API 510 pressure vessel inspector would be responsible for preparing, implementing, and maintaining pressure vessel inspection programs in accordance with the quality management system (QMS), including report writing and documentation.

Pressure vessel inspections can refer to an inspection of the vessel's condition externally, internally, or both. In these inspections, inspectors may: Collect visual data regarding the condition of the vessel, including the condition of insulation, welds, joints, or structural connections.

Inspector is responsible for performing inspections using API standards for purposes of recommending and approving repairs or certifying compliance.