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Event Notification Report for October 4, 1999

                    U.S. Nuclear Regulatory Commission
                              Operations Center

                              Event Reports For
                           10/01/1999 - 10/04/1999

                              ** EVENT NUMBERS **

36145  36238  36249  36250  36251  36252  36253  36254  36255  36256  

!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED  !!!!!!!
+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36145       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: INDIAN POINT             REGION:  1  |NOTIFICATION DATE: 09/10/1999|
|    UNIT:  [] [3] []                 STATE:  NY |NOTIFICATION TIME: 14:53[EDT]|
|   RXTYPE: [2] W-4-LP,[3] W-4-LP                |EVENT DATE:        09/10/1999|
+------------------------------------------------+EVENT TIME:        14:00[EDT]|
| NRC NOTIFIED BY:  MICHAEL TESORIERO            |LAST UPDATE DATE:  10/01/1999|
|  HQ OPS OFFICER:  WILLIAM POERTNER             +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |TOM MOSLAK           R1      |
|10 CFR SECTION:                                 |                             |
|ASHU 50.72(b)(1)(i)(A)   PLANT S/D REQD BY TS   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|3     N          Y       87       Power Operation  |86       Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
|  PLANT SHUTDOWN REQUIRED BY TECHNICAL SPECIFICATIONS DUE TO PINHOLE LEAK IN  |
| THE ESSENTIAL SERVICE WATER SYSTEM.                                          |
|                                                                              |
| At approximately 1400 hours on September 10, 1999, a plant shutdown was      |
| commenced as scheduled to enter a refueling outage. The ENS notification is  |
| being made because a portion of the Essential Service Water (SW) header was  |
| declared inoperable at approximately 1215 hours.  A pinhole leak on 18 inch  |
| SW pipe number 408 was evaluated using the guidance of Generic Letter 90-05  |
| and it was determined that the SW pipe could not be declared operable using  |
| the criteria provided in the Generic Letter. Concurrent with the planned     |
| shutdown, Technical Specification 3.3.F.2 requires the reactor be brought to |
| the cold shutdown condition starting no later than 12 hours after the SW     |
| pipe was declared inoperable. The SW pipe will be repaired prior to plant    |
| startup.                                                                     |
|                                                                              |
| The SW pipe leak is located outside containment and can not be isolated for  |
| repairs until the plant is in cold shutdown. The SW pipe supplies the        |
| containment Fan Cooler units which are required by Technical Specifications. |
| The leak rate is I to 2 drops per minute.                                    |
|                                                                              |
| The NRC resident inspector has been notified.                                |
|                                                                              |
| * * * RETRACTED AT 1354 EDT ON 10/1/99 BY BRIAN ROKES TO FANGIE JONES * * *  |
|                                                                              |
| "The New York Power Authority (NYPA) is withdrawing the 1 hour non-emergency |
| report made at 1453 hours,                                                   |
| on September 10, 1999 (ENS Log No. 36145). The report identified that a 18   |
| inch Service Water (SW) pipe,                                                |
| comprising a portion of the essential header outside containment, contained  |
| a pin hole leak that could not meet                                          |
| the operability criteria of Generic Letter 90-05. The SW pipe supplies the   |
| containment Fan Cooler Units. The                                            |
| inoperable SW pipe could not be isolated for repairs until the plant was in  |
| cold shutdown.                                                               |
|                                                                              |
| "Upon further assessment NYPA determined that this event is not reportable.  |
| A revised calculation of the                                                 |
| structural integrity of the pipe using the pipe stresses at the exact        |
| location of the weld with a through-wall flaw                                |
| (pin hole) determined the piping was operable using the guidelines of NRC GL |
| 90-05. The new calculation                                                   |
| supersedes the original calculation which was performed conservatively by    |
| using a stress value enveloping two                                          |
| stress points on the pipe that resulted in the use of a higher stress value. |
| The through-wall flaw occurred when                                          |
| the pipe weld was ground down for a Ultrasonic Testing. The UT was planned   |
| based on an Radiographic Test previously performed in RO 9. It was required  |
| and is standard industry practice to grind the weld flat for a proper        |
| straight beam UT. As part of NYPA's corrective action program, the cause and |
| extent of condition of the through-wall flaw in a weld of SW piping is being |
| evaluated and any repairs required will be performed before start-up from    |
| the current outage                                                           |
| (RO 10)."                                                                    |
|                                                                              |
| The licensee notified the NRC Resident Inspector.  The R1DO (David Silk) has |
| been notified.                                                               |
+------------------------------------------------------------------------------+

!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED  !!!!!!!
+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36238       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: GRAND GULF               REGION:  4  |NOTIFICATION DATE: 09/29/1999|
|    UNIT:  [1] [] []                 STATE:  MS |NOTIFICATION TIME: 11:26[EDT]|
|   RXTYPE: [1] GE-6                             |EVENT DATE:        09/29/1999|
+------------------------------------------------+EVENT TIME:        08:30[CDT]|
| NRC NOTIFIED BY:  WALTER CADE                  |LAST UPDATE DATE:  10/01/1999|
|  HQ OPS OFFICER:  WILLIAM POERTNER             +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JEFF SHACKELFORD     R4      |
|10 CFR SECTION:                                 |DWIGHT CHAMBERLAIN   R4      |
|DDDD 73.71               UNSPECIFIED PARAGRAPH  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| POTENTIAL SABOTAGE WITH SAFETY EQUIPMENT                                     |
|                                                                              |
| Immediate compensatory measures were taken upon discovery.                   |
|                                                                              |
| The NRC resident inspector has been notified by the licensee.                |
|                                                                              |
| (Refer to the HOO Log for additional details.)                               |
|                                                                              |
| * * * UPDATE 1335EDT ON 10/1/99 FROM DAVID HANKS TO S. SANDIN * * *          |
|                                                                              |
| THE LICENSEE IS RETRACTING THIS REPORT AFTER FURTHER REVIEW.  CONTACT THE    |
| NRC OPERATIONS CENTER FOR ADDITIONAL DETAILS.  THE LICENSEE WILL INFORM THE  |
| NRC RESIDENT INSPECTOR.  NOTIFIED R4DO(SHACKELFORD).                         |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36249       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SALEM                    REGION:  1  |NOTIFICATION DATE: 10/01/1999|
|    UNIT:  [1] [] []                 STATE:  NJ |NOTIFICATION TIME: 03:19[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        09/30/1999|
+------------------------------------------------+EVENT TIME:        23:30[EDT]|
| NRC NOTIFIED BY:  STEVE SAUER                  |LAST UPDATE DATE:  10/01/1999|
|  HQ OPS OFFICER:  DOUG WEAVER                  +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |DAVID SILK           R1      |
|10 CFR SECTION:                                 |                             |
|AIND 50.72(b)(2)(iii)(D) ACCIDENT MITIGATION    |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Refueling        |0        Refueling        |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| RHR PUMP DISCHARGE VALVE FAILED TO CLOSE ON DEMAND                           |
|                                                                              |
| The #12 Residual Heat Removal (RHR) pump motor operated discharge valve      |
| failed to close upon demand.  This valve is required by Emergency Operating  |
| Procedures to be closed during cold leg recirculation to provide long term   |
| containment spray.  The cause of the failure is currently under              |
| investigation.                                                               |
|                                                                              |
| The licensee will inform the NRC resident inspector and LAC Township.        |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36250       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: CRYSTAL RIVER            REGION:  2  |NOTIFICATION DATE: 10/01/1999|
|    UNIT:  [3] [] []                 STATE:  FL |NOTIFICATION TIME: 03:51[EDT]|
|   RXTYPE: [3] B&W-L-LP                         |EVENT DATE:        10/01/1999|
+------------------------------------------------+EVENT TIME:        01:14[EDT]|
| NRC NOTIFIED BY:  RICKY RAWLS                  |LAST UPDATE DATE:  10/01/1999|
|  HQ OPS OFFICER:  DOUG WEAVER                  +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |RUDOLPH BERNHARD     R2      |
|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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|3     N          Y       4        Startup          |4        Startup          |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| EMERGENCY FEEDWATER START                                                    |
|                                                                              |
| The unit was in the process of a normal plant shut down for a refueling      |
| outage when the running Main Feedwater pump (MFP-2A) tripped.  The tripping  |
| of the only running feedwater pump caused Emergency Feedwater to actuate     |
| (EFP-1 and EFP-2).  The plant did not experience any abnormal changes in     |
| OTSG level or other systems.  The cause of the MFP trip is unknown at this   |
| time.  The "B" MFP (MFP-2B) was started and emergency feedwater secured and  |
| reset.                                                                       |
|                                                                              |
| The licensee informed the NRC resident inspector.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|General Information or Other                     |Event Number:   36251       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG:  ARKANSAS DEPT OF HEALTH              |NOTIFICATION DATE: 10/01/1999|
|LICENSEE:  ARKANSAS CHILDREN'S HOSPITAL         |NOTIFICATION TIME: 11:38[EDT]|
|    CITY:  LITTLE ROCK              REGION:  4  |EVENT DATE:        09/29/1999|
|  COUNTY:                            STATE:  AR |EVENT TIME:        12:00[CDT]|
|LICENSE#:  572-INC-02-96         AGREEMENT:  Y  |LAST UPDATE DATE:  10/01/1999|
|  DOCKET:                                       |+----------------------------+
|                                                |PERSON          ORGANIZATION |
|                                                |JEFF SHACKELFORD     R4      |
|                                                |JOSIE PICCONE        NMSS    |
+------------------------------------------------+                             |
| NRC NOTIFIED BY:  DAVID SNELLINGS              |                             |
|  HQ OPS OFFICER:  DOUG WEAVER                  |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NAGR                     AGREEMENT STATE        |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| AGREEMENT STATE REPORT -  P-32 CONTAMINATION                                 |
|                                                                              |
| "On September 30, 1999, the Radiation Safety Officer (RSO) at Arkansas       |
| Children's Hospital (ARK-572-lNC-02-96) in Little Rock, Arkansas notified    |
| the Arkansas Department of Health of an event that occurred at approximately |
| 12:00 p.m. on September 29, 1999. During a Phosphorus-32 (P-32) therapy      |
| procedure, a problem with the stopcock resulted in a release of              |
| approximately 500 microCuries on the table, floor and clothing of two        |
| individuals.                                                                 |
|                                                                              |
| "One individual was slightly contaminated on the forearm and was immediately |
| decontaminated. Clothing, shoes and other contaminated items were collected  |
| and are being held for decay. Decontamination of the floor was still ongoing |
| at the time of the original notification. Notification was required because  |
| the room had been restricted for more than 24 hours by imposing additional   |
| radiological controls or prohibiting entry into the room due to an unplanned |
| contamination event                                                          |
| (CFR 30.50B.1.).                                                             |
|                                                                              |
| "The contaminated area was less than 150 square feet and the highest         |
| measured activity was 2300 dpm/100 square centimeters. The area was          |
| successfully decontaminated and has been released for normal operations."    |
|                                                                              |
| The licensee will submit a written report describing the event and the       |
| corrective actions taken.                                                    |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36252       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: PILGRIM                  REGION:  1  |NOTIFICATION DATE: 10/01/1999|
|    UNIT:  [1] [] []                 STATE:  MA |NOTIFICATION TIME: 11:52[EDT]|
|   RXTYPE: [1] GE-3                             |EVENT DATE:        10/01/1999|
+------------------------------------------------+EVENT TIME:        11:00[EDT]|
| NRC NOTIFIED BY:  FRANCIS CLIFFORD             |LAST UPDATE DATE:  10/01/1999|
|  HQ OPS OFFICER:  STEVE SANDIN                 +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |DAVID SILK           R1      |
|10 CFR SECTION:                                 |JOSIE PICCONE        NMSS    |
|KSNM 70.52(a)            LOSS OF SNM/CRIT       |JOSEPH GIITTER       IRO     |
|                                                |MICHAEL WEBER (IAT)  NMSS    |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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                                   
+------------------------------------------------------------------------------+
| HISTORICAL REPORT INVOLVING MISPLACEMENT OF SPECIAL NUCLEAR MATERIAL         |
|                                                                              |
| "This is a late report of a loss of a very small amount of Special Nuclear   |
| Material (SNM) that occurred on July 29, 1998.  For a period of no more than |
| 29 days, 4 IRMs were not properly stored in the spent fuel pool, their       |
| designated storage area.  Because the IRMs were subsequently found within    |
| the RCA, this event was not initially reported.  On subsequent review        |
| associated with closing out corrective action associated with the event,     |
| it has been found that the original determination that the IRMs were not     |
| lost was not conservative, and that this event should have been reported in  |
| 1998.  This report corrects that error.  All SNM is currently accounted for  |
| at Pilgrim Station."                                                         |
|                                                                              |
| The licensee informed the NRC Resident Inspector.                            |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Fuel Cycle Facility                              |Event Number:   36253       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: ALLIED-SIGNAL INC.                   |NOTIFICATION DATE: 10/01/1999|
|   RXTYPE: URANIUM HEXAFLUORIDE PRODUCTION      |NOTIFICATION TIME: 14:11[EDT]|
| COMMENTS: UF6 CONVERSION (DRY PROCESS)         |EVENT DATE:        10/01/1999|
|                                                |EVENT TIME:        12:45[CDT]|
|                                                |LAST UPDATE DATE:  10/01/1999|
|    CITY:  METROPOLIS               REGION:  3  +-----------------------------+
|  COUNTY:  MASSAC                    STATE:  IL |PERSON          ORGANIZATION |
|LICENSE#:  SUB-526               AGREEMENT:  Y  |TONY VEGEL           R3      |
|  DOCKET:  04003392                             |JOSIE PICCONE        NMSS    |
+------------------------------------------------+JOSEPH GIITTER       IRO     |
| NRC NOTIFIED BY:  HUGH ROBERTS                 |                             |
|  HQ OPS OFFICER:  STEVE SANDIN                 |                             |
+------------------------------------------------+                             |
|EMERGENCY CLASS:          N/A                   |                             |
|10 CFR SECTION:                                 |                             |
|NINF                     INFORMATION ONLY       |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| BRUSH FIRE ON ALLIED SIGNAL PROPERTY REQUIRING OFFSITE ASSISTANCE            |
|                                                                              |
| AT APPROXIMATELY 1245CDT, A BRUSH FIRE ERUPTED ON THE NORTHEAST SIDE OF THE  |
| ALLIED SIGNAL FACILITY BETWEEN HIGHWAY 45 AND THE RAILROAD TRACKS.  THE      |
| LOCAL FIRE DEPARTMENT RESPONDED.  THE FIRE INVOLVES A SECTION OF THE         |
| PROPERTY ABOUT 0.25 MILES IN LENGTH BY 100 YARDS WIDE.  THE FIRE DEPARTMENT  |
| IS STILL ON THE SCENE AND REPORTS THAT THE FIRE IS  UNDER CONTROL.  THE      |
| LICENSEE WILL INFORM THE NRC REGION III OFFICE AS A COURTESY.                |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36254       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: INDIAN POINT             REGION:  1  |NOTIFICATION DATE: 10/01/1999|
|    UNIT:  [2] [] []                 STATE:  NY |NOTIFICATION TIME: 22:04[EDT]|
|   RXTYPE: [2] W-4-LP,[3] W-4-LP                |EVENT DATE:        10/01/1999|
+------------------------------------------------+EVENT TIME:        18:18[EDT]|
| NRC NOTIFIED BY:  VASELY                       |LAST UPDATE DATE:  10/02/1999|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |DAVID SILK           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   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|2     N          N       0        Hot Shutdown     |0        Hot Shutdown     |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| POSSIBLE PRESS RELEASE MAY BE MADE.                                          |
|                                                                              |
| THE ON DUTY SHIFT SECURITY SUPERVISOR ACCIDENTALLY DISCHARGED HIS WEAPON     |
| WHILE IN THE PROCESS OF CLEANING IT.  THE DISCHARGED ROUND PENETRATED A      |
| STORAGE CABINET AND LODGED IN A TACTICAL VEST.  THIS OCCURRED IN THEIR       |
| SECONDARY ALARM STATION INSIDE THE PROTECTED AREA.  NO ONE WAS INJURED       |
| DURING THIS INCIDENT AND  THEY ARE THINKING OF MAKING A PRESS RELEASE.       |
|                                                                              |
| THE RESIDENT INSPECTOR WAS NOTIFIED.                                         |
|                                                                              |
| * * * UPDATE ON 10/02/99 AT 0830ET BY D. CORNAX  TAKEN BY MACKINNON * * *    |
|                                                                              |
| AT THE TIME OF THE OCCURRENCE OF THIS EVENT A WACKENHUT SUPERVISOR           |
| CONDUCTING A WEAPONS INVENTORY CHECK WAS STANDING NEXT TO THE ON DUTY        |
| SECURITY SHIFT SUPERVISOR. THE SPENT SHELL CASING STRUCK THE WACKENHUT       |
| SUPERVISOR ABOVE THE LEFT EYE CAUSING A SLIGHT SCRATCH.  HE ALSO EXPERIENCED |
| SOME HEARING DISCOMFORT FROM THE NOISE.  THE WACKENHUT SUPERVISOR WAS SENT   |
| TO THE HUDSON VALLEY HOSPITAL BY THE SECURITY SHIFT SUPERVISOR AND WACKENHUT |
| PROJECT MANAGER FOR PRECAUTIONARY HEARING EXAMINATION.  HE RETURNED TO WORK  |
| AT 2050 HOURS ON 10/01/99.                                                   |
| R1DO (DAVID SILK), NMSS IAT (JOHN DAVIDSON) AND IRO (JOE GIITTER) NOTIFIED.  |
|                                                                              |
| THE NRC RESIDENT INSPECTOR WILL BE CONTACTED BY THE LICENSEE.                |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36255       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SOUTH TEXAS              REGION:  4  |NOTIFICATION DATE: 10/02/1999|
|    UNIT:  [] [2] []                 STATE:  TX |NOTIFICATION TIME: 21:03[EDT]|
|   RXTYPE: [1] W-4-LP,[2] W-4-LP                |EVENT DATE:        10/02/1999|
+------------------------------------------------+EVENT TIME:        19:05[CDT]|
| NRC NOTIFIED BY:  FRAWLEY                      |LAST UPDATE DATE:  10/02/1999|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JEFF SHACKELFORD     R4      |
|10 CFR SECTION:                                 |                             |
|DDDD 73.71               UNSPECIFIED PARAGRAPH  |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|                                                   |                          |
|2     N          Y       94       Power Operation  |94       Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| UNACCOUNTED FOR  ACCESS KEY. COMPENSATORY MEASURES WERE PUT INTO PLACE.      |
|                                                                              |
| SEE HOO LOG FOR DETAILS.                                                     |
|                                                                              |
| THE RESIDENT INSPECTOR WAS NOTIFIED.                                         |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   36256       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: PALO VERDE               REGION:  4  |NOTIFICATION DATE: 10/03/1999|
|    UNIT:  [1] [] []                 STATE:  AZ |NOTIFICATION TIME: 18:04[EDT]|
|   RXTYPE: [1] CE,[2] CE,[3] CE                 |EVENT DATE:        10/02/1999|
+------------------------------------------------+EVENT TIME:        09:53[MST]|
| NRC NOTIFIED BY:  MARKS                        |LAST UPDATE DATE:  10/03/1999|
|  HQ OPS OFFICER:  CHAUNCEY GOULD               +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          N/A                   |JEFF SHACKELFORD     R4      |
|10 CFR SECTION:                                 |                             |
|ADAS 50.72(b)(2)(i)      DEG/UNANALYZED COND    |                             |
|NLCO                     TECH SPEC LCO A/S      |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          N       0        Hot Standby      |0        Cold Shutdown    |
|                                                   |                          |
|                                                   |                          |
+------------------------------------------------------------------------------+
                                   EVENT TEXT                                   
+------------------------------------------------------------------------------+
| REACTOR COOLANT SYSTEM PRESSURE BOUNDARY LEAKAGE                             |
|                                                                              |
| On October 2,1999 at approximately 0953 MST, Palo Verde Nuclear Generating   |
| Station (PVNGS) Unit 1 discovered evidence of reactor coolant system (RCS)   |
| pressure boundary leakage. PVNGS Unit 1 was shutdown in Mode 3 in its eighth |
| refueling outage at the time of discovery and is now in Mode 5(as of 2035 on |
| 10/2/99). Current RCS temperature is approximately 102 degrees Fahrenheit    |
| and RCS pressure is approximately 31 psia.                                   |
|                                                                              |
| The leakage was discovered at two Inconel alloy 600 nozzles, one in each of  |
| the RCS hot legs. One was at the nozzle upstream of valve RCV-285 in the     |
| line to a steam generator #2 differential pressure instrument. The other was |
| at the nozzle upstream of valve RCV-277 in the line to a steam generator #1  |
| differential pressure instrument. The leakage was identified in the form of  |
| small deposits of boron accumulation around the circumference of the         |
| nozzles. PVNGS has conducted inspections of these nozzles during each        |
| refueling outage since the discovery that Inconel alloy 600 nozzles are      |
| susceptible to axial cracking when sensitized. No evidence of leakage was    |
| detected when inspected during the last outage, approximately 18 months ago. |
| Isotopic analysis of the boron accumulation detected only long-lived         |
| radionuclides, indicating that it has taken over 3 years for the reactor     |
| coolant to migrate through the nozzle weld and wall thickness.               |
|                                                                              |
| PVNGS Unit 1 Technical Specification Limiting Condition for Operation 3.4.14 |
| (RCS Operational Leakage) permits no reactor coolant system pressure         |
| boundary leakage, therefore the evidence of leakage represents serious       |
| degradation of a principal safety barrier. Operators conservatively entered  |
| LCO 3.4.14 at 0953 MST on October 2, 1999. The difference in this ENS report |
| time was due to the disparity between the isotopic analysis indicating at    |
| least 3 years age and the inspection conducted 18 months ago, causing        |
| suspicion that the boron deposits may have come from a different leak        |
| point.                                                                       |
|                                                                              |
| PVNGS is replacing the two nozzles during the outage and will continue to    |
| inspect remaining Inconel alloy 600 nozzles. No ESF actuations occurred and  |
| none were required. No structures, systems or components were inoperable     |
| that contributed to this event, particularly the fuel cladding and the       |
| containment fission product barriers. PVNGS is not in an applicable mode     |
| requiring RCS integrity. The event did not result in the release of          |
| radioactivity to the environment and did not adversely affect the safe       |
| operation of the plant or the health and safety of the public.               |
|                                                                              |
| The Resident Inspector was notified.                                         |
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