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Alert

Due to a lapse in appropriations, the NRC has ceased normal operations. However, excepted and exempted activities necessary to maintain critical health and safety functions—as well as essential progress on designated critical activities, including those specified in Executive Order 14300—will continue, consistent with the OMB-Approved NRC Lapse Plan.

Event Notification Report for March 30, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           03/29/2000 - 03/30/2000

                              ** EVENT NUMBERS **

36843  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36843       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SUSQUEHANNA              REGION:  1  |NOTIFICATION DATE: 03/29/2000|
|    UNIT:  [1] [] []                 STATE:  PA |NOTIFICATION TIME: 02:38[EST]|
|   RXTYPE: [1] GE-4,[2] GE-4                    |EVENT DATE:        03/29/2000|
+------------------------------------------------+EVENT TIME:        02:00[EST]|
| NRC NOTIFIED BY:  GRANT FERNSLER               |LAST UPDATE DATE:  03/29/2000|
|  HQ OPS OFFICER:  BOB STRANSKY                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |MICHELE EVANS        R1      |
|10 CFR SECTION:                                 |                             |
|ADAS 50.72(b)(2)(i)      DEG/UNANALYZED COND    |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Refueling        |0        Refueling        |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| EXCESSIVE LEAKAGE THROUGH CONTROL ROD DRIVE CHECK VALVES                     |
|                                                                              |
| "During the Unit 1 Refuel and Inspection Outage, it has been determined that |
| the CRD check valves (CRD Seismic Island) exceeded the as-found minimum path |
| leakage limit of 508 ml/hr. This failure is a degraded condition found while |
| the plant is shutdown, and requires a 4 hour ENS notification under          |
| 10CFR50.72(b)(2)(i)."                                                        |
|                                                                              |
| The NRC resident inspector will be informed of this event by the licensee.   |
+------------------------------------------------------------------------------+


Page Last Reviewed/Updated Thursday, March 25, 2021

Page Last Reviewed/Updated Thursday, March 25, 2021