Event Notification Report for April 6, 2001

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           04/05/2001 - 04/06/2001

                              ** EVENT NUMBERS **

37892  37893  37894  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37892       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: BYRON                    REGION:  3  |NOTIFICATION DATE: 04/05/2001|
|    UNIT:  [] [2] []                 STATE:  IL |NOTIFICATION TIME: 12:30[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        04/05/2001|
+------------------------------------------------+EVENT TIME:        10:38[CDT]|
| NRC NOTIFIED BY:  SWANSON                      |LAST UPDATE DATE:  04/05/2001|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |MICHAEL JORDAN       R3      |
|10 CFR SECTION:                                 |                             |
|DDDD 73.71               UNSPECIFIED PARAGRAPH  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|2     N          Y       88       Power Operation  |88       Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| Unescorted access granted inappropriately.  Immediate compensatory measures  |
| taken upon discovery.                                                        |
| Contact HOO for additional details.                                          |
|                                                                              |
| The NRC Resident Inspector will be notified.                                 |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Other Nuclear Material                           |Event Number:   37893       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  YALE UNIVERSITY                      |NOTIFICATION DATE: 04/05/2001|
|LICENSEE:  YALE UNIVERSITY                      |NOTIFICATION TIME: 16:54[EDT]|
|    CITY:  NEW HAVEN                REGION:  1  |EVENT DATE:        04/05/2001|
|  COUNTY:                            STATE:  CT |EVENT TIME:             [EDT]|
|LICENSE#:                        AGREEMENT:  N  |LAST UPDATE DATE:  04/05/2001|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |JACK MCFADDEN        R1      |
|                                                |LARRY CAMPER         NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  TAMMY STEMENS                |                             |
|  HQ OPS OFFICER:  BOB STRANSKY                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NINF                     INFORMATION ONLY       |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| MISSING PO-210 SOURCE                                                        |
|                                                                              |
| A 50 �Ci Po-210 source has been discovered missing. The source was leased    |
| from a vendor under a general license. The caller stated that the source had |
| been used in a science fair project, and then inadvertently discarded into   |
| the trash. The university is currently attempting to determine whether the   |
| trash from this residence was taken to a sanitary landfill or an             |
| incinerator.                                                                 |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37894       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: DIABLO CANYON            REGION:  4  |NOTIFICATION DATE: 04/05/2001|
|    UNIT:  [1] [2] []                STATE:  CA |NOTIFICATION TIME: 18:41[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        04/05/2001|
+------------------------------------------------+EVENT TIME:        15:26[PDT]|
| NRC NOTIFIED BY:  JOYCE SKAGGS                 |LAST UPDATE DATE:  04/05/2001|
|  HQ OPS OFFICER:  BOB STRANSKY                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          UNU                   |LINDA SMITH          R4      |
|10 CFR SECTION:                                 |CHRISTOPHER GRIMES   NRR     |
|*AEC 50.72(a) (1) (i)    EMERGENCY DECLARED     |RICHARD WESSMAN      IRO     |
|                                                |ELLIS MERSCHOFF      R4      |
|                                                |WILLIAM BORCHARDT    NRR     |
|                                                |DAVID BARDON         FEMA    |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| UNUSUAL EVENT DECLARED DUE TO UNCONTROLLED BRUSH FIRE THREATENING OFFSITE    |
| POWER SUPPLIES                                                               |
|                                                                              |
| The licensee declared an Unusual Event at 1526 PDT due to an uncontrolled    |
| brush fire near the site. The licensee was performing a controlled burn of   |
| grasses near the site when the fire went out of control. Heavy smoke from    |
| the fire caused a fault on the incoming 230kV  power line, resulting in a    |
| loss of startup electrical power to both units. All six EDGs automatically   |
| started, but did not load. The licensee has notified local government        |
| agencies, and has requested assistance from the California Department of     |
| Forestry. The NRC resident inspector is currently onsite.                    |
|                                                                              |
| * * * UPDATE 1913 EDT 4/5/01 FROM SKAGGS TAKEN BY STRANSKY * * *             |
|                                                                              |
| The licensee reported that the fire has been extinguished. Startup power has |
| been restored to the startup transformers, with restoration of  power to     |
| individual buses still underway.                                             |
|                                                                              |
| * * * UPDATE 2005 EDT 4/5/01 FROM SKAGGS TAKEN BY STRANSKY * * *             |
|                                                                              |
| The Unusual Event was terminated at 1700 PDT. Startup power has been         |
| restored to all individual buses. Notified R4(Brockman), NRR (Grimes), FEMA  |
| (DePuy).                                                                     |
|                                                                              |
| * * * COMMISSIONERS ASSISTANTS' BRIEFING  2030 EDT 4/5/01 * * *              |
|                                                                              |
| Briefer: W. Jones. Participants: Brockman, Merschoff, Smith, et. al. (R4),   |
| Wessman (IRO), Grimes (NRR), Camper (NMSS), Beecher (OPA), Lohaus (STP),     |
| Hauber (OIP), Morris (EDO), Paperiello (DEDMRS), Tschiltz, Levin (Comm.      |
| Meserve), Hiltz (Comm. Dicus), Beall (Comm. McGaffigan) Davis (Comm. Diaz),  |
| Thoma, Stauss (Comm. Merrifield).                                            |
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