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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  |
|                                                   |                          |
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                                   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   |
| 1.5F, 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).                                                     |
+------------------------------------------------------------------------------+

+------------------------------------------------------------------------------+
|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  |
|                                                   |                          |
|                                                   |                          |
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                                   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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