The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

Event Notification Report for March 3, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           03/02/2000 - 03/03/2000

                              ** EVENT NUMBERS **

36736  36741  36748  36749  

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36736       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: CLINTON                  REGION:  3  |NOTIFICATION DATE: 02/28/2000|
|    UNIT:  [1] [] []                 STATE:  IL |NOTIFICATION TIME: 18:24[EST]|
|   RXTYPE: [1] GE-6                             |EVENT DATE:        02/28/2000|
+------------------------------------------------+EVENT TIME:        14:15[CST]|
| NRC NOTIFIED BY:  MIKE BENSEN                  |LAST UPDATE DATE:  03/02/2000|
|  HQ OPS OFFICER:  DOUG WEAVER                  +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |MIKE JORDAN          R3      |
|10 CFR SECTION:                                 |                             |
|AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION    |                             |
|NLCO                     TECH SPEC LCO A/S      |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| HIGH PRESSURE CORE SPRAY INOPERABLE                                          |
|                                                                              |
| High Pressure Core Spray was declared INOPERABLE following an overvoltage    |
| condition on the Division Three AC Power Distribution System.                |
|                                                                              |
| During performance of CPS 9080.02 Division Three Diesel Generator            |
| Operability Surveillance, the Division Three Diesel Generator was            |
| synchronized with the AC bus.  Following synchronization, bus voltage went   |
| to                                                                           |
| approximately 4360V, which is above the limit of 4300V.  The high voltage    |
| condition remained for approximately                                         |
| 3 1/2 minutes, until the Diesel Generator output breaker was opened and      |
| voltages returned to less than 4300V.                                        |
|                                                                              |
| The Division Three AC Power Distribution System was declared INOPERABLE due  |
| to being above 4300V pending an Engineering evaluation of the overvoltage    |
| condition.  CPS Improved Technical Specification 3.8.9, Action E.1 requires  |
| High Pressure Core Spray to be declared INOPERABLE with the Division Three   |
| AC Power Distribution System INOPERABLE.                                     |
|                                                                              |
| The Division Three Diesel Generator was also declared INOPERABLE.            |
|                                                                              |
| The cause of the overvoltage is not known and is being investigated at this  |
| time.                                                                        |
|                                                                              |
| NRC Resident Inspector C. Brown was notified.                                |
|                                                                              |
|                                                                              |
| * * * UPDATE ON 3/2/00 @ 1441 BY FUNCKHOUSER TO GOULD * * *                  |
|                                                                              |
| All portions of the Division Three AC Distribution System were initially     |
| declared INOPERABLE.  The Division Three AC Distribution System has had an   |
| Engineering Evaluation performed and restored to an OPERABLE status.   At    |
| this time the High Pressure Core Spray (HPCS) System was restored to an      |
| OPERABLE status.  The Division Three Diesel Generator is being worked to     |
| restore it to an OPERABLE status, subsequent to the abnormal conditions      |
| experienced during the Division 3 Diesel Generator run on Monday, February   |
| 28, 2000.                                                                    |
|                                                                              |
| The plants Technical Specifications Limited Condition for Operation (LCO)    |
| section 3.8.1, AC Sources Operating, does not require the Division 3 AC      |
| electrical power sources to be OPERABLE when the HPCS System is inoperable   |
| and it allows the use of the HPCS LCO in lieu of the Division 3 Diesel       |
| Generator.  Thus, the High Pressure Core Spray (HPCS) System has been        |
| declared INOPERABLE at approximately 1000 on March 2, 2000 in lieu of the    |
| Division 3 AC Source (Division 3 DG). This is allowed by the LCO 3.8.1       |
| Bases, Applicability section. The HPCS System LCO is covered in Technical    |
| Specifications section 3.5.1.                                                |
|                                                                              |
| At 1000 on 3/2/00 the plant exited LCO 3.8.1 and entered LCO 3.5.1.          |
|                                                                              |
| The NRC Resident Inspector was informed.                                     |
|                                                                              |
| The Reg 3 RDO(Jordan) was notified.                                          |
+------------------------------------------------------------------------------+

!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED  !!!!!!!
+------------------------------------------------------------------------------+
|General Information or Other                     |Event Number:   36741       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  US ARMY (ACALA)                      |NOTIFICATION DATE: 03/01/2000|
|LICENSEE:  US ARMY (ACALA)                      |NOTIFICATION TIME: 10:36[EST]|
|    CITY:  ROCK ISLAND              REGION:  3  |EVENT DATE:        02/17/2000|
|  COUNTY:                            STATE:  IL |EVENT TIME:        12:00[CST]|
|LICENSE#:  12-00722-06           AGREEMENT:  Y  |LAST UPDATE DATE:  03/02/2000|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |MIKE JORDAN          R3      |
|                                                |DON COOL             NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  TIM MOHS                     |                             |
|  HQ OPS OFFICER:  DICK JOLLIFFE                |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|IBAD 30.50(b)(1)(ii)     MATL >5X LOWEST LIMIT  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| - M1A1 COLLIMATOR WAS OVERPRESSURIZED AND RUPTURED -                         |
|                                                                              |
| On 02/17/00, while the Third Army Corp Maintenance Unit from Fort            |
| Wainwright, AK, was performing a purge for Fort Hood units during training   |
| at Fort Irwin, CA, an M1A1 collimator containing 10 curies of tritium was    |
| overpressurized and ruptured.  The M1A1 collimator was double bagged but not |
| reported to the Fort Irwin Radiation Safety Officer.  On 02/29/00, when the  |
| military van containing the M1A1 collimator was being readied for shipment   |
| back to Fort Wainwright, the broken M1A1 collimator was noted and surveyed.  |
| The survey came back contaminated (as high as 255,000 dpm).  The military    |
| van is being held at Army/Marine Base, Yermo Annex, Barstow, CA, by Fort     |
| Hood personnel.  Results are pending.  The two individuals who performed the |
| purge are being bioassayed.  Results are pending.  Further investigation of  |
| what happened and surveys to determine contamination status are ongoing.     |
| Army Incident #00-12.                                                        |
|                                                                              |
| * * * UPDATE AT 1040 ON 03/02/00 FROM TIM MOHS TO JOLLIFFE * * *             |
|                                                                              |
| The results of the bioassays indicated that no dose was received by either   |
| individual.  No personnel were contaminated.  Radiation levels inside the    |
| van were less than release limits.  Thus, the licensee desires to retract    |
| this event.                                                                  |
|                                                                              |
| The NRC Operations Officer notified the R3DO Mike Jordan and NMSS EO Brian   |
| Smith.                                                                       |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36748       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: MCGUIRE                  REGION:  2  |NOTIFICATION DATE: 03/02/2000|
|    UNIT:  [1] [2] []                STATE:  NC |NOTIFICATION TIME: 18:18[EST]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        03/02/2000|
+------------------------------------------------+EVENT TIME:        18:00[EST]|
| NRC NOTIFIED BY:  HUSSEY                       |LAST UPDATE DATE:  03/02/2000|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |LEN WERT             R2      |
|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  |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| THE LICENSEE DISCOVERED NON-CONSERVATISM IN CRITICALITY CALCULATIONS FOR     |
| FUEL POOL STORAGE REQUIREMENTS.                                              |
|                                                                              |
| It was determined that certain assumptions may result in a K-effective       |
| (K-eff) in excess of 0.95 at 0 ppm boron concentration in the spent fuel     |
| pool.  The Design Basis of the plant is that the fuel stored in the fuel     |
| pool will remain less than or equal to 0.95 K-eff when fully flooded with    |
| unborated water.  As such the Licensee is reporting this as a condition      |
| outside the design basis of the plant in accordance with                     |
| 10CFR50.72(b)(1)(ii)(B).                                                     |
|                                                                              |
| Currently each spent fuel pool has boron concentrations in excess of 2675    |
| ppm as required by Technical Specifications.  Under these conditions, with   |
| routine monitoring of boron concentration as required by Technical           |
| Specifications, the plant will not require any compensatory measures to      |
| remain operable in the fuel pool.  Duke will continue to evaluate the models |
| to further evaluate this condition.                                          |
|                                                                              |
| The NRC Resident Inspector was informed.                                     |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36749       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SOUTH TEXAS              REGION:  4  |NOTIFICATION DATE: 03/02/2000|
|    UNIT:  [1] [] []                 STATE:  TX |NOTIFICATION TIME: 19:25[EST]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        03/02/2000|
+------------------------------------------------+EVENT TIME:        16:30[CST]|
| NRC NOTIFIED BY:  MORRIS                       |LAST UPDATE DATE:  03/02/2000|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |CHARLES CAIN         R4      |
|10 CFR SECTION:                                 |                             |
|NLCO                     TECH SPEC LCO A/S      |                             |
|NLTR                     LICENSEE 24 HR REPORT  |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Cold Shutdown    |0        Cold Shutdown    |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| LICENSEE DID NOT COMPLY WITH LCO ACTION STATEMENTS                           |
|                                                                              |
| On March 1, 2000 at 1008 hours, 125 VDC Battery System E1A11 was declared    |
| inoperable.  Subsequently, in accordance with Technical Specifications       |
| 3.8.2.2, "D. C. Sources," and 3.8.3.2, "Onsite Power Distribution -          |
| Shutdown," Nuclear Instrumentation Source Range Detector 31 should have been |
| declared inoperable or actions should have been initiated to suspend         |
| operations involving positive reactivity changes.  Contrary to these         |
| requirements, Source Range Detector 31 was not declared inoperable, and at   |
| 0027 hours on March 2, 2000, control rods were moved as part of rapid        |
| refueling rod holdout operations.  The rods were cycled 18 steps 3 times     |
| between the hours 0027 and 0400 @ 3/2/00.  No movements have taken place     |
| since then.  Detector 31 has been declared inoperable and is still           |
| inoperable.                                                                  |
|                                                                              |
| The NRC Resident Inspector has been notified.                                |
|                                                                              |
| This notification is being made pursuant to Operating License NPF-76         |
| Condition 2.G for operation or condition prohibited by Technical             |
| Specifications.                                                              |
+------------------------------------------------------------------------------+


Page Last Reviewed/Updated Thursday, March 25, 2021