ML19317E377

Monthly Operating Rept for Mar 1978

ML19317E377
Person / Time
Site:	Oconee
Issue date:	04/14/1978
From:	Reavis J DUKE POWER CO.
To:
Shared Package
ML19317E374	List: ML19317E373 ML19317E377 ML19317E380 ML19317E383
References
NUDOCS 7912170575
Download: ML19317E377 (8)

Text

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O OPERATING DATA REPORT DOCKET NO.

50-269 DATE ~ 4-14-78 COMPLETED BY J. A. Reavis TELEPHONE (704) 373-8552 OPERATING STATUS

1. Unit Name:

Oconee Unit 1 Notes

2. Reporting Period: March. 1978 Year-to-date and cumulative

3. Licenwd Thermal Power (Mht):

256g capacity factors are calcu-

4. Nameplate Rating (Gross MWe):

934 lated using a weighted aver-

5. Design Electrical Ratmg (Net MWe):

887 age for maximum dependable

6. Maximum Dependable Capacity (Gross MWe):

899 capacity

7. Maximum Dependable Capacity (Net MWe):

860

6. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons:

9. Power Level To Which Restricted. If Any (Net MWe):

10. Reasons For Restrictions. If Any:

This Month Yr.-to-Date Cumulative

11. Hours in Reporting Period 744.0 2,160.0 41,281.0

12. Number Of Hours Reactor Was Critical 736.2 2.152.2 29,891.3

13. Reactor Reserve Shutdown Hours

14. Hours Generator On-Lh -

727.8 2,143.8 27.565.5

15. Unit Reserw Shutdown Hours

16. Gross Thermal Energy Generated (MWH) 1.812.466 5,425,708 64,048,563

17. Gross Electrical Trcrgy Generated (MWH) 637,220 1,901,470 22,211,110

18. Net Electrical Er.ergy Generated (MWH) 609.218 1.817.540 20,994,467

19. Unit Service Factor 97.8 88.3 66.8

20. Unit Availability Factor 97.8 99.3 66.9 j

21. Unit Capacity Factor (Using MDC Net) 95.2 97.8 58.8

22. Unit Capacity Factor (Using DER Net) 92.3 94.9 57.3

23. Unit Forced Outage Rate 2.2 0.8 17.5

24. Shutdowns Scheduled Over Next 6 Months (Type. Date. and Duration of Each ):

None

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

26. Units in Test Status (Prior to Commercial Operation):

Forecast Achiesed INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPER ATION 7 912170 NI(of77)

INSTRUCTION rOR COMPLETING OPERATING DATA RL.RT Tha repon mould er furrushed ead month by h:ensees. The name and te:ephone numoet of the preparer snould be provid The number of the tne designated spaces. The mstruenons below are provided to assist li:ensees m repone; the data cons. stent!y mstruenon corresponds to the item numoer of the repon format.

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1. UNIT N AME. Self<xoianaton.

or of commer:t coeration whachever comes last. to the end of the penod or decommissionmg. whichever comes

2. REPORTING PERIOD. Des:gnate the month for wh:ch first. Adjustments m :lo:k hours should be made in the data are presented.

wiu;n a change from standard to dayi:cnt-savmts ume tor vice versa) occu s.

3 LICENSED THERMAL POWER e MW ):s the m:ximum t

thermal power expressed m megawatts. Currently auth.

12. NUMBER OF HOURS REACTOR WAS CRITICAL.

or:2ed by the Nuclear Regulatory Commission.

Show the total numoet of hours the reactor was ent: cal dunng tne gross hours of the reporting penod.

A NAMEPLATE RATING qGROSS MW,L The nameplate power designation of the turome-generator m meg:voit

13. REACTOR RESERVE SHUTDOWN HOURS. The total 2mperes (MVA) t:mes the nameplare power fa: tor of the number of hours dunng the gross hours of report:ng turome generator.

pened that the reactor was removed f cm senice for admirustranve or other reasons but was available for

5. DESIGN ELECTRICAL RATING (NET MW,i ts th' operation.

nommai net electn:21 output of the unit spenfied by the unhty and used for the purpose of plant desten.

It HOURS GENERATOR ON LINE.

Also :alled Service Hours. De total number of hours expressed to $e nes:-

6 MAXIMUM DEPENDABLE CAPACITY IGROSS MW,)

est tenth of an hour dunne 1e cross houts of the re-is the gross electncal output as measured at the output porttnc ceriod that the uf:it op'erated with breakers termmals of the turbme-generator dunna the most re-

losed'to' the stanon bus. These hours, plus those :isted stn:tive seasonal conditions.

m Urut Shutdowns for the generator outage hours, should

7. MAXIMUM DEPENDABLE CAPACITY (NET MW,).

Maximum dependable capacity (gross) less the normal

15. UNIT RESERVE SHLTDOWN HOURS. The total num-station service loads.

ber of hours expressed to the nearest tenth of an hour dunne the zross hours of the reporting period that the S. Self explanatory.

unit was refnoved from service for economic or similar reas ns but was available for operation.

9. POWER LEVEL TO WHICH RESTRICTED. IF ANY (NET MW ).

Note that this item is ;,ppheable only if

16. GROSS THERMAL ENERGY GENERATED (MWH).

e restncu ns n the power level are in efte:t. Short. term The thermal output of the nuclear steam supply system tiess than one month) hmitations on power level need during the gross hours of the reportmc pened, expressed

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not be presented m tius. tera.

in megawatt hours (no de::mals).

Smee this mformation :s used to deselop figures on capa-

17. GROSS ELECTRICAL ENERGY GENERATED (MWH).

city lost due to restneuens and because most users of the The electncal output of the unit measured at tne output "O'perstmg P' ant Status Report" are pnma ily mterested terminals or the turbme generator dunng the gross hours in energ'y actually fed to the distnbuuon system. it is requested that this figure be expressed m.51We-Net m of the reportmg penod, expressed in megawatt hours (no decimals).

spite of the fact that the figure must he denved from MWt or percent power.

18. NET ELECTRICAL ENERGY GENERATED (MWH).

10. REASONS FOR RESTRICTIONS. IF ANY. If item 9 The cross electrical output of the umt measured at the is used. item 10 mouM explain why. Bnef narrative is output terminals of the turbine-generator minus the nor-acceptable.

Cite references as appropnate. Indicate mai station service loads durm; the gress hours of the whether restn:tions are selfimposed on are regulatory reponmg penod expressed in megawatt hours. Negative requirements. Be as spectrie as poss:ble withm space hmi-quantines should not be used. If there is no net positive tanons. P! ants in stanup and power ascension test phase value for the penod. enter zero (no decimals).

should be identified here.

19. For umts still in the startup and power ascension test

11. HOURS IN REPORTING PERIOD. For umts m power

23. phase. items 19C3 shouid not be computed. Instead. enter ascension at the end of the penod, the gross hours from N/A in the current month column. These rive factors the begmning of.the penod or the first electn:al produc-should be computed statung at the time the umt is de-tion whichever comes !ast, to the end of the penod.

clared to be in commercial operation. The cumulative For umts m commere:al operation at the end of the rigures m the second and third columns should be based penod, the gross hours from the begmnmg of the penod on commercial operation as a startirg date.

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UNII SiltI1 DOWNS AND POWIR REDtfC110Ns DOCKF I NO. 50-269 UNil NAME Oconee I] nit I

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DAIE 4-14-18 COMPT.E TED HY J. A. ReayJs REPORT MON ill March. 1978 IELEPff0NE (704) 373-8552 "E

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Repin t f-8i0 E'"

Picsent Recurrence

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1 78-03-12 F

0 B

Cil PU)lPXX Reduced to change packing in 1-D 2 heater drain pump.

2 78-03-16 F

0 B

CH PUMPXX Reduced because of packing ptoblem on 1-D 2 heater drain pump.

3 78-03-26 F

8.52 G

3 ZZ ZZZZZZ While reducing for normal shutdown, the reactor tripped at 29% power because the switch to auxiliary power was not made soon enough.

4 78-03-27 F

0 D

RC FUEi,XX Xenon hold during loading.

5 78-03-28 F

7.68 B

3 IB INSTRU Reactor tripped due to flux flow imbalance caused by neutron error in controls when being placed in ante after calibration, g

6 78-03-29 F

0 D

RC FUELXX Xenon hold during loading.

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2 3

4 F: Forced Reason:

Method:

Exhibit G -Instinctions S: Scheduled A-I quipment Failure (Explain) 1 -Manual for Prep:uation of Data

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9 B Maintenance of Test 2-Manual Scram.

linto Sheets f oi 1.icemcc

'g C-Refueling 3 Automatic Stram.

Event Report (I l Ril sle tNIIRI G-D. Regulatory Restriction 4-01her (lisplain) 0161) g I Operator Training & 1.icense Examination F-Administrative 5

g' j G-Operational 1:s sor (Explain) l~xhibit 1 - Same Somse r" -

(9/77)

Il-Ot her ( Explain) g b

.IT SHUTDOWNS AND POWER REDUC" o.

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u 1.w"TRUCTIONS This report should des:nbe all plant snutdowns dunng the m a::ordance with the taele appearmg on tne report fer.

report penod. In addition it snould be tne sour:e of explan.

If :steg:ry 4 must be used. supply bnef :omments.

ation of ugmScant dips in average power :evels. Ea:n ugm-ficant reau:n >n tr. power leve! (greater than "Fe redu:non LICENSEE EVENT REPORT :. Referen:e the apou:acie in average 02:1y power level for tne pre:edmg ':4 hours) reportable o::urrence pensming to the outage or power snouic ce noted. esen though tne umt mas not have oeen reducuon. Enter the first tour parts (event year. sequentia.

snut down :ompletelyl For such redu:nons in power level.

report numoer. occunence : ode and repon type) of ee five the duranon shouid ce hsted as zero.the method of redu:non pan designauon as cescribed in item 17 ot Instru;nons ter should oc hsted 2: 4 (Omer). and the Cause and Corre:uve Preparauon of Data Entry Sheets for Licensee Event Report A:uon tc Prevent Recurrence :alumn should excism. The (LER) File (NCREG-0161). This mformanon may net be Cause and Corre:uve A:uen to Prevent Recurrence :olumn m: mediate!y endent for all such shutdowns. of : curse. sm;e should be used tc provide any needed explananon to fully runher mvestiganon may be reqmred to aseenam whether at des noe the tt:umstan:es of the outage or power reducuen.

not a reportable occurrence was mvolveda If the outage or power reducuan will not result m a reportacle occurrence.

NUMBER. This :olumn shou:d mdicate the set:uential num-the positive mdi:stion of this la:k of conelanon should Se cet asupe to each snutdown or s:gm$ cant redu:iian in power noted as no appii ade 6Ah for dat :aiencar year When a shu:: awn or s:g=S: ant power SYSTEM CODE. The system m wht:h the outage or pcwer reduenon begm> m ene repon senod anc ends m another reduction ongmated should be noted bv the two dig 2t : ode of an entry shouid be made for bom report penocs to be sure Exhioit G - Instru:ttens for Preparation of Data En'try Sheen aii snuidowns or acniS; ant power redu:nons are reported.

Lnul a umt has a:hieved its first power generation, no num-for Licen ee Event Recon (LER; File (NUREG 0161 h ber should oc asugned to each entry.

Systems dat do not fit any ex:stin- 'de should be designa-ted 11 The : ode ZZ should be u.

at those events where DATE. This column should mdicate the date of de start a system is not applicable.

cf each shutdown or s:cnincant power reducuon. Report as year. month, and day. August 14. lo~? would oc reported COMPONENT CODE. Select the most appropnate component as 70514 When a shutdown or s gnificant power redu:non from Exhibit i Instrucuons for Preparation of Data Entry begmsin one report pened and ends m another. an entry snould Sheets for Licensee Event Report (LER) File (NCREG Olo!).

be made for both report penods to be sure all shutdowns usmg the followmg :nueria:

or sicmil ant power redu:tions are reported.

TYPE. L se "F" or "S" to mdicate either "For:ed" or "S:2.e-duled." respecuvely, for each shutdown or s:gnificant powei B.

If not a component failure, use the related component reduction. Forced shutdowns meiude those required to be e.g.. wrons valve operated through errort list valve as minated by no later than the weekend followmg discovery ee'mponent.

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of an off. normal condinon. It is re:ogmaed that some judg-ment is required m :stegon:mg shutdowns m this way. In C.

If a chain of failures occurs. the first component to mat-general a forced shutdown is one dat would not have been function should be listed. The sequence of events.:nciud-compieted in the aosence of the :ondition for which orre:nve tng the other components wiuch fail, should be desenbec action was taxen.

under the Cause anc Corrective A:non to Prevent Recur-rence column.

DURATION. Seif explanatory. When a shutdown extends Components that do not fit any ex:stmg : ode should be de-beyond the end of a report penod. count only the time to the td R M.T'uw& 777777 M 'x M h end of the report penod and pick up the ensuing down time events where a component designation is not appiscable.

m the followmg report penods. Report duration of outages rounded to the nearest tenth of an hout to facilitate s.tmmation.

CAUSE & CORRECTIVE ACTION TO "REVENT RECUR.

The sum uf tne total outage hours plus the hours tae genera-RENCE. Use the :olumn in a narrative fashion to amplift er tot was on line should equal the gross hours in the reportmg explam the cir:umstances of the shutdown or power reduction pe nod.

The column should include the spe:ifi: :7use for each shut.

down or significant power reduction and 'he immediate and REASON. Categortie r3 letter degnation m ccorcance contemoisted ions term corrective action an. if appropr:-

with the taone arpearuh on the report form. If :stegory H ate. Th:s column'should also be used for a description of 2e must be usec. suppl > bne: comments.

maior safety-related correenve maintenance performed dunn; METHOD OF SHUTTING DOh> THE REACTOR OR the outage or power reduenon meiuding an identin:ation of REDUCING POWER.

Categonze ~ namner designauen the entiesi path activity and a repon or any smgle red:se o!

radioactmt) or smcie radiation exposure specifically associ.

INote that this um. trom the Edison Electric Institute ated with the outage which accounts for more than 10 percent (EEI) denmuons of " Forced Partial Outage" anc "S:ne.

oi the allowable annual values.

auled Parnal Outage." For these term >. F El uses a.hange of For lons textual reports continue narrative on separate paper 30 MM as the oreak pom: For mge. powei reactors.30 M%

and re:erence the shutdown or power redu non u im>

s w mall a.hange to aanant esp!anauun.

narrauve.

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AVERAGE D AILY UNIT POWER LEVEL DOCKET NO.

50-269 UNIT Oconee Unit 1

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DATE COMPLETED BY J. A. Reavis TELEPHONE (704)373-8552 March, 1978 MONTH DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

IMWe-Net) 864 864 37 2

862 16 864 859 864 3

4 860 864 20 5

863 862 6

865 858 864 849 7

,3 866 046 g

9 867 867 25 867 591 10 26 11 867 462

,7 816 517 12 28 862 620 13 865 827 14 30 865 860 15 3

838 INSTRUCTIONS On this format.hst the average daily unit power levelin MWr Net for each day in the reporting month. Compute to the nearest whole rnegawatt.

(9/77)

DOCKE7 NO: 50-269 UNIT: Oconee Unit 1 DATE: 4-14-78 1

NARRATIVE

SUMMARY

MOCH: March, 1978 f

Oconee Unit 1 began the month of March at near rated power. Power was reduced three (3) times during the month for maintenance on the 1D2 heater drain pump. This was done at 93% power on 3/12, 3/16, and 3/22.

On 3/26, while power was being reduced to come off line because of a j

generator ground, the reactor tripped due to pump monitor problems.

This caused a fast decrease in MWE and resulted in an improper change-over to the CT-1 auxiliary power supply.

On 3/28, after calibration of NI's and in the process of putting the controls back in auto, the reactor tripped on flux / flow imbalance because of a neutron error in the reactor diamond station that was not nulified fast enough on the manual station. This happened at 16:11 hrs.

1 The reactor was made critical again at 18:23 hrs. and the unit was on line at 23:52 hrs.

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MONTHLY REFUELING INFORMATION REQUEST 1.

Facility name:

Oconee Nuclear Station Unit 1 2.

Scheduled next refueling shutdown:

September 1, 1978 3.

Scheduled restart fol3owing refueling:

October 11, 1978 4.

Will ref seling or resumption of operation thereaf ter require a technical specification change or other license amendment?

Yes If yes, what will these be?

Amendment to incorporate technical speci-fications for Oconee Nuclear Station Unit 1 Cycle 5.

4 If no, has reload design and core configuration been reviewed by Safety Review Committee regarding unreviewed safety questions?

If no, when is review scheduled?

5.

Scheduled date(s) for submitting proposed licensing action and supporting information:

Aucust 1. 1978 6.

Important licensing considerations (new or different design or supplier, unr ;iewed design or performance analysis methods, significant changes in design or new operating procedures).

i 7.

Number of fuel assemblies (a) in the core:

177 (b) in the spent fuel pool: 180 8.

Present licensed fuel pool capacity:

306 in Oconee 1 & 2 pool Size of requested or planned increase:

No increase planned 9.

Projected date of last refueling which 'can be accommodated by present licensed capacity:

3/3/80

_ 78 4

DUKE POWER COMPANY Date:

Name of

Contact:

J. A. Reavis

19.' UNIT SERVICE FACTOR. Compute by dividmg hours the generator was on line (item 141 by the gross hoursin the reporting period (stem Ii). Express as percent to the nearest tenth of a percent. Do not include reserve shut-down hours in the calculation.

20. UNIT AVAILABILITY FACTOR. Compute by dividmg the unit available hours (item 14 plus item 15) by the gross hours in the reporting period (item 11). Express as percent to the nearest tenth of a percent.

21. UNIT CAPACITY FACTOR (USING MDC NET). Com-pute by disiding net electrical energy Fenerated (item 18) by the product of r.mimum dependable capacity (item

7) times the gross hours in the reportmg pened (item 11).

Express as percent to he nearest tenth of a percent.

22. UNIT CAPACITY FACTOR (USING DER NET ). Com-pute as in item 21. substituting design electrical ratmp (item 5) for maximum dependable capacity.

23. UNIT FORCED OUTAGE RATE. Compute by dividing the total forced outage hours (from the table in Unit Shutdowns and Power Reductions) by the sum of hours generator on line (item 14) plus total forced outage hours (from the table m Unit Shutdownsand Power Reductions).

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Express as percent to the nearest tenth of a percent.

24. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE. DATE. AND DURATION OF EACHl. Include type (refuehng, maintenance, other), proposed date of start of shutdown, and proposed length of shutdown.

It is recognized that shutdowns may be scheduled between reports and that this item may not be allinclusive. Be as accurate as possible as of the date the report is prepared.

This item is to be prepared each month and updated if appropnate until the actual shutdown occurs.

25. Self-explanatory.

26. Self explanatory. Note, however. that this information is requested for all units in startup and power ascer.sion test status and is not required for units already in com-mercial operation.

f TEST STATUS is defined as that period following ini-tial enticality during which the unit is tested at succes-sively higher outputs culminating with operation at full power for a sustained period and completion of war-ranty runs. Following this phase, the unit is generally considered by the utility to be available for commercial operation, i

Date of COMMERCIAL OPERATION is defined as the date that the unit was declared by the utility owner to be available for the regular production of electricity.

usually related to the satisfactory completion of quali-fication tests as specified in the purchase contract and to the accounting policies and practices of the utility.

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