When might a resident source inspector be required at a shop during manufacture and fabrication?

The correct answer isA. In API source inspection practice, the decision to assign aresident source inspectoris driven primarily by therisk level of the equipment or fabrication activity. When the risk assessment identifies an item ashigh or highest risk, increased surveillance may be necessary because the consequences of defects, missed hold points, schedule slippage, or nonconformance can be significant. A resident inspector provides continuous or frequent monitoring of manufacturing progress, verification of critical stages, review of records, and immediate reporting of issues that could affect quality, cost, or delivery.

Option B is not sufficient by itself. Being sourced from a foreign vendor may affect logistics or planning, but it does not automatically justify a resident inspector. Option C is based on convenience, not inspection need. Option D may create project pressure, but a busy shop or tight schedule alone is not the primary criterion for resident assignment.

The API approach is risk-based: surveillance intensity, including the possible need for a resident inspector, is determined by thecriticality and risk classificationof the equipment and the potential impact of nonconformance during manufacture.