United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated With Events > Event Notification Reports > 2002

Event Notification Report for July 5, 2002

                         
                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           07/04/2002 - 07/05/2002

                              ** EVENT NUMBERS **

39033  39041  
.
+------------------------------------------------------------------------------+
|General Information or Other                     |Event Number:   39033       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  MARYLAND DEPT OF THE ENVIRONMENT     |NOTIFICATION DATE:
07/01/2002|
|LICENSEE:  NEUTRON PRODUCTS                     |NOTIFICATION TIME: 08:16[EDT]|
|    CITY:  ROCKVILLE                REGION:  1  |EVENT DATE:        06/27/2002|
|  COUNTY:  MONTGOMERY                STATE:  MD |EVENT TIME:        08:00[EDT]|
|LICENSE#:  MD 3102501            AGREEMENT:  Y  |LAST UPDATE DATE:  07/01/2002|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |MICHAEL MODES        R1      |
|                                                |FRED BROWN           NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  ALAN JACOBSON                |                             |
|  HQ OPS OFFICER:  JOHN MacKINNON               |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          NON EMERGENCY         |                             |
|10 CFR SECTION:                                 |                             |
|NAGR                     AGREEMENT STATE        |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| RADIATION ALARM AT A WASTE TRANSFER STATION WAS ACTIVATED BY A TUCK         
|
| CONTAINING REFUSE.                                                           |
|                                                                              |
|                                                                              |
| A truck containing a roll off refuse container set off the radiation monitor |
| at the Montgomery County Waste Transfer Station located in Rockville, MD at  |
| 0800 hours on 06/27/02.  The  refuse container was searched and a bag        |
| containing paper towels and rags found to be contaminated with cobalt-60     |
| with a radiation reading of 0.5 mr/hr.  The load was rejected and sent back  |
| to Neutron Products Incorporated, Dickerson, MD.  The load was evaluated and |
| the radioactive material was removed and placed into storage with            |
| radioactive waste.   Neutron Products was cited by the State of Maryland for |
| improper disposal of radioactive waste and inadequate surveying and          |
| monitoring.                                                                  |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   39041       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: CLINTON                  REGION:  3  |NOTIFICATION DATE: 07/04/2002|
|    UNIT:  [1] [] []                 STATE:  IL |NOTIFICATION TIME: 05:57[EDT]|
|   RXTYPE: [1] GE-6                             |EVENT DATE:        07/04/2002|
+------------------------------------------------+EVENT TIME:        01:33[CDT]|
| NRC NOTIFIED BY:  MERRIKEN                     |LAST UPDATE DATE:  07/04/2002|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          NON EMERGENCY         |PATRICK HILAND       R3      |
|10 CFR SECTION:                                 |                             |
|ARPS 50.72(b)(2)(iv)(B)  RPS ACTUATION - CRITICA|                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE  
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     A/R        Y       95       Power Operation  |0        Hot Shutdown     |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| REACTOR SCRAM FROM 94.6% POWER DUE TO TURBINE TRIP CAUSED BY
GENERATOR TRIP  |
| AND LOCKOUT                                                                  |
|                                                                              |
| On July 4, 2002, at 0133, Clinton Power Station scrammed from 94.6% due to a |
| Turbine Trip from a Generator Trip and Lockout.  The initiating event for    |
| the scram is not presently known at this time but it is believed to be a     |
| problem with the Main Power Transformer (MPT) B.   The Sudden Pressure MPT B |
| alarm came simultaneously with the reactor scram.  The Sudden Pressure MPT B |
| alarm is brought in by the Sudden Pressure Fault Relay, which initiates a    |
| Main Generator trip and lockout, which trips the Main Turbine and initiates  |
| a reactor scram.                                                             |
|                                                                              |
| The MPT B deluge system initiated, however, there was no  physical evidence  |
| of any damage to MPT B.  After conducting a visual inspection of MPT B, the  |
| deluge system was secured.  A clearance is being applied to MPT B for        |
| investigation.                                                               |
|                                                                              |
| The plant is presently in Mode 3, maintaining reactor pressure within a      |
| pressure band of 550 to 650 psig and level between Level 3 and Level 8,      |
| which is the normal level band.                                              |
|                                                                              |
| The plant responded normally on the scram.  All rods fully inserted, no ECCS |
| injection occurred and no relief valves lifted.                              |
|                                                                              |
| The NRC Resident Inspector and the State were notified.                      |
|                                                                              |
|                                                                              |
| -                                                                            |
+------------------------------------------------------------------------------+
.