ML20148J723

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Monthly Oper Rept for Oct 1978
ML20148J723
Person / Time
Site: Rancho Seco
Issue date: 10/31/1978
From: Colombo R
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML20148J717 List:
References
NUDOCS 7811160078
Download: ML20148J723 (7)
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Text

m AVERAGE D AILY UNIT POWER LEVEL 9 -

DOCKET NO, 50 '112 UNIT Rancho Seco Unit 1 DATE 78-10-31 COMPLETED BY R. W. Colombo TELEP}{0NE (916) 452-3211 MONTl! October DAY AVER AGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe Net) pgwe. Net; I 886 888 17 2 886 888 18 3 884 892 19 4 886 20 892 5 883 895 21 6 895 22 894 7 892 891 7.3 _,

8 891 N _ 697 _

9 892 758 25 10 890 26 889 11 887 27 890 12 .-

884 892 28 13 884 895 29 14 886 897 30 15 348 897 3

16 891 INSTRUCTIONS 2PH N ap7f On this format li.st the aserage daily unit power lesel m MWe Net for each da3 in the reponing month. Compute to the nearer whole nwgawatt, (9/77) nc~w*we>~emmmm nmm,pme-w.cmmm-,cux- nn. mng-n.,m.mna

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UNITSHUTDOWNS AND POWER REDUCTIONS s DOCKET NO. 50-31?

UNIT NAME . Ranche - Seco Unit .1,

DATE 78-10-31 -+

F-COMPLETED BY R. W. {.olombo REPORT MONTH October (916) 452-3211-TELEPl!ONE e

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Report

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Action t'o -

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19 7- 781015 S 3.3 B 1 NA CB MOTORX Shutdown to-facilitate adding oil to -

RCP'"C" motor upper. bearing. Seals ,

in this area will be replaced.during refueling-shutdown.-

20 7,81024 F NA A 1 78-016/0lT-0 EE INSTRU. - Started power reduction-in preparatiori for unit shutdown due to los_s o,f.both diesel ~ generators.--_ Regained use of ~

diesel _. generator prior to' completiing -

shutdown. ' Terminated shutdown'and increased power. -

1 i-i 1 2 3 14 F
Forced Reason: Method:

1 Exhibit C . Instructions  ;;

S: Scheduled A-Equipment Failure (Explain) 1. Manual for Preparation of Data n Maintenance of Test 2-Manual Scrarn. Entry Sheets for Licensee

! C-Refueling - LAutomatic Scram. ' Event Report (LER) File (NUREG-D-Regulatory Restriction 4 'ther (Explain) 0161) '

E-Operator Training & License Examination F-Adruinistrative 5' l'; G Operational Error (Explain) Exhibit I - Same Source -

(9/77) -

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OPERATING DATA REPORT DOCKET NO. 50-312 DATE _78-10-31 COMPLETED BY R. W. Colombo TELEPHONE _(916) 452-3211 j OPERATING STATUS

1. Unit Name: Rancho Seco Unit 1 N '"
2. Reporting Period: -_0ctober 1978
3. Licenxd Thermal Pow ~ (.\lWt n 2772
4. N2meplate Ratin;IGross SIWet 963
5. Design Electrical R; ting (Net 3fweg 918
6. Sluimum Dependable Capacity (Gross.\lwe): 917
7. Maimum Dependable Capacity (Net .slWe): 873
8. If Changes Occur in Capacity Ratings (Irems Number 3 Throu;h 7) Since Last Report.Gise Reasons:

N/A

9. Power Lese! To Which Restr:eted. If Any (Net NIWe): NONE
10. Reasons Fer Restrictions. If Any: N/A This 51onth Yr. to Date Cumulative
11. Hours in Reporting Period 745 7,296 31,033
12. Number Of Hours Reactor Was Critical ._._

745 6.664.7 18,440.9

13. Reactor Resene Shutdown Hours _

0 0 2,417.4 __

14. Hours Geaerator on.l.ine 741.7 6.466.3 17.579.8
15. Unit Reerve Shutdown Hours 0 0 10.8
16. Gross Thermal Energy Genaated (SIWH) 2.003.620 14.463.819 43,601,542
17. Gross Electrical Energy Generated tS!WH) 667,066 4,809,201 14,748,451
18. Net Electrical Energy Generated t.\lWH) 634.446 _ '..508.010 13.919.219
19. Unit Senice Factor 99.6 88.6 56.6
20. Unit Asailability factor 99.6 88.6 56.7
21. Unit Capacity Factor iUsing SIDC Net) 97.5 70.8 51.4
22. Unit Capacity Factor ILi:ng DER Net) 92.8 67.3 48.9
23. Unit Forced Outap Rate 0 9.2 39,2
24. Shutdowns Scheduled Our Nest b .\lonths (T)pe. Date,an 1 Duration of Eacht Refueling shutdown November 15, 1978, approximately 38 days.
25. If Shut Down \t End Of Report Period. Estimated Date of Startup:

.- N/ A

26. Uniti in Test Status (Prior :u Commercial Operation h forecast Achies ed INIIl \L CRIT IC \ LITy N/A N/A INITIA L' E LEC TR ICI IN N/A N/A CONDlERCI \L OPER.\110N N/A N/A (4/77)

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is , -i NARRATIVE.SU!e1ARY OF PLANT OPERATIONS

'Date

'10-l Plant operating'at 100%yfull power.

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s 10-3 Removed Diesel Generator "B" from service for fuel. oil line_(fire protection) modification. Started-and paral-1eled "A"'Diese1' Generator to the Nuclear Service Bus.

t 10-4' (

(1116) ~ Shutdown "A" Diesel Generator due to fuel oil leak.

(1143) Started power reduction in preparation for shutdown in accordance with TS 3.7.3 (loss of both Diesel Generators) . ,

(1206). ' Repaired fuel. oil leak on "A" Diesel Generator.

t (1210)- . Started and paralleled thel"A" Diesel Generator . to the Nuclear Service Bus..

(1218) -Terminated-reactor shutdown and increased power back to 100%.

10-6 Ran'SP 206.03B,LDiesel Generator "B" Synchronization Surveillance Test. Unit-declared operable.

Ran SP 206.03A,. Diesel Generator'"A" Synchronization Surveillance' Test'. ' Unit-declared operable and placed unit in standby.

10-15 (0002) -Commenced reducing power toffacilitate adding oil to RCP "C" upper motorL bearing, ,

(0130) Tripped Main Generator (opened OCB's).

(0215) Reactorlpower at'10-8 Amps.-

(0335) Started to increase reactor power.

' (0445) Paralleled Main Generator.to the system (closed OCB's),

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- (1720). . Reactor a t ,51% full power.

(1900); Reactor;at 91%. full' power, commenced two hour hold,

o. (2158); - Reactor at 100% full l power.

10-20; ' Started and paralleled Diesel. Generator "A" to the

.Nucler.r Service Bus',. removed; Diesel Generator."B"

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from. service for system modificati.on,

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SUMMARY

)0F-PLANTj0PERATIONh-(Continued)

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"" 10-24. '

~(1216)' ;Losti voltage. r'egulator 'dircuit . on Diesel Generator '"A". o 4'

Shut down Diesel.

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,(1223) St'artedJpower. reduction in preparation for shutdown.ini Jaccordance with TS 3.7.3. ,

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- (1745). Completed repairs.of voltage _ regulator circuit for Diesel Generator "A". Started unit for Surveillance Test.

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-(1905)' Diesel Genera tor' "A" back in . service , paralleled ~ to a Nuclear' Service Bus.

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' (1906) Terminated reactor shutdown'.(down1 to approximately 35% FP) j and started increasing power..

(1955), '

Paralleled Diesel Generator "B" and ran approp'riate Surveillance Test, left' paralleled at 1500'kw.

.(2330)~ ' Ren'ctor at 50% full power.

l 10-25 (0705)' Reactor at'87% full. power, commenced two hour" hold.

(1210). ' Reactor at 100% full power.

10-27 ' Started Diesel Generator "B", paralleled to Nuclear Service. Bus. Removed: Diesel Generator "A" for modification.

PERSONNEL CHANGES REQUIRING REPORTING-No personnel changes'that require reporting in accordance with Technical Specifications Figure 6.2-2 were made'in October 1978.

. MAJOR ITEMS OF SAFETY-RELATED. MAINTENANCE-c -1.)- Replaced' fuses.in. voltage regulator circuit on Diesel ,

Generator "A" '(LER L78-16) . '

Replaced insulating'shicids and' actuatingLarms on . twenty-seven

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',. . (2.7): breakers ton ithe'2A. and 2B 480 Volt Motor Control Centers

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SUMMARY

.10FlCIIANGES MADE IN' ACCORDANCE WITH 10 CFR 50.59(b)

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.No. changes, tests or. experiments were completed .

_in October 1978.

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REFUELING INFORMATION REQUEST.

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11. Name.of; Facility.'- Rancho Seco Unit' 1

.2. ' Shheduled' date (f'o[next'. refueling. shutdownt- November 15,1978.

31 - , ' Scheduled date forfrestart followingerefueling;-.' December 23, 1978

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4. Technical Specification change or.other license amendment required -

a.) . Change to Rod Index;vs.. Power Level Curve (TS 3.5.2) b.)' Change to-Core. Imbalance'vs. Power > Level Curve (TS 3.5.2) c.) '.' Tilt ' Limits (TS .3.5.2)'

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d.) Safety Eq'ipment u Testing'(TS 3l3.3)'

5. .

Scheduled date(s) for submitting proposed'11 censing action - September 11, 1978 1

6. Important licensing'consi'derations associated.with refueling - None  :

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7. Numb tr af. fuel . assemblies a.) 1 Ithe core - 177 b .' ) ' ' 'In'the Spent Fuel Pool - 56 spent; 56 new

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8. Present licensed' spent: fuel capacity' 579
9. Projected:date 'of the last refueling that can be discharged to the Spent Fuel Pool,-'1987 ]

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.&# 88009-t o UNITED STATES NUCLEAR REGULATORY COMMISSION j

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$ . .. fm ' ,j WASHINGTON, D. C. 20555 l

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-MEMORANDUM FOR: . TERA Corp.

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IFROM: US NRC/TIDC/ Distribution Services Branch

SUBJECT:

Special Document Handling Requirements KT-*

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attached document.

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_.2. The attached document requires the following special considerations:

Do not send oversize enclosure to the NRC PDR.

C Only one oversize enclosure was received - please return for Regulatory File storage.

C Proprietary information - send affidavit only to  ;

- f1- . the NRC PDR C Other: ' (specify) l 4(

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cc: DSB Files TIDC/DSB Authorized. Signature

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