05000482/FIN-2012004-09
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Finding | |
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Title | Licensee-Identified Violation |
Description | Title 10 CFR Part 20.1501(a) requires that each licensee shall make or cause to be made, surveys that describe magnitude and extent of potential radiation hazards. Contrary to this requirement, on November 22, 2011, the licensee identified a failure to perform adequate surveys to verify radiological conditions within the auxiliary building when a dose rate alarm occurred from an area radiation monitor (ARM) spike. The ARM is located in the southeast corner of room 1203 in the pipe chase of the 1988 foot elevation of the auxiliary building. A health physics technician was sent to investigate the alarm and survey the area. The technician found a pipe with contact dose rates of 260 mrem per hour and 100 mrem per hour at 30 cm. The general area dose rate met the requirement of a high radiation area. A second health physics technician verified the dose rates. The technicians received approval to post the area as a high radiation area. A couple of hours later, a third health physics technician was requested to survey the same area by the on-call health physics supervisor. The third health physics technician determined that the dose rates did not meet the requirements of a high radiation area, with the maximum dose rate less than 100 mrem per hour at 30 cm, and requested that the area be down posted to a radiation area. Without a verification of the survey, the on-call supervisor approved the down post to a radiation area. Upon further survey verification on November 27, 2011, it was determined that the dose rates identified by the third technician were incorrect and the area was, in fact, a high radiation area. Thus, from November 22 to 27, 2011, the area was characterized as an unposted high radiation area due to a failure to properly survey. This issue was documented in the licensees corrective action program as condition report 00046303. Using the Occupational Radiation Safety Significance Determination Process, the inspectors determined the finding had very low safety significance (Green) because: (1) it was not an as low as is reasonably achievable finding, (2) there was no overexposure, (3) there was no substantial potential for an overexposure, and (4) the ability to assess dose was not compromised. There is no crosscutting component because this is a licensee-identified finding. |
Site: | Wolf Creek |
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Report | IR 05000482/2012004 Section 4OA7 |
Date counted | Sep 30, 2012 (2012Q3) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | C Long C Peabody C Speer G Guerra J Laughlin J Watkins L Ricketson N Greene N Makris N O'Keefe R Kopriva S Hedger |
INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2012004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2012Q3
Self-Identified List (Wolf Creek)
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