ML14217A390: Difference between revisions
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| number = ML14217A390 | | number = ML14217A390 | ||
| issue date = 08/05/2014 | | issue date = 08/05/2014 | ||
| title = | | title = PNO-II-14-006 - Shutdown Greater than 72 Hours Due to Increased Primary Coolant Leakage | ||
| author name = Bartley J H, Kontz C R | | author name = Bartley J H, Kontz C R | ||
| author affiliation = NRC/RGN-II/DRP/RPB6 | | author affiliation = NRC/RGN-II/DRP/RPB6 | ||
| Line 16: | Line 16: | ||
=Text= | =Text= | ||
{{#Wiki_filter:August 5, 2014 | {{#Wiki_filter:August 5, 2014 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-II-14-006 | ||
Facility Licensee Emergency Classification Browns Ferry Unit 2 ___ Notification of Unusual Event Tennessee Valley Authority (TVA) ___ Alert Athens, AL ___ Site Area Emergency Docket: 50-260 ___ General Emergency _X_ Not Applicable | |||
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 II staff (Atlanta, GA) | |||
Facility Licensee Emergency Classification Browns Ferry Unit 2 ___ Notification of Unusual Event Tennessee Valley Authority (TVA) ___ Alert Athens, AL ___ Site Area Emergency Docket: 50-260 ___ General Emergency | |||
_X_ Not Applicable | |||
==SUBJECT:== | ==SUBJECT:== | ||
SHUTDOWN GREATER THAN 72 HOURS DUE TO INCREASED PRIMARY COOLANT LEAKAGE On August 2, 2014, Unit 2 experienced leakage of 3.33 gallons per minute (gpm) in the drywell. The licensee reduced reactor power to allow drywell entry to investigate the leakage. Following investigation, the licensee identified two separate leaks in containment; a primary coolant leak on the residual heat removal (RHR) shutdown cooling common suction line from a chemical cleaning injection line; and a cooling water leak on the lower motor cooler for the "A" Recirculation pump. On August 3, 2014, at 10:00 a.m., the licensee shutdown the unit to begin repair efforts. | SHUTDOWN GREATER THAN 72 HOURS DUE TO INCREASED PRIMARY COOLANT LEAKAGE | ||
The NRC resident inspectors are closely | |||
This preliminary notification is issued for information only. | On August 2, 2014, Unit 2 experienced leakage of 3.33 gallons per minute (gpm) in the drywell. The licensee reduced reactor power to allow drywell entry to investigate the leakage. Following investigation, the licensee identified two separate leaks in containment; a primary coolant leak on the residual heat removal (RHR) shutdown cooling common suction line from a chemical cleaning injection line; and a cooling water leak on the lower motor cooler for the "A" Recirculation pump. On August 3, 2014, at 10:00 a.m., the licensee shutdown the unit to begin repair efforts. | ||
Region II received initial notification of this occurrence by telephone call from the licensee at approximately 2:20 p.m. CDT on August 02, | |||
The NRC resident inspectors are closely moni toring the licensee's evaluation and repair activities. | |||
This preliminary notification is issued for information only. | |||
Region II received initial notification of this occurrence by telephone call from the licensee at approximately 2:20 p.m. CDT on August 02, 201 | |||
: 4. Alabama officials have been notified. The information presented herein has been discussed with the licensee and is current as of 1:00 p.m. CDT on August 5, 2014. | |||
ADAMS Accession Number: ML14217A390 Contact: Craig Kontz Jonathan Bartley (404) 997-4715 (404) 997-4607 Craig.kontz@nrc.gov Jonathan.Bartley@nrc.gov}} | |||
Latest revision as of 05:33, 11 April 2019
| ML14217A390 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/05/2014 |
| From: | Bartley J H, Kontz C R Reactor Projects Region 2 Branch 6 |
| To: | |
| References | |
| PNO-II-14-006 | |
| Download: ML14217A390 (1) | |
Text
August 5, 2014 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE - PNO-II-14-006
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 II staff (Atlanta, GA)
Facility Licensee Emergency Classification Browns Ferry Unit 2 ___ Notification of Unusual Event Tennessee Valley Authority (TVA) ___ Alert Athens, AL ___ Site Area Emergency Docket: 50-260 ___ General Emergency
_X_ Not Applicable
SUBJECT:
SHUTDOWN GREATER THAN 72 HOURS DUE TO INCREASED PRIMARY COOLANT LEAKAGE
On August 2, 2014, Unit 2 experienced leakage of 3.33 gallons per minute (gpm) in the drywell. The licensee reduced reactor power to allow drywell entry to investigate the leakage. Following investigation, the licensee identified two separate leaks in containment; a primary coolant leak on the residual heat removal (RHR) shutdown cooling common suction line from a chemical cleaning injection line; and a cooling water leak on the lower motor cooler for the "A" Recirculation pump. On August 3, 2014, at 10:00 a.m., the licensee shutdown the unit to begin repair efforts.
The NRC resident inspectors are closely moni toring the licensee's evaluation and repair activities.
This preliminary notification is issued for information only.
Region II received initial notification of this occurrence by telephone call from the licensee at approximately 2:20 p.m. CDT on August 02, 201
- 4. Alabama officials have been notified. The information presented herein has been discussed with the licensee and is current as of 1:00 p.m. CDT on August 5, 2014.
ADAMS Accession Number: ML14217A390 Contact: Craig Kontz Jonathan Bartley (404) 997-4715 (404) 997-4607 Craig.kontz@nrc.gov Jonathan.Bartley@nrc.gov