This article concludes a two-part discussion of protection strategies against arc flash and shock hazards. Here you will read about two topics: (1) arc flash and shock hazard labeling for industrial, commercial and generation facility electrical exposures, and (2) methods used to determine the level of PPE required.
The previous article (see https://incident-prevention.com/ip-articles/arc-flash-considerations-for-utility-and-construction-activities) mentioned that utilities follow OSHA 29 CFR 1910.269 and construction companies follow either 1926 Subpart K or 1926 Subpart V, depending on the job site. It discussed arc flash and shock hazards as a basis for selecting appropriate PPE to protect against each hazard. It also reviewed the consideration and provision of daily workwear and flash suits as well as voltage-rated gloves for low- and high-voltage work. Part II will explain the methods used to determine the level of PPE required through an arc flash incident energy analysis or engineering study. Equipment-specific labeling is the most widely used method to communicate the level of protection to workers. Arc flash and shock labeling will be presented using examples and serve as a backdrop to the introduction of key terminology used in electrical safety.