Identify employees exposed to electric-arc hazards. Probability that an electric arc will occur. For flammable material in the work area, whether there is a reasonable likelihood that an electric arc or an open flame can ignite the material.The proximity of employees to open flames, and.Identify employees exposed to hazards from flames. Energized electric equipment that could fail (for example, electric equipment with damaged insulation or with evidence of arcing or overheating).Įxposure to flames.Sliding parts that could fault during operation (for example, rack-mounted circuit breakers), and.Switching devices that produce electric arcs in normal operation,.

Energized circuit parts not guarded or insulated,.Consider possible sources of electric arcs, including: The employer must conduct an assessment for each employee who performs work on or near exposed, energized parts of electric circuits. This provision ensures that the employer evaluates employee exposure to flames and electric arcs so that employees who face such exposures receive the required protection. Paragraph (l)(8)(i) of § 1910.269 requires the employer to assess the workplace to identify employees exposed to hazards from flames or from electric arcs. Assessing the Workplace for Flame and Electric-Arc Hazards

This appendix contains information to help employers estimate available heat energy as required by § 1910.269(l)(8)(ii), select protective clothing and other protective equipment with an arc rating suitable for the available heat energy as required by § 1910.269(l)(8)(v), and ensure that employees do not wear flammable clothing that could lead to burn injury as addressed by §§ 1910.269(l)(8)(iii) and (l)(8)(iv).

This paragraph requires employers to: (1) Assess the workplace for flame and electric-arc hazards (paragraph (l)(8)(i)) (2) estimate the available heat energy from electric arcs to which employees would be exposed (paragraph (l)(8)(ii)) (3) ensure that employees wear clothing that will not melt, or ignite and continue to burn, when exposed to flames or the estimated heat energy (paragraph (l)(8)(iii)) and (4) ensure that employees wear flame-resistant clothing and protective clothing and other protective equipment that has an arc rating greater than or equal to the available heat energy under certain conditions (paragraphs (l)(8)(iv) and (l)(8)(v)). Paragraph (l)(8) of § 1910.269 addresses protecting employees from flames and electric arcs. Appendix E to § 1910.269 - Protection From Flames and Electric Arcs

Arc flash boundary fold