A self-revealing, Green, non-cited violation of
10 CFR 50, Appendix B, Criterion XV, Nonconforming Materials, Parts, or Components was identified for failure to repair or rework nonconforming parts in accordance with documented procedures which resulted in the failure of a Unit 1 pressurizer power operated relief valve (
PORV). The licensee entered this problem into their corrective action program as condition report 328709 to review extent of condition and determine addition corrective actions. The inspectors reviewed
IMC 0612, Appendix B, and determined the finding was more than minor because if left uncorrected the performance deficiency would have the potential to lead to a more significant safety concern. The inspectors reviewed
IMC0609, Appendix G because the plant was shut down at the time, and determined that the finding did not require a quantitative assessment and thus screened as Green. The cause of this finding involved the cross-cutting area of human performance, the component of work practices, and the aspect of procedural compliance,
H.4(b), because the licensee failed to follow procedural requirements that precluded work orders from containing instructions that alter plant/SSC design unless authorized by approved design documents or plant procedures
