Browse wiki
Jump to navigation
Jump to search
On February 9, 2015, a violation of Unit 2 … On February 9, 2015, a violation of Unit 2 Technical Specification (TS) 3.6.1.3 was identified by the licensee. TS 3.6.1.3 requires primary containment isolation valves to be operable during Modes 1, 2, and 3. Contrary to this requirement, the A and C inboard main steam isolation valves (MSIVs) failed to close within the required isolation time during a technical specification surveillance test. Therefore, the A and C inboard MSIVs were inoperable when Unit 2 was in Modes 1, 2, and 3. The cause of the failure of the MSIVs to close within the required isolation time was excessive lubrication of the pistons and springs in the 2-way and 4-way valves within the pneumatic manifold assembly of the MSIV actuator. The excessive lubrication became tacky, causing a delay in the opening of the air supply and exhaust paths. Because the A and C outboard MSIVs closed within the required technical specification isolation time, the primary containment isolation safety function of the main steam lines was maintained. Therefore, this finding was determined to be of very low safety significance (Green). This condition was entered into the licensees corrective action program as CR 10036361. corrective action program as CR 10036361. +
23:59:59, 30 June 2015 +
23:59:59, 30 June 2015 +
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>.
05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 +, 05000366/FIN-2015002-02 + and 05000366/FIN-2015002-02 +
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>.
15:52:11, 30 May 2018 +
23:59:59, 30 June 2015 +