ML20036C158
| ML20036C158 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 05/31/1993 |
| From: | Haltiwanger J SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | |
| Shared Package | |
| ML20036C154 | List: |
| References | |
| NUDOCS 9306140328 | |
| Download: ML20036C158 (4) | |
Text
r=
~
i
.. t '
s I
l Director, Office of Resource Management l
May Monthly Operating Report Page'l i
i ATTACHMENT I AVERAGE DAILY UNIT POWER' LEVEL
_f
'i f
DOCKET NO, 50/395 UNIT V.
C. SUMMER I i
DATE 6/ 1/93 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-4297 MAY 1993 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL i
(MWe-Net)
(MWe-Net)
?
?
1.
-35 17.
875 2.
-35 18.
876
!i 3.
134 19.
876 if i
4.
211 20.
871 i
5.
210 21.
871 6.
353 22.
873 7.
268 23.
875 8.
633 24.
872 5
9.
824 25.
873 l
l 10.
867 26.
871 l
11.
870 27 872 12.
869 28.
870 13.
871 29.
645 14.
865 30.
631 15.
802 31.
631 l
16.
841 l
i J
)
[*I 9306140328 930607 PDR ADOCK 05000395 R
PDR LZ j
?-
=
v.
.1 Director, Office of Resource Management May Monthly Operating Report Page 2 ATTACHMENT II OPERATING DATA PIPORT DOCKET NO.
50/395 UNIT V. C. SUMMER I DATE 6/ 1/93 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-4297 OPERATING STATUS
- 1. Reporting Period:
May 1993 Gross Hours in Reporting Period:
144
- 2. Currently Authorized Power Level (MWt): 2775 Max. Depend. Capacity (MWe-Net):
885 Design Electrical Rating.(MWe-Net):
900
- 3. Power Level to Which Restricted (If Any) (MWe-Net) : N/A
- 4. Reasons for Restrictions: N/A THIS MONTE YR TO DATE CUMULATIVE.
- 5. Number of Hours Reactor Critical 721.9' 2220.9 65398.6
- 6. Reactor Reserve Shutdown Hours 0.0 0.0-0.0
- 7. Hours Generator on Line 690.0
'2122.2 64142.5:
- 8. Unit Reserve Shutdown Hours 0.0 0.0 0.0
- 9. Gross Thermal Energy Generated (MWH) 1605283 5461746 167504504
- 10. Gross Electrical Energy (MWH) 529390 1822040 55547799
- 11. Net Electrical Energy Generated (MWH) 502347 1720898 52783383
- 12. Reactor Service Factor 97.0 61.3
'79.2
- 13. Reactor Availability Factor 97.0 61.3 79.2
- 14. Unit Service Factor 92.7 58.6 77.7
- 15. Unit Availability Factor 92.7 58.6 77.7
- 16. Unit Capacity Factor (Using MDC) 76.3 53.7 72.3
- 17. Unit Capacity Factor (Design MWe) 75.0
'52.8 71.1
- 18. Unit Forced Outage Rate 0.0 4.7 5.9
-19. Shutdowns Scheduled Over Next 6 Months (Type, Date & Duration of Each):
- 20. If Shut Down at End of Report Period, Estimated Date of Startup:'N/A-
- 21. Units in Test Status (Prior to Commercial Operation): N/A
m i
j i
I r
Director, Office of Resource Management l
fey Monthly Operating Report i
Page 3
.i ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS 1
i DOCKET NO.
50/395 i
UNIT V. C. SUMMER I
'DATE 6/'1/93 COI@LETED BY J. W. HALTIWANGER i
TELEPHONE (803) 345-4297 IGY 1993 I
NO.
DATE TYPE DURATICN REASON l'ETHOD CORRECTIVE ACTION / COMMENTS r
2 930306 S
54.0 C
4 REFUELING NUMBER 7 3 930529 F
0.0 A
5 FAILURE OF B CIRC WATER PUf@
+
1.O REASON A: Equipment Failure B: Maintenance or Test C: Refueling D: Regulatory Restriction E: Operator Training and License Examination
[
F: Administrative G: Operational Error H: Other (Explain) i 2,O METHOD I
1: Manual 2: Manual Scram 3:. Automatic Scram 4: Continuation (Use initial Date) 5: Power Reduction (Duration 0.0)
- 9. Other (Explain) v 9
-f D
q m.
Director, Office of Resource Management May Monthly Operating Report Page 4 ATTACHMENT IV NARRATIVE
SUMMARY
OF OPERATING EXPERIENCE DOCKET NO.
50/395 UNIT V. C. SUIHER I DATE 6/1/93 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803)345-4297 t
MAY 1993 On May 1, V. C. Summer, Unit 1 entered Mode 2 following the seventh refueling I
outage. Criticality was achieved at 2206 on the 1st.
On May 3, at 0538, tne plant entered Mode 1.
At 0559 the generator breaker was closed, ending the refueling outage.
On the 6th, at 61 percent power, insufficient stator cooling water flow caused power reduction to approximately 30 percent. Following repairs, power ascension and testing resumed.
7 Power ascension was stopped at approximately 99 percent on the May 9 to stabilize the plant for Delta-T measurement and rescaling. Power was reduced.
to 90 percent on the May 14 to repair a feedwater pump seal. During the power increase on the May 16, high steam flow was indicated at one steam generator at approximately 99 percent power, so power was reduced to 98 percent to allow further evaluation of the steam flow indication.
The steam flow instrumentation had not required rescaling for several cycles.
Steam generator tube plugging has resulted in reduced steam pressure. The resulting increase in volumetric steam flow, along with a minor power tilt in the core, has resulted in one steam generator producing greater than normal steam flow. Power was held at 98 percent to allow for rescaling of first stage turbine pressure and steam flow channels.
On May 28, power was reduced to approximately 70 percent when the B circulating water pump lower casing separated.
Power was stabilized at about 73 percent while repairs were made to the pump.
At the end of May, the plant was operating at approximately 73 percent power, awaiting restoration of the circulating water pump.
-