ML19345G266

Monthly Operating Rept for Feb 1981

ML19345G266
Person / Time
Site:	Rancho Seco
Issue date:	03/10/1981
From:	Colombo R SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19345G265	List: ML19345G264 ML19345G266
References
NUDOCS 8103170649
Download: ML19345G266 (6)

Text

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SUMMARY

OF PLANT OPERATION 2-01 to 2-16

~ Continued plant shutdown for fourth refueling outage.

2-17 Commenced STP-227 for core refueling.

F 2-26 Completed core refueling.

1 2-17-to 2-28 Performed routine surveillance and preventive maintenance items

-associated with the 1981 refueling.

MAJOR ITEMS OF SAFETY-F. ELATED MAINTENANCE

' 1)

Removed and replaced air start motors on diesel generators.

2) -Reset timer on reactor building spray pump.

3) ' Performed ' annual preventive maintenance of emergency diesel generators.

i 4)

Reset torque switch on safety features valve in CCW system.

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5)

Rewired trip coils in. plant switch gear. Tested same per EM procedure.

~

6). Modified supply and exhaust fans on diesel generators to activate per new setpoints.

7)

Replaced CRDM flange gaskets.

PERSONNEL CHANGES REQUIRING REPORTlHG

^ No personnel changes that require reporting in accordance with Technical Specifications Figure 6.9.2 were made in February, 1981/

SUMMARY

'0F CHANGES IN ACCORDANCE WITH 10 CFR 50.59(b)

- 1) The' California Highway Patrol has informed SMUD that it has been in violation of state law whenever the Emergency "ehicle was used.

An-agreement was made between SMUD and the Highway Patrol-that.wou!d allow SMUD to use the Emergency Vehicle if certain. conditions.are met.

These conditions and an explanation for the change are being included in-the Emergency Plan.

^The change.toiAP'500 indicated th'e' conditions under which the ambulance

-can be used. The plant personnelavill be instructed to use the substitute carrier described in AP 500 if all the requirements specified cannot be met.

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SUMMARY

OF CHANGES IN ACCORDANCE WITH 10 CFR 50.59(b) (Concinued)

2) The design which provides normal motive and control power for the Pressurizer PORV PSV-21511 was upgraced in order to enable the operator to control the operation of the PORV when offsite power is not available.

To orovide this capability, power to battery charger H4BE

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will be supplied from Class IE MCC S2A1.

1he ? position selector switch on Panel H4Pl01 was changed to a 4-position selector switch for manual or automatic operatior, of the PCRV and relocated to panel HIRC.

3) Modified internals vent valve jack screw locking device. The new Jack screw lock design provides for locking the jack screw by crimpinq a locking cup in two places, 180 apart, to a sleevi which is shrunken to fit the jack screw. The locking cup is supported and positioned by a block. The block is secured to the vent valve top retaining ring by high-strength socket-head cap screws which are locked in turn by crimped locking cups, This design provides a solid locking device, and it climinates the U-cover, spring retainer, spring, key ring, pressure plate, and socket-head cap screws.

4)

Installed and connected circuits to new station service transformer, X-43B2, and disconnected cables and bus duct presently connecteo to X438. This change enables the routing of circuits to X43B2 so they Co not have to pass through the mezzanine corridor and assure that a design basis fire occurring in the mezzanine corridor will not prevent a safe shutdown and cooldown.

5) Upgraded design to providn power and control to the pressurizer PORV block valve, HV-21505, in order to enable the operator to control operation of the valve when off-site power is not available.

The power ard control supplies for the PORV block valve were changed from normal MCC bus, 202, to safety-related MCC bus, 281, which can receive power f rom the of f-site source or f rom diesel generators when of f-site power it not available.

Safety grade devices are used for tha power and control connections to MCC bus 2Bl.

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OPERATING DATA REPORT DOCKET NO.40-117 D\\TE 0t-ni-?R CO3!PLETED BY R. t/. Colombo TELEPliONE f4'M 442-3211 OPERATING STATUS

1. Urdt N:,e: Ranpho Seco Uni t 1 Notes Cont,nued plant shut-down

2. Reportin; Period:

February. 1981 i

3. Licensed Thermal Power (Mht):

2 772

4. Nameplate Ratin; # Gross MWe):

963

5. Design Ele:trical Ratin;(Net MWei: 9IO

6. Maximum Dependable Capacity (Gress MWe): 417

7. Max: mum Dependable Carac;ty (Net MWe):

873

8. If Changes Occur in Capacity Ratings (Items Number 3 Throu;h 7) Since Last Report. Gise Reasons:

N/A

=

9. Pcwer Level To which Restricted, if Any (Net MWe):

N/A 10.' Reasons For Restrictions. If Any:

N/A This Month Yr.-to-Date Cumulatise a

- II. Hours In Reporting Period 672 1,416 51,457

12. Number Of Hours R: actor Was Critica!

0 740.2 12.21f.L

13. Reactor Res:rve Shutdown Hours 0

0 4. 46 :1d_,

14. Hours Generator On Line 0

721.3 30.966.9

15. Unit Resene Shdtdown Hours 0

0 1.210.2

16. Gross 1herraal Ener;y Generated DIWH) 0 1.994.850' 78.o67.105

17. Gross Electrical Energy Generated (MWill 0

670.368 26.618.082

- 18. Net Electrical Energy Generated (Mh H) 0 639.724 25.165.849

19. Unit Se. % Factor

'O 50.9 60.2

20. Unit Assitabi!ity Factor 0

50.9 62.5

21. Unit Capacity Factor U>in; MDC Nett O

C1.8 56.0

22. Unit Capacity Factor IU>ing DER Net) 0 44.2 91.1

23. Unit Forced Outap Rate 0

0 28.5

24. Shutdown > Seheduled Oser Nest 6 Months (Type.Date.and Duration of Each1:

N/A

25. If Shut Down At End O! Repart Period Esti:nated Date of Startup:

Mav-1081

26. Uc.ih in T<at StaruuPrior o Co:mnereel Opration1:

Forecast Achiced INITI\\L CRillCALITY N/A N/A INITIAL El FCTRIC ITY N/A N/A CO\\l\\lLRCIAL OPTR \\ IION N/A P00R BR ENLL -

REFUELING INFORMATION REQUEST 1.

Name of Facility:

Rancho Seco Unit 1 2.

Scheduled date for next refueling shutdown:

April. 1982 3.

Scheduled date for restart following refueling:

May. 1981 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)~

j 2

5.

Scheduled date(s) for submitting proposed licensing action:

March. 1981 6._Importantlicensingconsiderationsassociatedwith' refueling $

None 7.

Number of fuel assemblies:

a) In the core:

177 b) In the Spent Fuel Pool:

196 8.

Present licensed spent fuel capacity:

579 9.

Projected date of the last refueling that can be discharged to the Spent Fuel Pool:

1987 9

9 o

AVERAGE DAILY UNIT POhER LEVEL DOCKET NO.

50-312 UNIT Rancho Seco Unit 1 OI'2-20 DATE COMPLETED BY

_R_:,W. Colombo TELEPHONE (916) 452-3211 MONTH Februnrv. 1981 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net!

OfWe-Net; I

O 37 0

2 0

13 0

'3 0

19 0

4 0

20 0

5 0

0 y,

6 0

22 0

7 0

23 0

8 0

24 0

9 0

25 0

-10 0

26 0

~11 0

27 0

v.

12 0

28

-0 13 0

29 14 0

30 15' O

3t 16' O

INSTRUCTIONS On this format. list the aserage daily unit po ser lesciin MWe Net for each day in the reporitng nmn h. Compute to the fle2 rest whole cwpwatt.

e e

+=+ha

-=_ _.

m v -

m - - -- - -

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s DOCKET NO. 50-312 UNITSHUTDOWNS AND PpWER REDUCTIONS UNIT NAME Rancho Seco Unit 1 DidE 81-02-28 COMPLETED IlY R.

U.

rninmbo

' REPORT MONTH Fohrnarv 1981 TELEP!!ONE (916) 4's -321;

.y

.E ?

g

.E' ~

Licensee h

Cause & Corrective

~

o No.

Date g

g jge E ent g'g pU -

Action to H

~5 Report #

mV Prevent Recurrence u

g o

.N/A.

N/A

. N/A 4th refueling outage conynenced at 1

81-02-01 S

672 C

1 0001 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> on 1-31-81 t

l l

i

'4 I

~

2 3

4 F: Forced Reason:

Method:

Exhibit G Instructions f

S: Scheduled A Equipment Failure (Explain) 1 Manual for Preparation of Data flataintenance or Test 2 Manual Scrarn.

Entry Sheets for Licensee

( r<cfueling 3 Automatic Scram.

Event ReporI(LER) File (NUREG-D Itegulatory Restriction 4 Other (Explain) 0161)

E Operator Training & License Examination F Administrative 5

G Operational Errur (Explain)

Exhibit ! Same Souree (9/77) 1101her (Explain)

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