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During performance of the quarterly high p … During performance of the quarterly high pressure coolant injection (HPCI) Surveillance Test, a technical specification step could not be completed due to observed system water flow and discharge pressure oscillations. These oscillations are presently under investigation. The tech spec step involved establishing flow conditions at a certain discharge pressure. The problem is either with the test return system or the control system. A formal troubleshooting plan is being developed to determine the root cause and corrective action required to re-establish operability of the HPCI system. The system remains inoperable due to the problem found during testing. If the problem is found to be caused by the control system, then it could have potentially impacted the ability of the HPCI system to mitigate the consequences of an accident.</br>HPCI is currently in a 14 day Tech Spec 3.5.1.h LCO.</br>The licensee notified the NRC Resident Inspector. The licensee will be notifying the Minnesota Duty Officer.</br>* * * UPDATE FROM MARK KRUSE TO JASON KOZAL ON 4/22/08 AT 1631 * * *</br>Monticello is retracting the event reported based on further reviews of the event which found that the issue did not impact HPCI operability. A problem was identified with the test return valve CV-3503 which is not a safety-related component. The stations formal troubleshooting team has identified the cause for the degradation and corrective actions will be tracked in the station's corrective action program.</br>The licensee will notify the NRC Resident Inspector. Notified R3DO (Cameron).sident Inspector. Notified R3DO (Cameron). +
23:13:00, 10 March 2008 +
44,050 +
23:59:00, 10 March 2008 +
23:13:00, 10 March 2008 +
During performance of the quarterly high p … During performance of the quarterly high pressure coolant injection (HPCI) Surveillance Test, a technical specification step could not be completed due to observed system water flow and discharge pressure oscillations. These oscillations are presently under investigation. The tech spec step involved establishing flow conditions at a certain discharge pressure. The problem is either with the test return system or the control system. A formal troubleshooting plan is being developed to determine the root cause and corrective action required to re-establish operability of the HPCI system. The system remains inoperable due to the problem found during testing. If the problem is found to be caused by the control system, then it could have potentially impacted the ability of the HPCI system to mitigate the consequences of an accident.</br>HPCI is currently in a 14 day Tech Spec 3.5.1.h LCO.</br>The licensee notified the NRC Resident Inspector. The licensee will be notifying the Minnesota Duty Officer.</br>* * * UPDATE FROM MARK KRUSE TO JASON KOZAL ON 4/22/08 AT 1631 * * *</br>Monticello is retracting the event reported based on further reviews of the event which found that the issue did not impact HPCI operability. A problem was identified with the test return valve CV-3503 which is not a safety-related component. The stations formal troubleshooting team has identified the cause for the degradation and corrective actions will be tracked in the station's corrective action program.</br>The licensee will notify the NRC Resident Inspector. Notified R3DO (Cameron).sident Inspector. Notified R3DO (Cameron). +
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00:00:00, 22 April 2008 +
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>.
22:34:46, 24 September 2017 +
23:59:00, 10 March 2008 +
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23:13:00, 10 March 2008 +
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