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Event Notification Report for July 12, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           07/11/2000 - 07/12/2000

                              ** EVENT NUMBERS **

37160  37161  37162  37163  

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|Other Nuclear Material                           |Event Number:   37160       |
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| REP ORG:  U.S. AIR FORCE                       |NOTIFICATION DATE: 07/11/2000|
|LICENSEE:  U.S. AIR FORCE                       |NOTIFICATION TIME: 10:33[EDT]|
|    CITY:  LEXINGTON                REGION:  2  |EVENT DATE:        07/10/2000|
|  COUNTY:                            STATE:  SC |EVENT TIME:        12:00[EDT]|
|LICENSE#:  42-23539-01AF         AGREEMENT:  Y  |LAST UPDATE DATE:  07/11/2000|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |GEORGE BELISLE       R2      |
|                                                |LINDA HOWELL         R4      |
+------------------------------------------------+DON COOL             NMSS    |
| NRC NOTIFIED BY:  MAJOR WROBEL                 |                             |
|  HQ OPS OFFICER:  DOUG WEAVER                  |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|IBAC 30.50(b)(1)(i)      ACCESS DENIED >24 HRS  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
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                                   EVENT TEXT                                   
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| TWO AIRCRAFT ENGINE SET OFF PORTAL ALARMS                                    |
|                                                                              |
| TWO AIRCRAFT ENGINES SENT TO CMC LEXINGTON IN LEXINGTON, SC SET OFF THE      |
| PORTAL ALARMS AT THEIR FACILITY ON 6/7/00.  CMC LEXINGTON NOTIFIED THE U.S.  |
| AIR FORCE OF THE EVENT.  THE AIR FORCE HAD INITIALLY ASSUMED THAT THE ALARMS |
| WERE CAUSED BY A MAGNESIUM THORIUM ALLOY USED IN THE ENGINES.  HOWEVER,      |
| SURVEYS CONDUCTED ON 7/6/00, DISCOVERED LOW LEVELS OF BOTH BETA/GAMMA AND    |
| ALPHA CONTAMINATION.                                                         |
|                                                                              |
| THE AIR FORCE IS SENDING A TEAM TO THE SITE TOMORROW TO FURTHER ANALYZE THE  |
| CONTAMINANTS AND PLAN A COURSE OF ACTION.  THE ISOTOPE(S) INVOLVED WERE NOT  |
| KNOWN AT THE TIME OF THE REPORT.  THE ENGINES HAVE BEEN PLACED IN A LOCATION |
| TO PREVENT ANY SPREAD OF CONTAMINATION.                                      |
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|Power Reactor                                    |Event Number:   37161       |
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| FACILITY: SURRY                    REGION:  2  |NOTIFICATION DATE: 07/11/2000|
|    UNIT:  [1] [2] []                STATE:  VA |NOTIFICATION TIME: 16:33[EDT]|
|   RXTYPE: [1] W-3-LP,[2] W-3-LP                |EVENT DATE:        07/11/2000|
+------------------------------------------------+EVENT TIME:        16:10[EDT]|
| NRC NOTIFIED BY:  BRANFORD STANLEY             |LAST UPDATE DATE:  07/11/2000|
|  HQ OPS OFFICER:  BOB STRANSKY                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |THOMAS DECKER        R2      |
|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          Y       100      Power Operation  |100      Power Operation  |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
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                                   EVENT TEXT                                   
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| FITNESS FOR DUTY REPORT                                                      |
|                                                                              |
| A licensed operator tested positive for illegal drug use during a random     |
| test administered on 6/29/00. The individual's site access has been          |
| suspended. The NRC resident inspector will be informed of this notification  |
| by the licensee.                                                             |
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|Fuel Cycle Facility                              |Event Number:   37162       |
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| FACILITY: PORTSMOUTH GASEOUS DIFFUSION PLANT   |NOTIFICATION DATE: 07/11/2000|
|   RXTYPE: URANIUM ENRICHMENT FACILITY          |NOTIFICATION TIME: 18:02[EDT]|
| COMMENTS: 2 DEMOCRACY CENTER                   |EVENT DATE:        07/11/2000|
|           6903 ROCKLEDGE DRIVE                 |EVENT TIME:        09:45[EDT]|
|           BETHESDA, MD 20817    (301)564-3200  |LAST UPDATE DATE:  07/11/2000|
|    CITY:  PIKETON                  REGION:  3  +-----------------------------+
|  COUNTY:  PIKE                      STATE:  OH |PERSON          ORGANIZATION |
|LICENSE#:  GDP-2                 AGREEMENT:  N  |BRUCE JORGENSEN      R3      |
|  DOCKET:  0707002                              |                             |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  JIM McCLEERY                 |                             |
|  HQ OPS OFFICER:  BOB STRANSKY                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NBNL                     RESPONSE-BULLETIN      |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
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                                   EVENT TEXT                                   
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| 24-HOUR NRC BULLETIN 91-01 REPORT                                            |
|                                                                              |
| "NCSA-PLANT-012 (Favorable Geometry Vacuum Cleaner) Control number 3         |
| requires a steel liner to be used in an F-can when enrichment is known or    |
| expected to exceed >80%. At 0945 on 7/11/00, it was discovered that the      |
| steel liner was constructed of expanded metal (grating), therefore the liner |
| would not perform its intended function as described in the associated NCSE. |
| The intended function is to reduce the internal diameter of the F-can to     |
| less than five inches. The affected F-cans were verified to contain less     |
| than the safe mass of U-235. The NCSA is deficient since it references a     |
| drawing of a liner that cannot perform its intended function.                |
|                                                                              |
| SAFETY SIGNIFICANCE OF EVENTS:                                               |
|                                                                              |
| Safety significance is low because the highest mass in any F-can on site     |
| with greater than 80% enrichment material is 304 grams U-235 and the USEC    |
| site limit for >20% enrichment material is 1000 grams U-235. The mass in the |
| F-cans and the site limit are well below the contingency limit for not using |
| an F-can liner(2500 grams U-235 at 80% enrichment) and current               |
| NCSA-PLANT-012 operations are below 80% enrichment, in the unlikely event    |
| that 2500 grams of high enriched U-235 was present in the F can, an          |
| additional event, such as the presence of full reflection or spacing         |
| violation would be required before obtaining a critical configuration        |
|                                                                              |
| "POTENTIAL CRITICALITY PATHWAYS INVOLVED (BRIEF SCENARIO[S] OF HOW           |
| CRITICALITY COULD OCCUR):                                                    |
|                                                                              |
| "A critical configuration would require an F-can to be used to collect 80%   |
| or greater enriched material that exceeded 2500 grams. In the unlikely event |
| of exceeding 2500 grams of 80% enriched material in the F-can, an additional |
| unlikely event, such as the F-can being exposed to full water reflection or  |
| a spacing violation would have [been] necessary before a critical            |
| configuration existed. The probability of all of these conditions existing   |
| simultaneously is very low.                                                  |
|                                                                              |
| "CONTROLLED PARAMETERS (MASS, MODERATION. GEOMETRY, CONCENTRATION, ETC.):    |
|                                                                              |
| "Volume, geometry, moderation and interaction are controlled. Geometry       |
| control could have been lost since the referenced drawing for the liner does |
| not meet the geometry requirements of the NCSE. Full reflection or an        |
| interaction violation is required before a criticality configuration could   |
| exist.                                                                       |
|                                                                              |
| "ESTIMATED AMOUNT, ENRICHMENT, FORM OF LICENSED MATERIAL (INCLUDE PROCESS    |
| LIMIT AND % WORST CASE OF CRITICAL MASS):                                    |
|                                                                              |
| "The highest mass in any F-can with greater than 80% enriched material on    |
| site is 304 grams U-235. Since this is 87% of safe mass, the safety          |
| significance is low.                                                         |
|                                                                              |
| "NUCLEAR CRITICALITY SAFETY CONTROL(S) OR CONTROL SYSTEM(S) AND DESCRIPTION  |
| OF THE FAILURES OR DEFICIENCIES:                                             |
|                                                                              |
| "The NCS control system is deficient since the NCSA references a steel liner |
| in a drawing that does not perform its intended function of reducing the     |
| F-can liner diameter to 5 inches or less. The safety significance is low     |
| since the mass in F-cans is low and an additional event such as full         |
| reflection or a spacing violation would have to accompany an excessive F-can |
| mass before a criticality would be possible.                                 |
|                                                                              |
| "CORRECTIVE ACTIONS TO RESTORE SAFETY SYSTEM AND WHEN EACH WAS IMPLEMENTED:  |
|                                                                              |
| "A stop work notice was issued for favorable geometry vacuum cleaners when   |
| enrichment is known or suspected to exceed 80%."                             |
|                                                                              |
| The NRC resident inspector has been informed of this event.                  |
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|Power Reactor                                    |Event Number:   37163       |
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| FACILITY: LASALLE                  REGION:  3  |NOTIFICATION DATE: 07/11/2000|
|    UNIT:  [1] [] []                 STATE:  IL |NOTIFICATION TIME: 21:40[EDT]|
|   RXTYPE: [1] GE-5,[2] GE-5                    |EVENT DATE:        07/11/2000|
+------------------------------------------------+EVENT TIME:        19:50[CDT]|
| NRC NOTIFIED BY:  RUSSELL BENNETT              |LAST UPDATE DATE:  07/11/2000|
|  HQ OPS OFFICER:  BOB STRANSKY                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |BRUCE JORGENSEN      R3      |
|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  |
|                                                   |                          |
|                                                   |                          |
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                                   EVENT TEXT                                   
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| UNIT OUTSIDE DESIGN BASIS DUE TO 10 CFR PART 50, APPENDIX R ISSUE            |
|                                                                              |
| "At approximately 1610 on 7/11/2000, it was identified by plant walkdown     |
| that in electrical switchgear Bus 142Y (1AP06B) cubicle 4 (for the Unit 1 B  |
| Residual Heat Removal pump) that an unsealed borehole of approximately three |
| (3) inches in diameter existed. This borehole is located in the floor        |
| separating the Unit 1 Division 2 Switchgear room from the Unit 1 Division 1  |
| switchgear room. The borehole is located in a three (3) hour rated fire      |
| barrier that is required by Administrative Technical Requirement 3/4.7.6     |
| (Fire Rated Assemblies). This has been considered an event that is outside   |
| the design basis due to required design basis protective features for safe   |
| shutdown trains as described in 10 CFR 50, Appendix R and Final Safety       |
| Analysis Report [being] lacking. Compensatory measures (fire watches) have   |
| been established per Administrative Technical Specifications and plans for   |
| repairs are in progress."                                                    |
|                                                                              |
| The NRC resident inspector has been notified of this event by the licensee.  |
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