05000458/FIN-2012003-06
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Finding | |
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Title | Licensee-Identified Violation |
Description | The licensee identified a violation of Technical Specification 5.4.1. Technical Specification 5.4.1 requires, in part, that written procedures shall be implemented covering the procedures recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978. Regulatory Guide 1.33, Section 9, says, in part, that maintenance that can affect the performance of safety-related equipment should be properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances. Contrary to the above, on January 18, 2008, the licensee performed maintenance that affected the performance of safety-related equipment with written instructions that were not appropriate to the circumstances. Specifically, work order WO-00098244, Task 04, Step 4.7, did not specify a torque value for valve SWP-MOV96B, actuator to yoke adapter plate, 1 1/8 diameter bolts. Bolts were tightened until the washers were compressed plus one more flat. The final torque value was marked N/A in the work package. The workers recognized that without the torque value for the bolts they could not perform the procedure as written. No condition report was generated. No procedure revision was generated. As a result of the inadequate applied bolt torque, on November 14, 2011, during performance of STP-256-6302, Division II Standby Service Water Quarterly Valve Operability Test, SWP-MOV96B service water return header isolation valve was stroked fully closed, at the fully closed position the valve operator rotated an additional 14 about the valve body. The station declared the system inoperable for repair. The finding is considered to be of very low safety significance (Green) because it was not a design or qualification deficiency; did not represent either a loss of system safety function, an actual loss of safety function of a single train, or an actual loss of safety function; and did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. The issue has been entered into the licensees corrective action program as Condition Report CR-RBS-2011-08148. |
Site: | River Bend |
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Report | IR 05000458/2012003 Section 4OA7 |
Date counted | Jun 30, 2012 (2012Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | K Clayton G George L Carson S Garchow J Melfi A Barrett G Larkin V Gaddy M Runyan R Latta C Alldredge |
INPO aspect | |
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Finding - River Bend - IR 05000458/2012003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (River Bend) @ 2012Q2
Self-Identified List (River Bend)
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