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A Green finding was identified by the NRC … A Green finding was identified by the NRC because senior reactor operators were trained to interpret and execute the Primary Containment Control Emergency Operating Procedure (EOPPC) step PCP-10 in accordance with guidance of the Transient Mitigation Guidelines (TMG) section of the Operations Department Manual. This guidance results in failure to perform the EOP step as written. As a result, exam crews observed by the inspectors did not perform an emergency reactor vessel depressurization when suppression chamber pressure exceeded the limits of the pressure suppression pressure curve. Short term corrective action included a night order book entry directing operators to follow the Primary Containment EOP as written. Long term corrective action for this finding will include clarification of the TMG to ensure EOPs are performed as written. This finding is greater than minor because it affects the Mitigating Systems Cornerstone objective of maintaining reliable performance of the operators in responding to initiating events. This finding is not suitable for SDP evaluation, but has been reviewed by NRC management and determined to be of very low safety significance. This is because it involves an issue of procedure quality and implementation identified in a training and evaluation setting, rather than an operator error during an actual plant eventperator error during an actual plant event +

Discovered date

23:59:59, 31 March 2008 +

Docket

05000410 +

Event date

23:59:59, 31 March 2008 +

Finding integer

1 +

Finding type

Finding +

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Identified by

NRC identified +

Inspection procedure

IP 71152, Problem Identification and Resolution (PI&R) +

Inspection report

IR 05000410/2008301 +

Inspector

J D'Antonio +, G Johnson +, S Hansell +, R Devercelly + and Raymond Mckinley +

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04:14:30, 22 February 2018 +

Person