Event Notification Report for May 16, 2002
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
05/15/2002 - 05/16/2002
** EVENT NUMBERS **
38920 38921
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|General Information or Other |Event Number: 38920 |
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| REP ORG: SOLIDSTATE CONTROLS, INC |NOTIFICATION DATE: 05/15/2002|
|LICENSEE: SOLIDSTATE CONTROLS, INC |NOTIFICATION TIME: 15:07[EDT]|
| CITY: COLUMBUS REGION: 3 |EVENT DATE: 04/15/2002|
| COUNTY: STATE: OH |EVENT TIME: [EDT]|
|LICENSE#: AGREEMENT: Y |LAST UPDATE DATE: 05/15/2002|
| DOCKET: |+----------------------------+
| |PERSON ORGANIZATION |
| |RONALD GARDNER R3 |
| |DANIEL HOLODY R1 |
+------------------------------------------------+PAUL FREDRICKSON R2 |
| NRC NOTIFIED BY: W. G. HAMPTON (FAX) |GREG PICK R4 |
| HQ OPS OFFICER: MIKE NORRIS |VERN HODGE NRR |
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|EMERGENCY CLASS: NON EMERGENCY | |
|10 CFR SECTION: | |
|CCCC 21.21 UNSPECIFIED PARAGRAPH | |
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| | |
| | |
| | |
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EVENT TEXT
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| 10 CFR 21 NOTIFICATION-POTENTIAL DEFECT INVOLVING FAN ASSEMBLIES FOR UPS
|
| SYSTEMS |
| |
| "The attached 10 CFR Part 21 record, Attachment A, is submitted to report a |
| potential for a defect in fan assemblies used in Uninterruptible Power |
| Systems manufactured under the Solidstate Controls, Inc., 10CFR50 Appendix B |
| Program. |
| |
| "Nature of the defect: |
| |
| "PROBLEM SEEN: The above assembly contains a component part - an aluminum, |
| five-wing fan blade, which potentially could separate from the hub. If the |
| blade should come loose there may not be an alarm indication of loss of |
| cooling. Additionally, the loose blade may cause a short circuit if it falls |
| into the equipment and should land across opposing current carrying |
| devices. |
| |
| "CAUSE: We have determined that one fan blade style from one specific |
| manufacturer of part number 03-470100-00 could, under certain conditions, |
| separate from its hub. |
| |
| "EFFECT ON SYSTEM PERFORMANCE: Fan Assembly - THE SEPARATION OF THE
BLADE |
| FROM THE HUB COULD CAUSE THE SYSTEM TO DROP POWER TO THE LOAD. If the
worst |
| case failure mode described above were to occur, it would result in the |
| motor continuing to operate, thereby, not allowing the internal alarm |
| mechanism to activate. Further, the blade itself could fall into the |
| operating equipment causing a short circuit. It is important to note that |
| the short circuit situation has not been reported. |
| |
| "US NUCLEAR PLANT IMPACTED BY THIS ACTION: There are approximately 30 |
| plants listed" |
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|Power Reactor |Event Number: 38921 |
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| FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 05/15/2002|
| UNIT: [1] [] [] STATE: NJ |NOTIFICATION TIME: 15:30[EDT]|
| RXTYPE: [1] GE-2 |EVENT DATE: 05/13/2002|
+------------------------------------------------+EVENT TIME: 05:15[EDT]|
| NRC NOTIFIED BY: JERRY FREEMAN |LAST UPDATE DATE: 05/15/2002|
| HQ OPS OFFICER: RICH LAURA +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |DANIEL HOLODY R1 |
|10 CFR SECTION: |TIM MCGINTY IRO |
|NONR OTHER UNSPEC REQMNT | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 100 Power Operation |100 Power Operation |
| | |
| | |
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EVENT TEXT
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| LATE DECLARATION OF AN UNUSUAL EVENT FOR TORNADO |
| |
| The licensee reported that on May 13, 2002, the national weather service |
| issued a tornado warning for Central Ocean County, NJ. The Oyster Creek |
| Station was within the tornado warning area. At 15:30 on May 15, 2002, the |
| licensee determined that an Unusual Event should have been declared. No |
| tornados were sighted nor did the conditions affect safe station operation. |
| |
| The NRC Resident Inspector was notified. |
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