10 CFR Part 50, Appendix B, Criterion 5 Instructions, Procedures, and Drawings requires that activities affecting quality shall be prescribed by documented instructions, procedures, or drawings, of a type appropriate to the circumstances and shall include appropriate quantitative or qualitative acceptance criteria for determining important activities had been satisfactorily accomplished. Contrary to those requirements, in March 2006 licensee personnel performed activities that caused the ventilation fan MC75-1 (component cooling water train 1 ventilation system) to be returned to service rotating backwards. The discrepancy was not discovered by the licensee until September 2008. This event is documented in the licensees
CAP as CR 08- 46052. The finding is of very low safety significance because the licensees calculations indicate that the system would have been able to perform its design function
