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Event Notification Report for July 29, 2003






                    U.S. Nuclear Regulatory Commission

                              Operations Center



                              Event Reports For

                           07/28/2003 - 07/29/2003



                              ** EVENT NUMBERS **



40025  40028  40029  



!!!!!!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED  !!!!!!!

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|Power Reactor                                    |Event Number:   40025       |

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| FACILITY: CALLAWAY                 REGION:  4  |NOTIFICATION DATE: 07/28/2003|

|    UNIT:  [1] [] []                 STATE:  MO |NOTIFICATION TIME: 14:05[EDT]|

|   RXTYPE: [1] W-4-LP                           |EVENT DATE:        07/28/2003|

+------------------------------------------------+EVENT TIME:        12:12[CDT]|

| NRC NOTIFIED BY:  DAVID LANTZ                  |LAST UPDATE DATE:  07/28/2003|

|  HQ OPS OFFICER:  GERRY WAIG                   +-----------------------------+

+------------------------------------------------+PERSON          ORGANIZATION |

|EMERGENCY CLASS:          NON EMERGENCY         |MARK SHAFFER         R4      |

|10 CFR SECTION:                                 |ROBERTA WARREN       DNS     |

|DDDD 73.71(b)(1)         SAFEGUARDS REPORTS     |                             |

|                                                |                             |

|                                                |                             |

|                                                |                             |

+-----+----------+-------+--------+-----------------+--------+-----------------+

|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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| SAFEGUARDS 1-HOUR REPORT                                                     |

|                                                                              |

| The licensee discovered a vulnerability in a safeguard system that could     |

| allow access to a controlled access area for which compensatory measures     |

| have not been employed. The licensee will notify the NRC Resident Inspector. |

| Contact the Headquarters Operations Officer for additional details.          |

|                                                                              |

| * * * RETRACTION ON 7/28/03 AT 1743 EDT FROM DAVID LANTZ TO GERRY WAIG * *   |

| *                                                                            |

|                                                                              |

| "Consistent with guidance outlined in Generic Letter 91-03, Reporting of     |

| Safeguards Events, this call [event] is being retracted." The licensee has   |

| notified the NRC Resident Inspector.                                         |

|                                                                              |

| Notified R4DO (Mark Shaffer), TAT (Roberta Warren).                          |

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+------------------------------------------------------------------------------+

|Other Nuclear Material                           |Event Number:   40028       |

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| REP ORG:  MFG, INC.                            |NOTIFICATION DATE: 07/28/2003|

|LICENSEE:  MFG, INC.                            |NOTIFICATION TIME: 18:34[EDT]|

|    CITY:  COEUR d'ALENE            REGION:  4  |EVENT DATE:        07/28/2003|

|  COUNTY:                            STATE:  ID |EVENT TIME:        15:00[MDT]|

|LICENSE#:                        AGREEMENT:  N  |LAST UPDATE DATE:  07/28/2003|

|  DOCKET:                                       |+----------------------------+

|                                                |PERSON          ORGANIZATION |

|                                                |MARK SHAFFER         R4      |

|                                                |JOHN GREEVES         NMSS    |

+------------------------------------------------+                             |

| NRC NOTIFIED BY:  KEVIN YRJANA                 |                             |

|  HQ OPS OFFICER:  STEVE SANDIN                 |                             |

+------------------------------------------------+                             |

|EMERGENCY CLASS:          NON EMERGENCY         |                             |

|10 CFR SECTION:                                 |                             |

|NINF                     INFORMATION ONLY       |                             |

|                                                |                             |

|                                                |                             |

|                                                |                             |

|                                                |                             |

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                                   EVENT TEXT                                   

+------------------------------------------------------------------------------+

| POTENTIALLY DAMAGED TROXLER MOISTURE DENSITY GAUGE                           |

|                                                                              |

| At approximately 1500 PDT on 7/28/03 a rubber tire compactor ran over a      |

| Troxler Model 3440, Serial No. 31827, gauge containing an 8 millicurie       |

| Cs-137 and a 40 millicurie Am-241:Be source.  The sources were in the safe   |

| position at the time the incident occurred.  The licensee performed rad      |

| surveys and did not observe any abnormal rad readings.  The manufacturer was |

| contacted and requested a photograph to evaluate any potential damage.       |

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+------------------------------------------------------------------------------+

|Power Reactor                                    |Event Number:   40029       |

+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+

| FACILITY: PALO VERDE               REGION:  4  |NOTIFICATION DATE: 07/29/2003|

|    UNIT:  [] [] [3]                 STATE:  AZ |NOTIFICATION TIME: 01:42[EDT]|

|   RXTYPE: [1] CE,[2] CE,[3] CE                 |EVENT DATE:        07/28/2003|

+------------------------------------------------+EVENT TIME:        18:54[MST]|

| NRC NOTIFIED BY:  Dan Marks                    |LAST UPDATE DATE:  07/29/2003|

|  HQ OPS OFFICER:  ERIC THOMAS                  +-----------------------------+

+------------------------------------------------+PERSON          ORGANIZATION |

|EMERGENCY CLASS:          NON EMERGENCY         |MARK SHAFFER         R4      |

|10 CFR SECTION:                                 |                             |

|ARPS 50.72(b)(2)(iv)(B)  RPS ACTUATION - CRITICA|                             |

|AESF 50.72(b)(3)(iv)(A)  VALID SPECIF SYS ACTUAT|                             |

|                                                |                             |

|                                                |                             |

+-----+----------+-------+--------+-----------------+--------+-----------------+

|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |

+-----+----------+-------+--------+-----------------+--------+-----------------+

|                                                   |                          |

|                                                   |                          |

|3     A/R        Y       98       Power Operation  |0        Hot Standby      |

+------------------------------------------------------------------------------+

                                   EVENT TEXT                                   

+------------------------------------------------------------------------------+

| RPS ACTUATION, SPECIFIED SYSTEM ACTUATION                                    |

|                                                                              |

| "On July 28, 2003, at approximately 18:54 Mountain Standard Time (MST) Palo  |

| Verde Unit 3 experienced an automatic reactor trip on low DNBR [Departure    |

| from Nucleate Boiling Ratio] from approximately 98% rated thermal power due  |

| to reduced reactor coolant system flow when the main turbine tripped during  |

| a grid perturbation. Unit 3 was at normal temperature and pressure prior to  |

| the trip. All CEAs inserted fully into the reactor core. This was an         |

| uncomplicated reactor trip. No emergency classification was required per the |

| Emergency Plan. No automatic ESF actuations occurred and none were required. |

| The operators initiated a manual Main Steam Isolation System (MSIS)          |

| actuation, in accordance with the emergency operations procedures in         |

| response to the loss of forced reactor coolant system flow. Safety related   |

| buses remained energized during and following the reactor trip. The          |

| Emergency Diesel Generators did not start and were not required. The offsite |

| power grid is stable. No significant LCOs have been entered as a result of   |

| this event. No major equipment was inoperable prior to the event that        |

| contributed to the event.                                                    |

|                                                                              |

| "Unit 3 is stabilizing at approximately 520 degrees F and 2150 psia pressure |

| in Mode 3. The reactor coolant system remains in natural circulation with    |

| heat removal via the atmospheric dump valves and feedwater from the          |

| essential auxiliary feedwater system. The event did not result in any        |

| challenges to fission product barriers and there were no adverse safety      |

| consequences as a result of this event. The event did not adversely affect   |

| the safe operation of the plant or the health and safety of the public.      |

|                                                                              |

| "Palo Verde Units 1 and 2 also observed the grid perturbation, but are       |

| continuing to operate in Mode 1 at approximately 98% rated thermal power.    |

| The cause of the perturbation is believed to be associated with switching in |

| a nearby Hassayampa yard by Salt River Project. A fossil power plant in the  |

| vicinity also tripped off line during the grid perturbation event.           |

|                                                                              |

| "The [NRC] Senior Resident Inspector was informed of the Unit 3 reactor trip |

| and this notification. The Senior Resident Inspector has arrived on-site to  |

| observe response to the reactor trip."                                       |

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