OPS.8:4.5 - Size protection only to the supported use

Translate plausible replenishment delays into the amount consumed during those delays, using the protected activity’s calendar and rate. For example, a rig consuming one rig-hour of eligible load per open hour needs two ready rig-hours to cover a stated two-open-hour replenishment interruption. This protects that scenario under those assumptions; it is not a probability guarantee.

Compare the carrying, delay and attention costs of more protection with the consequences of shortage. Include unusable or expired stock, changing case mix, correlated demand, failures, recovery and competing service classes where they change the choice. Use OPS.10 for a capacity/service comparison or a model-qualified distributional claim.

A relation among average population, arrival rate and time can check consistent units and accounting. It cannot determine a protective percentile or establish that a buffer never empties. If replenishment behavior or shortage consequences are unknown, keep the part of the policy that is supported and return the exact missing sizing input.