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IRE-003-469 identified flaws (one circumfe … IRE-003-469 identified flaws (one circumferential and two axial indications) on 2-DR-2007 weld of hot leg drain line. Engineering has evaluated the flaws using the procedures of ASME Code Section XI, IWB-3600. Although the circumferential flaw was found to be acceptable in accordance with ASME section XI, IWB-3600, the calculated growth rates of the postulated axial flaws are large and do not meet the ASME Section XI Code requirements per NUREG 1022, Rev. 2 sect. 3.2.4 (degraded or unanalyzed condition). 'Any event or condition resulting in the condition of the nuclear power plant, including its principal safety barriers, being seriously degraded.' Currently a repair plan is being developed. </br>The licensee indicated that they will not be able to enter mode (4) until the repair is completed (using weld overlay as the repair method) and an inspection of the repair is conducted. </br>The licensee will perform a design engineering evaluation of extent of condition to determine the impact of this on the operating unit (Unit 1). </br>The NRC Resident Inspector will be notified.</br>See similar event #41448will be notified.
See similar event #41448 +
20:30:00, 26 February 2005 +
41,445 +
20:08:00, 26 February 2005 +
20:30:00, 26 February 2005 +
IRE-003-469 identified flaws (one circumfe … IRE-003-469 identified flaws (one circumferential and two axial indications) on 2-DR-2007 weld of hot leg drain line. Engineering has evaluated the flaws using the procedures of ASME Code Section XI, IWB-3600. Although the circumferential flaw was found to be acceptable in accordance with ASME section XI, IWB-3600, the calculated growth rates of the postulated axial flaws are large and do not meet the ASME Section XI Code requirements per NUREG 1022, Rev. 2 sect. 3.2.4 (degraded or unanalyzed condition). 'Any event or condition resulting in the condition of the nuclear power plant, including its principal safety barriers, being seriously degraded.' Currently a repair plan is being developed. </br>The licensee indicated that they will not be able to enter mode (4) until the repair is completed (using weld overlay as the repair method) and an inspection of the repair is conducted. </br>The licensee will perform a design engineering evaluation of extent of condition to determine the impact of this on the operating unit (Unit 1). </br>The NRC Resident Inspector will be notified.</br>See similar event #41448will be notified.
See similar event #41448 +
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00:00:00, 26 February 2005 +
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>.
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20:30:00, 26 February 2005 +
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