Shrapnel, pressure, and noise

The noise hazard associated with an arc-flash event requires the use of personal hearing protection devices (PHPD) when workers are exposed to an arc-flash hazard. Arc-rated hoods can provide some protection for the noise hazard and can be used in conjunction with PHPDs to provide hearing protection. Although it is not possible to quantify the shrapnel hazard associated with an arc-flash event the ballistic protection offered by the arc-flash PPE to standardised threats can be determined.