05000285/FIN-2013009-02
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Finding | |
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| Title | Evaluation of Operating Cycles for Fatigue Monitoring Program |
| Description | Additionally, the team identified deficiencies in Program Basis Document PBD-31, Fatigue Monitoring, Revision 2, associated with the guidance provided to effectively implement the program as stated in the licensing basis documents. Specifically, the team found that PBD-31 did not: identify the procedures that would implement the program objectives and elements as described in the GALL Report, clearly identify the pressurizer surge line bounding locations that would be in the scope of the program, clearly identify the Class 2 and 3 components not included in the NUREG-1801 that were subject to fatigue, describe the transient cycles that would be tracked manually and with the WESTEMS counting software reference the vendor calculations and technical documents that supported the basis of the program and demonstrated compliance with the regulatory commitments, include specific guidance for appropriate corrective actions to take in case a cycle count approaches the design limit The team concluded that these deficiencies did not impact any fatigue evaluations or have any immediate impact on plant safety and that most of the deficiencies were administrative. The licensee documented the need to revise PBD-31 to correct these program deficiencies in Condition Report 2013-10658. Commitment 24 specified, Cycles which involve power changes, operating pressure and temperature variations, and feedwater additions with the plant in hot standby conditions will be conservatively estimated from a review of plant operating records to predict current cycles under the FMP. Once current number of cycles has been established, a review will be performed to determine if there is a potential for exceeding the allowable cycles and should be managed. If so, they\'ll be counted and managed by the FMP. The team determined that the licensee considered this commitment complete at the time of this inspection. The team determined that the licensee response to Request for Additional Information 4.3.1-1 provided the basis for this commitment. The team determined that the licensee specified they would perform a conservative estimate of cycles of specific types of cycles, as listed below, which were not being counted by existing plant procedures during the initial operating term: (a) plant loading/unloading at 10 percent of full power per minute (b) step load increase/decrease (c) operating variations of +100 pounds per square inch and +6 degrees Fahrenheit from normal operating pressure and temperature (d) feedwater additions of 300 gallons per minute at 32 degrees Fahrenheit with the plant in hotstandby condition The team identified that the licensee planned to track cycles related to Items (a) and (b) in WESTEMS during the period of extended operation; however, the licensee set the cycles to date at zero since they had not previously counted them in plant procedures. For the operating variations in Item (c), the licensee did not estimate the current number of cycles since they did not monitor them in plant procedures because of their frequent daily occurrence and low fatigue contribution. For the feedwater additions in Item (d), the licensee did not estimate the actual number of cycles accumulated in the current operating term. The team determined that the licensee did not conservatively estimate the number of cycles nor perform an evaluation of whether the potential for exceeding the allowable cycles in the period of extended operation existed, as described in their response to Request for Additional Information 4.3.1-1. The licensee documented the failure to count the cycles as specified in this commitment in Condition Report 2013-10756. Follow-up and evaluation of the resolution for estimating the number of cycles for Commitment 24 is an unresolved item. |
| Site: | Fort Calhoun  |
|---|---|
| Report | IR 05000285/2013009 Section 4OA5 |
| Date counted | Sep 30, 2013 (2013Q3) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | G Pick J Dixong Meyerg Miller G Pick J Melfi J Rivera Ortiz S Makor |
| INPO aspect | |
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Finding - Fort Calhoun - IR 05000285/2013009 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fort Calhoun) @ 2013Q3
Self-Identified List (Fort Calhoun)
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