NFPA 70E: “Standard for Electrical Safety in the Workplace”
Changes 2015 Edition
Presented By: Jerry E. Rivera MEng., CECSP
Disclaimer The ASSE and Jerry Rivera disclaims liability for any personal injury, property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, use of, or reliance on this document. The ASSE and Jerry Rivera also makes no guarantee or warranty as to the accuracy or completeness of any information published herein. Any opinion expressed is the personal opinion of the authors, and does not necessarily represent the official position of the NFPA or its Technical Committees. Use of these materials for training for which compensation is received is prohibited unless authorized by Jerry Rivera in writing.
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Committee Scope The Committee shall have primary responsibility for documents for work practices that are necessary to provide a practical safe workplace relative to the hazards associated with electrical energy. This Committee shall have primary jurisdiction, but shall report to Technical Correlating Committee of the National Electrical Code.
What does NFPA 70E address? Provisions encompass safety-related work practices, safety-related maintenance requirements, and safety requirements for special equipment. The Standard includes guidance for making hazard identification and risk assessments, selecting appropriate PPE, establishing an electrically safe work condition, and employee training
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NFPA 70E Changes D Received 462 Public Input D Created 168 First Revisions Created D Correlating Committee Notes 13
Scope 90.2 Scope. (A) Covered. This standard addresses electrical safety related work practices, safety-related maintenance requirements and other administrative controls for employee workplaces that are necessary for the practical safeguarding of employees relative to the hazards associated with electrical energy during activities such as the installation, inspection, operation, maintenance, and demolition of electric conductors, electric equipment, signaling and communications conductors and equipment, and raceways.
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Scope (Continued) This standard also includes safe work practices for employees performing other work activities that can expose them to the electrical hazard as well as safe work practices for the following: (1) Installations of conductors and equipment that connect to the supply of electricity (2) Installations used by the electric utility, such as office buildings, warehouses, garages, machine shops, and recreational buildings that are not an integral part of a generation plant, substation, or control center
Scope 90.2 Scope. (B) Not Covered. This standard does not cover safety-related work practices for the following: (1) Installations in ships, watercraft other than floating building, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles (2) Installations underground in mines and selfpropelled mobile surface mining machinery and its attendant electrical trailing cable
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Scope (Continued) (3) Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock or installations used exclusively for signaling and communications purposes (4) Installations of communications equipment under the exclusive control of communications utilities located outdoors or in building spaces used exclusively for such installations
Scope (Continued) (5) Installations under the exclusive control of an electric utility where such installations: a. Consist of service drops or service laterals, and associated metering, or b. Are located in legally established easements or rights-of-way designated by or recognized by public service commissions, utility commissions, or other regulatory agencies having jurisdiction for such installations, or c. Are on property owned or leased by the electric utility for the purpose of communications, metering, generation, control, transformation, transmission, or distribution of electric energy.
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Definitions Boundary, Limited Approach. An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exist. Boundary, Prohibited Approach. An approach limit at a distance from an exposed energized electrical conductor or circuit part within which work is considered the same as making contact with the electrical conductor or circuit part.
Definitions Boundary, Restricted Approach. An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk likelihood of shock, due to electrical arcover combined with inadvertent movement, for personnel working in close proximity to the energized electrical conductor or circuit part. Energized Electrical Work Permit. Authorization to perform work on equipment that has not been placed in electrically safe working condition.
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Definitions Hazard. A source of possible injury or damage to health. Hazardous. Involving exposure to at least one hazard. Incident Energy. The amount of thermal energy impressed on a surface, a certain distance from the source, generated during an electrical arc event. One of the units used to measure incident energy is calories per centimeter squared (cal/cm2).
Definitions Incident Energy Analysis,86987.7=8/*7*;,F*
