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Braidwood Unit 2 was performing a planned … Braidwood Unit 2 was performing a planned plant shutdown for refueling outage A2R18. In accordance with plant shutdown procedures while in Mode 1 (Power Operations) at approximately 15% power, operators attempted to start the Start Up Feedwater (SFWP) pump and the pump immediately tripped on Phase A Overcurrent. The 2A Motor Driven Feedwater pump (MDFWP) was manually started to maintain Steam Generator Water Level during the shutdown and subsequent plant cooldown. While in Mode 3 (Hot Standby) at (550 Degree-F), the 2A MDFWP was manually secured due to pump inboard journal bearing temperature exceeding its (200 Degree-F) operating limit. At 0105 (CDT) an anticipated automatic Auxiliary Feedwater actuation signal was generated on low Steam Generator level (36.3%) and both the 2A and 2B Auxiliary Feedwater pumps (AFP) auto-started. Also at 0105 (CDT) a Reactor Protection System (RPS) Reactor trip signal was received due to low Steam Generator level (36.3%) with the reactor not critical. Both Auxiliary Feedwater trains operated as designed with the Main Steam Dumps in service and the Main Condenser providing the heat sink.</br>All systems operated as designed with the exception of the SFWP and the MDFWP described above.</br>The plant is currently stable in Mode 5 with both AFPs secured.</br>This report is being made per 10 CFR 50.72(b)(3)(iv)(A) for automatic actuation of the (1) RPS Reactor Trip with the reactor not critical and (6) Auxiliary Feedwater System, 8 hour notification.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
06:05:00, 5 October 2015 +
51,450 +
08:41:00, 5 October 2015 +
06:05:00, 5 October 2015 +
Braidwood Unit 2 was performing a planned … Braidwood Unit 2 was performing a planned plant shutdown for refueling outage A2R18. In accordance with plant shutdown procedures while in Mode 1 (Power Operations) at approximately 15% power, operators attempted to start the Start Up Feedwater (SFWP) pump and the pump immediately tripped on Phase A Overcurrent. The 2A Motor Driven Feedwater pump (MDFWP) was manually started to maintain Steam Generator Water Level during the shutdown and subsequent plant cooldown. While in Mode 3 (Hot Standby) at (550 Degree-F), the 2A MDFWP was manually secured due to pump inboard journal bearing temperature exceeding its (200 Degree-F) operating limit. At 0105 (CDT) an anticipated automatic Auxiliary Feedwater actuation signal was generated on low Steam Generator level (36.3%) and both the 2A and 2B Auxiliary Feedwater pumps (AFP) auto-started. Also at 0105 (CDT) a Reactor Protection System (RPS) Reactor trip signal was received due to low Steam Generator level (36.3%) with the reactor not critical. Both Auxiliary Feedwater trains operated as designed with the Main Steam Dumps in service and the Main Condenser providing the heat sink.</br>All systems operated as designed with the exception of the SFWP and the MDFWP described above.</br>The plant is currently stable in Mode 5 with both AFPs secured.</br>This report is being made per 10 CFR 50.72(b)(3)(iv)(A) for automatic actuation of the (1) RPS Reactor Trip with the reactor not critical and (6) Auxiliary Feedwater System, 8 hour notification.</br>The licensee notified the NRC Resident Inspector.ensee notified the NRC Resident Inspector. +
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00:00:00, 5 October 2015 +
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>.
22:17:13, 24 September 2017 +
08:41:00, 5 October 2015 +
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0.108 d (2.6 hours, 0.0155 weeks, 0.00356 months) +
06:05:00, 5 October 2015 +
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