Event Notification Report for November 29, 2000
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
11/28/2000 - 11/29/2000
** EVENT NUMBERS **
37554 37555
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|Power Reactor |Event Number: 37554 |
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| FACILITY: PILGRIM REGION: 1 |NOTIFICATION DATE: 11/28/2000|
| UNIT: [1] [] [] STATE: MA |NOTIFICATION TIME: 16:50[EST]|
| RXTYPE: [1] GE-3 |EVENT DATE: 11/28/2000|
+------------------------------------------------+EVENT TIME: 15:13[EST]|
| NRC NOTIFIED BY: BOB COOLIDGE |LAST UPDATE DATE: 11/28/2000|
| HQ OPS OFFICER: STEVE SANDIN +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |ANIELLO DELLA GRECA R1 |
|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 |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 100 Power Operation |100 Power Operation |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
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| HIGH PRESSURE COOLANT INJECTION (HPCI) DECLARED INOPERABLE DUE TO |
| INSTRUMENTATION FAILURE |
| |
| "The HPCI System was taken out of service for surveillance testing earlier |
| in the day. The surveillance's were completed and HPCI was placed back in |
| service in standby lineup. At this time, the high flow isolation |
| instrumentation was found to be reading well beyond the limits of the normal |
| in service band (+10 to -10). At that time, HPCI was removed from service |
| (availability) and isolated. The proper LCO was entered and troubleshooting |
| is underway." |
| |
| The licensee informed the NRC resident inspector. |
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+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 37555 |
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| FACILITY: MCGUIRE REGION: 2 |NOTIFICATION DATE: 11/28/2000|
| UNIT: [1] [2] [] STATE: NC |NOTIFICATION TIME: 17:16[EST]|
| RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 11/28/2000|
+------------------------------------------------+EVENT TIME: 16:25[EST]|
| NRC NOTIFIED BY: JOHN SMALL |LAST UPDATE DATE: 11/28/2000|
| HQ OPS OFFICER: STEVE SANDIN +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |GEORGE BELISLE R2 |
|10 CFR SECTION: | |
|AOUT 50.72(b)(1)(ii)(B) OUTSIDE DESIGN BASIS | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 100 Power Operation |100 Power Operation |
|2 N Y 100 Power Operation |100 Power Operation |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
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| BOTH UNITS OUTSIDE OF DESIGN BASIS DUE TO MOMENTARY LOSS OF BOTH TRAINS OF |
| CONTROL ROOM VENTILATION |
| |
| "Presently, 'A' Control Room Ventilation out of service for maintenance. |
| 'B' Control Room Ventilation (VC/YC) inadvertently deenergized causing both |
| trains of VC/YC to be inoperable. 'B' VC/YC restarted with no further |
| complications. Deenergized from 1625 until 1643 which places both units one |
| and two outside design basis. With VC/YC inoperable for 'A' and 'B' trains, |
| entered [TS] 3.0.3 momentarily." |
| |
| The problem occurred when the technician performing maintenance on the "A" |
| train went to the operating "B" train. The "B" train Chiller was tripped in |
| error. The licensee informed the NRC resident inspector. |
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Page Last Reviewed/Updated Thursday, March 25, 2021