05000416/FIN-2010004-07
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | Technical Specification Section 5.4.1.a requires that written procedures be established, implemented, and maintained covering the applicable procedures recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978. Section 9(e) of Appendix A requires general procedures for the control of maintenance, repair, replacement, and modification work. The regulatory guide also states that those procedures should include information necessary for minimizing radiation exposure to workmen, in preparing the detailed work procedures. Contrary to this, on March 18, 2010, while setting the steam dryer assembly into the reactor vessel, an area radiation monitor alarmed on the refuel bridge due to a loss of water shielding over the dryer assembly. The maximum dose rate measured on the refuel bridge was 136 mrem per hour. The licensee determined that neither the maintenance procedure nor the operations procedure specified a minimum water level in the reactor vessel to ensure adequate shielding of the steam dryer assembly. The licensee immediately evacuated the area upon receiving the alarms, restored reactor water level, and administratively established minimum and maximum reactor vessel water levels prior to proceeding with the evolution. Since the licensees procedure 08-S-02-75, Coverage and Control of Refueling Operations, Revision 11, required the placement of the area radiation monitor on the refuel bridge during movement of those assemblies, this issue is considered licensee identified. The issue was documented in the licensees corrective action program as Condition Reports CR-GGN-2010-04333 and CR-GGN-2010-04366. This violation is considered to be of very low safety significance because the finding did not involve the ALARA program, did not result in an overexposure, did not involve a substantial potential for overexposure, and did not compromise the ability to assess dose. |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2010004 Section 4OA7 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | No Cornerstone |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Graves D Stearns R Smith A Barrett V Gaddy |
| INPO aspect | |
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Finding - Grand Gulf - IR 05000416/2010004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2010Q3
Self-Identified List (Grand Gulf)
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