OPS.8.1:1 - Problem frame

Use this when finishing one operation can trigger new work even though the previous result may still need correction, another visit or downstream acceptance. A specialist finishes an analysis and begins a long client session; the analysis then returns for urgent revision. A part leaves a machine but may return after inspection. An admission limit frees a place at local completion while later work still needs the same resources.

Choose what event should permit another start, what remaining and possible work that start must accommodate, and how the decision changes when feedback arrives. The result is a release rule that can be operated: a signal, eligible next work, a load or time condition, treatment of returns and a response when the conditions no longer fit.

Start with the result and resource that the rule must protect. If the existing rule already handles these returns adequately, use it through OPS.5 rather than reconstruct it for every admission. Identifying the resource that limits throughput, when that is uncertain, is a separate contribution from OPS.9.