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With the plant in Mode 1 and 100% reactor … With the plant in Mode 1 and 100% reactor power at 2043 (EDT) on September 30, 2003, while shifting divisions of Control Center HVAC (CCHVAC), the Division 1 chiller failed to start and Division 1 CCHVAC was declared INOPERABLE. At 2050, a restart of Division 2 CCHVAC was attempted and the Division 2 chiller failed to start. Division 2 CCHVAC was declared INOPERABLE, and the plant entered LCO 3.0.3 as required by LCO 3.7.4 Condition D. Plant shutdown was initiated at 2146. Division 1 CCHVAC was declared OPERABLE at 2315, and LCO 3.0.3 was exited. Plant shutdown was terminated at 2315 with the reactor at 84% power. Division 2 CCHVAC remains INOPERABLE and under investigation, with plant operating under LCO 3.7.4 Condition A. Plans are to return to 100% reactor power. All ECCS systems remained OPERABLE during this event.</br>The NRC Resident Inspector has been notified. This report is being made pursuant to 10 CFR 50.72(b)(2)(i) and 10 CFR 50.72(b)(3)(v)(D).</br>* * * UPDATE 1428 EDT ON 10/20/03 FROM JEFF YEAGER TO S. SANDIN * * *</br>The licensee is retracting the notification required per 10 CFR 50.72(b)(3)(v) based on the following:</br>At 2050 hours on September 30,2003 with the plant operating at 100 percent reactor power air conditioning chillers for both divisions of the Control Center Air Conditioning System failed to start. Technical Specification (TS) LCO 3.0.3 was entered as directed by LCO 3.7.4, Control Center Air Conditioning System, Condition D.1 and a plant shutdown initiated at 2146 hours. Notification was made in accordance with 10 CFR 50.72(b)(2)(i), a Plant Shutdown Required by Technical Specifications. The chiller for Division 1 Control Center Air Conditioning System was started after approximately one hour and subsequently declared operable at 2315 hours. TS 3.0.3 was exited and power reduction was terminated at 84 percent reactor power.</br>Notification was also made in accordance with 10 CFR 50.72(b)(3)(v), Event or Condition that Could Have Prevented Fulfillment of a Safety Function. Investigation revealed an oil pressure permissive was not met for start of the chiller due to a small amount of air leaking into a pressure switch while shutdown. This delayed meeting the oil pressure permissive for starting the chiller. Subsequent start attempts removed the air, allowing the pressure permissive to be met and the chiller to be restarted. This restart of the chiller was accomplished from the main control room in accordance with plant procedures. Therefore, Division 1 Control Center Air Conditioning was capable of performing its intended function. This condition is therefore not reportable under 10 CFR 50.72(b)(3)(v). The original notification, Event Number 40210, is retracted.</br>The licensee informed the NRC Resident Inspector. Notified R3DO (Jim Creed).ent Inspector. Notified R3DO (Jim Creed).
00:50:00, 1 October 2003 +
00:43:00, 1 October 2003 +
00:50:00, 1 October 2003 +
With the plant in Mode 1 and 100% reactor … With the plant in Mode 1 and 100% reactor power at 2043 (EDT) on September 30, 2003, while shifting divisions of Control Center HVAC (CCHVAC), the Division 1 chiller failed to start and Division 1 CCHVAC was declared INOPERABLE. At 2050, a restart of Division 2 CCHVAC was attempted and the Division 2 chiller failed to start. Division 2 CCHVAC was declared INOPERABLE, and the plant entered LCO 3.0.3 as required by LCO 3.7.4 Condition D. Plant shutdown was initiated at 2146. Division 1 CCHVAC was declared OPERABLE at 2315, and LCO 3.0.3 was exited. Plant shutdown was terminated at 2315 with the reactor at 84% power. Division 2 CCHVAC remains INOPERABLE and under investigation, with plant operating under LCO 3.7.4 Condition A. Plans are to return to 100% reactor power. All ECCS systems remained OPERABLE during this event.</br>The NRC Resident Inspector has been notified. This report is being made pursuant to 10 CFR 50.72(b)(2)(i) and 10 CFR 50.72(b)(3)(v)(D).</br>* * * UPDATE 1428 EDT ON 10/20/03 FROM JEFF YEAGER TO S. SANDIN * * *</br>The licensee is retracting the notification required per 10 CFR 50.72(b)(3)(v) based on the following:</br>At 2050 hours on September 30,2003 with the plant operating at 100 percent reactor power air conditioning chillers for both divisions of the Control Center Air Conditioning System failed to start. Technical Specification (TS) LCO 3.0.3 was entered as directed by LCO 3.7.4, Control Center Air Conditioning System, Condition D.1 and a plant shutdown initiated at 2146 hours. Notification was made in accordance with 10 CFR 50.72(b)(2)(i), a Plant Shutdown Required by Technical Specifications. The chiller for Division 1 Control Center Air Conditioning System was started after approximately one hour and subsequently declared operable at 2315 hours. TS 3.0.3 was exited and power reduction was terminated at 84 percent reactor power.</br>Notification was also made in accordance with 10 CFR 50.72(b)(3)(v), Event or Condition that Could Have Prevented Fulfillment of a Safety Function. Investigation revealed an oil pressure permissive was not met for start of the chiller due to a small amount of air leaking into a pressure switch while shutdown. This delayed meeting the oil pressure permissive for starting the chiller. Subsequent start attempts removed the air, allowing the pressure permissive to be met and the chiller to be restarted. This restart of the chiller was accomplished from the main control room in accordance with plant procedures. Therefore, Division 1 Control Center Air Conditioning was capable of performing its intended function. This condition is therefore not reportable under 10 CFR 50.72(b)(3)(v). The original notification, Event Number 40210, is retracted.</br>The licensee informed the NRC Resident Inspector. Notified R3DO (Jim Creed).ent Inspector. Notified R3DO (Jim Creed).
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