minimum safe work practices and electrical safety management
requirements. Employees must comply with this protocol as well as all applicable local, state and federal
regulations.
Scope
This protocol applies to all Devon operated equipment, facilities and all Devon employees. Contractors will have
their own document that meets or exceeds Devon’s Electrical Safety Protocol.
Table of Contents
1.0 RESPONSIBILITIES .................................................................................................... 2
2.0 TERMS AND DEFINITIONS ........................................................................................... 2
2.1 Electrical Safety Terms and Definitions ..................................................................... 3
2.2 General Terms and Definitions ................................................................................ 4
3.0 PROTOCOL ............................................................................................................ 5
3.1 Electrical Safety Requirements ............................................................................... 5
3.2 Portable Powered Hand Tools ................................................................................. 6
3.3 Extension Cords ................................................................................................. 6
3.4 Overcurrent Protection and Circuit Breaker Safety ....................................................... 7
3.5 Pull and Junction Box Requirements ........................................................................ 7
3.6 Bonding and Grounding ............................................................................... ………...7
3.7 Portable Generator Safety ..................................................................................... 8
3.8 Work Clearances for Overhead High Voltage Power Lines Portable Powered ......................... 8
3.9 Risk Assessment .................................................................................................. 9
3.10 Personal Precautions and Procedures ..................................................................... 10
3.11 Contractor Participation .................................................................................... 13
3.12 Equipment Labeling ........................................................................................... 14
3.13 Electrical Area Classification Requirements ............................................................. 15
3.14 Housekeeping and Cleaning ................................................................................. 15
3.15 Electrical Review .............................................................................................. 15
3.16 Procurement and Design ..................................................................................... 16
4.0 RECORDKEEPING ................................................................................................... 16
5.0 TRAINING REQUIREMENTS ....................................................................................... 17
6.0 REFERENCES ........................................................................................................ 18
Appendix A – Shock Risk Assessment ............................................................................. 19
Appendix B – Approach Boundary Table ......................................................................... 28
Appendix C – HRC Rated Clothing and Other PPE .............................................................. 31
Appendix D – PPE Inspection and Frequency ................................................................... 32
Appendix E – Electrical Glove Pre-Use Inspection Process ................................................... 35
Appendix F – Electrical Safety Labeling Examples ............................................................. 36
Attachment A – Approval, Review, and Modification history ................................................ 39
Attachment B – Physical Barrier Example for Electrical Lines (Goal Post) ................................ 40
Attachment C – Arc Flash Request Form ........................................................................ 41
Attachment D – Electrical Safety Permit ........................................................................ 42
Attachment E – Electrical Safety Analysis (ESA) Form ........................................................ 45
Attachment F – Electrical Safety Audit Form ................................................................... 47
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Electrical Safety Protocol
1.0
RESPONSIBILITIES
Division/Business Unit Leadership

Reinforce adherence to this protocol and provide resources for application of the protocol.
 Ensure employees responsible for electrical duties receive required training.
Line Supervisor

Know how this protocol applies to personnel in their area of responsibility.

Ensure employees have training, skills, knowledge and understanding to comply with this protocol.
 Check periodically to ensure the requirements of this protocol are being met.
Environmental, Health and Safety

Monitor compliance through the audit process.
 Provide technical resources and tools for protocol application.
Devon Employees

Adhere to the requirements of this protocol.

Identify and report gaps in this protocol.
 Complete required training.
Contract Company Representative

2.0
2.1
Comply with regulatory requirements and follow the Devon EHS protocol.
TERMS AND DEFINITIONS
Electrical Safety Terms and Definitions:
Approved — any equipment, procedures, or PPE that meets or exceeds recognized industry standards.
Arc Flash Risk Assessment – A study investigating a worker’s potential exposure to arc flash energy,
conducted for the purpose of injury prevention and the determination of safe work practices, arc flash
boundary, and the appropriate levels of personal protective equipment.
Arc Rating — the maximum energy resistance demonstrated by a material (or layered system of
materials) prior to breaking open or at the onset of a second-degree skin burn. Arc rating is normally
expressed in cal/cm2.
Barricade — a physical obstruction that is intended to prevent contact with equipment, live parts, or to
prevent unauthorized access to a work area.
Bonding or Bonded — the permanent joining of metallic parts to form an electrically conductive path
that ensures electrical continuity and the capacity to conduct safely any current likely to be imposed.
The “permanent joining” can be accomplished by the normal devices to fasten clean, non-corroded parts
together. Machine screws, bolts, brackets, or retainers necessary to allow equipment to function
properly.
Boundary, Limited Approach - An approach limit at a distance from an exposed energized electrical
conductor or circuit part within which a shock hazard exists.
Boundary, Restricted Approach - An approach limit at a distance from an exposed energized electrical
conductor or circuit part within which there is an increased likelihood of electric shock.
Circuit Breaker (CB) — a device designed to open and close a circuit by non-automatic means and to
open the circuit automatically on a predetermined over-current without damage to itself when properly
applied within its range.
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Electrical Safety Protocol
Class I area — an area where flammable gases or vapors are, or may be, present in the air in quantities
sufficient to produce explosive or ignitable mixtures.
Class I, Division 1 area —A location in which ignitable concentrations of flammable gases or vapors are
expected to exist under normal operating conditions or where faulty operation of equipment or
processes might simultaneously release flammable gases or vapors and also cause failure of electrical
equipment.
Class I, Division 2 area — An area in which flammable gases or vapors may be present, but normally are
confined within closed systems: are prevented from accumulating by adequate ventilation, or the
location is adjacent to a Division 1 location form which ignitable concentrations might occasionally be
communicated.
Class II area — an area that is hazardous because of the presence of combustible dust.
Class III area — an area that is hazardous because of the presence of ignitable fibers.
Conductive — capable of carrying electric current.
De-energized — free from any electrical connection to a source of potential difference and from
electrical charge, not having a potential different from that of the earth.
Double Insulated – an electric tool with insulated internal wiring and an insulated outer casing.
Electrical Hazard — a dangerous condition in which contact or equipment failure can result in electric
shock, arc flash burn, thermal burn, or blast.
Electrically Safe Work Condition — a state in which an electrical conductor or circuit part has been
disconnected from energized parts, locked/tagged in accordance with established standards, tested to
ensure the absence of voltage and grounded if determined necessary.
Enclosed — surrounded by a case, housing, fence, or wall(s) that prevents persons from accidentally
contacting energized parts.
Energized — electrically connected to or having a source of voltage.
Energized Equipment or Parts — a voltage is present in equipment or parts that can cause a current, so
there is a possibility of electrical shock. Other safety related work practices shall be used to protect
personnel who may be exposed to the electrical hazards involved.
Explosion-Proof Equipment — a piece of electrical equipment (conduit, junction box, motor, etc.)
enclosed in a case that is capable of withstanding an explosion of a specified gas or vapor which may
occur within it and preventing the ignition of a specified gas or vapor surrounding the enclosure by
sparks, flashes or explosion of the gas or vapor within which operates at such an external temperature
that it will not ignite a surrounding flammable atmosphere.
Fault — a defect or electrical breakdown of any component, spacing, or insulation that causes excessive
current to flow and possible equipment failure.
Flame-Resistant (FR) — the property of a material whereby combustion is prevented, terminated, or
inhibited following the application of a flaming or non-flaming source of ignition, with or without
subsequent removal of the ignition source.
Flash Hazard - a dangerous condition associated with the release of energy caused by an electric arc.
Ground Fault Circuit Interrupter (GFCI) — a device whose function is to interrupt the electric circuit
(breaker, receptacle, or portable cord set) to the load when a fault current to ground exceeds some
predetermined value that is less than that required to operate the overcurrent protective device of the
supply circuit.
Grounded —Connected (connecting) to ground or to a conductive body that extends the ground
connection.
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Electrical Safety Protocol
Intrinsically Safe Equipment - a safe piece of equipment and associated wiring by design of its physical
and electrical characteristics, which will not produce an arc or spark with sufficient energy, or develop
sufficient temperatures, to allow ignition of a specified gas or vapor.
Isolation — a disconnection and separation of electrical equipment from all source(s) of supply in a way
that the disconnection and separation is complete and secure.
Ohm - The unit of measure for electrical resistance or impedance, one ohm equals one volt per one
ampere.
Qualified Person — a person who has been trained to avoid electrical hazards when working on or near
exposed energized parts. This classification of qualified personnel are responsible for developing and
implementing safe electrical work procedures, preparing energized electrical work permits, approving
energized electrical work permits, approving the selection and use of Electrical Safety Work equipment
and clothing, and verifying electrical safety equipment chosen for specific tasks is adequate for the
abatement of the live electrical hazard.
Raceway - is an enclosed conduit that forms a physical pathway for electrical wiring.
Service - a conductor and equipment for delivering energy for the electricity supply system to wiring
system of the premised served.
Shock Risk Assessment - Shock hazard analysis shall determine the voltage to which personnel will be
exposed, boundary requirements, and the PPE necessary to minimize the possibility of electric shock to
personnel.
Underwriters Laboratory/Underwriters Laboratory of Canada (UL/ULC) - An organization that is a
global independent safety science company that certifies, validates, tests, inspects, audits, and advises
governmental agencies on creating standards.
Unqualified Person — a person who has little or no training regarding electrical hazards and may not be
exposed to energized parts. The Unqualified Person must be familiar with any electrical related safety
practice that is necessary for their safety.
Voltage, High – voltage as 600 v. and greater
Voltage, Low - Circuits with a nominal voltage of less than or equal to 50 volts, in which this program
does not apply.
Voltage, Nominal - A nominal value assigned to a circuit or system for the purpose of conveniently
designating its voltage class (e.g., 120/240 volts, 480/277 volts, 600 volts). The actual voltage that a
circuit operates can vary from the nominal within a range that permits satisfactory operation of
equipment.
2.2
General Terms and Definitions
Appropriate Leader — the level of management necessary to approve documents, changes to documents
and deviation for a given Division and/or Functional Group.
Approval Date — date when a document has been finalized and approved by EHS VP or appropriate
leader via electronic signature on Attachment A.
Area — individual operating fields or components that collectively comprise a Region, Areas
normally include an area office.
Area Office — a field office with assigned employees that support an area. (e.g., Bridgeport, Riverton,
etc.).
Business Unit — individual components that collectively comprise a Division. Business Units may
also be referred to as Basins.
Contract Company Representative — a contractor who is assigned responsibilities and oversight for a
specific task that requires adherence to Devon EHS Procedures.
Division — the division operations of Devon are Canada, Corporate, Marketing & Midstream and U.S.
Field EHS — a titled position that provides EHS guidance and support within a Division.
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Electrical Safety Protocol
Enterprise Classification Structure — part of Devon’s strategic plan for managing information assets.
The ECS is the published list of all records classes, the period of time for retaining each and their
designated disposition.
Facility — a collection of structures, piping, valves, vessels, tanks, compression, and processing
equipment located in close geographic proximity, that are involved directly in the development,
production, processing or delivery of oil and gas to market (e.g., a tank battery, drill site, well-site,
compressor station, pipeline, and gas plant).
Facilities/Pipeline – an organization within Devon responsible managing projects (e.g., capital projects,
renovation, expansion, etc.). This includes managing the energy distribution portion of the electrical
installation and completion of arc flash studies.
Line Supervisor — a titled position that has assigned authority and responsibility for financials,
production, maintenance, projects and personnel for a defined area. In Devon, this could be any
Supervisor, Superintendent, Foreman or Assistant Foreman.
Person In Charge (PIC) — a person that has been authorized by Devon to perform specific tasks to
comply with Devon EHS Protocols and/or regulatory requirements related to EHS. The PIC is defined
in all procedures in the second column of the protocol section.
Region / District — individual components that collectively comprise a Division.
Standard — an Environmental Health (EHS) and Safety Managements System document that defines what
information corporate and division EHS procedures must include for compliance with applicable
regulation.
3.0
PROTOCOL
3.1
Electrical Safety Requirements
Step
Person In
Charge (PIC)
Action
3.1.1
Assign only Qualified Person(s) to work on or near exposed energized parts of
electrical equipment that operate at voltage of 50 volts or more to ground.
Lock buildings, rooms and enclosures that contain equipment of 600 volts or greater.
3.1.3
3.1.4
Line
Supervisor
Line
Supervisor
Employee
Employee
3.1.5
Employee
3.1.6
3.1.7
Employee
Employee
3.1.8
Employee
3.1.9
3.1.10
Employee
Employee
3.1.11
Employee
3.1.2
Report all electrical hazards to the PIC.
Ensure all portable ladders used in electrical service will have non-conductive side
rails (e.g., fiberglass) and non-slip feet. No metal ladders will be used around
electrical equipment.
Do not render interlocks inoperative by removal, modification or destruction, except
by a Qualified Person during repair or maintenance.
Avoid contact with electrical power lines, including downed power lines.
Avoid being near switch boxes, pumping units, electric motors or other electrically
operated equipment during an electrical storm.
Never use water on an electrical equipment fires. When possible, electrical
equipment must be de-energized before fighting a fire.
Never work on energized equipment in standing water without additional precautions.
Stand to the side, use an open hand and turn head away when operating or closing a
disconnect switch.
Ensure adequate lighting is provided for all electrical work. Personnel shall not reach
blindly into areas which may contain energized parts, or where an obstruction
precludes observation of the work to be performed.
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Electrical Safety Protocol
3.2
Portable Electric Tools and Equipment
Step
Person In
Charge (PIC)
Action
3.2.1
Employee
3.2.2
Employee
Use portable electric tools with a GFCI when working in:
 Wet or damp locations
 Confined space work
Follow the Devon Hot Work Protocol when using portable electric tools on tanks,
lines, vessels, in compressor stations or other areas where flammable gases and
vapors may be present, or within an electrically classified area.
3.2.3
Employee
3.2.4
Employee
3.2.5
Employee
3.2.6
Employee
3.2.7
Employee
3.2.8
Employee
3.3
Extension Cords
Step
Person In
Charge (PIC)
Action
3.3.1
Employee
3.3.2
Employee
3.3.3
Employee
3.3.4
3.3.5
Employee
Employee
Use extension cords to provide temporary power only. Surge protectors and power
strips are NOT considered extension cords and may not be connected in series or used
in place of extension cords.
Use extension cords that are Underwriters Laboratory/Underwriters Laboratory of
Canada (UL/ULC) approved and suitable for conditions of use and location.
Inspect visually before use for external defects and evidence of possible internal
damage. Remove from service if there is evidence of damage to the cord, until the
cord is repaired and tested.
Do not use extension cords for raising or lowering equipment.
Do not fasten extension cords with staples or hang in a manner that could damage the
outer jacket/insulation.
Use portable electric tools and equipment that are Underwriter Laboratory (UL)/
Underwriters Laboratories Canadian (ULC) listed, double insulated or grounded
through a third wire.
Visually inspect all electric tools and equipment before each use for external defects
and evidence if possible internal damage (deterioration or inadequate insulation,
defective cords, etc.).
Remove from service and tag damaged electric tools and equipment until repaired or
replaced.
Note: Taped splices in electric cords are not considered properly repaired and
must be removed.
Disconnect the power supply source before performing any repairs or maintenance on
the equipment.
Handle all portable electric tools and equipment in a manner that does not cause
harm to personnel or damage the equipment.
 Do not carry energized equipment with fingers placed on the trigger.
 Do not raise or lower by the power cord.
Follow the requirements listed below when connecting attachment plugs:
 Ensure hands are dry when plugging and unplugging portable equipment.
 Handle energized plug and receptacle connections with insulating protective
equipment if the condition of the connection could provide a conducting path to
the worker’s hand (for example, a cord connector is wet from being immersed in
water).
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Electrical Safety Protocol
3.3.6
Employee
Protect cords from damage (e.g., rubber covers, tape, etc.) when in use where cords
can be pinched or severed.
Temporary electrical cords will not be used as permanent installations.
Do not remove the ground plug or alter extension cords. Removing the ground
grounding prong prevents proper grounding with the circuit.
Cover extension cords by a cord protector or taped to the floor when they extend
into a walkway.
Reeling, coiling or otherwise gathering of extension cords while energized is not
allowed.
3.3.7
3.3.8
Employee
Employee
3.3.9
Employee
3.3.10
Employee
3.4
Overcurrent Protective Devices
Step
Person In
Charge (PIC)
Action
3.4.1
Employee
3.4.2
Qualified
Person
Do not reset tripped breakers more than once per day when trained as an unqualified
employee. A qualified electrician must be contacted to investigate the origin of the
overcurrent if the problem continues.
Determine what caused the breaker to trip, which includes examining the equipment,
before re-energizing the circuit by examining both the equipment and the circuit
before making any appropriate repairs.
3.4.3
Qualified
Person
Examine the connected equipment if the operation of the device was the cause of the
fault condition.
Fuse and Circuit Breaker Safety
Step
Person In
Charge (PIC)
Action
3.4.4
Qualified
Person
Provide overload protection (fuses or circuit breakers) to protect the circuit’s
maximum current carrying capacity (e.g., a 30 amp fuse must not be used on a 20
amp circuit).
3.4.5
Qualified
Person
3.4.6
Employee
Use insulated fuse puller rated for the voltage to remove or install fuses.
Note: Fuses equal to or greater than 50 volts will be changed by qualified
personnel.
Communicate feeder and branch circuit breaker trips to the line supervisor.
3.5
Pull and Junction Box Safety Requirements
Step
Person In
Charge (PIC)
3.5.1
Line
Supervisor/
Employee
Design and maintain the area around electric panels so personnel are not required to
stand in water while operating switches.
3.5.2
Qualified
Person
Mark equipment and circuit disconnects legibly to indicate the equipment or
circuit to which it applies. Additionally, “ON” and “OFF” shall be clearly
distinguishable.
3.5.3
Qualified
Person
Ensure that electrical box covers and bolts have been replaced and tightened
upon completion of work.
Action
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Electrical Safety Protocol
3.6
Bonding and Grounding
3.6.1
Line
Supervisor
3.6.2
Line
Supervisor
Verify proper bonding and grounding for equipment, raceways, cable trays, and
enclosures are maintained to ensure electrical continuity.
Note: The grounding rod to stationary equipment will ensure that 25 ohms of
resistance or less is achieved.
Ensure all stranded metal and metal equipment on location is bonded together and
grounded to a single continuous system unless otherwise specified.
3.6.3
Line Supervisor
Ensure bonding clamps will be UL/ULC approved.
Verify all metal objects on fiberglass tanks are bonded together. The fiberglass tank
will be grounded or bonded to the adjacent steel tank.
3.6.5
Line Supervisor Ensure an in-tank static drain to each fiberglass tank likely to contain a flammable
mixture to bleed off static charge.
Bonding and Grounding of Portable Tanks, Trucks, etc.
3.6.6
Line Supervisor Ensure bonding cable is attached prior to loading tank truck with flammable material.
3.6.4
Line Supervisor
3.6.7
Line Supervisor
All metal and nonconductive containers (e.g., barrels, totes, cans, etc.) will be
bonded to the filling system when filled with flammable material.
3.6.8
Line Supervisor
Ground all portable frac tanks prior to filling with flammable material.
3.7
Portable Generator Grounding
Step
Person In
Charge (PIC)
Action
3.7.1
Qualified
Person
Install grounding rods to portable generators.
Note: Portable generators on vehicles need not be grounded. Light plants or
generators with only generator – mounted equipment (e.g. lights) and / or
plug/cord connected devices (such as tools) also do not need to be grounded.
3.8
Work and Travel Clearances for Overhead High Voltage Power Lines
Step
Person In
Charge (PIC)
Action
3.8.1
Line
Supervisor
Locate, identify, and communicate existing overhead electrical hazards during pretask tailgate safety meetings.
3.8.2
Line
Supervisor
While in transit, maintain a minimum 4 foot clearance with vehicles, equipment and
loads of material traveling under power lines.
 Specific to drilling, complete a route survey and detailed route assessment.
Assessment should identify obstructions and hazards to normal and oversized
loads, such as overhead power lines, bridges, overpasses and cattle guards for
each route (see Devon Rig Move Hazard Mitigation Procedure for additional
details).

If proper clearance cannot be maintained, the line must be de-energized and/or
raised by a qualified, licensed electrician, or an alternate route must be
identified and used. If the line cannot be raised or de-energized, and an alternate
route is not available; a risk assessment with written approval from the
responsible Devon Operations Manager and notification to the Operations Vice
President and EHS Manager is required prior to proceeding.
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Electrical Safety Protocol
3.8.3
Qualified
Person
Note: only qualified electrical employees may use tools such as hot sticks to move
or de-energize overhead electrical lines.
While operating on site, de-energize overhead electrical lines when any equipment
with a boom, mast or rotating arm is planned to come within 10 feet of electrical
lines up to 50 kV (voltages exceeding 50kV see chart below). If the line cannot be deenergized a risk assessment with written approval from the responsible Devon
Operations Manager and notification to the Operations Vice President and EHS
Manager is required prior to proceeding.
 The PIC must be on site when individuals are working within 10 feet of
energized overhead power lines.
Note: For overhead power lines greater than 50kv the distance chart below must
be followed:
 50kV to 200kV – 15ft (4.6m) Clearance
 200kV to 350kV – 20ft (6.1m) Clearance
 350kV to 500kV – 25ft (7.6m) Clearance
 500kV to 750kV – 35ft (10.7m) Clearance
 750kV to 1000kV- 45ft (13.7m) Clearance
1000kV - the minimum clearance distance must be established by the utility
owner/operator or registered professional engineer who is a qualified person with
respect to electrical power transmission and distribution.
3.8.4
Line Supervisor
Do not park temporary equipment or store material underneath or within 15 feet of
energized power lines.
3.8.5
Line Supervisor
Ensure cones, goal posts (see Attachment B) or other warning markers are installed 15
feet from the energized electric lines running across or parallel to the work site.
3.8.6
Employee
Use non-conductive tag lines to guide and position suspended loads. Tag lines must be
of sufficient length to keep workers out of fall path.
3.8.7
Employee
Stop work if unsafe conditions are present.
3.9
Risk Assessment
Step
Person In
Charge (PIC)
Action
Arc Flash Risk Assessment
3.9.1
Line
Supervisor
Ensure that the location has a completed risk assessment (Arc Flash and Shock Risk
Assessment) for 480 volts and above.
3.9.2
Line
Supervisor
If a risk assessment has not been completed within the last five years, complete the
Request for Arc Flash Services Form (Attachment C).
3.9.3
Facilities/
Pipeline
Complete a comprehensive electrical Arc Flash Risk Assessment from all power
sources rated 480 volts or greater that may include one or more of the following:



Fault Current / Short Circuit Study
Protective Device Evaluation Study
Protective Device Coordination Study
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Electrical Safety Protocol
3.9.4
Facilities/
Pipeline
Conduct Shock Risk Assessment for the electrical distribution system from all power
sources rated 480 volts or greater (see Appendix A).
Note: The Arc Flash and Shock Risk Assessment will provide product data to be
used for system studies with computer software programs based on NFPA 70E
protection boundary equations to calculate the necessary flash protection
boundary distances and incident energy to determine the minimum PPE
requirements.
Note: Until the Arc Flash Risk Assessment can be completed the location will
follow the most current Approach Boundary Table issued by NFPA 70E-2015
Table 130.4 (D)(a) (see Appendix B).
3.9.5
Line
Supervisor
Ensure all personnel follow Appendix C for PPE requirements when working within the
limited approach boundary.
3.9.6
Line
Supervisor
Ensure all personnel follow the Approach Boundary Table issued by NFPA 70E-2015
Table 130.4 (D)(a) for voltages less than 480 when the Arc Flash Risk Assessment is
completed for 480 volts or greater.
3.9.7
Line
Supervisor
Update the risk assessment following renovations, expansions, and replacements for
systems 480 voltages and greater.
Note: All electrical assessments will be updated every five years.
3.10
Personnel Precautions and Procedures
Step
Person In
Charge (PIC)
3.10.1
Qualified
Person
3.10.2
Qualified
Person
3.10.3
Qualified
Person
Action
Ensure the following are done before performing any electrical work:
 Visually inspect the grounding
 Visually inspect the equipment for damage
 Check for burnt odors
 Listen for unusual noise
Use UL/ULC rated contact voltage tester to verify zero state (e.g. Fluke, etc.).
Remove all conductive articles of jewelry and clothing such as watch bands,
bracelets, necklaces, rings, key chains, metalized aprons, cloth with conductive
thread, metal eyewear, or metal headgear if they could contact exposed energized
parts.
Troubleshooting
3.10.4
Qualified
Person
Determine whether the electrical work is live electrical work or troubleshooting.
(e.g., troubleshooting includes, but not limited to; the use of standard testing
instruments on energized circuits to determine voltage, amperage, wattage, etc.):
Note: Troubleshooting of an energized system does NOT require an Energized
Electrical Work Permit, but PPE is required to be worn, as described, before the
employee enters the Flash Protection Boundary and a completed Electrical Safety
Analysis (ESA) prior to the task being performed.
3.10.5
Qualified
Person
Develop an ESA prior to beginning troubleshooting activities in the field (see
Attachment E).
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3.10.6
3.10.7
3.10.8
Note: Qualified personnel performing the tasks will discuss the electrical
activities any special precautions that need to be taken, equipment affected, and
the personal protective equipment required in the area.
Barricade
around the work area during troubleshooting activities to ensure
Qualified
nonqualified
persons remain outside the limited approach boundary.
Person
Note: Tools and other portable tripping objects will need to be placed outside the
limited approach boundary.
Never
perform live electrical work when troubleshooting. Follow lockout/tagout
Qualified
protocols or if live electrical work is necessary, notify the Supervisor to complete the
Person
required Live Electrical Permit (see Attachment B).
Prior to performing any electrical troubleshooting tasks, conduct a pre-task tailgate
Qualified
with employees and/or contractors before the job to ensure all safety practices
Person
identified are communicated.
Live Electrical Work
3.10.9
Qualified
Person
Determine if the activity to be performed is live electrical work (e.g., removing a live
bus, installing a circuit breaker into a live panel, performing a live electrical tie-in,
overhead utility line tie-in, etc.), or troubleshooting. A permit is required for live
electrical work.
3.10.10
Line
Supervisor
Ensure qualified persons only work on energized electrical systems when one or more
of the following criteria are met:


3.10.11
Qualified
Person
3.10.12
Qualified
Person
3.10.13
Qualified
Person
De-energizing introduces additional or increased hazards, or,
De-energizing is infeasible due to equipment design or operational limitations
Note: If work must take place on energized circuits, Devon locations must
consider first the use of engineering controls as the preferred electrical hazard
risk control technique. Where they are not feasible or are not in place, complete
a Live Electrical Work Permit (see Attachment B).
Conduct a documented Electrical Safety Analysis (ESA) prior to beginning the activity
to identify hazards and develop specific procedures to eliminate/control the hazards.
Note: Qualified personnel performing the tasks will discuss the electrical
activities any special precautions that need to be taken, equipment affected, and
the personal protective equipment required in the area.
Obtain a Live Electrical Work Permit.
 Ensure the permit is completed by at least two qualified personnel prior to
starting the activity.
 The permit shall be completed prior to initiating a live electrical work task and
will be reviewed during the Pre-task tailgate process.
 The permit and the completed ESA must be posted in a visible location where the
live electrical work is taking place for the duration of the activity task.
 Provisions shall be made to ensure the continuity of electrical hazard protection
during shift or personnel changes.
 The permit shall be signed by the qualified individuals performing the work, the
contractor’s qualified supervisor, and a Devon Superintendent within the BU.
Barricade around the work area during live electrical work activities to ensure
nonqualified persons remain outside the limited approach boundary.
Note: Tools and other potential tripping objects will need to be placed outside the
limited approach boundary.
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3.10.14
Qualified
Person
Conduct a pre-task tailgate with employees and/or contractors before the job to
ensure all safety practices are identified.
3.10.15
Qualified
Person
Ensure work on energized circuits with 277 volts or greater is never conducted alone.
At a minimum, the project must be carried out by two qualified personnel who are
current in CPR and First-aid.
3.10.16
Line
Supervisor
Notify emergency medical assistance and local utilities immediately if an individual
has made contact with energized wiring.
Note: Only perform first-aid and CPR when the person is no longer in contact
with energized wiring.
Enclosed Work Environment
3.10.17
Qualified
Person
Use protective shields, barriers, or insulating materials as necessary to avoid
accidental contact with energized parts.
3.10.18
Qualified
Person
Follow the Hot Work Protocol when opening an energized electrical equipment
enclosure in a classified location.
3.10.19
Qualified
Person
Keep doors, panels and covers of electrical equipment enclosures closed
according to manufacturer’s specifications except while



Taking readings
Making repairs
Troubleshooting
3.10.20
Qualified
Person
Brace door open in a safe manner while working on the enclosure.
Note: Doors must be capable of being opened at least 90 degrees.
3.10.21
Qualified
Person
Use energy isolation when working on electrical equipment to prevent
unexpected start-up or energization of the equipment. Procedures must include
the following steps:



Identify all possible electrical supply sources feeding the equipment and
isolation points.
Isolate all electrical supplies by interrupting the load current.
Apply locks and tags to each isolation point and verify de-energization.
Note: A lock and tag shall be placed on each energy isolation point to deenergize circuits and equipment where work is to be performed. Parts of
electric equipment that have been de-energized but have not been locked or
tagged out shall be treated as energized parts. (Refer to the Energy Isolation
Protocol (COR-3S3-PR) for additional guidance on lockout/tagout.)
PERSONAL PROTECTIVE EQUIPMENT (PPE)
3.10.22
Qualified
Person
Wear the appropriate PPE based on the information provided on the Approach
Boundary Table (Table 130.4 (D)(a)) (see Appendix B) and/or label posted on the
electrical equipment prior to opening the cabinet to perform troubleshooting or live
electrical work.
3.10.23
Qualified
Person
Inspect and test electrical personal protective equipment as required to ensure that
it is maintained in a safe and reliable condition. (see Appendix D).
3.10.24
Qualified
Person
Remove personal protective equipment that is damaged or equipment failed to pass
test requirements until repaired or permanently discarded/destroyed.
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3.10.25
Qualified
Person
Wear the appropriate Hazard Rated Category (HRC) PPE that meets the 70E
requirements for the job.
Note: See garment label for ASTM F1506 standard.
3.10.26
Qualified
Person
Wear Class E Hard Hat, full or partial brim that meets ANSI Z89.1.
3.10.27
Qualified
Person
Wear nonconductive protective equipment for the face, neck, and chin whenever
there is a danger of injury from exposure to electric arcs, or flashes. Eye and face
protection equipment will conform to ANSI Z87.1.
3.10.28
Qualified
Person
Wear safety shoes having a rating of dielectric footwear as per ASTM F2413 (formerly
ANSI Z41) and/or CAN/CSA Z195 and Z195.1.
3.10.29
Qualified
Person
Wear hand Insulating rubber gloves that are properly rated and tested prior to coming
into contact with energized parts.
Note: Where rubber gloves are used for shock protection, outer leather
protectors and inner cloth liners will be provided and worn under the rubber
gloves.
3.10.30
Qualified
Person
Use electrical blankets and/or insulated mats whenever applicable, while working on
electrical equipment.
3.10.31
Qualified
Person
Use hot sticks in accordance with the manufacturer’s recommendations for
working with energized electrical systems.
3.10.32
Qualified
Person
Use insulated tools and equipment when working in proximity to energized or
potentially energized conductors and/or exposed electrical components. Insulated
tools must display the international double triangle or double square symbol (see
diagrams below).
3.11
Contractor Participation
3.11.1
Line
Supervisor
Designate a qualified individual as a representative when arrangements have been
made to have a contractor perform live electrical work. The person will assign the
following required coordination and informational functions:


Provide the contractor with a copy of this protocol and ensure the contractor
understands that the contractor’s electrical program must meet or exceed the
requirements of this procedure.
Inform the contractor of the known hazards of the electrical equipment and any
precautions that have been implemented in or near the systems that will be accessed
by the contractor’s employees.
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3.11.2
Line
Supervisor
Review and approve the contractor’s ESA developed for the task(s) to be performed.
The contractor’s ESA must meet or exceed the provided example (see Attachment E)
in this protocol.
Note: The contractor will need to be prepared to share the completed ESA with a
Devon representative. The contractor’s supervisor and participating employees
have signed the completed ESA.
3.11.3
Line
Supervisor
Ensure an approved Live Electrical Work Permit and ESA is developed and approved
by contract supervision for work that cannot be de-energized and must be done live.
A Devon representative must sign the Live Electrical Permit prior to the activity being
performed.
Note: The Devon signature is acknowledgement that there has been verification
that there is a plan in place and not to the accuracy of the plan.
3.12
Equipment Labeling
All labels and markings will be of sufficient durability to withstand the environment in which are
placed. Metal-enclosed switchgear, unit substations, transformers, connection boxes, and other
similar associated equipment will be marked with appropriate caution signs.
Step
Person In
Charge (PIC)
Action
3.12.1
Line
Supervisor
Ensure electrical equipment is equipped with the manufacturer’s name, trademark or
other descriptive marking by which the organization responsible for the product may
be identified.
3.12.2
Line
Supervisor
Ensure electrical disconnects (e.g., fuse box, breaker panel, switch enclosure, etc.)
are labeled to identify what equipment/location they serve.
3.12.3
Line
Supervisor
Ensure equipment that starts automatically is properly labeled with a sign that reads,
“Danger: Equipment Starts Automatically.”
3.12.4
Line
Supervisor
Ensure personnel are adequately warned about electrical hazards using safety signs
and symbols. Accident prevention tags shall be used where necessary.
3.12.5
Line
Supervisor
Mark entrances to rooms and other guarded locations containing exposed energized
parts with warning signs forbidding unqualified person to enter (Example: Danger, Do
Not Enter, Authorized Personnel Only, Qualified Persons Only).
3.12.6
Line
Supervisor
Ensure electrical equipment that may be serviced while energized is field marked
with a label containing all the following information for equipment with 50 volts or
greater (see Appendix F):
 Highest Hazard/Risk Category (HRC) for the equipment
- Nominal system voltage
- Arc flash boundary
 At least one of the following:
- Available incident energy and the corresponding working distance
- Minimum arc rating of clothing
- Required level of PPE
Note: Electrical equipment includes switchboards, panel boards, industrial control
panels, meter socket enclosures, and motor control centers, etc.
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3.12.7
Line
Supervisor
Ensure high voltage hazards in service areas with 600 volts or greater, are adequately
warned with labels stating “Danger High Voltage. For example, 600 volt equipment
would be labeled with “Danger High Voltage – 600 Volts.”
3.13
Electrical Area Classification Requirements
Step
Person In
Charge (PIC)
Action
3.13.1
Line
Supervisor
Ensure hazardous areas are classified by their hazard class, division, and group using
existing facility drawings, engineering, and API RP 500 & NEC, Article 500. All
electrical equipment installed in an area that handles flammable gasses or liquids
shall be evaluated for hazardous classification requirements.
3.13.2
Line
Supervisor
3.13.3
Line
Supervisor
Ensure electrical equipment, lighting and wiring methods in hazardous classified area
meet NEC Article 500 for such installations.
Note: Equipment rated for Division 1 areas may be installed in Division 2 areas of
the same class and group.
Ensure classified area seals are installed to block the migration of flammable vapors
through electrical conduit. Paint seal caps red to signify that pouring has been
completed.
3.14
Housekeeping and Cleaning
Step
Person In
Charge (PIC)
Action
3.14.1
Employee
Do not perform housekeeping duties within the limited approach boundaries of live
electrical parts that present an electrical contact hazard.
3.14.2
Employee
De-energize control panels and other electrical parts before external cleaning.
3.14.3
Qualified
Person
Follow manufacturer’s guidelines when performing internal cleaning of electrical
equipment.
3.14.4
Employee
Never store trash and other combustibles in Motor Control Centers (MCC) or electrical
substations.
3.14.5
Employee
Maintain 36 inch clearance from of all electrical cabinets/breakers and never store
material on top of cabinets.
3.15
Electrical Review
Step
Person In
Charge (PIC)
Action
3.15.1
EHS
3.15.2
Line
Supervisor
Ensure the protocol is reviewed every three years to verify compliance with the most
current version of NFPA 70E.
Review a representative sample of field activities to verify the electrical safety
protocol is being followed (see Attachment F).
Note: Any corrective actions identified must be corrected at the time of the
observation.
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3.16
Procurement and Design
Step
Person In
Charge (PIC)
Action
3.16.1
Line
Supervisor
Line
Supervisor
Line
Supervisor
Ensure switches, controllers and circuit breakers are able to be mechanically locked
out in the off position for lockout/tagout purposes.
Ensure that electrical cabinet doors rated for 600 volts or greater AC or DC have
either lock or interlocks.
Ensure and verify equipment is in accordance with the National Electric Code
specification.
Note: Local, regional or state requirement must also be followed.
3.16.2
3.16.3
4.0
RECORDKEEPING
Step
Person In
Charge (PIC)
Action
4.1
Qualified
Person
File completed electrical field reviews.
4.2
Qualified
Person
File completed Electrical Protocol Review.
4.3
Line
Supervisor
File the records as noted below:
File Location &
Number
Record
Retention Period
Enterprise
Classification
Structure Code
Live Electrical Permits
See Field Office File
Directory
CY + 3 years
(CY = Current Year)
EH45
Field Review
See Field Office File
Directory
CY + 3 years
(CY = Current Year)
EH45
Electrical Safety
Protocol Review
See Field Office File
Directory
CY + 3 years
(CY = Current Year)
EH45
Risk Assessments (Arc
Flash Study/Hazard Risk
Assessment)
See Field Office File
Directory
CY + 5 years
(CY = Current Year)
EH45
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Electrical Safety Protocol
5.0
Training Requirement
Step
Person In
Charge (PIC)
Action
5.1
Non-qualified
Operational
Devon employees will need to be trained in the following areas:
 The dangers of live electricity
 Authorization to enter MCC Rooms, Electrical Substations to conduct inspections,
maintain proper housekeeping, perform LOTO functions, etc. The need to ensure
that all electrical equipment can be accessed at all times (36” clearance).
 Employees will receive additional training on how to reset heaters/breakers and
shut off equipment at the electrical disconnect.
 Are not to use damaged extension cords, power hand tools, and are to report all
damaged electrical equipment to their immediate Supervisor (e.g., exposed
wiring, open and/or damaged junction or breaker boxes, etc.).
 Understand how to review and audit ESA/Live Electrical Permit
Note: They will NOT be allowed to assist or pass the barricade set at the
limited approach boundary during live electrical work activities.
 Understand the difference within each Hazard Rating Classification (HRC1-4)
5.2
Qualified
Person
Training Frequency: Annual
Devon employees responsible for performing troubleshooting and/or live electrical
work will be required to complete qualified training from an outsourced contractor
which addresses the following elements:
 Discuss training objectives
 Employees will receive both classroom and practical training on live electrical
work.
 Classroom:
 The Dangers of Live Electricity – Electrical Accidents in E&P Facilities
 Review NFPA 70E & protocol. All NFPA 70E is discussed:
o Definitions, assessing hazards, hazard risk categories, lockout/tagout,
work boundaries, PPE requirements, permits & safety assessments, etc.
o Where and how to use an appropriately classified multimeter safely, how to confirm electrical apparatus is de-energized, as well
as functional metering uses such as testing phase to phase, phase to ground
voltage, resistance, continuity, etc.
o Review Electrical PPE requirements
Inspection/Testing
o How to perform a Risk Assessment in an effort to complete an Electrical ESA
and Permit
o Proper emergency support (CPR/first-aid trained separately)
 Field Exercise
 Complete ESA/permit for electrical as a group
 Use of a multi-meter
 Don PPE & arc flash protection
 Establish safe work boundaries
 Review proper stance & method for opening & closing breakers & disconnects
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

Open a cabinet and simulate the testing of live voltages
Review electrical hazards as they pertain to oilfield apparatus
Training Frequency: Annual
6.0
REFERENCES
NEC 2014 Working Clearances - 110.26
NEC 2014 Guarding of live parts - 110.27
OSHA Lockout/Tagout Regulation – 1910.147
OSHA DIRECTIVE NUMBER: CPL 02-00-147, 2/11/08
Devon Lockout/Tagout Protocol
Standard for Electrical Safety in the Workplace – 70E 2015
Standard for the Installation of Lightning Protection Systems –NFPA 780
North American Independent Laboratories (NAIL)
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Appendix A — Shock Risk Assessment
A.1 Risk Assessment
This informative guidance regarding a qualitative approach for risk assessment, including risk estimation and risk
evaluation, which can be helpful in determining the protective measures that are required to reduce the
probability of harm occurring in the circumstances under consideration.
Hazard identification and risk assessment are analytical processes consisting of a number of discrete steps
intended to ensure that hazards are properly identified and analyzed with regard to their severity and the
probability of their occurrence. Appropriate protective measures can then be implemented and evaluated in
order to determine if adequate risk reduction has been achieved. Hazard identification and risk assessment
include a comprehensive review of the hazards, the associated foreseeable tasks, and the protective measures
that are required in order to maintain a tolerable level of risk, including the following:
(1) Identifying and analyzing electrical hazards
(2) Identifying tasks to be performed
(3) Documenting hazards associated with each task
(4) Estimating the risk for each hazard/task pair
(5) Determining the appropriate protective measures needed to adequately reduce the level of risk using
the Risk Assessment Flow Chart
A.1.2 Parameters Used in Risk Estimation.
These parameters should be based on worst-case considerations for the electrical system. The risk estimation
stage is the only one at which hazards can be eliminated, thus avoiding the need for additional protective
measures, such as safeguarding or complementary protective measures.
A 1.3 Severity of the Possible Harm (Se).
Severity of injuries or damage to health can be estimated by taking into account reversible injuries, irreversible
injuries, and death. Typically, the types of hazards to be considered include, but are not limited to, shock and
electrocution, burns, and impact.
A 1.4 Probability of Occurrence of Harm.
Each of the three parameters of probability of occurrence of harm (that is, Fr, Pr, and Av) should be estimated
independently of each other. A worst-case assumption needs to be used for each parameter to ensure that the
protective measures, determined during risk evaluation, will provide adequate risk reduction. Generally, the use
of a form of hazard/task–based evaluation is strongly recommended to ensure that proper consideration is given
to the estimation of the probability of occurrence of harm.
A 1.4.1 Frequency and Duration of Exposure (Fr).
The following aspects should be considered to determine the level of exposure:
(1) Need for access to the hazard zone based on all modes of use; for example, normal operation and
maintenance
(2) Nature of access; for example, examination, repair, and trouble shooting
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It should then be possible to estimate the average interval between exposures and, therefore, the average
frequency of access. This factor does not include consideration of the failure of the short-circuit interruption
device(s) or the failure to use the appropriate personal protective equipment. Select the appropriate row for
frequency and duration of exposure (Fr) from Table Insert the appropriate number under the Fr column in Table.
A 1.4.2 Probability of Occurrence of a Hazardous Event (Pr).
The occurrence of a hazardous event influences the probability of the occurrence of harm. The probability of the
hazardous event occurring should describe the likelihood of the event materializing during the use or foreseeable
misuse, or both, of the electrical system or process. Subjectivity may have a substantial impact on the result of
the risk assessment. The use of subjective information should be minimized as far as reasonably practicable. The
probability of occurrence of the hazardous event should be estimated independently of other related
parameters(Fr an d Av) and will typically be based on the results of the completed study of the arc flash
potential. The worst-case scenario should be used for this parameter to ensure that short-circuit interruption
device(s) have, where practicable, been properly selected and installed and will provide adequate
protection.
Elements of the electrical system that are intended to ensure an intrinsically safe design shall be taken into
consideration in the determination of the probability of the hazardous event(s) These can include, but are not
limited to, the mechanical structure, electrical devices, and electronic controls integral to the system or
process, or both, at the time of the analysis. Types of components that could contribute to an inherently safe
design could include, but are not limited to, current-limiting devices or, ground-fault circuit interrupters. This
parameter can be estimated by taking into account the factors that follow.
(1) The predictability of the performance of component parts of the electrical system relevant to the
hazard in different modes of use (e.g., normal operation, maintenance, fault finding).
At this point in the risk assessment process, the protective effect of any personal protective equipment and
other protective measure should not be taken into account. This is necessary in order to estimate the amount of
risk that will be present if the personal protective equipment and other protective measures are not in place at
the time of the exposure. In general terms, it must be considered whether the electrical system being assessed
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has the propensity to act in an unexpected manner. The electrical system performance will vary from very
predictable to not predictable. Unexpected events cannot be discounted until it can be clearly demonstrated
that the electrical system will perform as expected. Informational note: Predictability is often linked to the
complexity of the electrical system and the characteristics of the energy supply.
(2) The specified or foreseeable characteristics of human behavior with regard to interaction with the
component parts of the machine relevant to the hazard, which can be characterized by one or both of
the following:
a. Stress (for example, due to time constraints, work task, perceived damage limitation)
b. Lack of awareness of information relevant to the hazard
Human behavior will be influenced by factors such as skills, training, experience, and complexity of the machine
process. These attributes are not usually directly under the influence of the electrical system designer, but a
task analysis will reveal activities where total awareness of all issues, including unexpected outcomes, cannot be
reasonably assumed. “Very high” probability of occurrence of a hazardous event should be selected to reflect
normal workplace constraints and worst case considerations. Positive reasons (for example, well defined
application and a high level of user competence) are required for any lower values to be used. Any required or
assumed skills, knowledge, and so forth, should be stated in the information for use. Select the appropriate row
for probability of occurrence of a hazardous event (Pr) from Table A1.4.2.
Table A1.4.2. Indicate the appropriate risk level under the Pr column.
A 1.4.3 Probability of Avoiding or Limiting Harm (Av).
This parameter can be estimated by taking into account aspects of the electrical system design and its intended
application that can help to avoid or limit the harm from a hazard, including the examples that follow. (1)
Sudden fast or slow speed of appearance of the hazardous event; for example, an explosion caused by high
fault values under short-circuit conditions. (2) Spatial possibility to withdraw from the hazard. (3) Nature of the
component or system; for example, the use of touch-safe components can reduce the probability of contact with
energized parts. Working in close proximity to high voltage can increase the probability of personnel being
exposed to hazards due to approach to live parts. (4) Possibility of recognition of a hazard; for example, an
electrical hazard: a copper bar does not change its appearance, whether or not it is under voltage. To recognize
the presence of the hazard, one needs an instrument to establish whether or not electrical equipment is
energized; thus, both inadvertent and advertent contact need to be considered. Select the appropriate row for
probability of avoiding or limiting harm (Av) from Table F.1.4.3.
Insert the appropriate risk level under the Av column in Table F.1.4.3
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A1.4.4 Risk Level and Probability of Harm.
Once the parameters for each hazard under consideration have been entered in Table F.2.5, the information can
be used in the first step of the risk assessment process as outlined in Figure F.1(a).
A 2 Risk Reduction.
A 2.1 Protective Measures. Once the risk prior to the application of protective measures has been estimated, all
practicable efforts must be made to reduce the risk of harm. Careful consideration of failure modes is an
important part of risk reduction. Care should be taken to ensure that both technical and behavioral failures,
which could result in ineffective risk reduction, are taken into account during the risk reduction stage of the risk
assessment. Situations where hazard elimination cannot be attained typically require a balanced approach in
order to reduce the probability of harm. For example, the effective control of access to an electrical system
requires the use of barriers, awareness placards, safe operating instructions, qualification and training, and
personnel protective equipment as required by this standard, as well as initial and refresher or periodic training
for all affected personnel in the area. Engineering controls alone are not sufficient in reducing the remaining risk
to a tolerable level. Typically, all five areas of risk reduction must be implemented in order to achieve
the desired result. Consideration of all five of the items that follow is required to establish an adequate risk
reduction strategy.
A2.1.1 Engineering Controls.
Engineering controls have the potential to have a substantial impact on risk. They should, where practicable, be
considered and analyzed. Typically, engineering controls take the form of barriers and other safeguarding
devices as described in NFPA 70, National Electrical Code, IEC 60204-1 ed 5.1 Consol. With
am 1, Safety of Machinery — Electrical Equipment of Machines — Part 1: General Requirements, 2009 or NFPA
79, Electrical Standard for Industrial Machinery, or a combination thereof.
A2.1.2 Awareness Devices.
Awareness means can be used to complement the effects of engineering controls with regard to risk reduction.
They should be chosen based on the design configuration for each specific application and their potential
effectiveness during foreseen interaction. Each design and configuration could require unique awareness devices
in order to have the desired impact on risk. Typically, awareness means take the form of signs, visual alarms,
audible alarms, and so forth.
A2.1.3 Procedures.
Procedures and instructions that are required for the individual(s) to safely interact with the electrical system
should be identified. The procedures and instructions should include descriptions of the hazards, the possible
hazardous events, hazardous situations, and the protective measures that need to be implemented. The
procedures and instructions should also be used to communicate any foreseeable misuse of the system that could
contribute to an increased level of risk. Typically, formal procedures should be provided in written form;
however, in some cases, verbal instruction can be provided. Care should be taken in the latter case to ensure
that the verbal instructions will have the desired impact on risk.
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A2.1.4 Training. Training, with regard to the proper interaction and for foreseeable inappropriate interaction
with the electrical system, must be completed. The intent of the training is to ensure that all affected personnel
are able to understand when and how hazardous situations could arise and how to best reduce the risk
associated with those situations. Typically, training for those interacting with electrical systems will include
technical information regarding hazards or hazardous situations, or both, as well as information related to
potential failure modes that could impact risk. This type of training generally will be provided by a trainer who
has an in-depth understanding of electrical system design, as well as experience in the field of adult education.
Less technical training content could be appropriate in situations where only awareness of electrical hazards is
needed in order to ensure that unqualified personnel do not interact with the electrical system.
A2.1.5 Personal Protective Equipment (PPE).
The electrical system must be analyzed in order to determine the appropriate category of personal protective
equipment (PPE). Once the appropriate PPE has been determined, personnel are required to maintain and use it
as required in order to ensure that residual risk remains at the desired level.
A3 Risk Evaluation.
A3.1 Risk Evaluation.
Once the appropriate protective measures described in F.3.1 have been applied, the impact of those measures
on the elements of risk (see Figure F.2.1) should be taken into account. Each type of protective measure could
impact one or more of the elements that contribute to risk. The effects on risk, or the impacts on the individual
elements of risk, should be considered in the final risk estimation. The cumulative effect of the final
combination of protective measures can then be used to estimate the residual risk. Paragraphs F.4.1.1 through
F.4.1.5 provide a general non exhaustive outline that can be used as a guide to the final estimation of risk.
A3.1.1 Design — Elimination or Substitution by Design.
(a) Elimination of the hazard — impacts both severity of harm and likelihood of harm Failure mode(s)
examples:
(1) Component(s) failure
(2) Application of an incorrect construction or manufacturing specification
(3) Incorrect calculation (that is, potential energy, toxicity, strength, durability)
(4) Inadequate procurement control
(5) Incorrect or insufficient maintenance, or both
(b) Substitution — may affect severity of harm, frequency of exposure to the hazard under consideration,
or the possibility of avoiding or limiting harm, depending on which method of substitution is applied, or a
combination thereof. Failure mode(s) examples:
(1) Unexpected or unanticipated interaction
(2) Excessive production pressure
(3) Inadequate procurement control
A3.1.2 Design — Use of Engineering Controls.
(a) Greatest impact on the probability of a hazardous event(s) under certain circumstances
(b) No impact on severity of harm failure mode(s) examples:
(1) Incorrect application of construction or manufacturing specification
(2) Unanticipated tasks
(3) Incentive to circumvent or reduce effectiveness
(4) Excessive production pressure
(5) Protective system failure
A3.1.3 Use of Systems that Increase Awareness of Potential Hazards.
(a) Potential impact on avoiding or limiting harm
(b) Potential impact on inadvertent exposure
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(c) Minimal or no impact on severity of harm
Failure mode(s) examples:
(1) Too many warning signs
(2) Depreciation of effect over time
(3) Lack of understanding
A3.1.4 Organization and Application of a Safe System of Work.
A3.1.4.1 Personnel training.
(a) Greatest impact on avoiding or limiting harm
(b) Minimal, if any, impact on severity of harm
(c) Possible impact on the probability of a hazardous event(s) under certain circumstances
Failure mode(s) examples:
(1) Training not understood
(2) Identified hazards not clearly communicated
(3) Depreciation of effect over time
(4) Training material not current
(5) Training not consistent with instructions
(6) Training material not inclusive of detail regarding how to perform work
A3.1.4.2 Access restrictions.
(a) Greatest impact on exposure
(b) No impact on severity of harm
Failure mode(s) examples:
(1) Work permit system does not exist
(2) Competency complacency
(3) Insufficient monitoring, control, or corrective actions, or combination thereof
A3.1.4.3 Safe work procedures.
(a) Greatest impact on avoiding or limiting harm
(b) Minimal, if any, impact on severity of harm
© Possible impact on the probability of a hazardous event(s) under certain circumstances
Failure mode(s) examples:
(1) Inconsistent with the current culture
(2) Procedures not current or accessible
(3) Does not consider all task, hazards, or hazardous situations, or combination thereof
(4) Insufficient monitoring, control, or corrective actions, or combination thereof
(5) Instructions not consistent with training content
(6) Content too general (for example, “Don’t touch the live parts, be careful.”)
A3.1.4.4 Policies and instructions.
(a) Greatest impact on exposure
(b) Possible impact on the probability of a hazardous event(s) under certain circumstances
(c) Minimal or no impact on severity of harm
Failure mode(s) examples:
(1) Policies and instructions inconsistent
(2) Instructions not clearly communicated or accessible
(3) Insufficient monitoring, control, or corrective actions, or combination thereof
(4) Allows personnel to make the decision to work live without adequate justification
A3.1.5 Personal Protective Equipment (PPE).
(a) Greatest impact on avoiding or limiting harm
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(b) Potential impact on inadvertent exposure
(c) Minimal impact on severity of harm
(d) No impact on the probability of a hazardous event(s)
Failure mode(s) examples:
(1) Reason for use not understood
(2) Creates barriers to effective completion of the work
(3) PPE specification inappropriate for the considered hazards
(4) Production pressure does not afford time to use or maintain
(5) Worker forgets to use when needed
(6) Excessive discomfort
(7) Perceived invulnerability
(8) Insufficient monitoring, control, or corrective actions, or combination thereof
A 4 Risk Reduction Verification.
A4.1 Verification. Once the assessment has been completed and protective measures have been determined, it
is imperative to ensure that the protective measures are implemented prior to initiating the electrical work.
While this procedure might not result in a reduction of the PPE required, it could improve the understanding of
the properties of the hazards associated with a task to a greater extent and thus allow for improvement in the
implementation of the protective measures that have been selected.
A4.2 Auditing. For each activity that has been assessed, it could be necessary to audit the risk reduction
strategy that is applicable. If an audit is required, the auditing process should take place prior to commencing
work on electrical systems. An example of a non-exhaustive audit is shown in Figure F.5.2. Each audit process
may need to be specific to the properties of the electrical system or the task to be performed, or both.
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Electrical Task Hazard Analysis
Task:
Equipment:
Issued by:
Date:
Document no.:
Part of:
Pre–risk assessment
Intermediate risk assessment
Follow-up risk assessment
A 1.4.1 Frequency and
Duration of Exposure (Fr).
RED Area = Safety Measures Required
Consequences
Irreversible trauma,
death
Permanent, thirddegree burn
Reversible, seconddegree burn
Reversible, first aid
Severity
(SE)
3–
4
5–
7
Grey Area = Safety Measures Recommended
Frequency
Probability
Class (CL)
(Fr)
(Pr)
Common
8–10
11–13
14–15 Daily
5
5
Avoidance
(Av)
4
Weekly
4
Likely
4
3
Monthly
3
Possible
3
Impossible
5
2
1
Yearly
Less
2
1
Rarely
Negligible
2
1
Possible
Likely
3
1
Job Step
Hazard
SE
Fr
Pr
A 1.3 Severity of the possible
Harm (Se).
A 1.4.2 Probability of
Occurrence of a Hazardous
Event (Pr).
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Av
CL
0
0
0
0
0
0
0
0
0
0
0
0
0
Controls
A 1.4.3 Probability of
Avoiding or Limiting Harm
(Av).
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APPENDIX B – APPROACH BOUNDARY TABLE
NFPA 70E – 2015
Table 130.4(D)(a) Approach Boundaries to Energized Electrical Conductors or Circuit Parts for Shock Protection for
Alternating-Current Systems (All dimensions are distance from energized electrical conductor or circuit part to employee.)
(1)
Nominal System Voltage
Range, Phase to Phasea
<50 V
50 V-150 Vd
151 V-750 V
751 V-15 kV
15.1 kV-36 kV
36.1 kV-46 kV
46.1 kV-72.5 kV
72.6 kV-121 kV
138 kV-145 kV
161 kV-169 kV
230 kV-242 kV
345 kV-362 kV
500 kV-550 kV
765 kV-800 kV
(2)
Limited Approach
_________________
Exposed Movable
Conductorc
Not specified
3.0 m (10 ft 0 in.)
3.0 m (10 ft 0 in.)
3.0 m (10 ft 0 in.)
3.0 m (10 ft 0 in.)
3.0 m (10 ft 0 in.)
3.0 m (10 ft 0 in.)
3.3 m (10 ft 8 in.)
3.4 m (11 ft 0 in.)
3.6 m (11 ft 8 in.)
4.0 m (13 ft 0 in.)
4.7 m (15 ft 4 in.)
5.8 m (19 ft 0 in.)
7.2 m (23 ft 9 in.)
(3)
Boundaryb
______________
Exposed Fixed
Circuit Part
Not specified
1.0 m (3 ft 6 in.)
1.0 m (3 ft 6 in.)
1.5 m (5 ft 0 in.)
1.8 m (6 ft 0 in.)
2.5 m (8 ft 0 in.)
2.5 m (8 ft 0 in.)
2.5 m (8 ft 0 in.)
3.0 m (10 ft 0 in.)
3.6 m (11 ft 8 in.)
4.0 m (13 ft 0 in.)
4.7 m (15 ft 4 in.)
5.8 m (19 ft 0 in.)
7.2 m (23 ft 9 in.)
(4)
Restricted Approach
Boundaryb; Includes
Inadvertent Movement Adder
Not specified
Avoid contact
0.3 m (1 ft 0 in.)
0.7 m (2 ft 2 in.)
0.8 m (2 ft 7 in.)
0.8 m (2 ft 9 in.)
1.0 m (3 ft 3 in.)
1.0 m (3 ft 4 in.)
1.2 m (3 ft 10 in.)
1.3 m (4 ft 3 in.)
1.7 m (5 ft 8 in.)
2.8 m (9 ft 2 in.)
3.6 m (11 ft 10 in.)
4.9 m (15 ft 11 in.)
Note (1): For arc flash boundary, see 130.5(A).
Note (2): All dimensions are distance from exposed energized electrical conductors or circuit part to employee.
a For single-phase system above 250V, select the range that is equal to the system’s maximum phase-to-ground voltage
multiplied by 1.732.
b See definition in Article 100 and text in 130.4(D)(2) and Informative Annex C for elaboration.
c Exposed movable conductors describes a condition in which the distance between the conductor and a person is not under
the control of the person. The term is normally applied to overhead line conductors supported by poles.
d This includes circuits where the exposure does not exceed 120V.
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Table 130.7(C)(15)(A)(B) Arc-Flash Hazard PPE Categories for Alternating Current (ac) Systems
Equipment
Arc Flash PPE Category
Arc-Flash Boundary
Panelboards or other equipment rated 240 V and below
485 mm
Parameters: Maximum of 25 kA short-circuit current available;
maximum of 0.03 sec (2 cycles) fault clearing time; working
distance 455 mm (18 in.)
Panelboards or other equipment rated >240 V and up to 600 V
1
(19 in.)
900 mm
Parameters: Maximum of 25 kA short-circuit current available;
maximum of 0.03 sec (2 cycles) fault clearing time; working distance
455 mm (18 in.)
600- V class motor control centers (MCCs)
2
(3 ft)
1.5 m
Parameters: Maximum of 65 kA short-circuit current available;
maximum of 0.03 sec (2 cycles) fault clearing time; working distance
455 mm (18 in.)
600- V class motor control centers (MCCs)
2
(5 ft)
4.3 m
Parameters: Maximum of 42 kA short-circuit current available;
maximum of 0.33 sec (20 cycles) fault clearing time; working
distance 455 mm (18 in.)
600-V class switchgear (with power circuit breakers or fused switches) and 600 V class
switchboards
Parameters: Maximum of 35 kA short-circuit current available;
maximum of up to 0.5 sec (30 cycles) fault clearing time; working
distance 455 mm (18 in.)
Other 600- V class (277 V through 600 V, nominal) equipment
4
(14 ft)
6m
4
(20 ft)
1.5 m
Parameters: Maximum of 65 kA short circuit current available;
maximum of 0.03 sec (2 cycles) fault clearing time; working distance
455 mm (18 in.)
NEMA E2 (fused contractor) motor starters, 2.3 kV through 7.2 kV
2
(5 ft)
12 m
Parameters: Maximum of 35 kA short-circuit current available;
maximum of up to 0.24 sec (15 cycles) fault clearing time; working
distance 910 mm (36 in.)
Metal-clad switchgear, 1 kV through 15 kV
4
(40 ft)
12 m
Parameters: Maximum of 35 kA short-circuit current available;
maximum of up to 0.24 sec (15 cycles) fault clearing time; working
distance 910 mm (36 in.)
Arc-resistant switchgear Type 1 or 2 [for clearing times of <0.5 sec (30
cycles) with a perspective fault current not to exceed the arcresistant rating of the equipment], and metal-enclosed interrupter
switchgear, fused or unfused of arc-resistant-type construction,
tested in accordance with IEEE C37.20.7, 1 kV through 15 kV
Parameters: Maximum of 35 kA short-circuit current available;
maximum of up to 0.24 sec (15 cycles) fault clearing time; working
distance 910 mm (36 in.)
4
(40 ft)
N/A (doors closed)
N/A (doors closed)
_________________________
____________________
4 (doors open)
12 m (40 ft)
Other equipment 1 kV through 15 kV
12 m
Parameters: Maximum of 35 kA short-circuit current available;
4
maximum of up to 0.24 sec (15 cycles) fault clearing time; working
(40 ft)
distance 910 mm (36 in.)
Note: For equipment rated 600 volts and below, and protected by upstream current-limiting fuses or current-limiting circuit breakers sized by 200 amperes or
less, the arch flash PPE category can be reduced by one number but not below arc flash PPE category 1.
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Table 130.7(C)(15)(B) Arc-Flash Hazard PPE Categories for Direct Current (dc) Systems
Equipment
Arc Flash PPE Category
Arc-Flash Boundary
1
900 mm
Storage batteries, dc switchboards, and other dc supply sources
100 V > Voltage < 250 V
Parameters:
Voltage: 250 V
Maximum arc duration and working distance: 2 sec @ 455 mm (18 in.)
Short-circuit current < 4 kA
(3 ft)
4 kA < short-circuit current < 7 kA
2
1.2 m
(4 ft)
7 kA < short-circuit current < 15 kA
3
1.8 m
(6 ft)
Storage batteries, dc switchboards, and other dc supply sources
250 V < Voltage < 600 V
Parameters:
Voltage: 600 V
Maximum arc duration and working distance: 2 sec @ 455 mm (18 in.)
Short-circuit current 1.5 kA
1
900 mm
(3 ft)
1.5 kA < short-circuit current < 3 kA
2
1.2 m
(4 ft)
3 kA < short-circuit current < 7 kA
3
1.8 m
(6 ft.)
7 kA < short-circuit current < 10 kA
4
2.5 m
(8 ft)
Note: Apparel that can be expected to be exposed to electrolyte must meet both of the following conditions:
(1)Be evaluated for electrolyte protection in accordance with ASTM F1296. Standard Guide for Evaluating Chemical Protective Clothing
(2) Be arc-rated in accordance
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Appendix C –HRC Rated Clothing and Other PPE
Table 130.7(C)(16)
Protective Clothing and Personal Protective Equipment (PPE)
Hazard
Personal Protective Equipment
Risk
Category
1
Arc-Rated Clothing,
Minimum Arc Rating of 4 cal./cm2 (See Note 3.)
Arc-rated long-sleeve shirt and pants or
arc-rated coverall
Arc-rated face shield (see Note 2) or arc flash suit hood
Arc-rated jacket, parka, rainwear, or hard hat liner (AN)
Protective Equipment
Hard hat
Safety glasses or safety goggles (SR)
Hearing protection (ear canal inserts)
Heavy duty leather gloves (See Note 1.)
Leather work boots
2
Arc-Rated Clothing,
Minimum Arc Rating of 8 cal/cm2 (See Note 3.)
Arc-rated long-sleeve shirt and pants or
arc-rated coverall
Arc-rated flash suit hood or arc-rated face shield (See
Note 2) and arc-rated balaclava
Arc-rated jacket, parka, rainwear, or hard hat liner (AN)
Protective Equipment Hard hat
Safety glasses or safety goggles (SR)
Hearing protection (ear canal inserts)
Heavy duty leather gloves (See Note 1.)
Leather work shoes
Arc-Rated Clothing Selected so That the System
Arc Rating Meets the Required Minimum Arc
Rating of 25 cal/cm2 (See Note 3.)
Arc-rated long-sleeve shirt (AR)
Arc-rated pants (AR)
Arc-rated coverall (AR)
Arc-rated arc flash suit jacket (AR)
Arc-rated arc flash suit pants (AR)
Arc-rated arc flash suit hood
Arc-rated gloves (See Note 1.)
Arc-rated jacket, parka, rainwear, or hard hat liner (AN)
Protective Equipment
Hard hat
Safety glasses or safety goggles (SR)
Hearing protection (ear canal inserts)
Leather work shoes
3
Hazard
Risk
Category
Personal Protective Equipment
4
Arc-Rated Clothing Selected so That the System
Arc Rating Meets the Required Minimum Arc
Rating of 40 cal/cm2 (See Note 3.)
Arc-rated long-sleeve shirt (AR)
Arc-rated pants (AR)
Arc-rated coverall (AR)
Arc-rated arc flash suit jacket (AR)
Arc-rated arc flash suit pants (AR)
Arc-rated arc flash suit hood
Arc-rated gloves (See Note 1.)
Arc-rated jacket, parka, rainwear, or hard hat liner
(AN)
Protective Equipment
Hard hat
Safety glasses or safety goggles (SR)
Hearing protection (ear canal inserts)
Leather work shoes
Informational Note No. 1:
Simplified approach to ensure adequate PPE for electrical workers
within facilities with large and diverse electrical systems.
Informational Note No. 2:
The PPE requirements of this section are intended to protect a person
from arc flash and shock hazards. While some situations could result
in burns to the skin, even with the protection described in Table
130.7(C)(16), burn injury should be reduced and survivable. Due to
the explosive effect of some arc events, physical trauma injuries
could occur. The PPE requirements of this section do not address
protection against physical trauma other than exposure to the thermal
effects of an arc flash.
Informational Note No. 3:
The arc rating for a particular clothing system can be obtained from
the arc-rated clothing manufacturer.
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APPENDIX D – PPE, Inspection and Frequency
Personal Protective
Equipment (PPE)
Conducted by Whom
Frequency
Pre-Use Inspection:
Visual inspection to check for:
Nicks, tears, rips, punctures follow Appendix D.
Employee
 To test gloves for pinholes and other damage, fill the
glove with air. The use of a portable glove inflator is
recommended. Or in lieu of a glove inflator, roll up the
cuff of the glove to make a seal, and squeeze the
glove.
 Then hold the inflated glove close to the face and
ear to feel and listen for air escaping from holes (if
any)(see Appendix E)
Proper Storage:
Electrical Gloves
Gloves in service will be properly stored. Insulating
rubber gloves and leather protectors may be properly
stored. Gloves will not be folded, creased, or rolled while
in storage. Gloves will be protected from heat, sunlight,
and from contact with sharp articles or materials likely to
damage gloves or cause deterioration of the rubber.
Gloves shall not be stored in close proximity to any
electrical sources. Clean gloves according to
manufacturer’s specifications. Do not use solvents, oils,
or grease on rubber gloves.
Electrical Tests:
Every six months from service.
Blankets/Sleeves
Gloves may only be stored on the shelf for no more than
12 months.
Pre-Use Inspection:
Visual inspection to check for:
Nicks, tears, rips, punctures
Outside Service
Employee
Electrical Tests:
Every 12 months from service.
Outside Service
Pre-Use Inspection:
Arc-rated apparel shall be inspected before each use.
Work clothing or arc flash suits that are contaminated, or
damaged to the extent that their protective qualities are
impaired, shall not be used.
Employee
Protective items that become contaminated with grease,
oil, or flammable liquids or combustible materials shall
not be used.
AR
Do not remove warning or rating tags.
N/A
Electrical Tests:
Not Applicable
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Personal
Protective
Equipment
(PPE)
Flash Protection
Overalls (e.g., 12
cal., 40 cal., 50
cal., etc.)
Frequency
Protective items that become contaminated with grease,
oil, or flammable liquids or combustible materials shall
not be used.
Do not remove warning or rating tags.
Electrical Tests:
Not Applicable
Pre-Use Inspection:
Conduct visual inspection for cracks, nicks, punctures,
contaminants (e.g.; paint, grease, etc.) and wipe the
stick down, removing any difficult to see contaminants.
Hot Stick
Electrical Test:
Every two years of service.
If any defect or contamination that could adversely affect
the insulating qualities or mechanical integrity of the
live-line tool is present after wiping, the tool shall be
removed from service and examined and tested by an
outside provider.
Pre-Use Inspection:
Hand Tools
Conducted by Whom
Pre-Use Inspection:
Arc-rated apparel shall be inspected
before each use. Work clothing or arc flash suits that are
contaminated, or damaged to the extent that their
protective qualities are impaired, shall not be used.
N/A
Qualified Person
Outside Service
Qualified Person
Conduct pre-use inspection to ensure the equipment is
kept clean and dry. UL approved hand tools use two
different color layers of insulation making damage to the
insulation easy to recognize.
Electrical Tests:
Not Applicable
N/A
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APPENDIX E – Electrical Glove Pre –Use Inspection
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APPENDIX F - Electrical Safety Labeling
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Page 36
Revision/Approval
Date: 01/09/15
Electrical Safety Protocol
Attachment A – Approval, Review and Modification History
Revision
Number
00
Approved/Revised/Reviewed
By
Richard Luedecke
Approval/Revision/
Review Date
Description (Initial Approval, Revision
or Review along with further details
of revision if needed)
01/08/15
PROPRIETARY INFORMATION Devon Energy Corporation
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Document uncontrolled unless viewed via the Devon Intranet
Division:
Corporate
Business
Unit/Area:
N/A
Protocol No.:
COR-3S10-PR
Page 37
Revision/Approval
Date: 01/09/15
Electrical Safety Protocol
Devon Energy
Attachment B -
PROPRIETARY INFORMATION Devon Energy Corporation
Printed copies may not be most recent version of document
Document uncontrolled unless viewed via the Devon Intranet
Division:
Corporate
Business
Unit/Area:
N/A
Protocol No.:
COR-3S10-PR
Page 38
Electrical Safety Protocol
Attachment C
Arc Flash Request Form
PROPRIETARY INFORMATION Devon Energy Corporation
Printed copies may not be most recent version of document
Document uncontrolled unless viewed via the Devon Intranet
Revision/Approval
Date: 01/09/15
Division:
Corporate
Business
Unit/Area:
N/A
Protocol No.:
COR-3S10-PR
Page 39
Electrical Safety Protocol
PROPRIETARY INFORMATION Devon Energy Corporation
Printed copies may not be most recent version of document
Document uncontrolled unless viewed via the Devon Intranet
Revision/Approval
Date: 01/09/15
Division:
Corporate
Business
Unit/Area:
N/A
Protocol No.:
COR-3S10-PR
Page 40
Revision/Approval
Date: 01/09/15
Electrical Safety Protocol
Arc Flash Request form Tutorial Page
This page will help you to identify the areas of your site where the information needed to complete the Arc Flash Request
can be found.
Step 1: Please check the box next to the reason the arc flash study is being requested. This could be because of a Process
Hazard Analysis (PHA), an upcoming five year review, the site is a new facility, a recommendation was made by an authority,
there are operational hazards present, or the site has or will soon be modified.
Step 2: Fill out the name and location of the facility, as well as the project name, number, the business unit and requestor’s
name. Also, the estimated start date of the project and its target completion date.
Note: If there are multiple sites that are equivalent, this form need only be filled out once. The number of identical sites
and the alternate site names should be recorded on the following page. The requestor assumes all responsibility for the
accuracy of the information presented in the Arc Flash Request Form. Please ask for assistance if there is a situation in
which you are unable to find or do not know where to find the correct information.
Step 3: Check the power sources from utility. Please indicate the Voltage, number of phase (single, 3), fuse rating and the
frequency (Hz).
To find this information:

Contact the utility/check the recent bill.

Look on the fuse rating located towards the top of the utility pole on the transformer bank
(See figure).

For Fuse rating please check the label fuses in the breaker panel(if qualified to do so).
Step 4: Please indicate any high voltage motors (480V) the quantity (QTY) of each type, length
of the conductor from the motor to the panel and their horsepower’s (HP).
This information can be found on the labels on the motor.
PROPRIETARY INFORMATION Devon Energy Corporation
Printed copies may not be most recent version of document
Document uncontrolled unless viewed via the Devon Intranet
c
Division:
Corporate
Business
Unit/Area:
N/A
Protocol No.:
COR-3S10-PR
Page 41
Revision/Approval
Date: 01/09/15
Electrical Safety Protocol
Step 5: for an Motor Control Center(MCC), please indicate the Voltage of the Motor (V),
the Phase of the motor- single, 3-(phase), and the frequency it operates at (Hz) also
please indicate if it is (WYE) or (delta) or if any other type please check [Other] and
write in on the adjacent line.
Please also indicate the fault current (amps) of the MCC. Next for the power coming into the MCC please indicate the current
rating (A) for the bus duct and the size and type of the incoming cable. Also, indicate how many cables
are incoming and what phase power will be sent. If there is Arc Resistant Construction
please indicate if it is type 2B or write in what type it is. Please indicate the type of
enclosure of this MCC – either indoor or outdoor and any supporting NEMA information.
This information can be found by:

Manufacturer label, if there is more information than
you think you need then the

best option is to check the serial number
and the manufacturer name and look it up for specification.
Frequency (Hz)
Voltage Power
(HP/KW)
Step 6: For any on-site transformers (not utility), please indicate their operating voltage, phase and frequency. As well as if
they are WYE, DELTA or other. For the incoming power to the transformer please indicate the current rating (A) for the Bus
Duct and the size and type of the incoming cable. Also, indicate how many cables are incoming and what phase power will be
sent.
This information can be found by:

Manufacturer label, if there is more information than you think you need then the best option is to check the serial
number and the manufacturer name and look it up for specification.
Step 7: For any Switchgears: Please indicate the voltage, phase and frequency, as well as the rating for the main breaker
current (A) and the short time interrupt rating (AIC).
For the incoming power to the switchgear please indicate the current rating (A) for the bus duct and the size and type of the
incoming cable. Also, indicate how many cables are incoming and what phase power will be sent.
If there is arc resistant construction please indicate if it is type 2B or write in what type it is.
Please indicate the type of enclosure of this switchgear – either indoor or outdoor and any supporting NEMA information.
This information can be found by:

Manufacturer label, if there is more information than you think you need then the best option is to check the serial no.
and the manufacturer name and look it up for specification.
Step 8: For all compressors please indicate if they are gas or electric or neither.
If they are electric: Please indicate their Voltage, phase and frequency.
Also for the incoming power to the compressor please indicate the current rating (A) for the bus duct and the size and type of
the incoming cable. Also, indicate how many cables are incoming and what phase power will be sent.
This information can be found by:

Manufacturer label, if there is more information than you think you need then the best option is to check the serial no.
and the manufacturer name and look it up for specification.
Step 9: Please indicate the name, voltage and load (amperes) capacity for any other equipment on the site.
Any additional comments can be indicated at the bottom of the form.
PROPRIETARY INFORMATION Devon Energy Corporation
Printed copies may not be most recent version of document
Document uncontrolled unless viewed via the Devon Intranet
Attachment D —
WARNING!
LIVE ELECTRICAL WORK IN PROGRESS
LIVE ELECTRICAL WORK PERMIT
MUST BE POSTED AT OR NEAR THE AREA OF WORK
Date Start:
Start Time:
End Time:
Issued to:
Contact Number:
Location
Workstation Number (if applicable)
Description of Work to be Done:
Description of Circuit/Equipment:
Justification for why equipment cannot be de-energized:
Adds Additional Hazards
Required for Testing/Troubleshooting
Unfeasible to Shut Down Process Equipment
Detailed Description of Justification:
Transfer below the HRC, Voltage, Glove Class and Boundary Distances from existing Arc Flash label; otherwise,
estimate HRC, Glove Class, Boundaries and PPE using the NFPA tables listed below.
Hazard Risk
Glove Class
Category (HRC)
Hazard
VAC
VDC
(00 – 4)
From AF Label
Approach Boundaries
(inches or feet / cm or
meters)
Limited
Approach
Restricted
Approach
Circle HRC
0
1
2
3
4
Injury not likely
Injury less likely
Potential for severe injury or death
Potential for severe injury or death is
greater
Potential for severe injury or death is
greatest
Consult Arc Flash Label on Equipment or NFPA Tables 130.7(C)(9) and 130.2(C) to determine highest incident energy, HRC and Approach
Distances. Use ASTM Glove Chart to determine Glove Class for the maximum voltage of exposed energized circuits. Use PPE Matrix for all other
PPE determinations.
POWER SOURCE (Identify the source(s) supplying power to the circuit while energized)
Power Supply
Hi Pot
Other Source(s) – Explain:
DESCRIPTION OF THE SAFE WORK PRACTICES TO BE EMPLOYED:
Know Where to Turn power off
Notify affected workers
Safety Watch
Adequate lighting provided
"C" Fire Extinguisher nearby
Radio/Cell Communication
Communication
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
HAZARD ANALYSIS (Continued)
Job Briefing - Items to be done BEFORE starting work:
1. Review the Electrical Safety Analysis (ESA) Procedure with all,
(either a Standard ESA Procedure, or a Custom Procedure)
2. All participants in agreement with the steps of the procedure.
3. Attach ESA Plan to this Permit.
Check Completed By:
SHOCK HAZARD (Identify the energized components associated with the task – Choose all that apply)
Exposed to power connections (Alligator, Banana Plugs)
Exposed Equipment (Circuit Cards, Components, Bus bars)
Open Panel
Lugs (exposed bolts, nuts, connectors, etc.)
Capacitor(s)
Other – Explain:
KNOWN/ANTICIPATED EXPOSED LIVE COMPONENTS (List)
1.
Volts
2.
Volts
AC
DC
AC
DC
WORK RISK (Identify the at risk actions/events involved with the work to be conducted – Choose all that apply)
Tool Use on Circuits
Meter Reading on Live Components
Movement/Change of Power Leads
Short Circuiting
Polarity Reversal
Other – Explain:
WORK CONTROLS (Verify that proper controls are in place):
VISUAL WARNING
Hazard Sign & Permit Posted (Electrical hazard sign must be posted during all live electrical work)
(Initials)
LIMITED/RESTRICTED BOUNDRY CONTROLS (identify method(s) used to establish boundaries)
Barricades
Barriers
“Danger” Tape
Lookout
Other – Explain:
PERSONAL PROTECTIVE EQUIPMENT (PPE)
Glove Class (00 – 4):
Gloves Inspected:
Glove Tested date:
(Initials)
Electrical Hazard Rated Shoes:
(Non-conductive mats required if Electrical
Hazard Rated Shoes not in use)
Glove Expiration date:
(Initials)
Glove Registration No.:
Necessary personal protective equipment to safely perform the assign task (listed on the Arc-Flash Label if identified or using
Hazard/Risk Category Classification by task, (See the NFPA 70E Compliance Guide on the back):
AR Rated Clothing
Balaclava Hood
Ear Plugs
Flash Suit
Voltage Rated Tools
Face Shield
Glove Inserts
Voltage Rate Shoes
Category III Meter
E Class Hard Hat
Leather Gloves
Insulated Blankets
SafetyGlasses/Goggles
2 Layer Switching Hood
Voltage Rated Gloves
Non-conductive Bench-top Mat
Non-conductive Floor Mat
Insulated/rated tools and
instruments
All mats tools and instruments inspected for damage:
(Initials)
All instruments are rated for use with maximum voltage identified:
(Initials)
Pre-work meter test completed:
Post-work meter test completed:
(Initials)
(if greater than 600V)
(Initials)
PERSONAL
Remove or cover jewelry
Use of non-conductive safety glasses/face shield
CPR/First-Aid Certified
Partner CPR/First-Aid Certified (277 volts or greater)
Use of non-conductive
clothing & underwear
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
PERSONNEL ASSIGNED
Qualified Person:
Date:
(Print)
(Signature)
(Print)
(Signature)
(Print)
(Signature)
(Print)
(Signature)
Qualified Person:
Date:
Other Personnel:
APPROVALS
Supervisor:
Date:
Devon
Superintendent
Date
Disclaimer: The Devon person signing the permit is acknowledging that the electrical safety process has been followed and is
not signing to the accuracy of the ESA and Permit completion
LIVE ELECTRICAL PERMIT CLOSURE
When work is completed, return this Permit with the Standard/Custom ESA used to the Electrical Leader, or the Operating Department.
In addition, any changes or enhancements requirement to be made to the Standard ESA Procedure need to be communicated to the
Electrical Leader.
Supervisor:
Time:
(Print)
(Signature)
RETURN A COPY OF THIS PERMIT TO EHS UPON COMPLETION
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
Date:
Page: 1 of 1
Revision:
Location:
Effective Date:
Attachment E — Electrical Safety Analysis (ESA) Form
Electrical Safety Analysis (ESA)
TITLE:
WRITTEN BY:
PURPOSE:
POTENTIAL HAZARDS:
PPE REQUIRED:
* Remove All Jewelry *
PROCEDURE:
1
2
3
Basic Job Steps
HRC
Evaluate equipment and determine Hazard
Rating Category (HRC) by the Table
130.7(C)(15)(a) or the label posted on the
cabinet. OR Follow Arc Flash study labeling
located on the electrical cabinet or equipment
Communicate with affected personnel in the
area of the work about to be performed.
0
Inadequate PPE could result in arc burn
Hazards
Determine proper PPE, limited approach boundaries, etc.
Safe Work Practices
0
Barricade using RED Barricade Tape at the limited approach
boundary around the work area or assign a spotter to the job
to ensure unqualified personnel stay clear of the work area.
Include this ESA with contractors Pre-Task
Tailgate Meeting prior to performing electrical
activity.
0
Potential interference and exposure to live
energized parts resulting in live electrical
shock, burns, etc. while the guarded line
side remains energized
Poor communication of the activities
performed can lead to SIFs and/or injuries.
Conduct Pre-Task Tailgate meeting with all those involved in
the activity using this ESA.
4
5
It is the responsibility of the employee to immediately halt work and notify a Supervisor if unsure of ability, scope of work, or pending safety issue, at
any time in the workday.
NOTE:
Preparer – Print Name
Date
Preparer Signature – Sign Name
Date
Participant – Print Name
Date
Participant – Sign Name
Date
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
Page: 1 of 1
Revision:
Location:
Electrical Safety Analysis (ESA)
Effective Date: 08/28/14
TITLE: Verify Electrical Motor Rotation
PURPOSE:
WRITTEN BY: XXXX-XXXX
Troubleshooting Activity – testing circuitry on 480 volt cabinet located at the south east corner of the pad are being tested to ensure proper
rotation before and after equipment comes on line.
POTENTIAL HAZARDS: Exposure to electrical voltages (480v.),
PPE REQUIRED: Face Shield, balaclava hood, safety glasses, hearing protection, electrical gloves, FRC II, dielectric boots, “E” Class Hard Hat, leather gloves,
glove liner.
* Remove All Jewelry *
PROCEDURE:
Basic Job Steps
HRC
Evaluate equipment and determine Hazard
Rating Category (HRC) by the Table
130.7(C)(15)(a) or the label posted on the
cabinet. OR Follow Arc Flash study labeling
located on the electrical cabinet or equipment
Communicate with affected personnel in the
area of the work about to be performed.
0
Inadequate PPE could result in arc burn
Determine proper PPE, limited approach boundaries, etc.
0
3
Include this ESA with contractor’s pre-task
tailgate meeting prior to performing electrical
activity.
0
Potential interference and exposure to live
energized parts resulting in live electrical
shock, burns, etc. while the guarded line
side remains energized
Poor communication of the activities
performed can lead to SIFs and/or injuries.
Barricade using RED Barricade Tape at the limited
approach boundary around the work area or assign a
spotter to the job to ensure unqualified personnel stay
clear of the work area.
Conduct pre-task tailgate meeting with all those involved
in the activity using this ESA.
4
Ensure the cabinet is at zero state
2
Potential injury resulting from arc flash,
electric shock, etc.
5
Check electrical rotation prior to energizing
the motor
2
Potential injury resulting from arc flash,
electric shock, etc.
6
Correct Rotation (if applicable)
0
Minimal Risk
Open the cabinet with the disconnect in the closed
position standing on the right of the equipment and
opening it with the left hand. Use a contact voltage meter
(e.g., fluke) to test equipment and verify zero state.
Connect the rotation meter leads on the bottom of the
disconnect. Energize standing to the side with the door
open. Check meter results then shut power to the
disconnect off, removing meter and closing door.
If rotation is incorrect shut power off and lock and tag
disconnect. Confirm zero state, change leads and reenergize.
1
2
Hazards
Safe Work Practices
7 Remove Electrical PPE
0
Minimal Risk (zero state)
NOTE: It is the responsibility of the employee to immediately halt work and notify a Supervisor if unsure of ability, scope of work, or pending safety issue, at any time in the
workday.
Preparer – Print Name
Date
Preparer Signature – Sign Name
Date
Participant – Print Name
Date
Participant – Sign Name
Date
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
Page: 1 of 1
Revision:
Location:
Attachment F — Electrical Field Review
Date:
Electrical Field Review
TITLE:
REVIEWED BY:
PURPOSE:
KEY ELEMENTS OBSERVED:
Troubleshooting Activities
Affected individuals in the area informed of activities
Area Barricaded or Spotter Assigned
ESA Completed and Signed
Jewelry Removed
Live Electrical Work Activities
Affected individuals in the area informed of activities
Area Barricaded or Spotter Assigned
ESA Completed and Signed
Jewelry Removed
Live Permit Completed and Signed
Voltages 277 and greater have additional CPR/Firstaid Qualified individual present
PPE REQUIREMENT
FRC
Electrical Gloves
Leather Gloves
Gloves Inner liners
Safety Glasses
Hearing Protection
Di-Electric Boots
Electric Hard Hat
Category III Meter
Balaclava Hood
Flash Suit
Face shield
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
Electrical Field Review (continued)
WHAT HAZARDS WERE IDENTIFIED BY THE QUALIFIED PERSON?
WERE ANY BEST PRACTICES IDENTIFIED?
OPPORTUNITIES FOR IMPROVEMENT?
ADDITIONAL TRAINING REQUIRED?
___ NO
Qualified Person – Print Name
____YES
Date
Reviewer – Print Name
Reviewer – Signature
Qualified Person -Signature
Form # COR-3S3-PR
Form Retention: EH45 – CY+3
Date