A licensee-identified violation of
10 CFR 50 Appendix B, Criterion V, Procedures, was discovered on September 22, 2011, when the 2A standby gas treatment train discharge
damper failed to fully open during surveillance testing.
10 CFR 50 Appendix B, Criterion V, requires in part that activities affecting quality shall be prescribed by documented instructions, procedures, or drawings, of a type appropriate to the circumstances and shall be accomplished in accordance with these instructions. Contrary to this requirement on January 14, 2010, the licensee failed to install a required
cotter pin in the 2A standby gas treatment train discharge
damper which led to the failure of the
damper on September 22, 2011. The inspectors screened the significance of this violation using
IMC 0609 Attachment 4, Table 4a where this finding screened as Green because the finding only represented a degradation of the radiological barrier function provided for the
standby gas treatment system. This issue is captured in the licensees corrective action program as CR 353886
