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Event Notification Report for August 1, 2000

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           07/31/2000 - 08/01/2000

                              ** EVENT NUMBERS **

37199  37200  

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|Power Reactor                                    |Event Number:   37199       |
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| FACILITY: ARKANSAS NUCLEAR         REGION:  4  |NOTIFICATION DATE: 07/30/2000|
|    UNIT:  [] [2] []                 STATE:  AR |NOTIFICATION TIME: 18:39[EDT]|
|   RXTYPE: [1] B&W-L-LP,[2] CE                  |EVENT DATE:        07/30/2000|
+------------------------------------------------+EVENT TIME:        16:35[CDT]|
| NRC NOTIFIED BY:  TOM MOSBY                    |LAST UPDATE DATE:  07/31/2000|
|  HQ OPS OFFICER:  STEVE SANDIN                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |BILL JONES           R4      |
|10 CFR SECTION:                                 |                             |
|ADAS 50.72(b)(2)(i)      DEG/UNANALYZED COND    |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|2     N          N       0        Cold Shutdown    |0        Cold Shutdown    |
|                                                   |                          |
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                                   EVENT TEXT                                   
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| INDICATION OF REACTOR COOLANT LEAKAGE ON PRESSURIZER HEATER PENETRATIONS     |
|                                                                              |
| "Boron was discovered on the reactor coolant system (RCS) pressurizer heater |
| power cables.  An inspection of the heater sleeves was performed and it      |
| appears that two heaters (B2 and D2) are leaking.  B2 is on backup heater    |
| bank #4 and D2 is on backup heater bank #6. The leakage appears to be the    |
| result of primary water stress corrosion cracking (PWSCC) of either the      |
| heater sleeve or the J-groove weld between the heater sleeve and the         |
| pressurizer cladding. The insulation will need to be removed to positively   |
| determine which heater sleeve(s) had been leaking.  Currently, Unit 2 is in  |
| reduced inventory with the pressurizer empty.  The pressurizer heater sleeve |
| penetrations were inspected during 2R-13 [between 1/9/99 and 2/25/99] as     |
| part of the routine I-600 inspections performed each refueling outage.  No   |
| indication of leakage was evident during that inspection.  Pressurizer       |
| heater sleeve leakage is considered RCS pressure boundary leakage."          |
|                                                                              |
| The licensee notified the NRC Resident Inspector.                            |
|                                                                              |
| * * * UPDATE AT 0052 ON 07/31/00 BY LARRY McLERRAN TO JOLLIFFE * * *         |
|                                                                              |
| After removing insulation from the pressurizer and RCS hot legs, the         |
| licensee discovered 9 or 10 additional pressurizer heater sleeves that are   |
| leaking and also a hot leg temperature element (TE) that is leaking.  The    |
| licensee is continuing to inspect the hot leg penetrations for evidence of   |
| leakage.                                                                     |
|                                                                              |
| The licensee notified the NRC Resident Inspector.  The NRC Operations        |
| Officer notified R4DO Bill Jones.                                            |
|                                                                              |
| * * * UPDATE AT 0829 ON 07/31/00 BY WAYNE AHO TO JOLLIFFE * * *              |
|                                                                              |
| The licensee discovered indications on RCS hot leg TE #2TE-4710-3 that is    |
| indicative of a  RCS pressure boundary leak.  The TE is installed above the  |
| water line in the 'B' hot leg on the reactor coolant pump #2P-32C side.  The |
| licensee is continuing to inspect the hot leg penetrations for evidence of   |
| leakage.                                                                     |
|                                                                              |
| The licensee plans to notify the NRC Resident Inspector.  The NRC Operations |
| Officer notified R4DO Bill Jones.                                            |
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|Power Reactor                                    |Event Number:   37200       |
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| FACILITY: CLINTON                  REGION:  3  |NOTIFICATION DATE: 07/31/2000|
|    UNIT:  [1] [] []                 STATE:  IL |NOTIFICATION TIME: 12:11[EDT]|
|   RXTYPE: [1] GE-6                             |EVENT DATE:        07/31/2000|
+------------------------------------------------+EVENT TIME:        10:18[CDT]|
| NRC NOTIFIED BY:  ROBERT POWERS                |LAST UPDATE DATE:  07/31/2000|
|  HQ OPS OFFICER:  DOUG WEAVER                  +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JAMES CREED          R3      |
|10 CFR SECTION:                                 |                             |
|AESS 50.72(b)(1)(v)      EMERGENCY SIREN 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  |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| EMERGENCY SIRENS INOPERABLE                                                  |
|                                                                              |
| On 7/31/00, a system test of the emergency sirens was conducted.  During     |
| this test it was discovered that a large number of emergency sirens are not  |
| functioning.  It is believed that the sirens are not functional due to a     |
| lightning strike which occurred during storms which passed through the area  |
| last night.                                                                  |
|                                                                              |
| The licensee notified the NRC resident inspector and Dewitt County.          |
|                                                                              |
| * * * UPDATE AT 2317 ON 7/31/00 BY FUNKHOUSER RECEIVED BY WEAVER * * *       |
|                                                                              |
| The sirens were restored at approximately 1600 CDT on 7/31/00.  The licensee |
| notified the NRC resident inspector.  The NRC Operations Officer notified    |
| the R3DO (Jim Creed).                                                        |
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