Browse wiki
Jump to navigation
Jump to search
Unidentified or pressure boundary leakage … Unidentified or pressure boundary leakage greater than 10 gpm (was indicated) due to changing Reactor Coolant System (RCS) level. Investigation of the event indicates that the reactor vessel head vent spool piece was removed at the time the RCS level started decreasing. A vacuum existed in the RCS at the time of removal of the spool piece which caused air to enter the reactor vessel head. The RCS level decrease was due to this. The charging system was placed in service at 80 gpm to regain the RCS level back to the original level. A walk down of all plant areas where leakage could have occurred has been completed with no leakage found. The charging system has been secured and RCS level is stable at this time.</br>The licensee notified the NRC Resident Inspector, the State of Minnesota, the State of Wisconsin, and local authorities in both states. The licensee will be issuing a press release.</br>* * * UPDATE FROM STEVE SCHMIDT TO VINCE KLCO AT 1523 EST ON 3/6/2012 * * * </br>NUE (Notification of Unusual Event) CU1.1, unidentified or pressure boundary leakage greater than 10 gpm that was entered at 0624 (CST) on 3/6/2012 at the Prairie Island Nuclear Plant has been terminated at 1136 on 3/6/2012. The entry criteria for CU 1.1 is no longer met as validated by a stable reactor coolant system level and no leakage found by plant walk downs.</br>The licensee will notify the NRC Resident Inspector.</br>Notified the R3DO (Ring), NRR-EO (Chernoff), IRD (Kozal) and the following federal agencies: DHS-SWO, FEMA, USDA, HHS, DOE, EPA, NuclearSSA and DHS-NICC.A, HHS, DOE, EPA, NuclearSSA and DHS-NICC. +
12:24:00, 6 March 2012 +
47,720 +
08:16:00, 6 March 2012 +
12:24:00, 6 March 2012 +
Unidentified or pressure boundary leakage … Unidentified or pressure boundary leakage greater than 10 gpm (was indicated) due to changing Reactor Coolant System (RCS) level. Investigation of the event indicates that the reactor vessel head vent spool piece was removed at the time the RCS level started decreasing. A vacuum existed in the RCS at the time of removal of the spool piece which caused air to enter the reactor vessel head. The RCS level decrease was due to this. The charging system was placed in service at 80 gpm to regain the RCS level back to the original level. A walk down of all plant areas where leakage could have occurred has been completed with no leakage found. The charging system has been secured and RCS level is stable at this time.</br>The licensee notified the NRC Resident Inspector, the State of Minnesota, the State of Wisconsin, and local authorities in both states. The licensee will be issuing a press release.</br>* * * UPDATE FROM STEVE SCHMIDT TO VINCE KLCO AT 1523 EST ON 3/6/2012 * * * </br>NUE (Notification of Unusual Event) CU1.1, unidentified or pressure boundary leakage greater than 10 gpm that was entered at 0624 (CST) on 3/6/2012 at the Prairie Island Nuclear Plant has been terminated at 1136 on 3/6/2012. The entry criteria for CU 1.1 is no longer met as validated by a stable reactor coolant system level and no leakage found by plant walk downs.</br>The licensee will notify the NRC Resident Inspector.</br>Notified the R3DO (Ring), NRR-EO (Chernoff), IRD (Kozal) and the following federal agencies: DHS-SWO, FEMA, USDA, HHS, DOE, EPA, NuclearSSA and DHS-NICC.A, HHS, DOE, EPA, NuclearSSA and DHS-NICC. +
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 6 March 2012 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:04:42, 2 March 2018 +
08:16:00, 6 March 2012 +
false +
false +
-0.172 d (-4.13 hours, -0.0246 weeks, -0.00566 months) +
12:24:00, 6 March 2012 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.