ENS 45196
From kanterella
Jump to navigation
Jump to search
ENS Event | |
|---|---|
05:48 Jul 12, 2009 | |
| Title | Unusual Event Declared Due to a Loss of Offsite Power |
| Event Description | At 0135 EDT on 07/12 both Startup Transformers "SA" and "SB" were deenergized due to the loss of the 34.5kV power distribution lines (offsite power). The licensee declared an Unusual Event at 0148 EDT based on the loss of power to both transformers for greater than 15 minutes (EAL MU1).
As a result of the loss of offsite power, the Unit automatically scrammed with all control rods fully inserting. Both Emergency Diesel Generators EDG #1 and EDG #2 auto started and are carrying vital loads. The Unit is stable in Hot Shutdown with decay heat removal via the Isolation Condenser. The licensee reported that the transient may be due to a possible lightning strike caused by adverse weather. The licensee informed the NJ State Police and the NRC Resident Inspector.
At 0405 EDT on 07/12 the licensee terminated the Unusual Event based on restoration of offsite power and reenergizing both Startup Transformers. The licensee informed the NJ State Police and the NRC Resident Inspector. Notified R1 (Lew), EO (Holian), IRD (Gott), FEMA (Austin) and DHS (Inzer).
Licensee changed one reporting requirement from 50.72(b)(3)(v)(B) to 50.72(b)(3)(iv)(A). Notified R1DO (Dentel). |
| Where | |
|---|---|
| Oyster Creek New Jersey (NRC Region 1) | |
| Reporting | |
| Emergency class: | Unusual Event |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
| Time - Person (Reporting Time:+-3.62 h-0.151 days <br />-0.0215 weeks <br />-0.00496 months <br />) | |
| Opened: | Herb Tritt 02:11 Jul 12, 2009 |
| NRC Officer: | Steve Sandin |
| Last Updated: | Jul 14, 2009 |
| 45196 - 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 45196\u003C/a\u003E - \u003Ca href=\"/Oyster_Creek\" title=\"Oyster Creek\"\u003EOyster Creek\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EUnusual Event Declared Due to a Loss of Offsite Power\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 45196 - Oyster Creek\n","link":"","lat":39.81436111111111,"lon":-74.20560833333333,"icon":""}],"imageoverlays":null} | |
Unit 1 | |
|---|---|
| Reactor critical | Critical |
| Scram | A/R |
| Before | Power Operation (100 %) |
| After | Hot Shutdown (0 %) |
Oyster Creek with 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation | |
WEEKMONTHYEARENS 531532018-01-06T10:24:0006 January 2018 10:24:00
[Table view]10 CFR 50.72(a)(1)(i), Emergency Class Declaration Declaration of Unusual Event Due to Abnormal Intake Structure Level ENS 528392017-07-03T14:15:0003 July 2017 14:15:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Manual Reactor Scram on Low Condenser Vacuum ENS 523812016-11-20T08:42:00020 November 2016 08:42:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Scram During Main Turbine Testing ENS 518952016-04-30T22:04:00030 April 2016 22:04:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Scram During Reactor Startup Due to Increase in Unidentified Leak Rate ENS 510552015-05-07T21:27:0007 May 2015 21:27:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Scram Due to Turbine Trip ENS 509162015-03-22T18:14:00022 March 2015 18:14:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Reactor Scram Due to Aprm Hi Hi Signal ENS 505242014-10-12T06:51:00012 October 2014 06:51:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Scram Due to Decreasing Reactor Water Level ENS 502702014-07-11T07:14:00011 July 2014 07:14:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Scram Due to Loss of Main Condenser Vacuum ENS 501452014-05-28T14:37:00028 May 2014 14:37:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Due to Release of Chlorinated Water ENS 496482013-12-18T00:57:00018 December 2013 00:57:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Reactor Protection System (Rps) Actuation with the Reactor in Hot Shutdown ENS 496332013-12-14T08:37:00014 December 2013 08:37:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Scram Due to Rise in Reactor Pressure During Turbine Valve Testing ENS 494142013-10-06T15:30:0006 October 2013 15:30:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Scram Due to Degraded Condenser Vacuum ENS 494042013-10-03T10:43:0003 October 2013 10:43:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Scram During Startup ENS 484522012-10-29T22:55:00029 October 2012 22:55:00 10 CFR 50.72(b)(3)(v)(B), Loss of Safety Function - Remove Residual Heat, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Notice of Unusual Event Declared Due to High Intake Structure Water Level ENS 481252012-07-23T07:29:00023 July 2012 07:29:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Due to Loss of Offsite Power ENS 471882011-08-23T18:05:00023 August 2011 18:05:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Notification of an Unusual Event Due to a Seismic Event ENS 465072010-12-23T19:07:00023 December 2010 19:07:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Reactor Scram During Startup ENS 464432010-12-01T19:55:0001 December 2010 19:55:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event Declared Due to Excessive Rcs Leakage from "B" Recirc Pump Seal ENS 463152010-10-07T14:41:0007 October 2010 14:41:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Loss of 4160 Volt Safety Bus ENS 451962009-07-12T05:48:00012 July 2009 05:48:00 10 CFR 50.72(b)(3)(v)(A), Loss of Safety Function - Shutdown the Reactor, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unusual Event Declared Due to a Loss of Offsite Power ENS 450212009-04-25T22:05:00025 April 2009 22:05:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Scram Following Loss of Cooling to Main Transformer ENS 448222009-02-02T02:56:0002 February 2009 02:56:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Unusual Event and Reactor Scram Due to Main Transformer Fire ENS 446882008-11-29T02:01:00029 November 2008 02:01:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Scram Due to Main Transformer Fault ENS 438542007-12-19T16:45:00019 December 2007 16:45:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Manual Reactor Scram Due to Lowering Reactor Level ENS 434952007-07-17T09:22:00017 July 2007 09:22:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(b)(3)(iv)(A), System Actuation Automatic Reactor Scram on Low Reactor Vessel Water Level (Rvwl) ENS 425582006-05-06T10:07:0006 May 2006 10:07:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Unplanned Manual Reactor Scram During Shutdown ENS 419452005-08-25T03:37:00025 August 2005 03:37:00 10 CFR 50.72(b)(3)(iv)(A), System Actuation Emergency Diesel Generator Automatic Start Due to Bus Supply Breaker Trip ENS 418992005-08-06T08:03:0006 August 2005 08:03:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Alert Declared Due to Low Intake Water Level ENS 417412005-06-02T01:09:0002 June 2005 01:09:00 10 CFR 50.72(b)(2)(xi), Notification to Government Agency or News Release, 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Reactor Scram Due to Generator Trip/Turbine Trip Following Offsite Electical Transient ENS 407782004-05-27T04:33:00027 May 2004 04:33:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Automatic Reactor Scram While Performing Scheduled Shutdown ENS 404562004-01-17T04:16:00017 January 2004 04:16:00 10 CFR 50.72(a)(1)(i), Emergency Class Declaration Noue Declared at Oyster Creek Due to Intake Low Water Level ENS 400952003-08-22T06:59:00022 August 2003 06:59:00 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation Turbine Trip Causes Automatic Reactor Scram at Oyster Creek 2018-01-06T10:24:00 | |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_45196&oldid=425764"