Event Notification Report for July 1, 2002
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
06/28/2002 - 07/01/2002
** EVENT NUMBERS **
38953 39019 39024 39025 39026 39027 39028 39029 39030 39031 39032
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 38953 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: LASALLE REGION: 3 |NOTIFICATION DATE: 05/31/2002|
| UNIT: [] [2] [] STATE: IL |NOTIFICATION TIME: 01:08[EDT]|
| RXTYPE: [1] GE-5,[2] GE-5 |EVENT DATE: 05/30/2002|
+------------------------------------------------+EVENT TIME: 20:30[CDT]|
| NRC NOTIFIED BY: JOHN B. REIS, JR. |LAST UPDATE DATE: 05/31/2002|
| HQ OPS OFFICER: STEVE SANDIN +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |THOMAS KOZAK R3 |
|10 CFR SECTION: | |
|AIND 50.72(b)(3)(v)(D) ACCIDENT MITIGATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|2 N Y 100 Power Operation |100 Power Operation |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| HPCS DECLARED INOPERABLE FOLLOWING FAILURE OF ASSOCIATED EDG DURING
POST |
| MAINT TESTING |
| |
| "This report is being made pursuant to 10 CFR 50.72(b)(3)(v)(D), Event or |
| Condition That Could Have Prevented Fulfillment of a Safety Function needed |
| to Mitigate the Consequences of an Accident. During a post maintenance test |
| run of the 2B Diesel Generator following a planned maintenance window, the |
| Diesel Generator reactive load (VARs) was identified to be extremely erratic |
| as the Diesel Generator was loaded. At 20:30 Central Daylight Savings Time, |
| it was discovered that a potentiometer in the voltage regulating circuit had |
| failed. This potentiometer was not worked on during the planned maintenance |
| window. Because this component failure could have prevented the Diesel |
| Generator from performing its design function, and because the 2B Diesel |
| generator is the emergency power supply for the High Pressure Core Spray |
| System (HPCS), which is a single train safety system, it has been determined |
| that this failure is reportable as an 8 hour ENS notification. The failed |
| component has currently been replaced and further testing of the Diesel |
| Generator is in progress. The required actions of Technical Specification |
| 3.5.1 were entered when the system was made Inoperable for the maintenance |
| window, and are continuing to be followed for the Inoperable HPCS system |
| until the Diesel Generator is restored to Operable status." |
| |
| The licensee anticipates completing testing by the end of dayshift on |
| 5/31/02 and has informed the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|General Information or Other |Event Number: 39019 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG: TENNESSEE DIV OF RAD HEALTH |NOTIFICATION DATE: 06/26/2002|
|LICENSEE: TENNESSEE DEPT OF TRANSPORTATION |NOTIFICATION TIME:
10:20[EDT]|
| CITY: CORRYTON REGION: 2 |EVENT DATE: 06/25/2002|
| COUNTY: KNOX STATE: TN |EVENT TIME: 21:00[EDT]|
|LICENSE#: R-19017 AGREEMENT: Y |LAST UPDATE DATE: 06/26/2002|
| DOCKET: |+----------------------------+
| |PERSON ORGANIZATION |
| |LEONARD WERT R2 |
| |FRED BROWN NMSS |
+------------------------------------------------+ |
| NRC NOTIFIED BY: DEBRA SHULTS | |
| HQ OPS OFFICER: FANGIE JONES | |
+------------------------------------------------+ |
|EMERGENCY CLASS: NON EMERGENCY | |
|10 CFR SECTION: | |
|NAGR AGREEMENT STATE | |
| | |
| | |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| AGREEMENT STATE REPORT - STOLEN TROXLER GAUGE |
| |
| The following is taken from a faxed report: |
| |
| Event Report ID No.: TN-02-083 |
| |
| License No: TN-02-083 |
| |
| Licensee: Tennessee Division of Radiological Health |
| |
| Event date and time: June 25, 2002, 2100 EDT |
| |
| Event location: R-19017 |
| |
| Event type: Stolen moisture density gauge |
| |
| Notifications: USNRC Region II, Knox County Sheriffs Department |
| |
| Event description: Tennessee Department of Transportation, Region 1, called |
| the Division at 0818 CDT to report a stolen moisture density gauge. The |
| gauge is a Troxler model 3430, serial number 23117 containing 8 millicuries |
| of Cesium-137, serial number 75-4928 and 40 millicuries of Am-241:Be, serial |
| number 47-18934. The gauge was inside a white Ford Aerostar van. License |
| number S4-PE83, owned by the State. The van was parked at the operator's |
| home on McGinnis Road in Corryton, TN. |
| |
| Media attention: None at this time. A press release will be issued by TDEC. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39024 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: INDIAN POINT REGION: 1 |NOTIFICATION DATE: 06/27/2002|
| UNIT: [2] [3] [] STATE: NY |NOTIFICATION TIME: 15:20[EDT]|
| RXTYPE: [2] W-4-LP,[3] W-4-LP |EVENT DATE: 06/27/2002|
+------------------------------------------------+EVENT TIME: 12:10[EDT]|
| NRC NOTIFIED BY: MARK LEONE |LAST UPDATE DATE: 06/28/2002|
| HQ OPS OFFICER: RICH LAURA +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |MICHAEL MODES R1 |
|10 CFR SECTION: |CHRIS GRIMES NRR |
|ACOM 50.72(b)(3)(xiii) LOSS COMM/ASMT/RESPONSE| |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|2 N Y 100 Power Operation |100 Power Operation |
|3 N Y 100 Power Operation |100 Power Operation |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| OPERABLE EP SIRENS BELOW MINIMUM NUMBER AT INDIAN POINT |
| |
| Two counties located in the emergency planning zone went below the minimum |
| number of operable EP sirens. Westchester County had 12 sirens inoperable |
| out of a total of 77 sirens. Orange County had approximately 8 sirens not |
| working out of a total of 16. The minimum number operable criteria is 90% |
| operating out of the total number in each county. The licensee attributed |
| the inoperable sirens due to a storm that passed through the area yesterday. |
| Compensatory measures were in place including route alerting. |
| |
| The NRC resident inspector was notified. |
| |
| *****UPDATE LEONE TO LAURA ON 6/28/02 AT 13:48***** |
| |
| The licensee reported that Westchester County had greater than 90% of their |
| sirens working by 18:20 on 6/27/02. All EP sirens in the 4 counties within |
| the EPZ were working as of 11:28 on 6/28/02. |
| |
| The NRC resident inspector was notified. Notified R1DO (M. Modes). |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39025 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: FERMI REGION: 3 |NOTIFICATION DATE: 06/28/2002|
| UNIT: [2] [] [] STATE: MI |NOTIFICATION TIME: 09:47[EDT]|
| RXTYPE: [2] GE-4 |EVENT DATE: 06/28/2002|
+------------------------------------------------+EVENT TIME: 01:52[EDT]|
| NRC NOTIFIED BY: HARRY GILES |LAST UPDATE DATE: 06/28/2002|
| HQ OPS OFFICER: GERRY WAIG +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |CHRISTINE LIPA R3 |
|10 CFR SECTION: | |
|AIND 50.72(b)(3)(v)(D) ACCIDENT MITIGATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|2 N Y 100 Power Operation |100 Power Operation |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| POTENTIAL LOSS OF CONTROL CENTER HVAC ACCIDENT MITIGATION CAPABILITY
DURING |
| MAINTENANCE ACTIVITIES |
| |
| " Control Center HVAC access panel opened at 2152 hours on 6-27-02, |
| unfiltered air in-leakage potentially allowed into the operating division of |
| [the] Control Center HVAC , potentially affecting post accident dose |
| assessment per 10 CFR 50.72 (b) (3)(v)(D). |
| |
| " Control Center access panel closed at 2222 hours on 6-27-02, maintenance |
| activities halted on CCHVAC. |
| |
| "Tech Spec 3.0.3 entry recognized at 0152 hours 6-28-02. Tech Spec exited |
| within 30 minutes, no actions taken to commence plant shutdown." |
| |
| The licensee notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Other Nuclear Material |Event Number: 39026 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| REP ORG: US ARMY |NOTIFICATION DATE: 06/28/2002|
|LICENSEE: US ARMY |NOTIFICATION TIME: 10:20[EDT]|
| CITY: ABERDEEN REGION: 1 |EVENT DATE: 06/26/2002|
| COUNTY: STATE: MD |EVENT TIME: [EDT]|
|LICENSE#: 19-30563-01 AGREEMENT: Y |LAST UPDATE DATE: 06/28/2002|
| DOCKET: |+----------------------------+
| |PERSON ORGANIZATION |
| |MICHAEL MODES R1 |
| |JOHN GREEVES NMSS |
+------------------------------------------------+ |
| NRC NOTIFIED BY: JOYCE KUYKENDALL | |
| HQ OPS OFFICER: FANGIE JONES | |
+------------------------------------------------+ |
|EMERGENCY CLASS: NON EMERGENCY | |
|10 CFR SECTION: | |
|BLO1 20.2201(a)(1)(i) LOST/STOLEN LNM>1000X | |
| | |
| | |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| LOSS OF A CHEMICAL AGENT DETECTOR IN KOREA |
| |
| A chemical agent detector (model M43A1) containing 300 microcuries was lost |
| by an Army unit in Korea. Aberdeen was notified on 06/26/02 and there are |
| no further details at this time. The unit will investigate and send in a |
| report to Aberdeen. The detector posses little or no threat to the public. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39027 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: HOPE CREEK REGION: 1 |NOTIFICATION DATE: 06/28/2002|
| UNIT: [1] [] [] STATE: NJ |NOTIFICATION TIME: 13:43[EDT]|
| RXTYPE: [1] GE-4 |EVENT DATE: 06/27/2002|
+------------------------------------------------+EVENT TIME: 18:00[EDT]|
| NRC NOTIFIED BY: RITA BRADDICK |LAST UPDATE DATE: 06/28/2002|
| HQ OPS OFFICER: GERRY WAIG +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |MICHAEL MODES R1 |
|10 CFR SECTION: | |
|NONR OTHER UNSPEC REQMNT | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N Y 24 Power Operation |24 Power Operation |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| LICENSED THERMAL POWER LIMIT EXCEEDED AT HOPE CREEK |
| |
| The following is taken from a facsimile sent by the licensee: |
| |
| "On May 26, 2002, an equipment failure related to the feedwater crossflow |
| correction factor resulted in the Hope Creek Generating Station operating |
| above its' Licensed Power Limit of 3339 megawatts thermal for a period of |
| approximately 8 hours. Upon identification of an anomalous indication |
| associated with the crossflow indication, operators conservatively lowered |
| Reactor power to a value below the station's licensed limit pending |
| evaluation of the condition. Subsequent detailed evaluation has since |
| confirmed that a malfunction of the crossflow instrumentation correction |
| factor caused an overpower condition. The event date and time coincide with |
| the completion of the evaluation. Contrary to regulatory guidance for power |
| maintenance, the facility operated at approximately 100.25% for greater than |
| 2 hours. However, at no time did the station power level exceed 100.47%, nor |
| was the shift average power level limit exceeded. This 24 hour report is |
| being made for violation of the requirements contained in the Operating |
| License (Hope Creek Operating License Number NPF-57, section 2.F, |
| specifically Section 2.C (1)-exceeding the maximum power level of 3339 |
| megawatts thermal.[)]" |
| |
| The licensee notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39028 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: COOK REGION: 3 |NOTIFICATION DATE: 06/28/2002|
| UNIT: [1] [2] [] STATE: MI |NOTIFICATION TIME: 21:12[EDT]|
| RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 06/28/2002|
+------------------------------------------------+EVENT TIME: 18:30[EDT]|
| NRC NOTIFIED BY: BUD HINCKLEY |LAST UPDATE DATE: 06/28/2002|
| HQ OPS OFFICER: RICH LAURA +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: |ANNE MARIE STONE R3 |
|10 CFR SECTION: | |
|APRE 50.72(b)(2)(xi) OFFSITE NOTIFICATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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 |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| OFFSITE NOTIFICATION OF OIL SPILL AT DC COOK DURING SWITCHYARD
MAINTENANCE |
| |
| "At 18:30 EDT on 6/28/2002, while transporting the 1-TR-N1-CT2, Unit 1 |
| Palisades to 345 KV Bus #1 Air Blast Breaker 52-Ni Phase #2 Current |
| Transformer, the insulator dropped off the forklift and cracked, causing an |
| oil leak of approximately 25 gallons onto the ground. The Michigan |
| Department of Environmental Quality Pollution Emergency Alert System was |
| notified at 20:15 on 6/28/02, requiring 4-Hr Non-Emergency 10 CFR 50.72 |
| (b)(2)(xi) event notification to be made. There is no impact to plant |
| personnel or operating equipment. A permit has been generated to allow |
| removal of the affected soil for proper disposals" |
| |
| The licensee was performing maintenance in the switchyard at the time. The |
| current transformer was the old one which was replaced. The oil spill did |
| not directly impact the ongoing maintenance activity. |
| |
| The NRC resident inspector was notified. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39029 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 06/29/2002|
| UNIT: [1] [] [] STATE: NJ |NOTIFICATION TIME: 05:51[EDT]|
| RXTYPE: [1] GE-2 |EVENT DATE: 06/29/2002|
+------------------------------------------------+EVENT TIME: 02:00[EDT]|
| NRC NOTIFIED BY: JAMES VOUGLITOIS |LAST UPDATE DATE: 06/29/2002|
| HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |MICHAEL MODES R1 |
|10 CFR SECTION: | |
|APRE 50.72(b)(2)(xi) OFFSITE NOTIFICATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
+------------------------------------------------------------------------------+
| OFFSITE NOTIFICATION |
| |
| KEMP'S RIDLEY SEA TURTLE CAUGHT AND GIVEN TO THE MARINE MAMMAL
STRANDING |
| CENTER. OFFSITE NOTIFICATION MADE TO THE NATIONAL MARINE FISHERY
SERVICES. |
| |
| THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED OF THIS EVENT BY THE
LICENSEE. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39030 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: BROWNS FERRY REGION: 2 |NOTIFICATION DATE: 06/29/2002|
| UNIT: [1] [2] [3] STATE: AL |NOTIFICATION TIME: 12:44[EDT]|
| RXTYPE: [1] GE-4,[2] GE-4,[3] GE-4 |EVENT DATE: 06/29/2002|
+------------------------------------------------+EVENT TIME: 08:52[CDT]|
| NRC NOTIFIED BY: DONALD SMITH |LAST UPDATE DATE: 06/29/2002|
| HQ OPS OFFICER: GERRY WAIG +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |LEONARD WERT R2 |
|10 CFR SECTION: | |
|APRE 50.72(b)(2)(xi) OFFSITE NOTIFICATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N N 0 Refueling |0 Refueling |
|2 N Y 100 Power Operation |100 Power Operation |
|3 N Y 100 Power Operation |100 Power Operation |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| BROWNS FERRY SPURIOUS ACTUATION OF OFFSITE EMERGENCY NOTIFICATION
SIRENS |
| |
| "At 0852 on 06/29/02, the Operations Duty Specialist (ODS) notified the |
| Browns Ferry Shift Manager of a spurious actuation of the Off Site Emergency |
| Notification Sirens for a duration of less than 3 minutes in Lawrence |
| County, Alabama. A TVA news release is not planned at this time, however, |
| the event is being reported due to inquires from county representatives to |
| the TVA ODS regarding the siren activation. A review of the cause of the |
| actuation is in progress. |
| |
| "This event is reportable per 10CFR50.72 (b)(2)(xi) as 'Any event or |
| situation, related to the health and safety of the public or onsite |
| personnel, or protection of the environment for which a news release is |
| planned or notification to other government agencies has been or will be |
| made. Such an event may include an onsite fatality or inadvertent release of |
| radioactive contaminated material'." |
| |
| The licensee notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39031 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 06/29/2002|
| UNIT: [1] [] [] STATE: TX |NOTIFICATION TIME: 16:43[EDT]|
| RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 06/29/2002|
+------------------------------------------------+EVENT TIME: 14:38[CDT]|
| NRC NOTIFIED BY: CRAIG JANAK |LAST UPDATE DATE: 06/29/2002|
| HQ OPS OFFICER: GERRY WAIG +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |WILLIAM JOHNSON R4 |
|10 CFR SECTION: | |
|NINF INFORMATION ONLY | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
+------------------------------------------------------------------------------+
| SOUTH TEXAS NUCLEAR PROJECT SPURIOUS ACTUATION OF OFFSITE NOTIFICATION
|
| SIREN |
| |
| "At 14:38 on 6/29/02, received notification that a South Texas Nuclear |
| Project Offsite Emergency Notification siren located in the Tres Palacios |
| Oaks subdivision was spuriously going off over the last 4 hours. This |
| notification was from a resident in the subdivision. This siren is going off |
| while thunderstorms are moving through the area. The Matagorda County |
| Sheriff's Department was informed by site personnel of these spurious alarms |
| and personnel have been dispatched to resolve the issue with the siren." |
| |
| The licensee has notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
.
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 39032 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SAN ONOFRE REGION: 4 |NOTIFICATION DATE: 07/01/2002|
| UNIT: [] [2] [] STATE: CA |NOTIFICATION TIME: 00:33[EDT]|
| RXTYPE: [1] W-3-LP,[2] CE,[3] CE |EVENT DATE: 06/30/2002|
+------------------------------------------------+EVENT TIME: 18:58[PDT]|
| NRC NOTIFIED BY: CONOSCENTI |LAST UPDATE DATE: 07/01/2002|
| HQ OPS OFFICER: JOHN MacKINNON +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: NON EMERGENCY |WILLIAM JOHNSON R4 |
|10 CFR SECTION: | |
|ARPS 50.72(b)(2)(iv)(B) RPS ACTUATION - CRITICA| |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE
|
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|2 A/R Y 18 Power Operation |0 Hot Standby |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| AUTOMATIC REACTOR TRIP ON LOW STEAM GENERATOR PRESSURE DUE TO TWO
ADDITIONAL |
| STEAM DUMP VALVES FULLY OPENING DURING STARTUP. |
| |
| System Affected |
| "Primary: Rx Trip, CEA, RCP's stayed on, PLCS" |
| "Secondary: SBCS Open, MSIV's, ADV, MFW, AFW" |
| |
| Actuations and Their Initiating Signals |
| "MSIS A & B @ 741 PSIA. Lowest Seen = MSIS setpoint" |
| |
| Causes |
| "Prelim: 4 SBCS All Fast Open . . . " |
| |
| Effect Of Event Plant |
| "Low S/G Pressure Rx Trip, Turbine Trip, MSIS isolated secondary. CVCS |
| remained in service. MSIS verified and rest, then AFW initiated. (Did not |
| want cooldown from steam-driven AFW Pp. Adequate S/G water level maintained |
| throughout. Approx. 50% NR)." |
| |
| Actions Taken or Planned |
| "EOI's: S023-12-1 (SPTA's), S023-12-2 (RTR), OI: S023-S-1.3.1 S0123-0-14 4 |
| Hour" |
| "E-PLAN Review P S/G" [decreased]) |
| |
| The licensee was going to bring the main turbine on line which was rolling |
| at 1800 rpm. Two steam dump bypass valves were open dumping steam to the |
| main condenser to help maintain reactor power at 18%. Unexpectedly two |
| additional steam dump bypass valves opened. When these two additional steam |
| dump bypass valves opened the first two open valves initial started to close |
| then they went full open. Steam generator pressure decreased to the low |
| steam generator pressure setpoint of 741 psia at which point an automatic |
| reactor trip plus a main steam isolation signal (MSIS) was generated, main |
| steam isolation valves (MSIV's) closed. All rods fully inserted into the |
| core. Atmospheric steam dump valves were used to maintained proper reactor |
| coolant system temperature. The licensee said that they did not have any |
| leaking steam generator tubes. Proper steam generator water inventory was |
| verified at which time the MSIS signal was reset, then one Motor Driven |
| Auxiliary Feedwater Pump was manually initiated to maintain proper steam |
| generator water level. Main feedwater system isolated due to the MSIS |
| signal and the reactor trip. All emergency core cooling systems, emergency |
| diesel generators are fully operable if needed. The electrical grid is |
| stable. The licensee is investigating why the two additional steam dump |
| bypass valves opened. |
| |
| The NRC Resident Inspector was notified of this event by the licensee. |
+------------------------------------------------------------------------------+
.
Page Last Reviewed/Updated Thursday, March 25, 2021
Page Last Reviewed/Updated Thursday, March 25, 2021