STAGGERING TESTING FOR THE REFUELING SURVEILLANCE REQUIREMENTS

摘要

The approach for changing Technical Specification surveillance frequencies requires the relocation of the periodic surveillance frequencies to a licensee controlled program; the Surveillance Frequency Control Program. After relocation, changes can be made to the Surveillance Frequencies following NEI 04-10, Rev. 1 guidance. This guidance requires an assessment of the impact of the proposed change on plant risk, as well as an assessment of the impact on defense-in-depth and safety margins. Other considerations include reviewing the operating experience of the impacted systems and components, component conditioning effects of the surveillance, component operating environment, requirements in industry codes and standards, and regulatory requirements. This paper focuses on extending the refueling surveillance frequencies to a staggered basis and applies the approach to the Integrated Engineered Safety Features/Loss of Offsite Power test at the Vogtle Electric Generating Station, Units 1 and 2.