Electrical Safety For Managers Updated For 2018 70E Daryn Lewellyn daryn@electricaltrainingpro.com ElectricalTrainingPro.com 877.393.9901 1 Fatalities From Exposure To Electricity 1992-334 Bureau of Labor Statistics 1
Fatalities From Exposure To Electricity 1992-334 2016-154 Bureau of Labor Statistics Electrical Safety Three Legged Stool Installation -NFPA 70 National Electrical Code(NEC) -OSHA 1910.301-308 Maintenance -NFPA 70B Recommended Practices For Electrical Equipment Maintenance -Manufacturers Requirements NFPA 70E Chapter 2 Electrical Safety Program -NFPA 70E Standard For Electrical Safety In The Workplace -OSHA 1910.331-335 4 2
OSHA & 70E Want You To De-Energize 5 Working On Deliberately Coming In Contact With Live Circuit Parts Diagnostic Testing Troubleshooting Visual Inspection Repair Alter The Circuit Tightening Connections Removing/Replacing Components 6 3
Hierarchy Of Risk Control Most Effective Risk Control Method Elimination Substitution Engineering Controls Example De-energize, Lockout tagout. PLC viewing ports or external laptop ports. Mitigate incident energy. Least Effective Awareness Administrative Controls PPE Signs, barricades, briefings. Training & field audits. Arc rated clothing, insulated tools, rubber gloves, etc. 7 Electrical Safety Program Job Safety Planning & Briefing Completed and documented by a qualified person. Description of job, electrical hazards, results of shock and arc risk assessments. Work procedures, precautions & energy source control. Job Briefing Cover job safety plan. Information on Energized Electrical Work Permit. (If one is required.) Change in scope. 8 4
Electrical Safety Program Incident Investigation Close Calls - Near Misses Injuries Fatalities 9 Emergency Response Training Second Person, Safety Watch, or a Crafts Person First Aid CPR Training AED If One Available Training shall occur at a frequency that satisfies the requirements of the certifying body. Verify & document annually that training is current Contact release training annually. 10 5
2018 70E Article 350 Safety-Related Work Requirements: Research and Development Laboratories Major Changes Electrical Safety Authority(ESA) Documentation Shutdown Procedures Specific Hazards Tools, Training, & Maintenance Custom Built Equipment Energy Thresholds Electrically Safe Work Condition 11 Unused Openings 12 6
Exposed Live Conductors Missing Knockouts Missing Receptacle Cover Plates Damaged Enclosures Receptacles And Switches Exposed While Painting 13 Can Be A Very Dangerous Device Ground Fault Circuit Interrupters (GFCI) Outdoors Maintenance & Construction Hubbell 14 7
15 Work Involving Electrical Hazards Energized Electrical Work Permit Within the restricted approach boundary Or if you interact with the equipment, even if live parts are not exposed, but there is an increased likelihood of an arc flash 16 8
Work Involving Electrical Hazards Exemptions To Energized Electrical Work Permit Diagnostics, voltage measurement, etc. If the restricted approach boundary is not crossed: Thermography, ultrasound, or visual inspections, Accessing an area with energized electrical equipment if no electrical work is performed General housekeeping and miscellaneous non-electrical tasks 17 Electrical Safety Training Shall Be Familiar With: Special Precautionary Techniques Policies & Procedures PPE Insulating & Shielding Materials Test Equipment OSHA Definition: Qualified Person One who has received training in and has demonstrated skills and knowledge in the construction and operation of electric equipment and installations and the hazards involved. You Can Be Qualified In Respect To Some Equipment & Tasks But Not Others 18 Photo Courtesy Of Bulwark 9
Electrical Safety Training Trained At A Minimum On: Distinguishing Live Parts Determine Nominal Voltage Approach Distances Perform Job Safety Planning Identify Electrical Hazards Assess The Risk Select Risk Controls Test Equipment Selection Absence Of Voltage Test Document 19 Photo Courtesy Of Bulwark Retraining Triggers Tasks that are performed less often than once per year Employee noncompliance New technology or new equipment Changes in procedures Safety related work practices not normally used Duties change Every three years 20 Photo Courtesy Of Bulwark 10
Retraining Triggers Lockout/Tagout Retraining When Procedures Are Revised Every 3 Years Non-Compliance Demonstrate Proficiency Document 21 Host & Contractor Documented Meeting Host Responsibility Contractor Responsibility Known Hazards That Might Not Be Recognizable Information Needed To Make Risk Assessments Report Any Observed Violations Instruct Employees On The Hazards Communicated Ensure 70E & Hosts Policies Are Followed Communicate To Host: Unique Hazards They May Create Hazards They Find Corrective Actions & Prevention Concerning Any Violations 22 11
Arc Flash Boundary Arc Rated PPE Required 1.2 cal/cm2 (5 J/cm2) 2nd Degree Burn in 1 Second Restricted Approach Boundary EEWP Trigger Insulated Gloves & Shock PPE Limited Approach Boundary ESWC Trigger 23 Determining Arc Rating Only one method can be used on the same piece of equipment & label. Incident Energy Analysis Method PPE Category Method You are not allowed to use the results of an incident energy analysis to specify a PPE category. 24 Photo Courtesy Of Oberon 12
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Arc Flash Hazard Incident Energy Analysis Field Work/Data Collection Engineering Implementation A Living Document 27 Electrical Safety For Managers Updated For 2018 70E Daryn Lewellyn daryn@electricaltrainingpro.com ElectricalTrainingPro.com 877.393.9901 28 14