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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 48801 | 1 March 2013 15:45:00 | Other Unspec Reqmnt | 24 Hour Notification of Inoperable Scram Discharge Volume Valve Based on Nrc Bulletin 80-14 | Scram Discharge Volume (SDV) Valve Declared Inoperable. On March 1, 2013 at 1045 hours, with the reactor at 94% core thermal power (CTP), a scram discharge volume valve, CV-302-22B was declared inoperable as required by station procedural direction due to an observed degradation in opening stroke timing during performance of a compensatory surveillance test of the Scram Discharge Instrument Volume Vent and Drain Valve. This report is provided consistent with NRC IE Bulletin 80-14. Currently, station engineering is evaluating the valve stroke time trend data of CV-302-22B and plans to address this issue will be developed as part of the Corrective Action Program (CAP). Pilgrim Technical Specification (TS) 3.3.G applies due to the inoperability of CV-302-22B. This notification is being made in accordance with the NRC IE Bulletin 80-14, 'Degradation of BWR Scram Discharge Volume Capability,' Part A.3., which states, 'By procedures, require that the SDV vent and drain valve be normally operable, open and periodically tested. If these valves are not operable or are closed for more than 1 hour in any 24 hour period during operation, the reason shall be logged and the NRC notified within 24 hours (Prompt Notification).' A similar event report was generated for the same valve on February 18, 2013. Compensatory measures applicable to the original event report included a revised lubrication application and additional surveillance testing. Although surveillance tests subsequent to the original February 18, 2013 tested demonstrated valve operability, the initial March 1, 2013 test did not meet opening stroke time operability requirements for the valve. Subsequent stroke time testing has met the opening stroke time operability requirements for the valve. This event has no impact on the health and safety of the public. The USNRC Senior Resident Inspector has been informed. See similar event EN #48766. | ||
| ENS 48766 | 18 February 2013 10:15:00 | Other Unspec Reqmnt | 24 Hour Notification of Inoperable Scram Discharge Volume Valve Based on Nrc Bulletin 80-14 | On February 18, 2013 at 0515 hours, with the reactor at 100% core thermal power, a scram discharge volume valve, CV-302-22B was declared inoperable as required by station procedural direction due to an observed degradation in opening stroke time during performance of quarterly surveillance testing of the Scram Discharge Instrument Volume Vent and Drain Valves. This action was taken consistent with NRC IE Bulletin 80-14. Currently, station engineering is evaluating the valve stroke time trend data of CV-302-22B and a plan to address this issue will be developed as part of the Corrective Action Program. Pilgrim Technical Specification 3.3.G applies due to the inoperability of CV-302-22B. This notification is being made in accordance with NRC IE Bulletin 80-14, 'Degradation of BWR Scram Discharge Volume Capability,' Part A.3, which states, 'By procedures, require that the SDV (scram discharge volume) vent and drain valves be normally operable, open and periodically tested. If these valves are not operable or are closed for more than 1 hour in any 24 hour period during operation, the reason shall be logged and the NRC notified within 24 hours (Prompt Notification). This event has no impact on the health and safety of the public. The NRC Senior Resident Inspector has been informed. The licensee will inform the State. |