![]() ![]() Arc flash labeling became an NFPA 70E requirement in 2002, and the requirements continue to be updated. ![]() To ensure compliance with OSHA and NFPA standards, such a plan must include arc flash labeling for equipment, personal protective equipment (PPE) requirements, written energized electrical work permits where required, and safety training for employees who work on or near energized electrical equipment.Īrc flash labeling. Once arc flash risks have been identified and evaluated using either the table method or engineering analysis, data center managers can use the results to create a site-specific arc flash protection plan for at-risk workers. While the engineering analysis may be more costly and time consuming to implement, it does generate site-specific results that can ultimately lead to better protection for workers. In these cases, engineering analysis must be performed. In many instances, the table method will not be allowable because the system does not meet the criteria, or because the data center manager does not have access to the data and information needed to use the tables correctly. The system meets the listed criteria for short circuit current magnitude and the fault clearing speed of circuit protection devices.The specific task to be performed appears in the supplied tables.In fact, the standard specifically limits the use of the tables to cases where both of the following are true: Per a major revision to the 2012 version of NFPA 70E, such risk assessments must be conducted, and the arc flash boundary distance determined, for all locations where the voltage is greater than 50 volts and there is a possibility of performing energized work such as maintenance, diagnostics, and testing.īeyond increasing the scope of arc flash risk assessments, the new versions of the standard also indicate the need to determine the arc flash boundary via engineering analysis, as opposed to using the tables supplied in the standard for such purposes. Determines if protective measures are required.Estimates the likelihood of occurrence of injury or damage to health.Estimates the potential severity of injury or damage to health.The latest version of NFPA 70E clarifies the meaning of risk assessment, defining it as an overall process that: More specifically, NFPA 70E Standard for Electrical Safety in the Workplace© requires facility owners to determine arc flash-specific risks by completing an arc flash risk assessment prior to allowing a worker to perform tasks on or near energized equipment. OSHA makes employers responsible for identifying the different hazards and risks employees face on the job, including arc flash risks. The first step to keeping workers safe is determining when and where they are in danger. UNCOVERING ARC FLASH HAZARDS IN DATA CENTER INFRASTRUCTURE ![]()
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