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Category:NRC Preliminary Notification of Event/Occurrence
MONTHYEARPNO-I-14-003, Millstone, Unit 2. Shutdown Greater than 72 Hours Due to TS-Required Shutdown for the TDAFW2014-07-29029 July 2014
PNO-I-14-003 - Millstone, Unit 2. Shutdown Greater than 72 Hours Due to TS-Required Shutdown for the TDAFW
PNO-I-14-002, A - UPDATE- Millstone Dual Unit Trip with Loss of Offsite Power2014-06-0202 June 2014
PNO-I-14-002A - UPDATE- Millstone Dual Unit Trip with Loss of Offsite Power
ML14148A0142014-05-28028 May 2014
PNO-I-14-002 - Millstone Dual Unit Trip with Loss of Offsite Power
PNO-I-09-007, A: Update - Millstone Unit 3 Reactor Trip and Shutdown Greater than 72 Hours2010-01-0606 January 2010
PNO-I-09-007A: Update - Millstone Unit 3 Reactor Trip and Shutdown Greater than 72 Hours
ML0935503012009-12-21021 December 2009
PNO-I-09-007: Millstone Unit 3 Reactor Trip and Shutdown Greater than 72 Hours
PNO-I-09-004, A: Updated - Millstone Unit 2 Reactor Trip and Shutdown Greater than 72 Hours2009-07-27027 July 2009
PNO-I-09-004A: Updated - Millstone Unit 2 Reactor Trip and Shutdown Greater than 72 Hours
ML0918703212009-07-0303 July 2009
PNO-I-09-004: Millstone Unit 2 Reactor Trip and Shutdown Greater than 72 Hours
ML0814805072008-05-27027 May 2008
PNO-08-007 Ue Declared Due to LOOP at Millstone Unit 2
ML0609703342006-04-0707 April 2006
PNO-I-06-5A, Supplemental Information on Shutdown Greater than 72 Hours - Millstone Unit 2 Turbine Driven Auxiliary Feedwater Pump Rotating Assembly Degradation
PNO-I-06-005, Millstone Unit 2, Shutdown Greater than 72 Hours - Turbine Driven Auxiliary Feedwater Pump Rotating Assembly Degradation2006-04-0303 April 2006
PNO-I-06-005: Millstone Unit 2, Shutdown Greater than 72 Hours - Turbine Driven Auxiliary Feedwater Pump Rotating Assembly Degradation
ML0510804842005-04-18018 April 2005
PNO-I-05-17: Alert Declared at Millstone 3 Due to a Main Steam Safety Valve Not Reseating After an SI Actuation on Low Main Steam Line Pressure
ML0514601642005-04-18018 April 2005
PNO-I-05-17: Millstone Unit 3, Alert Declared at Millstone 3 Due to a Main Steam Safety Valve Not Reseating After an SI Actuation on Low Main Steam Line Pressure
PNO-I-05-017, Alert Declared at Millstone 3 Due to Main Steam Safety Valve Not Reseating After an SI Actuation on Low Main Steam Line Pressure2005-04-18018 April 2005
PNO-I-05-017: Alert Declared at Millstone 3 Due to Main Steam Safety Valve Not Reseating After an SI Actuation on Low Main Steam Line Pressure
PNO-I-03-004, Millstone Nuclear Power Station, Unit 2, Unusual Events Declared Due to Reactor Trip with Leakage from Charging System (EN Nos. 39644 and 39645)2003-03-11011 March 2003
PNO-I-03-004: Millstone Nuclear Power Station, Unit 2, Unusual Events Declared Due to Reactor Trip with Leakage from Charging System (EN Nos. 39644 and 39645)
2014-07-29
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Date: July 29, 2014 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-I-14-003 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. Some of the information may not yet be fully verified or evaluated by the Region I staff.
Facility Licensee Emergency Classification Dominion Nuclear Connecticut, Inc. __ Notification of Unusual Event Millstone Power Station, Unit 2 ___ Alert Waterford, CT ___ Site Area Emergency Docket No. 50-336 ___ General Emergency License No. DPR-65 _X Not Applicable
SUBJECT:
MILLSTONE POWER STATION UNIT 2: SHUTDOWN GREATER THAN 72 HOURS DUE TO A TECHNICAL SPECIFICATIONS REQUIRED SHUTDOWN FOR THE TURBINE DRIVEN AUXILIARY FEEDWATER PUMP On July 23, 2014, Millstone Power Station Unit 2 entered Technical Specification 3.7.1.1, Action C, for the turbine-driven auxiliary feedwater pump due to insufficient pump flow in recirculating mode. At 2:11 p.m. on July 26, 2014, Millstone Unit 2 commenced the shutdown required by Technical Specifications using normal station procedures. Troubleshooting and repairs will continue to attempt to identify and correct the issue.
The unit is currently in Mode 4, and all safety-related systems and equipment required for safe plant shutdown are available.
The NRC resident inspectors are closely monitoring Dominions evaluation and repair activities.
This preliminary notification is issued for information only.
Region I received initial notification of this occurrence by telephone call from the licensee at approximately 2:00 p.m. on July 26, 2014. Connecticut officials have been notified.
The information presented herein has been discussed with the licensee and is current as of 11:00 a.m. on July 29, 2014.
ADAMS Accession Number: ML14210A198 CONTACT: Raymond McKinley, Projects Branch 5 (610) 337-5150 Raymond.McKinley@nrc.gov
ML14210A198 Non-Sensitive Publicly Available SUNSI Review Sensitive Non-Publicly Available OFFICE RI/DRP RI/DRP RI/PAO RI/SLO RI/ORA NAME RMcKinley/SWS for HNieh/MLS for DScrenci/NAS for NMcNamara/DBT for WDean/DCL for DATE 7/28/14 7/28/14 7/28/14 7/28/14 7/29/14
