Electrical Safety Program - Purdue University

1 Electrical Safety Program Adopted January 2014. Revised April 23, 2020. The official version of this document will only be maintained online. The official version of this document will only be maintained online. Electrical Safety Program Table of Contents Table of Contents Chapter 1: Introduction .. 1. Purpose .. 1. Scope .. 1. Definitions .. 1. Responsibilities .. 7. Basic Electrical Safety Principles .. 9. Chapter 2: Training Requirements .. 11. Initial Training .. 11. Electrical Work Normal Operation .. 11.

2 Qualified Electrical Worker Maintenance, Inspection, Troubleshooting, 12. Retraining .. 13. Documenting Training and Experience .. 13. Chapter 3: Electrical Protective Equipment .. 15. General Requirements .. 15. Personal Protective Equipment (PPE) .. 15. Insulating Materials and Tools .. 16. Access Limiting Equipment .. 17. Chapter 4: Identifying Electrical Hazards .. 19. Hazard Identification and Risk Assessment .. 19. Hazardous Effects of Electricity on the Human Body .. 19. Power Electronic Equipment and Electricity.

3 21. Hazards Associated with Power Electronic Equipment .. 21. Chapter 5: Minimizing Electrical 23. Arc Flash Hazard Analysis Implementation .. 23. West Lafayette Campus .. 23. Other Purdue University Properties and Facilities .. 24. Electrical Equipment Labeling .. 24. Chapter 6: Working On or Near Energized Electrical Equipment .. 27. Energized Electrical Work Permits .. 28. Use of Energized Work Permit .. 29. Exemptions to Energized Work Permit .. 29. Approach Distances to Exposed Energized 29. Shock Protection Boundaries.

4 29. Arc Flash Protection Boundary .. 30. Chapter 7: Working on De-Energized Electrical Equipment .. 33. Lockout/Tagout Program .. 33. Electrically Safe Condition .. 33. Other Precautions .. 34. Chapter 8: Flexible Cords and Portable Electrical Equipment .. 35. General .. 35. Extension 36. Page i of ii The official version of this document will only be maintained online. Electrical Safety Program Table of Contents Portable Cord-and-Plug Devices .. 38. Lamps .. 38. Wet or Damp Locations .. 38. Chapter 9: Temporary Wiring.

5 39. Grounding and Electrical 39. Temporary Flexible cords and Cables .. 39. Chapter 10: Working Space Around Electric Equipment (600 volts, nominal, or less) .. 41. Chapter 11: Access and Entrance to Working Space .. 43. Illumination .. 43. Headroom .. 43. Dedicated Equipment Space .. 43. Chapter 12: Vehicular and Mechanical Equipment .. 45. Elevated Equipment .. 45. Equipment Contact .. 45. Equipment 46. Chapter 13: Miscellaneous .. 47. Research and Development Laboratories .. 47. Contractor Employees .. 47.

6 Appendices .. 49. Appendix A: Regulatory References .. 50. Appendix B: Arc Flash and Shock Hazard Labels .. 51. Appendix C: Hazard Assessment and Energized Electrical Work Permit 52. Appendix C-1: Hazard Assessment for Electrical Work Form .. 56. Appendix C-2: Energized Electrical Work Permit Form .. 57. Appendix D: Hazard Risk Assessment Instructions .. 58. Appendix D-1: Hazard Risk Assessment Form .. 59. Appendix E: Electrical Cord Repair Guidelines for Physical Facilities .. 60. Appendix F: Example Electrical Safety Training 61.

7 Page ii of ii The official version of this document will only be maintained online. Electrical Safety Program Chapter 1: Introduction Chapter 1: Introduction Purpose The Electrical Safety Program (ESP) was created to comply with Electrical systems regulatory requirements to ensure that energized Electrical work at Purdue University facilities is performed safely by qualified Electrical workers who are provided with appropriate safe work procedures, protective equipment, and other controls. It is intended to protect employees against electricity-related hazards.

8 These hazards include Electrical shock and burns; arc flash burns; arc-blast impacts; falls; and other potential Electrical Safety hazards. Working on equipment in a de-energized state is required unless de-energizing introduces an increased hazard or is infeasible ( , voltage testing to troubleshoot). Scope This Program applies to all Purdue University facilities and work performed by its employees regardless of job site location. The Program has been established to ensure the Safety of employees who may work on or near Electrical equipment 600 volts or less.

9 These employees must comply with 29 CFR 1910 Subpart S of the Occupational Safety and Health Administration (OSHA) and National Fire Protection Association (NFPA) 70E 2018 edition. Employees working on voltages higher than 600 volts should comply with the OSHA 29 CFR 1910 Subpart R, specifically 29 CFR (Electric Power Generation, Transmission, and Distribution), and the Institute of Electrical and Electronics Engineers (IEEE) 2007 National Electric Safety Code. All campuses, their agencies, and employees must understand and comply with Safety standards related to Electrical work and follow the uniform practices outlined in this document when engaged in Electrical work.

10 Definitions Arc Flash Hazard. A source of possible injury or damage to health associated with the release of energy caused be an electric arc. (NFPA 70E Art. 100). Arc Flash Rating. The value attributed to materials that describes their performance to exposure to an Electrical arc discharge. The arc rating is expressed in Calories per square centimeter (cal/cm2). (NFPA 70E Art. 100). Authorized Lockout/Tagout Employee. A person who locks or implements a tagout system procedure on machines or equipment to perform the servicing or maintenance on that machine or equipment.