OPS.8:5.2 - A small protection calculation

A service has one qualified resource, consuming one unit of ready service load per open hour. Its coordinator has a supported planning scenario in which replenishment can be interrupted for two open hours, and no other resource can serve that class. A two-unit ready buffer covers that interruption if service demand and eligibility remain as stated.

Keeping only one unit leaves one open hour exposed in that scenario. Keeping four units adds no protection needed for the specified two-hour interruption, although another supported disturbance might justify it. If the replenishment gap can instead be four hours, the two-unit conclusion reopens. The result is a scenario-qualified policy choice; a service-probability claim would need a different basis.