05000220/FIN-2012004-04
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Finding | |
|---|---|
| Title | Failure to Maintain Radiation Exposure ALARA During Refueling Activities |
| Description | A self-revealing Green finding (FIN) was identified due to NMPNS having unplanned, unintended occupational collective dose resulting from deficiencies in As Low As Reasonably Achievable (ALARA) planning and work control while performing refueling activities at Unit 2. Specifically, inadequate work planning and control of refueling activities resulted in unplanned, unintended collective exposure that was greater than 50 percent above the intended collective exposure, and greater than five person-rem due to conditions that were reasonably within NMPNSs ability to foresee and correct. These factors resulted in the collective exposure for refueling activities increasing from the original estimate of 31 person-rem to an actual dose of 56 person-rem. NMPNS entered this issue into its corrective action program as CR 2012-005939. This finding is more than minor because it was associated with the program and process attribute of the Occupational Radiation Safety cornerstone, and affected the cornerstone objective to ensure the adequate protection of the worker health and safety from exposure to radiation from radioactive material during routine reactor operation. This performance deficiency is similar to example 6.i of IMC 0612, Appendix E Examples of Minor Issues in that the actual collective dose exceeded 5 person-rem and exceeded the planned, intended dose by more than 50 percent. The inspectors evaluated the finding using Attachment 0609.04, Initial Characterization of Findings, of Inspection Manual Chapter (IMC) 0609, Significance Determination Process. The finding was determined to be of very low safety significance (Green) because NMPNS\\\'s current three year rolling average collective dose (143 person-rem/reactor year for 2009 to 2011) is less than the criterion of 240 person-rem per boiling water reactor unit. The finding has a cross-cutting aspect in the area of human performance, work control, in that the job site conditions which impacted human performance were not adequately incorporated into the outage plan. Specifically, the ALARA planning and work controls for refueling activities did not avert a significant unplanned and unintended collective occupational dose. |
| Site: | Nine Mile Point  |
|---|---|
| Report | IR 05000220/2012004 Section 2RS2 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | Finding: Green |
| cornerstone | Pr Safety, Or Safety |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71124.02 |
| Inspectors (proximate) | L Scholl D Dempsey K Kolaczyk B Haagensen G Dentel J Krafty C Crisden B Dionne E Miller |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Nine Mile Point - IR 05000220/2012004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Nine Mile Point) @ 2012Q3
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