Event Notification Report for June 1, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           05/31/2000 - 06/01/2000

                              ** EVENT NUMBERS **

37045  37046  

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|General Information or Other                     |Event Number:   37045       |
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| REP ORG:  US AIR FORCE                         |NOTIFICATION DATE: 05/31/2000|
|LICENSEE:  US AIR FORCE                         |NOTIFICATION TIME: 13:19[EDT]|
|    CITY:  BROOKS AFB               REGION:  4  |EVENT DATE:        05/30/2000|
|  COUNTY:                            STATE:  TX |EVENT TIME:        09:00[CDT]|
|LICENSE#:  42-23539-01AF         AGREEMENT:  Y  |LAST UPDATE DATE:  05/31/2000|
|  DOCKET:  03028641                             |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |GARY SANBORN         R4      |
|                                                |JOHN HICKEY          NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  MAJ. WROBEL                  |                             |
|  HQ OPS OFFICER:  CHAUNCEY GOULD               |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|IBBF 30.50(b)(2)(ii)     EQUIP DISABLED/FAILS   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
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                                   EVENT TEXT                                   
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| SOURCE COULD NOT BE MOVED TO THE EXPOSURE POSITION WHILE ATTEMPTING TO USE   |
| AN IRRADIATOR AT BROOKS AFB, TEXAS.                                          |
|                                                                              |
| A J L SHEPHERD 81-10 IRRADIATOR CONTAINING 130 CURIE SOURCE OF CS-137 WOULD  |
| NOT OPERATE PROPERLY WHEN THE OPERATOR ATTEMPTED TO USE IT.  THE SOURCE      |
| APPEARS TO BE STUCK IN THE SHIELDED POSITION AND CAN NOT BE MOVED TO THE     |
| EXPOSURE POSITION.  THE AIR FORCE IS CURRENTLY TROUBLESHOOTING WITH THE      |
| VENDOR VIA TELEPHONE TO CORRECT THE PROBLEM.  IF NOTHING CAN BE DONE THEY    |
| WILL CALL IN THE VENDOR.  THE SOURCE IS IN THE SHIELDED POSITION.            |
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|Power Reactor                                    |Event Number:   37046       |
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| FACILITY: LASALLE                  REGION:  3  |NOTIFICATION DATE: 05/31/2000|
|    UNIT:  [] [2] []                 STATE:  IL |NOTIFICATION TIME: 18:04[EDT]|
|   RXTYPE: [1] GE-5,[2] GE-5                    |EVENT DATE:        05/31/2000|
+------------------------------------------------+EVENT TIME:        13:30[CDT]|
| NRC NOTIFIED BY:  COVEYOU                      |LAST UPDATE DATE:  05/31/2000|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |GARY SHEAR           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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|2     N          Y       97       Power Operation  |97       Power Operation  |
|                                                   |                          |
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                                   EVENT TEXT                                   
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| PLANT ENTERED A 7 DAY LCO DUE TO HPCS BEING DECLARED INOPERABLE.             |
|                                                                              |
| While performing monthly surveillance start LOS-DG-M3, for the High-Pressure |
| Core Spray (HPCS) systems Emergency Diesel Generator, the Diesel             |
| automatically tripped off on an over-speed signal. The Diesel was being      |
| started from an idle condition while an operator was attempting to maintain  |
| speed between 400 and 500 rpm. The Diesel does not appear to have been       |
| damaged but remains shutdown and unavailable for on-going investigation of   |
| the failure. The High-Pressure Core Spray system is inoperable but available |
| from normal power source only. The failure mechanism is being investigated   |
| and corrective actions will be performed.                                    |
|                                                                              |
| The NRC Resident Inspector was notified.                                     |
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