True or False: An enabling condition must be present in every LOPA calculation.

In the context of Layer of Protection Analysis (LOPA), an enabling condition is not a mandatory element for every LOPA calculation. An enabling condition refers to a situation or condition that allows a hazard to manifest; however, its necessity may vary based on the specifics of the analysis being conducted.

LOPA focuses on the effectiveness of various layers of protection against potential hazards. In some situations, a scenario may be adequately assessed without identifying an enabling condition, especially if other protective measures or existing controls sufficiently mitigate the risk.

Thus, stating that an enabling condition must be present in every LOPA calculation is false. The analysis can still be valid and effective without it, depending on the risk scenario and the layers of protection in place.