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Event Notification Report for August 25, 1999

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           08/24/1999 - 08/25/1999

                              ** EVENT NUMBERS **

36059  36060  36061  36062  36063  36064  36065  36066  36067  36068  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36059       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SAINT LUCIE              REGION:  2  |NOTIFICATION DATE: 08/23/1999|
|    UNIT:  [1] [] []                 STATE:  FL |NOTIFICATION TIME: 14:25[EDT]|
|   RXTYPE: [1] CE,[2] CE                        |EVENT DATE:        08/23/1999|
+------------------------------------------------+EVENT TIME:        12:36[EDT]|
| NRC NOTIFIED BY:  JIM HURCHALLA                |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  FANGIE JONES                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |KENNETH BARR         R2      |
|10 CFR SECTION:                                 |                             |
|ARPS 50.72(b)(2)(ii)     RPS ACTUATION          |                             |
|AESF 50.72(b)(2)(ii)     ESF ACTUATION          |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     M/R        Y       100      Power Operation  |0        Hot Standby      |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| MANUAL REACTOR TRIP DUE TO LOSS OF MAIN CONDENSER VACUUM                     |
|                                                                              |
| The reactor was manually tripped (all rods inserted) due to low main         |
| condenser vacuum at 1236 EDT.  The cause of the low vacuum is under          |
| investigation and is unknown at this time.  When the trip occurred the 'A'   |
| side non-essential 6.9 kV bus failed to transfer from the auxiliary (plant)  |
| power to startup (offsite) source resulting in the loss of two of four       |
| reactor coolant pumps.  The cause of the failure to transfer is also unknown |
| and under investigation.                                                     |
|                                                                              |
| The plant is stable in hot standby with forced circulation via the remaining |
| two reactor coolant pumps.  Feedwater is via the main feedwater system and   |
| steaming is via the steam bypass system.                                     |
|                                                                              |
| The licensee notified the NRC Resident Inspector.                            |
|                                                                              |
|                                                                              |
| *** UPDATE ON 8/24/99 @ 0915 BY HALL TO GOULD ***                            |
|                                                                              |
| THIS UPDATE IS TO INCLUDE THE ACTUATION OF THE AFAS-2 (AUX FEEDWATER         |
| ACTUATION SYSTEM) FOR 4 MINS TO THE #2 STEAM GENERATOR.  THIS RESPONSE IS    |
| EXPECTED AND NORMAL.                                                         |
|                                                                              |
| THE RESIDENT INSPECTOR WAS NOTIFIED.                                         |
|                                                                              |
| THE REG 2 RDO(BARR) WAS NOTIFIED.                                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36060       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: MILLSTONE                REGION:  1  |NOTIFICATION DATE: 08/24/1999|
|    UNIT:  [1] [2] [3]               STATE:  CT |NOTIFICATION TIME: 06:52[EDT]|
|   RXTYPE: [1] GE-3,[2] CE,[3] W-4-LP           |EVENT DATE:        08/24/1999|
+------------------------------------------------+EVENT TIME:        06:30[EDT]|
| NRC NOTIFIED BY:  ACKERMAN                     |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |KATHLEEN MODES       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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Refueling        |0        Refueling        |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|3     N          Y       100      Power Operation  |100      Power Operation  |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| OFF SITE NOTIFICATION DUE TO FIRE OUTSIDE OF THE PROTECTED AREA.             |
|                                                                              |
| A FIRE WAS REPORTED AT THE COMPRESSOR OIL SEPARATOR IN THE SWITCHYARD        |
| OUTSIDE THE PROTECTED AREA.  THE FIRE WAS EXTINGUISHED WITHIN 10 MINS WITH   |
| ASSISTANCE FROM OFF SITE FIRE DEPARTMENT.  THE FIRE CONSISTED MOSTLY OF      |
| SMOKE AND SOME FLAMES, BUT THERE WAS NO APPARENT DAMAGE TO THE COMPRESSOR OR |
| SWITCHYARD.  THE STATE DEPARTMENT OF ENVIRONMENTAL PROTECTION AND THE COUNTY |
| WERE NOTIFIED.                                                               |
|                                                                              |
| THE RESIDENT INSPECTOR WILL BE NOTIFIED.                                     |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36061       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SUSQUEHANNA              REGION:  1  |NOTIFICATION DATE: 08/24/1999|
|    UNIT:  [1] [2] []                STATE:  PA |NOTIFICATION TIME: 09:15[EDT]|
|   RXTYPE: [1] GE-4,[2] GE-4                    |EVENT DATE:        08/24/1999|
+------------------------------------------------+EVENT TIME:        08:45[EDT]|
| NRC NOTIFIED BY:  GRANT FERNSLER               |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  WILLIAM POERTNER             +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |KATHLEEN MODES       R1      |
|10 CFR SECTION:                                 |                             |
|AARC 50.72(b)(1)(v)      OTHER ASMT/COMM 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  |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| UNAVAILABILITY OF NOTIFICATION SYSTEMS FOR PAGER ACTIVATION                  |
|                                                                              |
| On 8/24/99 the station was conducting an Emergency Plan Drill.  During the   |
| activities one of the participants learned that the telenotification system  |
| (including its backup) which is used to page individuals in the event of an  |
| actual emergency had failed.  In accordance with 10CFR50.72(b)(1)(v) this    |
| constitutes a Loss of Emergency Response Capability .                        |
|                                                                              |
| The telenotification system is now operable.  The licensee determined that a |
| power source was disconnected.                                               |
|                                                                              |
| The NRC resident inspector has been notified.                                |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|General Information or Other                     |Event Number:   36062       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  T.A. HOUSTON & ASSOCIATES            |NOTIFICATION DATE: 08/24/1999|
|LICENSEE:  T.A. HOUSTON & ASSOCIATES            |NOTIFICATION TIME: 11:49[EDT]|
|    CITY:  CULPEPER                 REGION:  2  |EVENT DATE:        08/06/1999|
|  COUNTY:                            STATE:  VA |EVENT TIME:        16:00[EDT]|
|LICENSE#:  45-025073-01          AGREEMENT:  N  |LAST UPDATE DATE:  08/24/1999|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |SCOTT SPARKS         R2      |
|                                                |JOHN HICKEY          NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  T.A. HOUSTON                 |                             |
|  HQ OPS OFFICER:  CHAUNCEY GOULD               |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NINF                     INFORMATION ONLY       |                             |
|BAB1 20.2201(a)(1)(i)    LOST/STOLEN LNM>1000X  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| TROXLER MOISTURE DENSITY GAUGE LOST DURING SHIPMENT                          |
|                                                                              |
| A TROXLER MOISTURE DENSITY GAUGE MODEL 3411B SERIAL #15637 CONTAINING 8      |
| MILLICURIES OF CESIUM-137 AND 40 MILLICURIES OF AMERICIUM WHICH WAS SHIPPED  |
| FROM T.A. HOUSTON & ASSOCIATES IN CULPEPER VA TO THE TROXLER COMPANY IN      |
| RESEARCH TRIANGLE PARK, NC ON 8/6/99 HAS NOT REACHED ITS DESTINATION AS OF   |
| 8/13/99.  FEDERAL EXPRESS, THE CARRIER, AND TROXLER BOTH HAVE BEEN           |
| CONTACTED.  THE TRACKING NUMBER IS 813439593699.  THE GAUGE WAS BEING        |
| SHIPPED TO TROXLER FOR CALIBRATION AND ROUTINE MAINTENANCE.                  |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36063       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: HADDAM NECK              REGION:  1  |NOTIFICATION DATE: 08/24/1999|
|    UNIT:  [1] [] []                 STATE:  CT |NOTIFICATION TIME: 12:18[EDT]|
|   RXTYPE: [1] W-4-LP                           |EVENT DATE:        08/24/1999|
+------------------------------------------------+EVENT TIME:        11:10[EDT]|
| NRC NOTIFIED BY:  BRIAN CAMPBELL               |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  FANGIE JONES                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |KATHLEEN MODES       R1      |
|10 CFR SECTION:                                 |                             |
|HFIT 26.73               FITNESS FOR DUTY       |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Decommissioned   |0        Decommissioned   |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| FITNESS FOR DUTY REPORT                                                      |
|                                                                              |
| A contractor was determined to be under the influence of alcohol and it was  |
| confirmed by positive test results.  The contractor's access authorization   |
| to the plant has been terminated.  Refer to the HOO log for additional       |
| details.                                                                     |
|                                                                              |
| The licensee informed the NRC Resident Inspector and the Department of       |
| Environmental Protection for Connecticut .                                   |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Fuel Cycle Facility                              |Event Number:   36064       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT   |NOTIFICATION DATE: 08/24/1999|
|   RXTYPE: URANIUM ENRICHMENT FACILITY          |NOTIFICATION TIME: 12:54[EDT]|
| COMMENTS: 2 DEMOCRACY CENTER                   |EVENT DATE:        08/23/1999|
|           6903 ROCKLEDGE DRIVE                 |EVENT TIME:        17:18[EDT]|
|           BETHESDA, MD 20817    (301)564-3200  |LAST UPDATE DATE:  08/24/1999|
|    CITY:  PIKETON                  REGION:  3  +-----------------------------+
|  COUNTY:  PIKE                      STATE:  OH |PERSON          ORGANIZATION |
|LICENSE#:  GDP-2                 AGREEMENT:  N  |MELVYN LEACH         R3      |
|  DOCKET:  0707002                              |JOHN HICKEY          NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  RON CRABTREE                 |                             |
|  HQ OPS OFFICER:  FANGIE JONES                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|OCBA 76.120(c)(2)(i)     ACCID MT EQUIP FAILS   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| CRITICALITY ACCIDENT ALARM SYSTEM SLAVE UNITS MAY NOT MEET REQUIRED          |
| STANDARD                                                                     |
|                                                                              |
| "At 1718 HOURS ON 8/23/99 THE PLANT SHIFT SUPERINTENDENT WAS NOTIFIED THAT   |
| THE CRITICALITY ACCIDENT ALARM SYSTEM (CAAS) SLAVE UNITS MAY NOT MEET ANSI   |
| 8.3, SECTION 5.5 STANDARD.  ANSI 8.3 IDENTIFIES THAT THE CAAS SYSTEM SHALL   |
| AUTOMATICALLY INITIATE AN EVACUATION ALARM SIGNAL WITHIN ONE HALF SECOND OF  |
| THE ALARM SETPOINT BEING EXCEEDED.  ENGINEERING COULD NOT PROVIDE ASSURANCE  |
| THAT THE CAAS SLAVE UNITS WOULD MEET THIS REQUIREMENT.  FACILITIES WITH CAAS |
| CLUSTERS (DETECTORS) AND THEIR EVACUATION HORNS ARE COMPLIANT WITH ANSI 8.3. |
| SECTION 55 REQUIREMENT.                                                      |
|                                                                              |
| "THE SAFETY SIGNIFICANCE IS MINIMAL SINCE THE SLAVES WILL STILL PROVIDE      |
| ALARM INDICATION                                                             |
| BEFORE SIMILAR INDICATIONS WOULD BE PROVIDED UNDER THE TSR LCO ACTIONS       |
| IMPLEMENTED."                                                                |
|                                                                              |
| FOR INFORMATION:  THE ALARMS DISCUSSED HERE ARE REMOTE ALARMS IN AREAS       |
| WITHIN SO MANY FEET OF THE AREA OF CONCERN, BUT OUTSIDE THE BUILDING OR      |
| ROOM.                                                                        |
|                                                                              |
| PLANT PERSONNEL HAVE INFORMED THE NRC RESIDENT INSPECTOR AND THE ONSITE DOE  |
| REPRESENTATIVE.                                                              |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36065       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: DIABLO CANYON            REGION:  4  |NOTIFICATION DATE: 08/24/1999|
|    UNIT:  [1] [2] []                STATE:  CA |NOTIFICATION TIME: 15:28[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        08/24/1999|
+------------------------------------------------+EVENT TIME:        10:32[PDT]|
| NRC NOTIFIED BY:  JOHN RAAB                    |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  FANGIE JONES                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |PHIL HARRELL         R4      |
|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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          Y       100      Power Operation  |100      Power Operation  |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| OFFSITE NOTIFICATION OF THE CAPTURE AND SUBSEQUENT RELEASE OF A GREEN SEA    |
| TURTLE                                                                       |
|                                                                              |
| The licensee notified the National Marine Fisheries Service of the capture   |
| and subsequent planned release of a green sea turtle, which is protected     |
| under the Endangered Species Act.                                            |
|                                                                              |
| The licensee plans to notify the NRC Resident Inspector.                     |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36066       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SOUTH TEXAS              REGION:  4  |NOTIFICATION DATE: 08/24/1999|
|    UNIT:  [] [2] []                 STATE:  TX |NOTIFICATION TIME: 17:53[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        08/24/1999|
+------------------------------------------------+EVENT TIME:        14:38[CDT]|
| NRC NOTIFIED BY:  WILLIAM VALAGURA             |LAST UPDATE DATE:  08/24/1999|
|  HQ OPS OFFICER:  FANGIE JONES                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:                                |PHIL HARRELL         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       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| ENGINEERED SAFETY FEATURES ACTUATION DUE TO AN ELECTRICAL FAULT              |
|                                                                              |
| "At 1438 Hrs, August 24, 1999, the Unit 2 Standby Transformer locked out due |
| to an electrical fault on one of the lighting arrestors installed on the     |
| transformer. Due to the loss of power to the Unit 2 Standby Transformer, the |
| Train C Standby Diesel Generator started and loaded all Mode II (LOOP)       |
| Engineered Safety Features equipment as required. The Train 'B' Standby      |
| Diesel Generator was in service for monthly surveillance testing at the time |
| of the event, so the Train 'B' Engineered Safety Features equipment never    |
| lost power.                                                                  |
|                                                                              |
| "The electrical voltage perturbation also resulted in a Reactor Coolant      |
| System letdown isolation. Letdown has subsequently been returned to service  |
| for Reactor Coolant System inventory control. Also, two radiation monitors   |
| used to monitor plant radiological effluents were affected by the voltage    |
| perturbation. The Condenser Air Removal System Radiation Monitor RT-8027     |
| momentarily lost communications with the Radiation Monitoring System         |
| Computer. The condition has cleared and the monitor has been returned to     |
| service. The Unit Vent Radiation Monitor RT-8010A lost communication with    |
| the Radiation Monitoring System Computer during the perturbation as well.    |
| This monitor remains out of service (the Wide Range Unit Vent Accident       |
| Radiation Monitor RT-8010B remained in service through out the event).       |
|                                                                              |
| "Unit 2 is currently stable at 100% power. Preparations are being made to    |
| reenergize the deenergized Unit 2 Standby Buses from the Unit 1 Standby      |
| Transformer.                                                                 |
|                                                                              |
| "In addition to the start of the Train 'C' Standby Diesel Generator, the     |
| Train 'C' Centrifugal Charging Pump and the Train 'C' Auxiliary Feedwater    |
| Pump also started as required. The automatic actuation of these Engineered   |
| Safety Features components is reportable per 10 CFR 50.72(b)(2))."           |
|                                                                              |
| The licensee notified the NRC Resident Inspector.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Other Nuclear Material                           |Event Number:   36067       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  EASTERN ISOTOPES                     |NOTIFICATION DATE: 08/24/1999|
|LICENSEE:  EASTERN ISOTOPES                     |NOTIFICATION TIME: 19:08[EDT]|
|    CITY:  STERLING                 REGION:  2  |EVENT DATE:        08/24/1999|
|  COUNTY:                            STATE:  VA |EVENT TIME:        09:00[EDT]|
|LICENSE#:  45-25221-01           AGREEMENT:  N  |LAST UPDATE DATE:  08/24/1999|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |SCOTT SPARKS         R2      |
|                                                |JOE HOLONICH         NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  ALAN JONES                   |                             |
|  HQ OPS OFFICER:  FANGIE JONES                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|BAE1 20.2202(b)(1)       PERS OVEREXPOSURE      |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| POSSIBLE OVEREXPOSURE TO EMPLOYEES' EXTREMITIES                              |
|                                                                              |
| Eastern Isotopes received their June 1999 exposure report from their vendor, |
| Proxtronics (Burke, VA), which indicated one individual received 50 rem to   |
| the extremities as indicated by finger rings.  The report also indicated     |
| that two other individuals received higher than expected doses to their      |
| extremities, 25 rem and 36 rem.  Initial investigation indicated that the    |
| highest dosage occurred to an individual who had the least number of duties  |
| involving possible exposure.  The individuals involved have been removed     |
| from duties involving further exposures while further investigations are     |
| carried out.  The vendor has been contacted and suspects their standards and |
| controls, which they are investigating.  A preliminary report from the       |
| vendor is expected tomorrow.                                                 |
|                                                                              |
| Eastern Isotopes handles Technetium and F18 (FDG).                           |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36068       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: VERMONT YANKEE           REGION:  1  |NOTIFICATION DATE: 08/25/1999|
|    UNIT:  [1] [] []                 STATE:  VT |NOTIFICATION TIME: 04:29[EDT]|
|   RXTYPE: [1] GE-4                             |EVENT DATE:        08/25/1999|
+------------------------------------------------+EVENT TIME:        01:48[EDT]|
| NRC NOTIFIED BY:  DENNIS MAY                   |LAST UPDATE DATE:  08/25/1999|
|  HQ OPS OFFICER:  LEIGH TROCINE                +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |KATHLEEN MODES       R1      |
|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                                   
+------------------------------------------------------------------------------+
| UNEXPECTED HIGH PRESSURE COOLANT INJECTION SYSTEM SUCTION SWAPOVER DURING    |
| ROUTINE EMERGENCY DIESEL GENERATOR TESTING                                   |
|                                                                              |
| While using the "Diesel Generator Undervoltage Test Auto Start Switch" to    |
| start the 'B' emergency diesel generator as part of a routine surveillance   |
| test, an unexpected high pressure coolant injection system suction swapover  |
| occurred, and three valves actuated to swap the suction from the condensate  |
| storage tank (normal) to the torus.  Apparently, a low spike was received on |
| both the DC1 system and condensate storage tank level when the "Diesel       |
| Generator Undervoltage Test Auto Start Switch" was operated.  After the      |
| condensate storage tank and torus levels were verified to be normal, the     |
| licensee swapped the high pressure coolant injection suction back to its     |
| normal lineup.  The licensee is currently investigating the cause of this    |
| transient.                                                                   |
|                                                                              |
| The 'B' emergency diesel generator started as expected.                      |
|                                                                              |
| The licensee plans to notify the NRC resident inspector and the State of     |
| Vermont.                                                                     |
+------------------------------------------------------------------------------+