Electrical Safety & Reliability

Arc flashes occur only in the presence of live voltage. Thus, a fundamental approach to hazard reduction is to power down systems when they are not in use. It is essential to assume that a system is live until it is verified as de-energized. However, in situations where work on de-energized equipment is not feasible, alternative safety measures must be implemented.

Conduct a comprehensive arc flash risk assessment for all electrical systems. While a thorough assessment is required initially, it should be reviewed at least every five years and following any changes to system components or updates. Professional risk assessments identify potential hazards within electrical systems, enabling proper labeling and mitigation of risks.

Workers engaging with electrical systems must wear suitable PPE. Insulated rubber gloves provide protection against electrical arcs, heat, and flames. Additionally, head and face gear are crucial for shielding against high heat and light intensities, as well as potential impact damage from arc flash explosions.

Arc flashes can cause injuries at distances of up to six meters. Operators should maintain a safe distance from areas of severe hazard, utilizing remote tools or robots when possible. When within the calculated arc flash boundary, wearing appropriate PPE is imperative.

All individuals working with electrical systems require proper training to comprehend hazards and adhere to safe practices. This training is especially critical when interaction with live systems is unavoidable. Operators must understand how to conduct a risk assessment before commencing work, identifying hazardous areas within the system and implementing appropriate mitigation practices.