High Pressure Coolant Injection (HPCI) system risk-based inspection guide for Enrico Fermi Atomic Power Plant, Unit 2

This report discusses the High Pressure Coolant Injection (HPCI) system which has been examined from a risk perspective. A System Risk- Based Inspection Guide (S-RIG) has been developed as an aid to HPCI system inspections at the Enrico Fermi Unit 2 Nuclear Power Plant. Included in this S-RIG is a discussion of the role of HPCI in mitigating accidents and a presentation of a PRA-based failure modes which could prevent proper operation of the system. The S-RIG uses industry operating experience, including plant-specific illustrative examples to augment the basic PRA failure modes. It is designed to be used as a reference for both routine inspections and the evaluation of the significance of component failures.