The NRC is modernizing nrc.gov with an updated design and improved navigation to enhance usability. We are committed to a smooth transition and will work to minimize any disruption. The site may be briefly unavailable at times during launch. Thank you for your patience.
Event Notification Report for January 25, 2000
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
01/24/2000 - 01/25/2000
** EVENT NUMBERS **
36610 36612 36618 36619 36620
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 36610 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: POINT BEACH REGION: 3 |NOTIFICATION DATE: 01/21/2000|
| UNIT: [1] [] [] STATE: WI |NOTIFICATION TIME: 04:21[EST]|
| RXTYPE: [1] W-2-LP,[2] W-2-LP |EVENT DATE: 01/21/2000|
+------------------------------------------------+EVENT TIME: 02:39[CST]|
| NRC NOTIFIED BY: JOHN SELL |LAST UPDATE DATE: 01/24/2000|
| HQ OPS OFFICER: STEVE SANDIN +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |DAVID HILLS R3 |
|10 CFR SECTION: | |
|ASHU 50.72(b)(1)(i)(A) PLANT S/D REQD BY TS | |
|ARPS 50.72(b)(2)(ii) RPS ACTUATION | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 M/R Y 40 Power Operation |0 Hot Standby |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| UNIT 1 MANUALLY TRIPPED FROM 40% POWER DUE TO A DECREASING FOREBAY LEVEL |
| |
| "UNIT 1 WAS MANUALLY TRIPPED FROM 40% POWER AFTER AN ANTICIPATORY POWER |
| REDUCTION AT 0239 CST DUE TO DECREASING LEVEL IN THE CIRC. WATER INLET |
| FOREBAY. DECREASING LEVEL WAS APPARENTLY DUE TO ICING OF THE INTAKE |
| STRUCTURE. UNIT 1 CIRC. WATER SYSTEM HAS BEEN SECURED AND FOREBAY LEVEL HAS |
| INCREASED. THE UNIT 1 CIRC. WATER SYSTEM WAS SECURED TO MAINTAIN |
| OPERABILITY OF THE SERVICE WATER SYSTEM. UNIT 2 REMAINS AT 100% POWER AND |
| IS STABLE." |
| |
| FOREBAY LEVEL HAD DECREASED TO -11 FT FROM THE NORMAL OPERATING -8 FT. THE |
| -11 FT CORRESPONDS TO THE MINIMUM DESIGN LIMIT FOR THE SERVICE WATER SYSTEM. |
| CURRENTLY, LEVEL IS -6 FT 4 INCHES. STEAM GENERATORS USING THE ATMOSPHERIC |
| DUMPS ARE PROVIDING THE HEAT SINK FOR DECAY HEAT REMOVAL SINCE THE CONDENSER |
| IS NOT IN SERVICE. ALL CONTROL RODS FULLY INSERTED FOLLOWING THE MANUAL |
| TRIP. |
| |
| THE LICENSEE WILL INFORM THE NRC RESIDENT INSPECTOR. |
| |
| * * * UPDATE ON 01/21/00 @ 1339 EST BY KRAUSE TO GOULD * * * |
| |
| THE LICENSEE UPDATED THIS EVENT BY ALSO CLASSIFYING IT AS A RPS ACTUATION |
| DUE TO THE MANUAL REACTOR TRIP. |
| |
| THE NRC RESIDENT INSPECTOR WILL BE NOTIFIED. |
| |
| THE R3DO (HILLS) WAS NOTIFIED. |
| |
| * * * UPDATE ON 01/24/00 @ 1201 EST BY KRAUSE TO JONES * * * |
| |
| The licensee performed an engineering evaluation that demonstrated that at |
| no time was the design basis water level for service water exceeded. The |
| report of the Tech Spec required shutdown is retracted, but the report of |
| the RPS activation stands as previously updated. |
| |
| The licensee notified the NRC Resident Inspector. |
| |
| The R3DO (Monte Phillips) has been notified. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 36612 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: OYSTER CREEK REGION: 1 |NOTIFICATION DATE: 01/21/2000|
| UNIT: [1] [] [] STATE: NJ |NOTIFICATION TIME: 11:17[EST]|
| RXTYPE: [1] GE-2 |EVENT DATE: 01/21/2000|
+------------------------------------------------+EVENT TIME: 10:48[EST]|
| NRC NOTIFIED BY: GLENN HUTTON |LAST UPDATE DATE: 01/24/2000|
| HQ OPS OFFICER: FANGIE JONES +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |FELICIA HINSON R1 |
|10 CFR SECTION: | |
|ARPS 50.72(b)(2)(ii) RPS ACTUATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 M/R Y 65 Power Operation |0 Hot Shutdown |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| MANUAL REACTOR SCRAM PER PROCEDURE FOLLOWING TRIP OF ALL RECIRCULATION |
| PUMPS |
| |
| During the performance of a surveillance test, with a half scram signal |
| inserted, a spurious trip signal from the other system initiated a trip of |
| all the reactor coolant system recirculation pumps. The operators manually |
| scrammed the reactor per procedure, all rods fully inserted. Heat removal |
| is via the main condenser with main feedwater feeding the reactor. All |
| systems functioned as designed and the plant is proceeding to cold shutdown. |
| A trip review will be performed by the licensee. |
| |
| The licensee notified the NRC Resident Inspector. |
| |
| * * * UPDATE AT 1943 EST ON 01/24/00 BY FRANK CIGANIK TO FANGIE JONES * * * |
| |
| |
| On 01/21/00, the licensee inserted a manual scram in accordance with station |
| procedures in response to a trip of all the reactor recirculation pumps. |
| The trip of all the pumps was due to an error in the performance of the |
| ongoing surveillance test. |
| |
| "During the performance of an instrument logic surveillance test on the |
| isolation condenser actuation logic which also inserts trip signals into the |
| recirculation pump trip logic, the reactor recirculation pumps tripped. |
| After testing the first instrument, the trip signal associated with the |
| isolation condensers were reset; however, the recirc pump trip logic was not |
| properly reset before proceeding to the second instrument. When a test |
| signal was introduced on this instrument, the reactor recirculation pumps |
| tripped as designed. In response to the pump trip, the operators manually |
| scrammed the reactor. The plant is currently in cold shutdown. A trip |
| review has been performed. Oyster Creek plans to take advantage of this |
| shutdown to perform some other maintenance activities." |
| |
| The original report should have read "half trip" rather than "half scram" |
| referring to the trip logic of the reactor recirculation pumps; this was |
| entered wrong the first time. |
| |
| The licensee notified the NRC Resident Inspector. The R1DO (John Rogge) has |
| been notified. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 36618 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: TURKEY POINT REGION: 2 |NOTIFICATION DATE: 01/24/2000|
| UNIT: [] [4] [] STATE: FL |NOTIFICATION TIME: 12:50[EST]|
| RXTYPE: [3] W-3-LP,[4] W-3-LP |EVENT DATE: 01/24/2000|
+------------------------------------------------+EVENT TIME: 11:42[EST]|
| NRC NOTIFIED BY: DAVE MORRIS |LAST UPDATE DATE: 01/24/2000|
| HQ OPS OFFICER: FANGIE JONES +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |KERRY LANDIS R2 |
|10 CFR SECTION: | |
|ARPS 50.72(b)(2)(ii) RPS ACTUATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
| | |
|4 M/R Y 95 Power Operation |0 Hot Standby |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| MANUAL REACTOR TRIP DUE TO FEEDWATER OSCILLATIONS |
| |
| The licensee had reduced power to 95% to examine the '4A' steam generator |
| feedwater regulating valve due to feedwater oscillations. A preliminary |
| determination of valve internal problems versus control problems was made. |
| The licensee was ready to continue the down power to shutdown to repair the |
| feedwater regulating valve, when a manual trip became necessary due to the |
| feedwater oscillations on '4A' steam generator. |
| |
| All systems functioned as designed, all rods fully inserted, no secondary |
| safety valves lifted, and the plant is stable in Mode 3. Heat removal is |
| via the atmospheric steam dumps, normal procedure with no tube leaks, and |
| feedwater is via the standby feedwater system. The plant will remain shut |
| down until repairs to the feedwater regulating valve are complete. |
| |
| The licensee notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 36619 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: MONTICELLO REGION: 3 |NOTIFICATION DATE: 01/24/2000|
| UNIT: [1] [] [] STATE: MN |NOTIFICATION TIME: 17:59[EST]|
| RXTYPE: [1] GE-3 |EVENT DATE: 01/24/2000|
+------------------------------------------------+EVENT TIME: 15:30[CST]|
| NRC NOTIFIED BY: STEVE GORTON |LAST UPDATE DATE: 01/24/2000|
| HQ OPS OFFICER: FANGIE JONES +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |MONTE PHILLIPS R3 |
|10 CFR SECTION: |JAMES CREED IAT |
|APRE 50.72(b)(2)(vi) OFFSITE NOTIFICATION | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR| INIT RX MODE |CURR PWR| CURR RX MODE |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1 N N 0 Refueling |0 Refueling |
| | |
| | |
+------------------------------------------------------------------------------+
EVENT TEXT
+------------------------------------------------------------------------------+
| COURTESY NOTIFICATION OF LOCAL AND STATE LAW ENFORCEMENT AGENCIES |
| |
| The licensee notified local and state law enforcement agencies as a courtesy |
| concerning an investigation. This prompted notification of the NRC under |
| 10CFR50.72(b)(2)(vi), "Offsite Notification." |
| |
| The licensee notified the NRC Resident Inspector. |
| |
| Refer to the HOO log for additional details. |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 36620 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: SUMMER REGION: 2 |NOTIFICATION DATE: 01/24/2000|
| UNIT: [1] [] [] STATE: SC |NOTIFICATION TIME: 22:37[EST]|
| RXTYPE: [1] W-3-LP |EVENT DATE: 01/24/2000|
+------------------------------------------------+EVENT TIME: 22:15[EST]|
| NRC NOTIFIED BY: HENRY MANOS |LAST UPDATE DATE: 01/24/2000|
| HQ OPS OFFICER: FANGIE JONES +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |KERRY LANDIS R2 |
|10 CFR SECTION: | |
|AENS 50.72(b)(1)(v) ENS INOPERABLE | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
+------------------------------------------------------------------------------+
| MORE THAN 25% OF THE OFFSITE WARNING SIRENS LOST DUE TO ICE STORMS |
| |
| The licensee reported the loss of more than 25% of the offsite warning |
| sirens due to ice storms passing through the local area. The licensee will |
| be contacting the power suppliers of the sirens to take action to recover |
| them. |
| |
| The licensee notified the NRC Resident Inspector. |
+------------------------------------------------------------------------------+
Page Last Reviewed/Updated Wednesday, March 24, 2021
Page Last Reviewed/Updated Wednesday, March 24, 2021