ENS 40229
From kanterella
Jump to navigation
Jump to search
ENS Event | |
---|---|
19:31 Oct 7, 2003 | |
Title | High Pressure Core Spray Declared Inoperable (Hpcs) |
Event Description | At 1231 hours0.0142 days <br />0.342 hours <br />0.00204 weeks <br />4.683955e-4 months <br /> on October 7, 2003, the High Pressure Core Spray (HPCS) system at Columbia Generating Station was declared inoperable due to a failure to maintain system pressure while the system was being operated with the keep-fill piping isolated for maintenance on the system waterleg pump. This action rendered the HPCS system unable to perform its safety function to mitigate the consequences of an accident. Upon discovery of the inoperable condition, the Reactor Core Isolation Cooling system was verified to be operable and HPCS was restored to operable status at 1538 in accordance with the Required Action of plant Technical Specifications Limiting Condition for Operability 3.5.1, Conditions B.1 and B.2. All other Emergency Core Cooling System (ECCS) were operable during the time the HPCS system was inoperable. This event is being reported pursuant to the guidance for reporting under 50.72(b)(3)(v)(D) contained in NUREG 1022, which states for single train systems that perform a safety function, loss of a single train would prevent the fulfillment of the safety function and therefore is reportable.
The NRC Resident Inspector will be notified of this event by the licensee. |
Where | |
---|---|
Columbia Generating Station Washington (NRC Region 4) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+0.38 h0.0158 days <br />0.00226 weeks <br />5.20524e-4 months <br />) | |
Opened: | Stephen Magill 19:54 Oct 7, 2003 |
NRC Officer: | John Mackinnon |
Last Updated: | Oct 7, 2003 |
40229 - 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 40229\u003C/a\u003E - \u003Ca href=\"/Columbia\" title=\"Columbia\"\u003EColumbia\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E\u003C/b\u003E\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EHigh Pressure Core Spray Declared Inoperable (Hpcs)\n\u003C/p\u003E\u003C/div\u003E","title":"ENS 40229 - Columbia\n","link":"","lat":46.55068333333333,"lon":-119.488975,"icon":"/w/images/7/7c/Energy_Northwest_icon.png"}],"imageoverlays":null} | |
Unit 2 | |
---|---|
Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
Retrieved from "https://kanterella.com/w/index.php?title=ENS_40229&oldid=93854"