ENS 53014: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
 
Line 10: Line 10:
| utype = GE-4, GE-4, GE-4
| utype = GE-4, GE-4, GE-4
| cfr = 10 CFR 50.72(b)(3)(v)(D)
| cfr = 10 CFR 50.72(b)(3)(v)(D)
| emergency class =  Non Emergency  
| emergency class =  Non Emergency
| notification date = 10/13/2017 22:46
| notification date = 10/13/2017 22:46
| retracted = Yes
| notification by = Stewart Wetzel
| notification by = Stewart Wetzel
| NRC officer = Richard Smith
| NRC officer = Richard Smith
| event date = CDT
| event date = 10/13/2017 17:00 CDT
| last update date = 06/08/2018
| last update date = 10/13/2017
| title = En Revision Imported Date  6/11/2018
| title = Accident Mitigation - High Pressure Coolant Injection Declared Inoperable
| event text = EN Revision Text: ACCIDENT MITIGATION - HIGH PRESSURE COOLANT INJECTION DECLARED INOPERABLE
| event text = On October 13, 2017 at 1700 CDT, Unit 1 High Pressure Coolant Injection (HPCI) was declared Inoperable due to discovery of a leak on a sensing line to 1-PCV-073-0043, Lube Oil Cooler & Gland Seal Condenser Pressure Control Valve.  The leak is a steady stream located where the sense line connects to the valve.  
On October 13, 2017 at 1700 CDT, Unit 1 High Pressure Coolant Injection (HPCI) was declared Inoperable due to discovery of a leak on a sensing line to 1-PCV-073-0043, Lube Oil Cooler & Gland Seal Condenser Pressure Control Valve.  The leak is a steady stream located where the sense line connects to the valve.  
This constitutes an unplanned HPCI System inoperability and requires an 8 hour ENS notification in accordance with 10 CFR 50.72(b)(3)(v)(D), due to the failure of a single train system affecting accident mitigation and a 60 day written report in accordance with 10 CFR 50.73(a)(2)(v)(D).
This constitutes an unplanned HPCI System inoperability and requires an 8 hour ENS notification in accordance with 10 CFR 50.72(b)(3)(v)(D), due to the failure of a single train system affecting accident mitigation and a 60 day written report in accordance with 10 CFR 50.73(a)(2)(v)(D).
The NRC Resident Inspector has been notified by the Licensee.
The NRC Resident Inspector has been notified by the Licensee.
* * * RETRACTION ON 6/8/18 AT 1500 EDT FROM BILL BALL TO BETHANY CECERE * * *
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2017/20171016en.html#en53014
ENS Event Number 53014, made on 10/13/2017 is being retracted.
NRC notification 53014 was made to ensure that the Eight-Hour Non-Emergency reporting requirements of 10 CFR 50.72 were met when a leak on a threaded union, along with piping vibration, was identified on U1 HPCls Lube Oil Cooler & Gland Seal Condenser Pressure Control Valve sensing line (1-PCV-073-0043).
A Past Operability Evaluation [POE] was performed under CR# 1347736. The evaluation concluded that HPCI was degraded, but met the threshold for TS operability. Specifically the vibrations shown were evaluated and deemed to not impact pipe integrity. These vibrations were also evaluated for seismic events. Based on this the POE concluded that HPCI was capable of performing its intended safety function for its designed mission time.
As such, the circumstances discussed in the report did not result in any condition that at the time of discovery could have prevented the fulfillment of the safety function of structures of system that are needed to remove residual heat. Thus, there was no impact on nuclear safety. Therefore, this event is not reportable under 10 CFR 50.72(b)(3)(v)(B).
TVA's evaluation of this event notification is documented in the corrective action program.
The licensee has notified the NRC Resident lnspector.
Notified R2DO (Ernstes).
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180611en.html#en53014
}}{{unit info
}}{{unit info
| Unit = 1  
| Unit = 1
| type =  
| type = GE-4
| Scram code = N  
| Scram code = N
| Reactor critical = Y  
| Reactor critical = Y
| Initial power = 100  
| Initial power = 100
| Initial reactor mode = Power Operation  
| Initial reactor mode = Power Operation
| Current power = 100  
| Current power = 100
| Current reactor mode = Power Operation  
| Current reactor mode = Power Operation
}}
}}


{{ENS-Nav}}[[Category:Power Reactor]]
{{ENS-Nav}}[[Category:Power Reactor]]

Latest revision as of 20:52, 30 October 2018

ENS 53014 +/-
Where
Browns Ferry Tennessee Valley Authority icon.png
Alabama (NRC Region 2)
Reporting
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident
Time - Person (Reporting Time:+0.77 h0.0321 days <br />0.00458 weeks <br />0.00105 months <br />)
Opened: Stewart Wetzel
22:46 Oct 13, 2017
NRC Officer: Richard Smith
Last Updated: Oct 13, 2017
53014 - NRC Website
Loading map...
v • d • e


Retrieved from "https://kanterella.com/w/index.php?title=ENS_53014&oldid=1160390"