ML19261D447

Monthly Operating Rept for May 1979

ML19261D447
Person / Time
Site:	Rancho Seco
Issue date:	05/31/1979
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19261D446	List: ML19261D445 ML19261D447
References
NUDOCS 7906190254
Download: ML19261D447 (5)

Text

AVLI( AGE DA!LY UNIT l'Ohll:1.L\\TL DOCl'ET NO.

50-312 pg Rancno scco un u 2 uNir d

DATE 79-05-31 R. W. Colombo COMPLETEI) BY TELErl10NE (916) 452-3211 MONTil

"'y 1974 DAY AVEl: AGE Da!LY I OWER LEVEL DAY AVERAGE DAILY POWER LEVEL (31We-Net)

(MWe-Nel) 1 0

17

'O 0

2 is n

0 3

39 o

4 0

20 0

5 0

0 23 0

6 22 0

7 0

0 23 0

8 O

23 9

0 25 0

10 0

0 26 11 0

.0 27 0

0 12 28 13 0

39 0

I4 0

30 0

15 0

33 0

16 0

2307 194 INSTRL'CT!ONS Oa this fon:ut hst the neu;e hi! t: nit pov.e: leselin MVic Net fo cach 6.s in the reperring :nonth. Con.pute to 3

the n:Jtest who:: nw; nut:

(9,/77 )

790619 @S4

s.

50-312 UNITSiiUTDOWNS AND POWER REDUCTIONS

^ ' -

Rancho seco Unit 1 t

D.\\~1 E 79-0 5-II COMPl.E1 ED :1Y

-R.W-('" I ' ' d

REPORT MONT};

MAY

.II LEI'llO.i'E (41 M M2-l?lI n.

E E

.5 g

}

4 Y E' Licensee E -r,

$9, Cause & Corrective No.

D.ite i

3g

,g g 5 Event gg g"Od Action to dE 5

H 3 5 =g Report #

mU Prevent Recurrence o

o a

7 79-05-01 S

168 F

1 N/A N/A N/A To make plant modifications. required due to TMI-2.

7 79-05-08 S

576 D

1 N/A N/A N/A USNRC Order No. 7590-01 issued May 8, 1979.

>M E@

I!

'~

CC =

C@

C===

dB 1

2 3

4 P

F: Forced Reason:

Method:

Exiiibit G. Instructions 5: Schedu!cd N

A !:quipment Failure (Explain) 1 Manual for Preparation of Data u

iM: aim:nanec of Test 2.Manua: Scram.

Entry Sheets for Licensee o

C.!<efue:ing 3 Automatic Scram.

Event Report (LER) Fi:e (NUREG-y D itenul.etosy Restriction 4.Other (Explain) 0161)

Ibop:rator Trainin;;& License Examination.

F Adnunistrative S

g

' G. Operational Error (Exp ain)

Exhibit ! Same Source (9/77) g i101her (Explain)

OPERATING DATA REPORT DOCKET NO. 50-312 DATE 79-05-31 COMPLETED 3Y RX Colombo TELEP110NE M1M 4s'-3211 OPERATING STATUS N l'5

1. Unit Name:

"" c% "eco " 11 t 1 SI3V 3979 l Shutdown continued from

2. Reportin; Feriod:

g mg g g

3. Licensed Thermal Power t.\\1.iti:

O porate additional Rx trip 963

4. Narnep' ate Ratin;(Gro s it ' ei.

circuits.

Received USNRC

5. Desi;n E!e:trical R; tin;(Net.'Ibe;:

lorderNo. 7590-01 on

6. 3!aximum Dependable Cepacity eGross \\1We): 917 l May 8,1979.

873 l

7. Maximum DependabIe Cap::ity (Net SIWet:

8. If Chan;es Occur in Capacity R; tings tirems Number 3 Throu;h 7) Since Last Report. Gise Reasons:

RECEIVED USNRC ORDEk NO. 7590-01 MAY 8, 1979.

9. Power Lese! To which Restr'cted. If Any (Net MWe):

0

10. Reasons Fer Restrictions. If Any:

W MC ORDER No. 7590-01 This 3!cnth Yr..t0-Date Cumuhtive II. Ilours in Report;n; Period 744 3.623 36,120

12. Nun 6er Of flours Reactor was Critical 0

2,795.1 21,865.9

13. Re:ctor Re,ene Shutdown ik.urs 744 801.6 3,219

14. Ilours Ge.terator On.Line 0

2,703.7 20,866.9 IS. Unit Reserve S':urdewn !!ours 408 465.6 476.4

16. Grow Therma En:r;> Gen: rated (3!'.sII) 0 7,415,693 52,488,849

17. Gross Eicerrieal Encr;y Generated n!bil 0

2,451,321 17,714,121 IS. Net E!cerrica! Ener;y Ger.erated (>!Wi!)

0 2,329,628 16, / 2o, M 6

19. Unit Senice Factor 0

74.6 57.8 54.8

~

87.5 59.1

20. U..it Au;!abi;ity Factor

21. Unit Capae:r3 Fact..r iU>in:: MDC Net) 0 73.7 q

22. Unit Capacit.s F.'etor iU>ia[2 DER Neti 0

70.0 3 I

23. Unit Ferced Oat,2 Rate O

L4 35.4

24. Shutdowns SeeJuled Oser Ne. o :.!onths T)fe. D.:te.:nd Duratmn of Each n NONE

25. If Shut Dawn \\t E: J Of Report Peri.J. Estinured Da:e cf Surrup:

Inne._16, 1979

26. Unit > In Test Statm it'rior :o Cum:nertal Or.-r S 0:

Foreea t -

Achiesed INITI\\L CR!!K \\L!TY N/A N/A INITI \\L I1.!.cTi: Cili

. N/L N/A CO\\1\\1f 'Cl \\L 0;':.i \\110N nLL N/A 2307 ]96 c,m,

PIFUELING INFORM /sTiON REQUEST Rancho Secc Unit 1 1.

Name of Facility:

March 1960 2.

Scheduled date for next refueling shutdown:

April 1980 3.

Scheduled date for restart following refueling:

4.

Technical Specification change or other license amendnent 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) d) Safety Equipment Testing (TS 3.3.3)

December 1979 Scheduled date(s) for submitting proposed licensing action:

5.

None Important licensing considerations associated with ref ueling:

6.

7.

Number of fuel assen.blies:

a) In the core:

177 b) In the Spent Fuel Fool:

122 8.

Present licensed spent fuel capacity:

579 Projected date of the last refueling that can be discharged 9.

1987 to the Spent Fuel Pool:

2307 i97

I st*

f 1

I NARRATIVE St': MARY OF Pl. ANT OPERATIONS Date 5-1 Reactor in cold shutdown making proposed modifications of additional reactor trip circuits.

5-8 USSRC issued order No. 7590-01, making proposed modifications mandatory.

5-18 Commenc.d Main Generator disassenbly to repair burned spots on r.tator iron and 5-year inspection.

PERSONNEL CHANCES RI:0UIRING REPORTING No personnel changes that require reporting in accordance with Technical Specifications Figure 6.9-2 were made in May, 1979.

MAJOR ITEMS OF SAFETY-RELATFD ?!AINTl: NANCE

1) Made an alteration to the pressurizer heater bundle closure (seal-welded flanges).

2) Replaced disc on valve 1!V-21517, pressurizer vent valve.

3)

Recorqued upper and lower manways /handholes on primary and secondary side of OTSG A and B.

4)

Rebuilt three snubbers which were found low on oil during snubber inspection.

SUIDIARY OF CHANGES MADE IN ACCORDANCE UITil 10 CFR 50.59 (b) 1)

Installed Io 'zation fire detectors in fire arean /134, 35, 39, 40 and 42.

2) Relocated existing vibration detectors on the southeast and northwest fence line to the new fence.

2307 198