ENS 53497: Difference between revisions
From kanterella
Jump to navigation
Jump to search
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (StriderTol Bot change) |
||
(One intermediate revision by the same user not shown) | |||
Line 13: | Line 13: | ||
| notification date = 07/09/2018 17:01 | | notification date = 07/09/2018 17:01 | ||
| notification by = Anthony Alsup | | notification by = Anthony Alsup | ||
| NRC officer = Steven | | NRC officer = Steven Vitto | ||
| event date = 07/09/2018 00:00 CDT | | event date = 07/09/2018 00:00 CDT | ||
| last update date = 07/09/2018 | | last update date = 07/09/2018 | ||
Line 20: | Line 20: | ||
There was no impact to the health and safety of the public or plant personnel as a result of this condition. | There was no impact to the health and safety of the public or plant personnel as a result of this condition. | ||
The NRC Resident Inspector has been notified. | The NRC Resident Inspector has been notified. | ||
A condition report has been entered into the Licensee's Corrective Action Program to capture this event. | A condition report has been entered into the Licensee's Corrective Action Program to capture this event. | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180710en.html#en53497 | | URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180710en.html#en53497 | ||
}}{{unit info | }}{{unit info |
Latest revision as of 00:06, 24 February 2020
ENS Event | |
---|---|
05:00 Jul 9, 2018 | |
Title | High Pressure Coolant Injection System Declared Inoperable |
Event Description | On 07/09/2018 at 1111 CDT, Browns Ferry Unit 1 Operators identified U1 High Pressure Cooling Injection system steam supply valves were isolated. After reviewing ICS [Integrated Computer System], Operations determined isolation occurred at 0958 CDT during performance of surveillance testing. The Browns Ferry Nuclear Plant Unit 1 High Pressure Coolant Injection (HPCI) system was declared inoperable at 0958 CDT due to an inadvertent isolation that occurred during testing. During performance of surveillance procedure 1-SR-3.3.6.1.2(3B) HPCI System Steam Supply Low Pressure Functional test, an erroneous signal was induced causing actuation of primary containment isolation system group IV (i.e., HPCI Isolation). Technical Specification 3.5.1, ECCS-Operating, Condition C was entered as a result of the inoperable HPCI system. This constitutes an unplanned HPCI system inoperability and requires an 8-hour NRC notification in accordance with 10 CFR 50.72(b)(3)(v)(D). The erroneous signal was cleared and the HPCI isolation was reset. Upon reset of the isolation signal, the HPCI system was returned to available status. The HPCI system was unavailable for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and 55 minutes, however the HPCI system remains inoperable.
There was no impact to the health and safety of the public or plant personnel as a result of this condition. The NRC Resident Inspector has been notified. A condition report has been entered into the Licensee's Corrective Action Program to capture this event. |
Where | |
---|---|
Browns Ferry 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:+12.02 h0.501 days <br />0.0715 weeks <br />0.0165 months <br />) | |
Opened: | Anthony Alsup 17:01 Jul 9, 2018 |
NRC Officer: | Steven Vitto |
Last Updated: | Jul 9, 2018 |
53497 - NRC Website
Loading map... {"minzoom":false,"maxzoom":false,"mappingservice":"leaflet","width":"350px","height":"250px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"zoom":6,"defzoom":14,"layers":["OpenStreetMap"],"image layers":[],"overlays":[],"resizable":false,"fullscreen":false,"scrollwheelzoom":true,"cluster":false,"clustermaxzoom":20,"clusterzoomonclick":true,"clustermaxradius":80,"clusterspiderfy":true,"geojson":"","clicktarget":"","imageLayers":[],"locations":[{"text":"\u003Cb\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u003Ca class=\"mw-selflink selflink\"\u003EENS 53497\u003C/a\u003E - \u003Ca href=\"/Browns_Ferry\" title=\"Browns Ferry\"\u003EBrowns Ferry\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EHigh Pressure Coolant Injection System Declared Inoperable\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 53497 - Browns Ferry\n","link":"","lat":34.70418333333333,"lon":-87.11844722222222,"icon":"/w/images/c/ce/Tennessee_Valley_Authority_icon.png"}],"imageoverlays":null} | |
Unit 1 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_53497&oldid=2508347"