ML20062J092
| ML20062J092 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 09/03/1980 |
| From: | Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | |
| Shared Package | |
| ML20062J089 | List: |
| References | |
| NUDOCS 8009160297 | |
| Download: ML20062J092 (5) | |
Text
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C 50-312 C
UNIT SliUTDOWNS AND POWER RLDUCTIONS DOCKET NO. Id"C8'O beCu lio - l*
UNIT NAME H
60-06-31 DATE O
COMPLE'IED ny R. W.
Colombo O
REPORT MONTil August, 1980 TELFPilONE 916-457-321I Q
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Cause & Corrective
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-, 5 x La.cer.sce 5 -r,
. No.
Date g
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.3 E, S Event u?
$3 Action to l
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fe 5, j Report #
Eu
$U Prevent Recurrence H
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7 80-08-12 F
472.2 A
3 N/A IIA TURBI N Damaged thrust bearing.
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3 2
3 4
F: Forced Reaum:
Method:
Exhibit G-Instructions S: Scheduled A 1:quirment Failure (Explain)
I-Manual for Preparation of Data ll Mainterance of Test
- 2. Manual Scram.
Entry Sheets for Licensee C Itefacting 3 Automatic Scram.
Event Report (LER) File (NUREG-r D. Iter,ulatory !!cstriction 4-Other (Explain) 0161) 1: Opesator Tsaining& Licensc Examination F Administrative 5
G Operational Ertur (Explain)
Exhibit ! - Same Souree (9/77)
Il OLher (Explain)
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d VITUEll::G 1:iOT2%T10:: REGl.*:ST Rancho Seco Unft 1 1.
1:ane of racility:
2.
Scheduled ds:c for next refueling shutdown:
April, 1981
+
June, 1981 i
3.
Scheduled date for restart follcuing refueling:
4: Technical Specification change or other if cense anendnent required:
a) Change to Rod Index vs. Power Level Curve (TS 3.5.2) b) Chcage to Core Inbalance vs. Pouer Level Curve (TS 3.5.2)
. c) Til Limits (TS 3.5.2) d) Safety Equip cat Testing (TS 3.3.3) 5.
ScheduIcd date(s) for submitting proposed ' licensing action:
May, 1981
- h. I:pertent licensing consideratione. associated with refuel'ing:
None 7.
runber of fuel assemblies:
a) In the core:
177 b) In the Spent Fuel Fool:
f64 D.
Present licensed spent' fuel capneity:
579 9.
frojected date of the last refueling the: can be discharged 1987 to the Spent Fuel Pool:
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OPERATING DATA REPORT DCCKET NO.
50-312 DATE 80-08-31 COS!PLETED I;y R. W.
Colonbo l
TELEPl!ONE 916-452-3211 OPERATING ST ATUS Notes l
- 1. Unit Name:
Rancho Seco Uni + 1
- 2. Repertin; Period:
August. 1900 l
- 3. Licensed Thermal Power 13tht):
2772 l
'4. Nameplate Ratin;iGross.'.1Wer W
- 5. Desi;n Eie:trical Ratin: INet 31Wei:
- 6. Staximum Depend b:e Cyacity(Gross 31We):
9I7
- 7. S!s.si :um DependaL!e Capacity (Net 31We):
073 S. If Chan;es Occur in Capaci:y Ratings 4 Items Number 3 Throu;h 7) Sin:e Last Report. Gise Reasons:
N/A N/A
- 9. Power Level To khi:h Restricted. If Any (Net.\\1We):
10.' Reasons For Restri:tions. If Any:
N/A This $1onth Yr..to.Dat:
Cumulative
- 11. Ilours In Reportin; Period 744 5,855 47,112
- 12. Number Of ifours Rea: tor Was Criticar 290.5 2,548.5 28,622.0
- 13. Reactor Res:ne Shutdown Hours 0
0 3,975.I
- 11. Hours Generator Galine 271.8 2,445.4 27,386.7 IS, Unit Rewne Shutdown Hours 0
0 1,210.2 i
- 16. Gross 1hermal Ener;y Generated tilWH) 734,668 6,25I,304 69,315,002
- 17. Croi> El e:rieal Energ3 Generated 13thili 243,168 2,096,300 23,380,836
- 18. Net Electrical Energy Generated.\\lh H,,
226,II2 1,973,910 22,084,799 t
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- 19. Unit Senice Factor 36.5 41.8 58,1
- 20. Unit Asailabifi:y Factor 36.5 41.8 60.7 I-
- 21. Unit Cg.i.1t> Factor (Udn; 3!CC Net) 34.0 36.o 53,7
- 22. Unit Cy:.it3 Factor 1U3i::; DER Neti 13.I
- 23. Unit Forad Ourage R:te 63.5 ___
16.7 q;,t 18.4 31.0
- 24. Shutdown > Seheduled Oser Nest o Slonths IT> re. Date.and Durat' n of Each):
NA S
- 25. If Shut Dawn At End Of Repart Period.Esthasted Date of St.trtup:
- 26. Unif > In Tot Status iPrior o Commerei:1 Opiration):
Forecast Achies ed INITI \\ L CRil!CA LITY N/A N/A INITIil rt !rTRICITY CO31%Iti:CIAL OrrR \\ riaN 10/77)
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AVERAGE DAILY UNIT POWER LEVEL 0-312 DOCKET NO.
UNIT R.P.Lncho Seco Uni t Onc i DATE 80-08-31 CO\\lPLETED IlY TELEPliONE 916-452-3211 510NT11 Aoaust, 1980 t
DAY AVERAGE D. IL '
ER LEVEL DAY AVERAGE DAILY POWER LEVEL (SIWE. Net)
I 854 o
17 861 2
o 18 866 3
o 19 4
866 o
,9 S
863 0
21 6
867 0
864 7
0 33
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866 i
24 865 0
9 25 s
869 l
30 26 0
868 II 27 0
12 255 0
1 28 13 0
0 0
14 0
30 IS 0,
33 16 0
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INSTRUCTIONS On this format.hst the aserage daily unit power leselin alwe Nc: for each da.s in ille reporting nionth. C i
the nearest whole nepwart.
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NARRATIVE
SUMMARY
OF PLANT OPERATION 8-1 to Reactor ? 96%
8-12 8-12 0748 Reactor trip (inverter mal function) 1855 Reactor critical 2350 Turbine-Genera tor trip (excessive thrust bearing displacement) 8-13 0957 Began reducing Rx power to 5%
1125 Began cold shutdown 1339 Tripped Rx 8-13 to Plant in cold shutdown 8-31 Summary of Changes Made in Accordance wi th 10 CFR 50.59(b) 1.
Installed fence around tank farm and installed ballistic doors on control room.
2.
Changed Rancho Seco Emergency Plan.
3 Changed RPS high pressure setpoint.
Personnel Chances Recuiring Reporting Mr. Villis Ford resigned as Operations Supervisor. He is replaced by Mr. Do'nald Blachly effective 9-3-80.
Mr. Blachly is a Senior Licensed Operator and a registered mechanical engineer.
Major items of Safety-Related itaintenance 1.
Conducted continuity tests to diesel generator voltage regulator control switch per IE Bulletin 80-20.
2.
Installed new seal on pressurizer spray bypass.
3 Tightened studs on bonnet of leaking pressurl:er spray valve.
4.
Replaced "D" RPS flow transmitter.