05000313/FIN-2011005-02
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Finding | |
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| Title | Failure to Implement Procedure Results in Lowering Spent Fuel Pool Level by 0.6 Feet |
| Description | The inspectors documented a self-revealing, non-cited violation of Unit 1 Technical Specification 5.4.1.a for the failure to implement station procedure OP-1104.006 Spent Fuel Cooling System, Revision 51. Specifically, SF-10, flow control to purification loop valve, was found 3 turns open when it was required to be closed. This resulted in the spent fuel pool level lowering by 0.6 feet, which was below procedural limits, when the fuel transfer canal was placed in purification and SF-45, transfer tube isolation valve, was closed to support diving operations in the Unit 1 spent fuel pool tilt pit. After receiving the spent fuel pool low level alarm, operations personnel secured purification, and opened SF-45 which allowed water level to return to normal. Additional actions taken by the licensee included identifying that SF-10 requires a torque amplifying device to operate. The issue was entered into the licensees corrective action program as Condition Report CR-ANO-1-2011-2498. The failure of operations personnel to follow the requirements of procedure OP-1104.006 and close SF-10 prior to initiating fuel transfer canal on purification, which resulted in an unexpected loss of approximately 4500 gallons of water from the spent fuel pool, is a performance deficiency. The performance deficiency is more than minor because it is associated with the configuration control attribute of the Barrier Integrity cornerstone and adversely affects the cornerstone objective to provide reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events and is therefore a finding. Using Manual Chapter 0609.04, Phase 1 - Initial Screening and Characterization of Findings, the finding was determined to have very low safety significance (Green) because the finding did not result in the loss of spent fuel cooling, did not result from fuel handling errors that caused damage to the fuel clad integrity or a dropped assembly and did not result in a loss of spent fuel inventory of greater than 10 percent of the spent fuel pool volume. The finding was determined to have a cross-cutting aspect in the area of human performance, associated with the work control component in that the licensee failed to ensure that work activities were appropriately coordinated to support long term equipment reliability by limiting operator work-arounds when a torque amplifying device was required to shut SF-10 H.3(b) |
| Site: | Arkansas Nuclear  |
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| Report | IR 05000313/2011005 Section 1R20 |
| Date counted | Dec 31, 2011 (2011Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | A Sanchez D Allen G Guerra J Rotton M Williams R Kopriva W Schaup |
| CCA | H.5, Work Management |
| INPO aspect | WP.1 |
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Finding - Arkansas Nuclear - IR 05000313/2011005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Arkansas Nuclear) @ 2011Q4
Self-Identified List (Arkansas Nuclear)
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