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Event Notification Report for May 12, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           05/11/2000 - 05/12/2000

                              ** EVENT NUMBERS **

36989  36990  36991  36992  

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|Power Reactor                                    |Event Number:   36989       |
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| FACILITY: PILGRIM                  REGION:  1  |NOTIFICATION DATE: 05/11/2000|
|    UNIT:  [1] [] []                 STATE:  MA |NOTIFICATION TIME: 09:29[EDT]|
|   RXTYPE: [1] GE-3                             |EVENT DATE:        05/11/2000|
+------------------------------------------------+EVENT TIME:        01:00[EDT]|
| NRC NOTIFIED BY:  G. FIEDLER                   |LAST UPDATE DATE:  05/11/2000|
|  HQ OPS OFFICER:  JOHN MacKINNON               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JOHN ROGGE           R1      |
|10 CFR SECTION:                                 |                             |
|AESS 50.72(b)(1)(v)      EMERGENCY SIREN INOP   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
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| AN APPARENT LIGHTNING STRIKE CAUSED THE LOSS OF ALL EMERGENCY SIRENS.        |
|                                                                              |
| An apparent lightning strike caused the loss of all Emergency Sirens.        |
| Emergency Sirens were discovered inoperable at 0815 ET.  Both repeaters for  |
| the Emergency Sirens were found inoperable.  Emergency Sirens were returned  |
| to service at 0840 ET when one of the repeaters was restored to service.     |
| The licensee will inform state and local officials of the loss of their      |
| Emergency Sirens.                                                            |
|                                                                              |
|                                                                              |
| The NRC Resident Inspector was notified of this event by the licensee.       |
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|Power Reactor                                    |Event Number:   36990       |
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| FACILITY: RIVER BEND               REGION:  4  |NOTIFICATION DATE: 05/11/2000|
|    UNIT:  [1] [] []                 STATE:  LA |NOTIFICATION TIME: 12:27[EDT]|
|   RXTYPE: [1] GE-6                             |EVENT DATE:        05/11/2000|
+------------------------------------------------+EVENT TIME:        08:18[CDT]|
| NRC NOTIFIED BY:  TURNER                       |LAST UPDATE DATE:  05/11/2000|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |CHARLES CAIN         R4      |
|10 CFR SECTION:                                 |                             |
|AESF 50.72(b)(2)(ii)     ESF ACTUATION          |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| THE PLANT HAD A REACTOR WATER CLEANUP ( RWCU) ISOLATION WHILE THEY WERE      |
| PLACING A DEMINERALIZER FILTER IN SERVICE.                                   |
|                                                                              |
| "While placing Reactor Water Cleanup Demin "B" in service following a        |
| precoat, received Division 2 isolation on sustained High Differential flow   |
| of 55 gpm for 45 seconds. The following valves received closed signals       |
| G33-F001, RWCU PUMPS INBD SUCTION VALVE, G33-F040, RWCU RETURN INBOARD ISOL. |
| VALVE, G33-F053, RWCU PUMPS INBD DISCH VALVE, G33-F02, RWCU INBD DRAIN VAL.  |
| The Systems responded as designed with all valves closed and the Reactor     |
| Water Cleanup Pumps tripped. Note: G33-F028 RWCU INBD DRAIN VAL was already  |
| closed.                                                                      |
|                                                                              |
| "The isolation appears to be valid. The cause of the isolation appears to be |
| that valves used to flush a strainer were not full closed, causing flow to   |
| the Backwash Receiving Tank where it was fully contained. The valves were    |
| locally visibly verified closed, but the valves were actually 1/2 open.      |
| Local position indications for both valves appeared to be defective. The     |
| plant is stable and plans for restoration of the RWCU system are in          |
| progress."                                                                   |
|                                                                              |
| The NRC Resident Inspector was notified.                                     |
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+------------------------------------------------------------------------------+
|General Information or Other                     |Event Number:   36991       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  WAYNE CTY ENG TESTING OFFICE         |NOTIFICATION DATE: 05/11/2000|
|LICENSEE:  WAYNE CTY ENG TESTING OFFICE         |NOTIFICATION TIME: 15:00[EDT]|
|    CITY:  DETROIT                  REGION:  3  |EVENT DATE:        05/11/2000|
|  COUNTY:                            STATE:  MI |EVENT TIME:        14:00[EDT]|
|LICENSE#:  21-13687-01           AGREEMENT:  N  |LAST UPDATE DATE:  05/11/2000|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |MELVYN LEACH         R3      |
|                                                |DON COOL             NMSS    |
+------------------------------------------------+BRENT CLAYTON        R3      |
| NRC NOTIFIED BY:  FAKHOURY                     |                             |
|  HQ OPS OFFICER:  CHAUNCEY GOULD               |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NDAM                     DAMAGED GAUGE/DEVICE   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| WAYNE COUNTY ENGINEERING REPORTED DAMAGE TO CPN DENSITY GAUGE.               |
|                                                                              |
| THE GAUGE WAS BEING USED IN DETROIT, MI. AT A ROAD MAINTENANCE SITE WHEN IT  |
| WAS RUN OVER BY A CAR.  THERE WAS NO MAJOR DAMAGE OR CRACKS TO THE           |
| DEVICE(CPN MODEL MC3-82 PORTABLE) WHICH CONTAINED 10 MILLICURIE OF CS-137    |
| AND 50 MILLICURIE OF AMERICIUM-241/BERYLLIUM.  NO LEAKAGE WAS DETECTED WHEN  |
| THEY MADE A SURVEY.  THE DEVICE, WHICH HAD A SLIGHT DENT AND BENT ROD  WAS   |
| PLACED BACK INTO ITS BOX AND WILL BE TAKEN TO THEIR FACILITY FOR STORAGE.    |
| THE MANUFACTURER WILL BE CONTACTED TOMORROW.  WAYNE COUNTY ENGINEERING       |
| CONTACTED NRC REGION 3  (SIMMONS).                                           |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36992       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: OYSTER CREEK             REGION:  1  |NOTIFICATION DATE: 05/11/2000|
|    UNIT:  [1] [] []                 STATE:  NJ |NOTIFICATION TIME: 16:41[EDT]|
|   RXTYPE: [1] GE-2                             |EVENT DATE:        05/11/2000|
+------------------------------------------------+EVENT TIME:        16:40[EDT]|
| NRC NOTIFIED BY:  DEMONCH                      |LAST UPDATE DATE:  05/11/2000|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JOHN ROGGE           R1      |
|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  |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| THE LICENSEE IDENTIFIED A DEGRADED FIRE BARRIER BETWEEN THE 4160 C AND D     |
| VAULTS.                                                                      |
|                                                                              |
| The licensee identified the wall protecting the C & D 4160 vaults/rooms from |
| each other as a 3 hour rated fire barrier.  It has been determined that the  |
| wall as is does not meet the requirement for a 3 hour rating.  Structural    |
| steel for the wall does not have the required thickness of "Pyrocrete 102"   |
| to provide a 3 hour rating.  The wall is considered functional given the low |
| fire loading in each room and the presence of automatic fire detection and   |
| manual suppression.  They have commenced an hourly watch for the effected    |
| area.                                                                        |
|                                                                              |
| The NRC Resident Inspector will be notified.                                 |
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