Browse wiki
Jump to navigation
Jump to search
The following issue of very low safety sig … The following issue of very low safety significance (Green) was identified by the licensee and was a violation of NRC requirements. This issue met the criteria of Section VI of the NRC Enforcement Policy, NUREG-1600, for being dispositioned as a non-cited violation. Improved Technical Specification (ITS) 3.7.1 states that MSSVs shall be operable as specified in ITS Table 3.7.1-1 in Modes 1, 2 and 3. Contrary to the above, on September 22, 2009, while performing SP-650, ASME Code Safety Valves Test, on the A OTSG in Mode 1, the as-found set points of three MSSVs were found outside the ITS 3.7.1 acceptance criteria of +/- 3 percent of the nominal set point. The valves were returned to operable status by adjusting their set point to within +/- 1 percent. The licensee concluded that the three MSSVs were inoperable for a period longer than allowed by plant ITS. The licensee determined that this ITS violation was a result of a failure, in past years when MSSVs were found out of tolerance, to provide adequate instructions to the vendor refurbishing the valves to determine the root causes of the out of tolerance condition. This lack of adequate vendor instructions was the result of the licensees failure to follow Corrective Action Program procedures which require that physical evidence and important information that is essential to identifying cause(s) be preserved. The finding was evaluated using Phase 1 of the At-Power SDP, and was determined to be of very low safety significance (Green) because the inspectors responded no to all questions in the mitigating systems cornerstone column of Table 4a, Manual Chapter 0609, Attachment 0609.04. This issue was documented in the licensees corrective action program as NCR 356521es corrective action program as NCR 356521 +
23:59:59, 31 March 2010 +
23:59:59, 31 March 2010 +
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>.
05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 +, 05000302/FIN-2010002-02 + and 05000302/FIN-2010002-02 +
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>.
15:39:30, 30 May 2018 +
23:59:59, 31 March 2010 +