22 Oct Electrical Safety – How about your Workplace?

Electrical Safety – How About Your Workplace?

Electrical hazards exist anywhere employees work with or around power lines, electrical equipment, wiring, portable tools, temporary power, or energized components. Electrical incidents can cause shock, severe burns, arc-flash injuries, falls, fires, and electrocution.

Past NIOSH investigations of occupational electrocutions demonstrate an important lesson: electrical fatalities can occur among both highly trained electrical workers and employees who have little electrical training. Training alone is not enough. Safe procedures, proper equipment, hazard recognition, and consistent compliance are essential.

How Electrical Incidents Occur

NIOSH investigations have historically identified several recurring circumstances associated with workplace electrocutions, including:

• Direct contact with energized overhead power lines.
• Direct contact with energized electrical equipment or components.
• Cranes, aerial lifts, and other boomed equipment contacting energized power lines.
• Improperly installed, defective, or damaged electrical equipment.
• Ladders, tools, materials, or other conductive objects contacting energized power lines.

These incidents reinforce the need to identify electrical hazards before work begins and establish appropriate controls.

Who Is at Risk?

Electrical workers are not the only employees exposed to electrical hazards. Construction workers, equipment operators, laborers, maintenance employees, drivers, and others may encounter electrical hazards during routine work.

New employees and workers unfamiliar with a particular jobsite, task, or piece of equipment may be especially vulnerable because they may not recognize electrical hazards or understand established protective procedures.

Before assigning electrical-related work, supervisors should ensure employees understand:

• The electrical hazards associated with their tasks.
• Which work they are authorized and qualified to perform.
• Required approach and clearance distances.
• Applicable lockout/tagout requirements.
• Required PPE and protective equipment.
• Emergency procedures.
• When to stop work and contact a qualified person.

Electrical Safety Checklist

Use the following questions to evaluate electrical safety in your workplace:

1. PPE and Protective Equipment
   Are employees provided with and required to use appropriate electrical PPE, insulating equipment, and tools for the hazards involved?
2. Lockout/Tagout
   Are effective energy-control procedures established and followed before employees service electrical circuits or equipment?
3. Hazard Identification
   Are employees informed of electrical hazards and instructed in the protective measures necessary to avoid contact?
4. De-Energization
   Are exposed energized parts de-energized whenever required or feasible, and is absence of voltage verified before work begins?
5. Qualified Employees
   Is electrical work restricted to employees qualified and authorized for the specific work being performed?
6. Portable Electrical Tools
   Are portable electrical tools properly grounded or approved as double-insulated?
7. Electrical Covers and Guards
   Do electrical boxes, panels, fittings, and enclosures have appropriate covers, guards, and closures securely in place?
8. Cords and Plugs
   Are extension cords, power cords, plugs, and receptacles inspected and damaged equipment removed from service?
9. GFCI Protection
   Is required Ground-Fault Circuit Interrupter (GFCI) protection provided for construction-site temporary power and other applicable locations?
10. Assured Equipment Grounding
    When an Assured Equipment Grounding Conductor Program is used as permitted, are required inspections, testing, and documentation completed?
11. Overhead Power Lines
    Are power lines identified before work begins, treated as energized unless properly confirmed otherwise, and required clearance distances maintained?
12. Cranes and Mobile Equipment
    Are cranes, aerial lifts, concrete pumps, dump trucks, ladders, and other equipment controlled to prevent encroachment on energized power lines?
13. Wet or Damp Locations
    Are electrical tools, cords, connections, and equipment properly selected and protected when used in wet or damp conditions?
14. Hazardous Locations
    Is electrical equipment installed in locations containing flammable gases, vapors, combustible dusts, or other hazardous materials approved for the applicable classified location?
15. Electrical Panels and Workspaces
    Are electrical panels clearly identified, readily accessible, and provided with required working clearance without materials being stored in front of them?
16. Inspection and Maintenance
    Are electrical installations inspected and maintained by qualified personnel in accordance with applicable OSHA requirements and the National Electrical Code (NEC/NFPA 70)?

Don’t Become Complacent

Experienced electrical workers can be injured when they become comfortable with hazards they encounter every day. Employees with less electrical experience may be injured because they do not recognize the hazard in the first place.

Both situations require the same basic approach:

Identify the hazard → De-energize whenever required → Control hazardous energy → Verify the condition → Use required protection → Perform the work safely.

Never bypass a protective device, defeat an interlock, remove a grounding prong, use damaged electrical equipment, or assume that a conductor is de-energized.

Questions for the Crew

Consider your workplace:

• Where are employees most likely to encounter electrical hazards?
• Are overhead and underground electrical lines identified before work begins?
• Are damaged tools, cords, or plugs immediately removed from service?
• Do employees understand when GFCI protection is required?
• Are electrical panels kept accessible and required clearances maintained?
• Do employees know which electrical tasks they are not qualified or authorized to perform?
• Are lockout/tagout procedures consistently followed?
• Would everyone know what to do if electrical contact occurred?

Remember

Electrical safety depends on more than knowing electricity is dangerous. Employees must recognize the hazard, understand their limitations, follow established procedures, and use the required protective equipment every time.

If an electrical condition appears unsafe or you are unsure whether equipment is energized, stop work and contact your supervisor or a qualified electrical worker.