Event Notification Report for May 16, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           05/15/2000 - 05/16/2000

                              ** EVENT NUMBERS **

37001  37002  37003  37004  37005  37006  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37001       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: DIABLO CANYON            REGION:  4  |NOTIFICATION DATE: 05/15/2000|
|    UNIT:  [1] [] []                 STATE:  CA |NOTIFICATION TIME: 04:04[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        05/15/2000|
+------------------------------------------------+EVENT TIME:        00:43[PDT]|
| NRC NOTIFIED BY:  STEVE HACKLEMAN              |LAST UPDATE DATE:  05/15/2000|
|  HQ OPS OFFICER:  DICK JOLLIFFE                +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          UNU                   |CHARLES CAIN         R4      |
|10 CFR SECTION:                                 |JOSE CALVO           NRR     |
|AAEC 50.72 (a) (1) (I)   EMERGENCY DECLARED     |JOSEPH GIITTER       IRO     |
|ARPS 50.72(b)(2)(ii)     RPS ACTUATION          |EACHES               FEMA    |
|AESF 50.72(b)(2)(ii)     ESF ACTUATION          |JOSEPH HIMES         RCT     |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     A/R        Y       100      Power Operation  |0        Hot Standby      |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| UNUSUAL EVENT DUE TO AUXILIARY TRANSFORMER EXPLOSION & FIRE; LOSS OF OFFSITE |
| POWER -                                                                      |
|                                                                              |
| At 0043 PDT on 05/15/00, the licensee declared an Unusual Event due to       |
| auxiliary transformer #1-1 exploding and catching on fire.  This resulted in |
| the loss of offsite power and an automatic trip of Unit 1.  The licensee     |
| called the offsite fire department and they responded to the plant.          |
| Auxiliary transformer #1-1 is located outside the turbine building (north    |
| end).                                                                        |
|                                                                              |
| Three of three Unit 1 emergency diesel generators started and loaded and are |
| supplying emergency power to vital Unit 1 buses.  Auxiliary transformer #1-1 |
| supplies backup power to Unit 1 emergency buses.  The Unit 1 12 KV buses are |
| energized.  Unit 1 reactor coolant pumps are running providing forced        |
| circulation.                                                                 |
|                                                                              |
| Unit 1 automatically tripped from 100% power.  All control rods inserted     |
| completely.  Steam is being dumped to the atmosphere.  Unit 1 has no steam   |
| generator tube leaks and no fuel leaks.  The auxiliary feedwater system      |
| automatically started, as expected.  A #1-2 steam generator code safety      |
| valve failed open for about 25 - 30 minutes about 30 minutes after the       |
| reactor trip.  The valve is now closed.  There was no safety injection       |
| actuation.                                                                   |
|                                                                              |
| Unit 1 is stable in Mode 3 (Hot Standby).                                    |
|                                                                              |
| This event had no effect on Unit 2 which is stable at 100% power.            |
|                                                                              |
| The licensee notified state and local officials and the NRC Resident         |
| Inspector.                                                                   |
|                                                                              |
| At 0143 PDT, the fire is out.  No personnel were injured.                    |
|                                                                              |
| At 0405 CDT, NRC Region 4 entered the Monitoring Phase of Normal NRC         |
| Response Mode.                                                               |
|                                                                              |
| * * * UPDATE AT 0726 ON 05/15/00 FROM MARK LEMKE TO JOLLIFFE * * *           |
|                                                                              |
| The licensee determined that an electrical fault on the low voltage side of  |
| auxiliary transformer #1-1 caused extensive damage to the 12 KV buswork and  |
| nearby buswork used to supply the Unit 1 4 KV buses from offsite power       |
| following a plant shutdown.  Auxiliary transformer #1-1 did not explode and  |
| is intact.                                                                   |
|                                                                              |
| The licensee also determined that there was not a failure of a main steam    |
| code safety valve.  However, following closure of the main steam isolation   |
| valves, a code safety valve on the #1-2 steam generator did lift and did not |
| fully reseat.  Plant operators took manual action to lower steam generator   |
| pressure, causing the valve to reseat.  There was no release of radiation    |
| from the plant.                                                              |
|                                                                              |
| The California Department of Forestry responded to the site.                 |
|                                                                              |
| The licensee is continuing to investigate the cause of this explosion and    |
| has issued a press release.                                                  |
|                                                                              |
| * * * AT 0900 ON 05/15/00 COMMISSIONERS' ASSISTANTS BRIEFING * * *           |
|                                                                              |
| IRO (Frank Congel, Joe Giitter); NRR Projects (Steve Dembek); OPA (Bill      |
| Beecher); OSP (Cardelia Maupin); IP (Howard Faulkner); CA (Tom Combs);       |
| Chairman Meserve Asst (Mike Tschiltz); Comm Dicus Asst (Joe Olencz); Comm    |
| McGaffigan Asst (Jeff Sharkey); Comm Diaz Asst (Tony Hsia); Comm Merrifield  |
| Asst (John Thoma); NRR (Ed Goodwin); R4 (Elmo Collins [Briefer], Bill Jones, |
| et al).                                                                      |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37002       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: WNP-2                    REGION:  4  |NOTIFICATION DATE: 05/15/2000|
|    UNIT:  [2] [] []                 STATE:  WA |NOTIFICATION TIME: 11:47[EDT]|
|   RXTYPE: [2] GE-5                             |EVENT DATE:        05/15/2000|
+------------------------------------------------+EVENT TIME:        04:48[PDT]|
| NRC NOTIFIED BY:  J.W. GASTON                  |LAST UPDATE DATE:  05/15/2000|
|  HQ OPS OFFICER:  JOHN MacKINNON               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |BILL JONES           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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|2     N          Y       62       Power Operation  |62       Power Operation  |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| OUTBOARD MAIN STEAM ISOLATION (MSIV) VALVE FOUND CLOSED.                     |
|                                                                              |
| At 0448 PDT on 05/15/00, the outboard main steam isolation valve #MSIV-V-28A |
| was found in the closed position (green indicating light on).  Followup      |
| verification of the 'A' main steam line flow (0%) and the plant computer     |
| valve position verified that the valve was closed.  The plant computer       |
| indicated that the valve closed at 0254 PDT and it was discovered closed at  |
| 0448 PDT.  No work was being performed on the main steam system or in the    |
| area of the main steam system when the valve closed.  The plant computer     |
| indicated that the valve had fast closed.  The plant entered the Limiting    |
| Condition of Operation for Primary Containment Isolation Valve and placed    |
| the control switch for the MSIV in the closed position.  There was no valid  |
| ESF Actuation signal that caused the valve closure.  The plant was operating |
| at 62% power and did not experience a transient as a result of the MSIV      |
| closure (no flux tilt).  Licensee investigation into the cause of the        |
| closure is continuing.                                                       |
|                                                                              |
| The NRC Resident Inspector was notified of this event by the licensee.       |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Other Nuclear Material                           |Event Number:   37003       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  MALLINCKRODT, INC.                   |NOTIFICATION DATE: 05/15/2000|
|LICENSEE:  MALLINCKRODT, INC.                   |NOTIFICATION TIME: 13:12[EDT]|
|    CITY:  MARYLAND HEIGHTS         REGION:  3  |EVENT DATE:        04/23/2000|
|  COUNTY:  ST. LOUIS                 STATE:  MO |EVENT TIME:             [CDT]|
|LICENSE#:  240420601             AGREEMENT:  N  |LAST UPDATE DATE:  05/15/2000|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |JOHN MADERA          R3      |
|                                                |JOSIE PICCCONE       NMSS    |
+------------------------------------------------+DAVID LEW            R1      |
| NRC NOTIFIED BY:  JIM SCHUH                    |                             |
|  HQ OPS OFFICER:  FANGIE JONES                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|BAB2 20.2201(a)(1)(ii)   LOST/STOLEN LNM>10X    |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| LOST DEPLETED URANIUM SHIELD WITH USED TECHNETIUM-99 GENERATOR               |
|                                                                              |
| On April 23, 2000, a depleted uranium (DU) shield was declared lost in       |
| accordance with Mallinckrodt, Inc. (Ml)  site procedures for tracking and    |
| accountability of this material.                                             |
|                                                                              |
| This shield was shipped as part of a Mo-99/Tc-99m Generator from the         |
| Maryland Heights facility on March 12, 1999.  It was shipped to a            |
| Mallinckrodt, Inc pharmacy in North Attleboro, MA.  The pharmacy received    |
| the generator and it was offered for return shipment to our site on March    |
| 31, 1999.  At the time it was offered for shipment, the safe also contained  |
| a generator column with approximately 440 mCi of Mo-99.  The generator was   |
| shipped via Del Med, Inc.  The generator went to a Del Med warehouse in      |
| South Plainfield, NJ and was stored until April 8, 1999.  Del Med records    |
| indicate the package was then shipped to the Maryland Heights facility via   |
| Associated Courier.  Associated Courier has indicated the generator was      |
| returned to the Maryland heights facility.                                   |
|                                                                              |
| Return generator packages are not tracked by the couriers with an individual |
| package number.  The packages are generally collected on a pallet in the     |
| courier's warehouse and transported to Maryland Heights when a pallet is     |
| full.  They generally arrive at Maryland Heights with a single bill of       |
| Lading.  We do not become aware of a particular generators serial number     |
| until the package is inspected, opened, and the generator bar code is        |
| scanned into our system.  We have no record of this generator being scanned  |
| back into our system.  This indicates to us that it never arrived on our     |
| site.  We have no record of this DU shield returning to the Maryland Heights |
| facility.  If the safe was reused without check-in, it would have shown up   |
| on subsequent scanning when shipped from our facility or upon arrival after  |
| it's subsequent use.  Mallinckrodt believes the package was not delivered to |
| the Maryland Heights facility and was lost in the transportation cycle.  The |
| location of this safe is unknown to Mallinckrodt and the carriers involved   |
| in it's transportation.                                                      |
|                                                                              |
| Our site procedures allow a one year time frame for a depleted uranium       |
| shield to be returned to our site after the expected return date.  This      |
| allows time for customers to utilize the generator and make necessary        |
| transportation arrangements, couriers to search their warehouses, and time   |
| for the shields to cycle through Mallinckrodt's systems.  This package had   |
| an expected return date of April 23, 1999.  The one year time frame for this |
| missing safe expired on April 23, 2000.                                      |
|                                                                              |
| As part of our investigation, we contacted the original pharmacy and the two |
| couriers who handled this package.  The pharmacy has provided a copy of a    |
| bill of lading indicating they offered the DU safe for shipment.  The        |
| couriers have indicated they have conducted a search of their warehouses and |
| do not have the DU safe in their possession.                                 |
|                                                                              |
| The safe itself contains approximately 8000 �Ci of U-238 metal encapsulated  |
| in stainless steel.  The safe is stamped with the legend                     |
| "Caution-Radioactive Shielding-Uranium" in accordance with 10CFR40.13(c)(6). |
| The dose rate on contact with the DU safe is approximately 3 to 4 mrad/hr.   |
| As a result of the construction of the safe, and the low dose rates          |
| exhibited by this material, no significant exposures would be expected to    |
| members of the public.                                                       |
|                                                                              |
| MI has been in contact with NRC Region 3 (James Cameron).                    |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37004       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: INDIAN POINT             REGION:  1  |NOTIFICATION DATE: 05/15/2000|
|    UNIT:  [] [3] []                 STATE:  NY |NOTIFICATION TIME: 14:25[EDT]|
|   RXTYPE: [2] W-4-LP,[3] W-4-LP                |EVENT DATE:        05/15/2000|
+------------------------------------------------+EVENT TIME:        12:16[EDT]|
| NRC NOTIFIED BY:  DeClemente                   |LAST UPDATE DATE:  05/15/2000|
|  HQ OPS OFFICER:  JOHN MacKINNON               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |DAVID LEW            R1      |
|10 CFR SECTION:                                 |                             |
|APRE 50.72(b)(2)(vi)     OFFSITE NOTIFICATION   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|3     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| OFFSITE NOTIFICATION TO LOCAL AND STATE AUTHORITIES DUE TO LEAKING FUEL OIL  |
| TANK                                                                         |
|                                                                              |
| "This report is being made for an event for which a notification to another  |
| government agency (i.e., NYSDEC/WCDOH) has been made.  On May 15, 2000 at    |
| 1216 hours, a notification was made to the Westchester County Department Of  |
| Health (WCDOH) and subsequently a notification to the New York State         |
| Department of Conservation (NYSDEC), Spill Report Number 00-01912, for a     |
| failed leak tightness test on the sewage treatment plant underground fuel    |
| oil storage tank.  A vacuum leak test was performed by a NYS qualified       |
| vendor on the underground storage tank.  A vacuum could not be maintained    |
| and air in-leakage could be heard indicating a leak in the tank.  Fuel oil   |
| is being removed from the tank and excavation initiated to perform visual    |
| inspections."                                                                |
|                                                                              |
| The licensee notified the NRC Resident Inspector.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   37005       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: BYRON                    REGION:  3  |NOTIFICATION DATE: 05/15/2000|
|    UNIT:  [1] [2] []                STATE:  IL |NOTIFICATION TIME: 16:30[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        05/15/2000|
+------------------------------------------------+EVENT TIME:        06:53[CDT]|
| NRC NOTIFIED BY:  SCOT SWANSON                 |LAST UPDATE DATE:  05/15/2000|
|  HQ OPS OFFICER:  FANGIE JONES                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JOHN MADERA          R3      |
|10 CFR SECTION:                                 |DAVID LEW            R1      |
|APRE 50.72(b)(2)(vi)     OFFSITE NOTIFICATION   |JOSEPH GIITTER       IRO     |
|                                                |SUE GAGNER           PAO     |
|                                                |DON COOL             NMSS    |
|                                                |BOB YOUNG            DOE     |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| TRAFFIC ACCIDENT INVOLVING TRUCK TRANSPORTING EQUIPMENT FROM BYRON STATION   |
|                                                                              |
| "At 0753 EDT on 05/15/00, a traffic accident occurred involving a            |
| semi-tractor trailer and a car in the state of Pennsylvania (State Route     |
| 4005, New Galilee Road, Darlington Township).  The truck was carrying a      |
| spent fuel rack shipped from Byron Station as Radiological Material LSA      |
| n.o.s 7 UN 2912 Fissile Excepted (ComEd, Byron, Illinois) that was to be     |
| recycled by vendor "Alaron" in Wampum, Pennsylvania.  The container for the  |
| rack was not damaged.  There was no affect to the surrounding area due to    |
| the shipment.  The vehicle accident caused traffic to be suspended on Route  |
| 4005.  A nearby school utilized a different building for classes.  The       |
| Pennsylvania State Police responded to the scene and managed the vehicle     |
| traffic.  A Safety Officer from Alaron responded to the site to confirm      |
| there was no radiological issues. The Pennsylvania State Police issued a     |
| traffic report discussing hazardous materials involved in a traffic          |
| accident.  This press release requires notification of NRC in accordance     |
| with 10 CFR 50.72(b)(2)(vi)"                                                 |
|                                                                              |
| The licensee notified the NRC Resident Inspector.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Fuel Cycle Facility                              |Event Number:   37006       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT   |NOTIFICATION DATE: 05/15/2000|
|   RXTYPE: URANIUM ENRICHMENT FACILITY          |NOTIFICATION TIME: 18:50[EDT]|
| COMMENTS: 2 DEMOCRACY CENTER                   |EVENT DATE:        05/15/2000|
|           6903 ROCKLEDGE DRIVE                 |EVENT TIME:        15:30[EDT]|
|           BETHESDA, MD 20817    (301)564-3200  |LAST UPDATE DATE:  05/15/2000|
|    CITY:  PIKETON                  REGION:  3  +-----------------------------+
|  COUNTY:  PIKE                      STATE:  OH |PERSON          ORGANIZATION |
|LICENSE#:  GDP-2                 AGREEMENT:  N  |JOHN MADERA          R3      |
|  DOCKET:  0707002                              |THOMAS ESSIG         NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  JOE HALCOMB                  |                             |
|  HQ OPS OFFICER:  FANGIE JONES                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NCFR                     NON CFR REPORT REQMNT  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| REPORTABLE QUANTITY FOR OIL DISCHARGE EXCEEDED                               |
|                                                                              |
| "On 05/15/00 at 1530, it was determined that the Reportable Quantity (RQ)    |
| value for oil (i.e, greater than 25 gallons) was exceeded.  Operations       |
| personnel reported that a lubrication oil spill had occurred on the roof of  |
| the X-330 Process Building and after an investigation was initiated by       |
| Environmental Compliance personnel, it was determined that the total         |
| quantity of the spill was approximately 500 gallons.  The cause of the spill |
| is still under investigation.                                                |
|                                                                              |
| "The spill resulted in a release of oil to the environment exceeding the RQ  |
| in accordance with Ohio Administrative Code Rule 3750-25-20 thereby          |
| initiating the release reporting requirements contained therein.  Oil was    |
| discharged via the storm sewer system to the X-230J-7 East Holding Pond and  |
| the southernmost branch of the West Drainage Ditch.                          |
|                                                                              |
| "At the time of this report, the oil is contained on-site and no off-site    |
| consequences have occurred.  The spill is currently being cleaned up by      |
| Chemical Operations personnel using oil diversion equipment and absorbent    |
| material."                                                                   |
|                                                                              |
| The licensee notified the NRC Resident Inspector as well as local and state  |
| authorities.                                                                 |
+------------------------------------------------------------------------------+


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