ML20079M644

Revised Monthly Operating Rept for May 1983

ML20079M644
Person / Time
Site:	Summer
Issue date:	05/31/1983
From:	Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
To:
Shared Package
ML20079M626	List: ML20079M623 ML20079M630 ML20079M642 ML20079M644 ML20079M655 ML20079M663 ML20079M668 ML20079M671 ML20079M687 ML20079M690
References
NUDOCS 8401270383
Download: ML20079M644 (2)

Text

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REVISED'PAGE -- JANUARY 13, 1984 Director, Office of Resource Management May Monthly Operating Report Page 4-June 15, 1983 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 06/15/83 COMPLETED BY G. J. TAYLOR TELEPHONE (803) 345-5209 (1) METHOD OF (2)

TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR CORRECTIVE ACTIONS /

NO. DATE S: SCHEDULED -(HOURS) REASON REDUCING POWER COMMENTS 7 830317 S 535.0 H 1 7) Reactor Shutdown for D-3 Steam Generator Modification.

8 830528 F 29 9 A 3 '8) Turbine Trip from High Vibration.

8401270383 840113 PDR ADOCK 05000395 R PDR

m- .

REVISED PAGE -- JANUARY- 13, 1984 Director, Office of Resource Management May-Monthly Operating Report Page 5 June _15, 1983 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE Virgil C. Summer Nuclear Station, Unit No. 1, achieved criticality at 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> on May 20, 1983, after a 63-day outage for modification of the Westinghouse D-3 Steam Generators.

On May 7, 1983, at 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, a station alert was declared due to a fire in the "C" Component Cooling Water Pump Speed Changer Switch. The fire was extinguished upon equipment deenergization at 0532 hours0.00616 days <br />0.148 hours <br />8.796296e-4 weeks <br />2.02426e-4 months <br /> and the plant returned to normal status at 0539 hours0.00624 days <br />0.15 hours <br />8.912037e-4 weeks <br />2.050895e-4 months <br />.

On May 22, 1983, at 1359 hours0.0157 days <br />0.378 hours <br />0.00225 weeks <br />5.170995e-4 months <br />, a reactor trip occurred from Low-Low level in Steam Generator "C" with the reactor at 14% power.

The cause of this trip was identified to be the result of procedural inadequacies while using the new forward / reverse flush procedure on the Feedwater System. The main generator was not on line.

On May 28, 1983, at 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br />, the reactor tripped at 72% power from a turbine trip due to high vibration on #9 bearing.

On May 29, 1983, at 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br />, the reactor tripped at 14% power on Low-Low level in Steam Generator "C" during swapover from Bypass to Main Feedwater. The main generator was not on line.

On May 31, 1983, Virgil C. Summer Nuclear Station was at 74% power and. power ascension. testing was continuing.