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At approximately 01:46 (CDT) on August 28, … At approximately 01:46 (CDT) on August 28, 2004, the Duane Arnold Energy Center plant process computer (PPC) failed due to a lost power supply. This computer system provides the control room with its Safety Parameter Display System (SPDS), the Emergency Response Data System (ERDS) and MIDAS. With the loss of the PPC, and specifically the subsequent loss of SPDS, ERDS, and MIDAS representing a major loss of emergency assessment capability, the reportability criteria of 10CFR50.72(b)(3)(xiii) was met. No other control room indications, or communication systems were affected by this computer outage. They expect to have a new power supply at the site by noon today and installed within two hours after arrival.</br>The NRC Resident Inspector will be notified.</br>* * * UPDATE PROVIDED BY DICK FOWLER TO JEFF ROTTON AT 1302 ON 08/28/04 * * *</br>The Duane Arnold Energy Center plant process computer (PPC) power supply has been replaced and operation of the PPC has been restored.</br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
06:46:00, 28 August 2004 +
40,995 +
07:38:00, 28 August 2004 +
06:46:00, 28 August 2004 +
At approximately 01:46 (CDT) on August 28, … At approximately 01:46 (CDT) on August 28, 2004, the Duane Arnold Energy Center plant process computer (PPC) failed due to a lost power supply. This computer system provides the control room with its Safety Parameter Display System (SPDS), the Emergency Response Data System (ERDS) and MIDAS. With the loss of the PPC, and specifically the subsequent loss of SPDS, ERDS, and MIDAS representing a major loss of emergency assessment capability, the reportability criteria of 10CFR50.72(b)(3)(xiii) was met. No other control room indications, or communication systems were affected by this computer outage. They expect to have a new power supply at the site by noon today and installed within two hours after arrival.</br>The NRC Resident Inspector will be notified.</br>* * * UPDATE PROVIDED BY DICK FOWLER TO JEFF ROTTON AT 1302 ON 08/28/04 * * *</br>The Duane Arnold Energy Center plant process computer (PPC) power supply has been replaced and operation of the PPC has been restored.</br>The licensee has notified the NRC Resident Inspector.e has notified the NRC Resident Inspector. +
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06:46:00, 28 August 2004 +
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