![]() ![]() Completing an arc flash study, along with applying proper labeling to the devices, clearly communicates what the hazards are. ![]() ![]() OSHA’S Electrical Safe Work Practices (CFR 1910.333) says safety-related work practices are needed to prevent electric shock when work is performed near or on equipment/circuits that are or may be energized.If a task is not in the tables-or the working distance is closer than those used in the tables or the clearing time of the arcing current-then the arc flash study should be used instead. When tables are used, however, the currents and clearing times included in the equipment category/ rating headings must be checked to confirm that use of the tables is permitted. NFPA 70E 130.5(C)(1) allows for two methods of selecting PPE: The Incident Energy Method (arc flash study) or the Arc Flash Categories PPE Method (use the tables).In other words, if you halve the distance to the arc flash hazard, the available incident energy increases by a factor of four. In the case of the arc flash, the boundary is based on the inverse square of the distance to the hazard. NFPA 70E 130.7.E.2 communicates the need for creating approach boundaries/barricades in work areas that contain energized conductors or circuit parts.The assessment must be updated if a major modification or renovation takes place, and it must be reviewed periodically, at intervals not to exceed 5 years. NFPA 70E, ARTICLE 130.5 says an arc flash assessment must be completed to determine if an arc flash hazard exists, taking into consideration the design of the overcurrent protective device, its opening time, and its condition of maintenance.The procedures should be appropriate for the workplace conditions and training. NFPA 70E 120.2 says each employer must identify, document, and implement lockout/tagout procedures that safeguard employees from electrical hazards.NFPA 70E, ARTICLE 110.2.D.3 says employees should be retrained in safety-related work practices in intervals of three years or less.NFPA 70E, ARTICLE 110.1.A requires that the employer implement and document an electrical safety program-as part of the employer’s overall occupational health and safety management system- that directs employees on the proper procedures.The employees are responsible for applying the work procedures in accordance with their training and their demonstrated ability. The employer is responsible for providing safety-related work procedures, training employees in the practices, supervising the employees, auditing, and documenting. NFPA 70E, ARTICLE 105 outlines the responsibilities of the employer and the employee(s) regarding electrical safety.The summaries below can give you a quick regulatory snapshot into the requirements and the solutions our partners can provide. The following is a summary OSHA & NFPA 70E codes and standards. NFPA 70E is the consensus standard that OSHA’s uses to develop their regulatory standards. ![]()
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