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The following information was provided by … The following information was provided by the licensee via email:</br>At 1251 EDT on April 29, 2022, while troubleshooting the failure of the High Pressure Coolant Injection (HPCI) Exhaust Drain Pot High Level Alarm to clear, it was discovered that the High Pressure Coolant Injection exhaust line condensate drain system was not functioning as designed to support removal of condensate from the turbine exhaust. This resulted in some water accumulation in the turbine casing. Subsequently, the High Pressure Coolant Injection System was declared inoperable. As a result, this condition is being reported under 10 CFR 50.72(b)(3)(v)(D) as a condition that could have prevented fulfillment of the safety function at the time of discovery. </br>* * * RETRACTION ON 07/15/22 AT 1943 EDT FROM EVAN THOMPSON TO LLOYD DESOTELL * * *</br>A technical evaluation of this event was performed and concluded that the HPCI system would have been operable with this condition. If HPCI turbine actuated with the estimated amount of condensate accumulated in the casing and connecting piping, it would have performed its safety function; the HPCI Turbine Exhaust Rupture Disc would not have been challenged by calculated peak pressures; and calculated water hammer loads were within specified load capacities of the turbine flange, downstream piping, struts, snubber, and spring hanger. Based on this, the condition reported in EN 55871 is being retracted.</br>Notified R1DO (Bickett)s being retracted.
Notified R1DO (Bickett) +
16:51:00, 29 April 2022 +
55,871 +
20:44:00, 29 April 2022 +
16:51:00, 29 April 2022 +
The following information was provided by … The following information was provided by the licensee via email:</br>At 1251 EDT on April 29, 2022, while troubleshooting the failure of the High Pressure Coolant Injection (HPCI) Exhaust Drain Pot High Level Alarm to clear, it was discovered that the High Pressure Coolant Injection exhaust line condensate drain system was not functioning as designed to support removal of condensate from the turbine exhaust. This resulted in some water accumulation in the turbine casing. Subsequently, the High Pressure Coolant Injection System was declared inoperable. As a result, this condition is being reported under 10 CFR 50.72(b)(3)(v)(D) as a condition that could have prevented fulfillment of the safety function at the time of discovery. </br>* * * RETRACTION ON 07/15/22 AT 1943 EDT FROM EVAN THOMPSON TO LLOYD DESOTELL * * *</br>A technical evaluation of this event was performed and concluded that the HPCI system would have been operable with this condition. If HPCI turbine actuated with the estimated amount of condensate accumulated in the casing and connecting piping, it would have performed its safety function; the HPCI Turbine Exhaust Rupture Disc would not have been challenged by calculated peak pressures; and calculated water hammer loads were within specified load capacities of the turbine flange, downstream piping, struts, snubber, and spring hanger. Based on this, the condition reported in EN 55871 is being retracted.</br>Notified R1DO (Bickett)s being retracted.
Notified R1DO (Bickett) +
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100 +
00:00:00, 15 July 2022 +
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>.
11:30:06, 18 July 2022 +
20:44:00, 29 April 2022 +
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false +
0.162 d (3.88 hours, 0.0231 weeks, 0.00531 months) +
16:51:00, 29 April 2022 +
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