The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

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  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37554       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| 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                                   
+------------------------------------------------------------------------------+
| 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.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37555       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| 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                                   
+------------------------------------------------------------------------------+
| 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.                    |
+------------------------------------------------------------------------------+


Page Last Reviewed/Updated Thursday, March 25, 2021