U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
07/06/2000 - 07/07/2000
** EVENT NUMBERS **
37148
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|Power Reactor |Event Number: 37148 |
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| FACILITY: DRESDEN REGION: 3 |NOTIFICATION DATE: 07/07/2000|
| UNIT: [] [2] [3] STATE: IL |NOTIFICATION TIME: 05:18[EDT]|
| RXTYPE: [1] GE-1,[2] GE-3,[3] GE-3 |EVENT DATE: 07/07/2000|
+------------------------------------------------+EVENT TIME: 02:05[CDT]|
| NRC NOTIFIED BY: DAVID THRONE |LAST UPDATE DATE: 07/07/2000|
| HQ OPS OFFICER: STEVE SANDIN +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |MICHAEL JORDAN R3 |
|10 CFR SECTION: | |
|AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|2 N Y 100 Power Operation |100 Power Operation |
|3 N Y 100 Power Operation |100 Power Operation |
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EVENT TEXT
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| MAIN CONTROL ROOM HVAC EMERGENCY VENTILATION DECLARED INOPERABLE |
| |
| "During performance of scheduled monthly surveillance testing, it was |
| determined that overall differential pressure on the Main Control Room HVAC |
| Emergency Ventilation Train Air Filtration Unit (AFU) was out of |
| specification high. The AFU is a single train system required to provide |
| habitable conditions for control room personnel during design basis accident |
| conditions. This condition is reportable under the requirements of SAF 1.17 |
| 'Could alone have prevented safety function.' and 10CFR50.72(b). This |
| condition places both Units in a 7 day shutdown LCO." |
| |
| The licensee will inform the NRC Resident Inspector. |
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