Event Notification Report for March 17, 1999
U.S. Nuclear Regulatory Commission
Operations Center
Event Reports For
03/16/1999 - 03/17/1999
** EVENT NUMBERS **
35469 35475
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|Power Reactor |Event Number: 35469 |
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| FACILITY: SOUTH TEXAS REGION: 4 |NOTIFICATION DATE: 03/12/1999|
| UNIT: [] [2] [] STATE: TX |NOTIFICATION TIME: 19:02[EST]|
| RXTYPE: [1] W-4-LP,[2] W-4-LP |EVENT DATE: 03/12/1999|
+------------------------------------------------+EVENT TIME: 14:12[CST]|
| NRC NOTIFIED BY: TIM FRAWLEY |LAST UPDATE DATE: 03/16/1999|
| HQ OPS OFFICER: DICK JOLLIFFE +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |GARY SANBORN R4 |
|10 CFR SECTION: |WILLIAM BECKNER, EO NRR |
|AESF 50.72(b)(2)(ii) ESF ACTUATION |ROSEMARY HOGAN IRO |
|NLCO TECH SPEC LCO A/S | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
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| - PARTIAL LOSS OF OFFSITE POWER DUE TO A FAULT IN A SWITCHYARD CIRCUIT |
| BREAKER - |
| |
| AT 1412 CST ON 03/12/99, DURING PLANT SWITCHYARD ACTIVITIES, UNIT 2 |
| EXPERIENCED A LOSS OF POWER TO THE #2 STANDBY TRANSFORMER DUE TO A FAULT IN |
| A SWITCHYARD CIRCUIT BREAKER. THIS CONDITION CAUSED TRAIN 'B' AND TRAIN 'C' |
| 4160-VOLT ESF BUSES TO ACTUATE ON A LOSS OF OFFSITE POWER. THE FOLLOWING |
| ESF SYSTEMS ACTUATED: TRAIN 'B' AND TRAIN 'C' ESF EDGs, ESSENTIAL COOLING |
| WATER SYSTEM, ESSENTIAL CHILLED WATER SYSTEM, COMPONENT COOLING WATER |
| SYSTEM, CONTROL ROOM HVAC SYSTEM, AND AUXILIARY FEEDWATER SYSTEM (ON RECIRC |
| MODE). |
| |
| DURING THIS EVENT, THE SPENT FUEL POOL TEMPERATURE INCREASED APPROXIMATELY |
| 1.5�F, AND THE TRAIN 'B' ESF EDG (#22) OUTPUT BREAKER FAILED TO CLOSE |
| AUTOMATICALLY. THE LICENSEE DECLARED THE TRAIN 'B' ESF EDG (#22) |
| INOPERABLE, EVEN THOUGH IT IS FUNCTIONAL (72-HOUR LCO). |
| |
| THERE WAS NO FIRE, AND NO PERSONNEL WERE INJURED. THE LICENSEE RESTORED ALL |
| SYSTEMS TO NORMAL. UNIT 2 IS STABLE AND OPERATING AT 100% POWER. |
| |
| THE LICENSEE IS INVESTIGATING THE CAUSE OF THE FAULT IN THE SWITCHYARD |
| CIRCUIT BREAKER AND THE TRAIN 'B' ESF EDG (#22) OUTPUT BREAKER FAILING TO |
| CLOSE AUTOMATICALLY. |
| |
| THE LICENSEE PLANS TO SUBMIT A LICENSEE EVENT REPORT ON THIS EVENT TO THE |
| NRC. |
| |
| THIS EVENT HAD NO IMPACT ON UNIT 1. |
| |
| THE NRC RESIDENT INSPECTOR WAS ON SITE DURING THIS EVENT AND REPORTED IT TO |
| REGION 4. |
| REGION 4 PERSONNEL WERE AWARE OF THIS EVENT PRIOR TO THE LICENSEE REPORTING |
| IT TO THE NRC OPERATIONS OFFICER. |
| |
| |
| * * * UPDATE AT 1207 ON 03/13/99 FROM TIM FRAWLEY TO JOLLIFFE * * * |
| |
| AT 1412 CST ON 03/12/99, DURING THE LOSS OF POWER TO #2 STANDBY TRANSFORMER, |
| THE LICENSEE ENTERED TECH SPEC 3.0.3 FOR UNIT 2 DUE TO THE LOSS OF POWER TO |
| TWO 13.8-KV STANDBY BUSES AND THE INOPERABLE CONDITION OF THE TRAIN 'B' ESF |
| EDG (#22); THIS CONDITION IS NOT COVERED UNDER THE ACTIONS OF TECH SPEC |
| 3.8.1.1 (AC ELECTRICAL POWER SOURCES). |
| |
| AT 1530 CST ON 03/12/99, THE LICENSEE RESTORED POWER TO THE TWO 13.8-KV |
| STANDBY BUSES. |
| |
| AT 1553 CST ON 03/12/99, THE LICENSEE EXITED TECH SPEC 3.0.3 FOLLOWING |
| SATISFACTORY PERFORMANCE OF SURVEILLANCE REQUIREMENT 4.8.1.1.1.a. THIS |
| CONDITION IS REPORTABLE TO THE NRC UNDER SECTION 2.G OF FACILITY OPERATING |
| LICENSE NPF-80. |
| |
| UNIT 2 IS STABLE AND OPERATING AT 100% POWER. |
| |
| THE LICENSEE INFORMED THE NRC RESIDENT INSPECTOR. THE NRC OPERATIONS |
| OFFICER NOTIFIED THE R4DO (GARY SANBORN), NRR EO (BILL BECKNER), AND IRO MGR |
| (ROSEMARY HOGAN). |
| |
| * * * UPDATE 1916 3/16/99 FROM MERTINK TAKEN BY STRANSKY * * * |
| |
| "ON 3/12/99 STANDBY DIESEL GENERATOR 22 AUTO STARTED IN RESPONSE TO A LOSS |
| OF OFFSITE POWER TO THE 4.15 kV ENGINEERED SAFETY FEATURES BUS (ESF) E2B. |
| THE DIESEL GENERATOR OUTPUT BREAKER FAILED TO AUTOMATICALLY CLOSE. |
| OPERATIONS PERSONNEL MANUALLY CLOSED THE OUTPUT BREAKER USING THE REMOTE |
| HANDSWITCH IN THE CONTROL ROOM AND ENERGIZED THE ENGINEERED SAFETY FEATURES |
| BUS. DURING THE TROUBLESHOOTING OF THIS EVENT IT WAS DETERMINED THAT THE |
| CELL SWITCH IN E2B 480 VOLT LOAD CENTER CUBICLE 3F FOR ESSENTIAL CHILLER 216 |
| WAS FOUND TO BE IN DEGRADED CONDITION. THIS FUNCTION OF THIS CELL SWITCH IS |
| TO ALLOW THE SEQUENCER TO RECOGNIZE THE BREAKER AS OPEN AND PERFORM THE |
| REQUIRED SEQUENCING OF ESF LOADS, STARTING WITH THE CLOSING OF THE DIESEL |
| GENERATOR OUTPUT BREAKER. THIS BREAKER HAD BEEN RACKED OUT SINCE 2/28/99 FOR |
| MAINTENANCE ON THE CHILLER. |
| |
| "SINCE THE PERFORMANCE OF RACKING OUT THIS BREAKER DID NOT VERIFY CELL |
| SWITCH OPERATION AS DIRECTED BY OPERATING PROCEDURES, DIESEL GENERATOR 22 |
| WAS INOPERABLE SINCE THE RACKING OUT OF THE CHILLER BREAKER ON 2/28/99. WITH |
| THIS DIESEL GENERATOR INOPERABLE, TECHNICAL SPECIFICATIONS REQUIRE |
| PERFORMANCE OF CONDITIONAL SURVEILLANCES FOR VERIFICATION OF OPERABILITY OF |
| AC OFFSITE SOURCES. SINCE THIS TECHNICAL SPECIFICATION REQUIREMENT WAS NOT |
| SATISFIED, THIS EVENT IS REPORTABLE AS A CONDITION PROHIBITED BY TECHNICAL |
| SPECIFICATIONS AND NOTIFICATION IS MADE PER NPF-80, SECTION 2G." |
| |
| The NRC resident inspector has been informed of this update by the licensee. |
| Notified R4DO (Harrell). |
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+------------------------------------------------------------------------------+
|Power Reactor |Event Number: 35475 |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: ROBINSON REGION: 2 |NOTIFICATION DATE: 03/16/1999|
| UNIT: [2] [] [] STATE: SC |NOTIFICATION TIME: 01:20[EST]|
| RXTYPE: [2] W-3-LP |EVENT DATE: 03/15/1999|
+------------------------------------------------+EVENT TIME: 22:12[EST]|
| NRC NOTIFIED BY: DAVID COOK |LAST UPDATE DATE: 03/16/1999|
| HQ OPS OFFICER: LEIGH TROCINE +-----------------------------+
+------------------------------------------------+PERSON ORGANIZATION |
|EMERGENCY CLASS: N/A |EDWARD MCALPINE R2 |
|10 CFR SECTION: | |
|NINF INFORMATION ONLY | |
| | |
| | |
| | |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|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
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| COURTESY NOTIFICATION REGARDING A FATALITY WITHIN THE OWNER CONTROLLED AREA |
| OUTSIDE THE 1,400-FOOT BARRIER |
| |
| The following text is a portion of a facsimile received from the licensee: |
| |
| "At approximately 2212 on 03/15/99, Robinson Security [personnel] notified |
| the Control Room of an automobile with a fatality on the West Entrance Road |
| access to the plant outside the site boundary. The cause of the fatality is |
| unknown, and this occurrence is being investigated by local law enforcement |
| agencies and the State Law Enforcement Division. Due to the fatality |
| occurring off-site, but on CP&L property adjacent to the site boundary, and |
| [due to] the interaction of several off-site agencies responding to the |
| scene, the NRC Operations Center is being notified as a courtesy. This call |
| is for informational purposes only and does not fall within the reporting |
| criteria of 10 CFR 50.72." |
| |
| The licensee notified the NRC resident inspector. The licensee does not |
| plan to issue a press release. |
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