Which risk remains after system safety efforts have been fully employed?

Which risk remains after system safety efforts have been fully employed?

• A. Residual Risk
• B. Identified Risk
• C. Unidentified Risk
• D. Hazard

Answer: (A)

Residual risk is the risk that remains after system safety efforts have been applied. In system safety, hazards are identified and risks are assessed, then controls are put in place to lower either the likelihood of an event or the severity of its consequences. Even with all feasible safety measures in place, some risk will remain due to uncertainties, imperfect controls, wear and tear, or human factors. That leftover risk is the residual risk, which you manage to keep within acceptable limits and continue to monitor. A hazard is the source of potential harm, not the remaining risk after mitigation. Identified risk is the risk you have recognized, and unidentified risk is risk you haven’t yet found.

Residual risk is the risk that remains after system safety efforts have been applied. In system safety, hazards are identified and risks are assessed, then controls are put in place to lower either the likelihood of an event or the severity of its consequences. Even with all feasible safety measures in place, some risk will remain due to uncertainties, imperfect controls, wear and tear, or human factors. That leftover risk is the residual risk, which you manage to keep within acceptable limits and continue to monitor. A hazard is the source of potential harm, not the remaining risk after mitigation. Identified risk is the risk you have recognized, and unidentified risk is risk you haven’t yet found.