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Electrical Safety. Responsibilities Hazard Control Electrical Equipment Personal Protective Equipment. Responsibilities. Management Training Safety Corrective action Meets code and regulations Employees Report deficiencies immediately

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electrical safety

Electrical Safety


Hazard Control

Electrical Equipment

Personal Protective Equipment

  • Management
    • Training
    • Safety
    • Corrective action
    • Meets code and regulations
  • Employees
    • Report deficiencies immediately
    • Only perform work on equipment authorized / trained for
    • Properly inspect all electrical equipment prior to use
hazard control
Hazard Control
  • Engineering Controls
    • Electrical panels, breakers, disconnects, etc… are enclosed
    • When required - water tight enclosures are in use
    • Electrical distribution areas are properly grounded
    • Clear approach of 36”side and front is maintained
    • Conduit is fully supported
    • All non-rigid cords have strain relief where necessary
  • Administrative Controls
    • Only trained & authorized employees conduct electrical repairs
    • Barriers & warning signs - prevent unauthorized entry
    • Lockout / tagout
    • Electrical control devices properly labeled
electrical equipment
Electrical Equipment
  • Examination - free from recognized hazards
    • suitability of equipment for an identified purpose
    • mechanical strength and durability
    • electrical insulation
    • heating effects under conditions of use
    • arcing effects
    • classification by type, size, voltage,current capacity & use
    • safeguarding of employees using or coming into contact with equipment
  • Identification of Disconnecting Means & Circuits
    • shall be legibly marked to indicate its purpose
    • at the point where the circuit originates
    • each service, feeder, and branch circuit
personal protective equipment
Personal Protective Equipment
  • Shall be used when contact with exposed electrical sources are likely
  • Shall be designed for the job and environment
  • Shall be inspected or tested before use
  • Non-conductive head PPE required where overhead or energized parts exist.
  • Eye / face PPE required when electrical arcs, flashes or flying objects exist.
  • Shall maintain insulating capabilities at all times.
  • Electrically rated safety shoes / boots / gloves / head gear
  • Tools properly insulated
  • Electrically rated matting for all distribution panels / utility rooms
ppe continued
PPE Continued
  • Fuse handling equipment insulated for the circuit voltage
  • Ropes and other hand lines
  • Portable ladders shall have non-conductive side rails
  • Working on elevated platform - REQUIRES - safety watch on the ground
  • Personnel working in elevated platforms must wear safety harness and lanyard
  • Lockout tagout
    • Locks attached to prevent operating the disconnecting source
    • Tag contain a statement prohibiting unauthorized operation
  • Warning signs and barricades and or a safety attendant
standard operating procedures electrical pre work procedures
Standard Operating Procedures Electrical Pre-work Procedures
  • Treat all electrical circuits as “Live”
    • Obtain permission from supervisor
    • Lockout / tagout at electrical power sources
    • Verify de-energized conditions exist - operate controls
    • Voltmeter verification at live electrical source - must be rated for voltage
    • Check exposed circuits phase to ground
    • No voltage in exposed circuits - it’s ok to work
    • If voltage is detected - Stop - determine source & eliminate voltage
    • Conduct work
    • Close up exposed circuits, boxes, control panels and equipment
    • Remove lock and tag
    • Obtain supervisor permission to energize circuits
standard operating procedures working on exposed energized circuits
Standard Operating ProceduresWorking on Exposed Energized Circuits
  • Obtain permission from manager
  • Lock out and tag out all circuits possible
  • Treat all circuits as energized
  • Remove all conductive clothing and jewelry
  • Use all required PPE - including shields & barriers
  • Inspect all overhead lines before starting
  • Provide adequate lighting
  • Don’t reach were you cant see
  • Approach distance see chart next slide.
approach distance for qualified employees alternating current

Voltage range (phase to phase)Minimum approach distance

300V and less……………………………. Avoid Contact

Over 300V, not over 750V……………. 1 ft. 0 in. ( 30.5 cm)

Over 750V, not over 2kV……………… 1 ft. 6 in. ( 46 cm)

Over 2kV, not over 15kV……………. 2 ft. 0 in. ( 61 cm)

Over 15kV, not over 37kV……………. 3 ft. 0 in. ( 91 cm)

Over 37kV, not over 87.5 kV…………. 3 ft. 6 in. (107 cm)

Over 87.5kV, not over 121kV………… 4 ft. 0 in. (122 cm)

Over 121kv, not over 140kV…………… 4 ft. 6 in. (137 cm)

  • Employees entering a confined space with exposed energized parts, must use protective barriers, shields, or insulated materials rated at or above the present voltage.
  • Secure all doors to prevent contact with employee and causing employee contact with energized parts
re energizing electrical circuits after work is completed
Re-energizing Electrical Circuits After Work is Completed
  • Qualified person shall
    • conduct test and visual inspection
    • verify all tools / equipment have been removed
  • Warn all employees that the system is going to be re-energized
  • Remove all locks and tags (by the individual that installed them)
  • Conduct a visual determine that all employees are clear and energize the system
powered equipment safety rules
Powered Equipment Safety Rules
  • PEE = Cord or plug-type electrical devices including extension cords
    • damage free - no stapling, nailing or door jams
    • visually inspected - if damage is present repair immediately
    • do not over load circuits
    • ground type plugs - to - ground type receptacles
    • never alter plugs
    • if moisture is present - equipment must be double insulated or rated for the job
    • it’s not a good idea to be standing in water while operating PPE
    • locking-type connectors shall be properly secured when connected to a
electrical circuits safety procedures
Electrical Circuits Safety Procedures
  • Electrical power and light circuits are devices designed to connect or reverse circuits under a power load condition
    • cable connectors, (not load-breakers) fuses, terminal plugs or cable splice connectors may not be used, unless an emergency, to connect, disconnect or reverse in place of proper electrical circuits
    • once a protective circuit is disconnected or opened, it may not be connected or closed until it is determined safe to energize
    • over current protectors or circuits or connected circuits are never modified
    • only qualified employees may perform electrical circuit or equipment tests
    • all test equipment must be inspected before use - if damaged remove from service
    • test equipment must meet or exceed the voltage being tested & environment
    • electrical equipment is may not be used around flammable material unless the proper measures have been taken to prevent the hazardous condition from developing