Event Notification Report for April 26, 2002
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
04/25/2002 - 04/26/2002
** EVENT NUMBERS **
38876 38877
+----------------------------------------------------------------------
--------+
|Power Reactor |Event Number: 38876
|
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: CLINTON REGION: 3 |NOTIFICATION DATE:04/25/2002 |
| UNIT: [1] [] [] STATE: IL |NOTIFICATION TIME:12:23[EDT] |
| RXTYPE: [1] GE-6 |EVENT DATE: 04/25/2002 |
+------------------------------------------------+EVENT TIME: 05:13[CDT] |
| NRC NOTIFIED BY: WILLIAM MAYES |LAST UPDATE DATE: 04/25/2002 |
| HQ OPS OFFICER: RICH LAURA +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |JOHN JACOBSON R3 |
|10 CFR SECTION: | |
|AESF 50.72(b)(3)(iv)(A) VALID SPECIF SYS ACTUAT| |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N N 0 Refueling |0 Refueling |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| START OF DIVISION III DIESEL DUE TO GRID VOLTAGE DIP |
| |
| "On 4/25/02 at 0513 while lining up to backfeed through the main power |
| transformers in preparation for a |
| Reserve Auxiliary Transformer outage, a low grid voltage condition occurred, |
| resulting in the auto start of |
| the Division 3 Diesel Generator. |
| |
| "The Procedure to backfeed power from the switchyard to the plant electrical |
| buses was in progress. This |
| procedure was being used to support removing one of the offsite power |
| sources supplied through the |
| Reserve Auxiliary Transformer (RAT) which was being removed from service for |
| maintenance. When the |
| disconnect was closed in the switchyard completing the backfeed, the Static |
| Var Compensators (SVC) for |
| the two offsite powers sources, the RAT SVC and the Emergency Reserve |
| Auxiliary Transformer (ERAT) |
| SVC tripped. The offsite power sources supplying the RAT and ERAT remained |
| energized |
| |
| "The SVCs maintain voltage from the RAT and ERAT to the plant within a |
| constant voltage band. Without |
| the SVCs, low grid voltage may result in low 4160kv bus voltage. At the time |
| this occurred the Division 1 |
| and 2 buses were being supplied from the RAT, which has three 345kv sources, |
| and the Division 3 bus was |
| being supplied from a separate 138kv source. It was the 138 kv source that |
| experienced the degraded |
| voltage that resulted in thc Division 3 ERAT supply breaker opening (offsite |
| power source) and the |
| Division 3 Diesel Generator starting and closing in on the Division 3 bus. |
| |
| "Following the grid voltage transient, grid voltage returned to the |
| pretransient level. The RAT and ERAT |
| SVCs were restored to service and both offsite power sources were made |
| operable. No damage to plant |
| equipment was observed during the initial investigation. The Division 3 |
| Diesel Generator was paralleled to |
| the ERAT offsite power source and loaded. The diesel generator has been |
| divorced from the ERAT and the |
| Division 3 bus is being carried by the ERAT in the normal lineup." |
| |
| The NRC Resident Inspector was notified. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Hospital |Event Number: 38877 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG: GRIFFIN HOSPITAL |NOTIFICATION DATE:04/25/2002|
|LICENSEE: GRIFFIN HOSPITAL |NOTIFICATION TIME:16:05[EDT]|
| CITY: BRIDGEPORT REGION: 1 |EVENT DATE: 04/25/2002|
| COUNTY: STATE: CT |EVENT TIME: [EDT]|
|LICENSE#: AGREEMENT: N |LAST UPDATE DATE: 04/25/2002|
| DOCKET: |+---------------------------+
| |PERSON ORGANIZATION |
| |CLIFFORD ANDERSON R1 |
| |DOUG BROADDUS NMSS |
+------------------------------------------------+ |
| NRC NOTIFIED BY: STUART KORZHIN | |
| HQ OPS OFFICER: RICH LAURA | |
+------------------------------------------------+ |
|EMERGENCY CLASS: NON EMERGENCY | |
|10 CFR SECTION: | |
|NINF INFORMATION ONLY | |
| | |
| | |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| TRASH BURNING FACILITY RADIATION MONITORS ALARM ON WASTE SHIPMENT
FROM |
| GRIFFIN HOSPITAL |
| |
| The Bridgeport RESCO trash burning facility notified the GriffinHospital |
| that a waste shipment from the hospital set off the radiation monitors. A |
| consultant from the hospital was dispatched to the trash facility to |
| identify the cause of the alarm. The consultant reviewed the wasterecords |
| from the hospital and preliminarily determined that a radioactive diaper was |
| most probably the source of the radioactivity. |
| |
| ***UPDATE S. KORZHIN to R. LAURA on 4/25/02 at 1830*** |
| |
| Investigation found approximately 5 or 6 diapers with patient waste that had |
| a maximum surface reading of 10 millirem per hour. The radioactive isotope |
| involved was iodine-131. The diapers will be transported back to the |
| hospital where they will be stored for radioactive decay. Also assisting |
| the hospital contractor was the Connecticut Department of Environmental |
| Protection. |
| |
| Notified R1DO (C. Anderson) |
+------------------------------------------------------------------------------+
Page Last Reviewed/Updated Thursday, March 25, 2021
Page Last Reviewed/Updated Thursday, March 25, 2021