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During containment spray pump inservice te … During containment spray pump inservice testing the minimum flow recirculation line recorded negative flow indicating reverse flow in the line. After the troubleshooting, it was determined that a degraded minimum flow check valve was allowing a path to the refueling water storage tank (RWST) for certain post loss of coolant accident (LOCA) conditions. The minimum flow isolation has been closed to eliminate the path. No actuation occurred during this time. </br>The NRC Resident Inspector, Connecticut Department of Energy and Environmental Protection (DEEP) Hartford, and Watertown Dispatch have been notified.</br>* * * UPDATE FROM TOM CLEARY TO STEVEN VITTO ON 06/16/15 AT 1349 EDT * * *</br>The purpose of this call is to correct the record for the 10 CFR 50.72(b)(3)(v)(C) event report provided on June 11, 2015. Event report number 51149 states: 'During containment spray pump inservice testing ...' The condition of the degraded containment spray flow check valve was identified: 'During high pressure safety injection pump inservice testing...'." </br>Notified R1DO (Bickett)</br>* * * UPDATE FROM WILLIAM McCOLLUM TO DANIEL MILLS AT 1724 EDT ON 7/10/15 * * *</br>The purpose of this call is to update the record for the 10 CFR 50.72(b)(3)(v)(C) event report provided on June 11, 2015. During subsequent investigation, it has been determined that a second release path may have existed through ECCS system relief valves under certain post LOCA conditions as a result of the degraded check valve described in the original report.</br>The licensee has informed the NRC Resident Inspector.</br>Notified R1DO (Cahill).esident Inspector.
Notified R1DO (Cahill). +
20:54:00, 11 June 2015 +
51,149 +
22:28:00, 11 June 2015 +
20:54:00, 11 June 2015 +
During containment spray pump inservice te … During containment spray pump inservice testing the minimum flow recirculation line recorded negative flow indicating reverse flow in the line. After the troubleshooting, it was determined that a degraded minimum flow check valve was allowing a path to the refueling water storage tank (RWST) for certain post loss of coolant accident (LOCA) conditions. The minimum flow isolation has been closed to eliminate the path. No actuation occurred during this time. </br>The NRC Resident Inspector, Connecticut Department of Energy and Environmental Protection (DEEP) Hartford, and Watertown Dispatch have been notified.</br>* * * UPDATE FROM TOM CLEARY TO STEVEN VITTO ON 06/16/15 AT 1349 EDT * * *</br>The purpose of this call is to correct the record for the 10 CFR 50.72(b)(3)(v)(C) event report provided on June 11, 2015. Event report number 51149 states: 'During containment spray pump inservice testing ...' The condition of the degraded containment spray flow check valve was identified: 'During high pressure safety injection pump inservice testing...'." </br>Notified R1DO (Bickett)</br>* * * UPDATE FROM WILLIAM McCOLLUM TO DANIEL MILLS AT 1724 EDT ON 7/10/15 * * *</br>The purpose of this call is to update the record for the 10 CFR 50.72(b)(3)(v)(C) event report provided on June 11, 2015. During subsequent investigation, it has been determined that a second release path may have existed through ECCS system relief valves under certain post LOCA conditions as a result of the degraded check valve described in the original report.</br>The licensee has informed the NRC Resident Inspector.</br>Notified R1DO (Cahill).esident Inspector.
Notified R1DO (Cahill). +
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100 +
00:00:00, 10 July 2015 +
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>.
22:17:30, 24 September 2017 +
22:28:00, 11 June 2015 +
Daniel Mills + and Steven Vitto +
true +
false +
0.0654 d (1.57 hours, 0.00935 weeks, 0.00215 months) +
20:54:00, 11 June 2015 +
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.