05000254/FIN-2011004-02
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Finding | |
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| Title | Valve Out of Position in Radwaste |
| Description | A self-revealed finding of very low safety significance with an associated NCV of Technical Specification (TS) 5.4.1.a was identified for failure to properly track the abnormal position of the waste sample tanks or floor drain sample tanks to waste collector tank valve, 1/2-2001-54. On August 12, 2011, an operator failed to position the valve in accordance with the operating procedure and did not follow station administrative procedures for tracking components that deviate from expected position. On August 17, a second operator transferred contaminated water to an unintended tank because of this deviation. This issue has been entered into the licensees corrective action program as Issue Report (IR) 1252370. The 1/2-2001-54 valve was shut immediately on discovery to stop water transfer. The performance deficiency was more than minor since it can reasonably be viewed as a precursor to a more significant event because mispositioned components could reasonably be expected to result in liquid spills or significant personnel exposure. This performance deficiency also adversely affected the Initiating Events Cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions in that a large, uncontrolled spread of contamination as a result of a mispositioned valve in the liquid radioactive waste system would impact access to plant areas and would complicate operator response. Using IMC 0609, Table 4a, under the Initiating Events Cornerstone, all questions were answered No. This issue was screened as Green, or very low safety significance. Inspectors concluded that this issue had a cross-cutting aspect in the area of Human Performance - Decision Making. The operator made a decision outside his authority, in that, senior reactor operator approval is required to leave the 1/2-2001-54 valve open and the operator did not engage supervision to obtain that authorization |
| Site: | Quad Cities  |
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| Report | IR 05000254/2011004 Section 1R04 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | M Munir A Dahbur M Mitchell M Phalen M Ring J Mcghee B Cushman R Edwards C Mathews L Rodriguez |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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Finding - Quad Cities - IR 05000254/2011004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2011Q3
Self-Identified List (Quad Cities)
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