ML20027E725

Monthly Operating Rept for Jul 1981.Narrative Summary Encl

ML20027E725
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/14/1981
From:	Bramlett L, Gertsch J ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML20027E721	List: ML20027E720 ML20027E725
References
NUDOCS 8211150652
Download: ML20027E725 (6)

Text

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• AVERAGE DAILY UNIT POWER LEVEL.

DOCKET NO. 50-313 UNIT I DATE 8/14/81 COMPLETED BY L. S. Bramlett TELEPHONE (501) 968-2519 MONTH July DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net) IMWe-Net) 1 787 17 0 2 792 18 0 3 791 19 0 4 797 20 0 5 791 21 0 6 798 .

22 0 7 805 23 0 i 8 591 24 0 t 9 446 25 0 10 797 26 0 1I 798 27 1 12 797 28 468 13 796 -

29 757 14 753 30 804 15 0 3 804 I6 0 INSTRUCTIONS On this format. list the aserne daily unit pimer leselin MWe-Net for each da) in the reporiing month. Compute to the nearest whole megawatt.

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' 821115'0652 810814 PDR ADOCK 05000313 R PDR

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OPERATING DATA REPORT DOCKET NO. 50-313 DATE 08/14/81 COMPLETED BY _L. S. Bramlett TELEPilONE 501-063 310 OPERATING STATUS NIY".3/ Y8 Notn

1. Unit Name: Arkansas Nuclear One - Unit 1 July 1 - 31,1981

2. Reporting Period:

3. Licensed Thermal Power (MWt): 2568

4. Nameplate Rating (Gross MWe):

902.74 850

5. Design Electrical Rating (Net MWel:

003

6. Maximum Dependable Capacity (Gross MWe):

~

7. Masimum Dependable Capacity (Net MWe):

836 l

8. If Changes Occur in Capacity Ratings (items Number 3 Through 7) Since Last Report. Gise Reasons:

NONE Net MWe): None

9. Power Lesel To Which Restricted.!f N Any (/A

10. Reasons For Restrictions. If Any:

This Month Yr.-to Date Cumulatise 744.0 5087.0 58002.0 -

i1. Ilours In Reporting Period 439.4 3007.6 38797.9

12. Number Of liours Reactor Was Critical 0.0 149.0 5044.0

13. Reactor Resene Shutdown flours 37958.3 424.1 2913.3 14.11ours Generator On-Line 0.0 0.0 817.5

15. Unit Resene Shutdown liours

16. Gross Thermal Energy Generated (MWli) 1030869.0 7115822.0 91287788.0 336769.0 2370875.0 30069436.0

17. Gross Electrical Energy Generated (MWii) 320785.0. 2263743.0 28679382.0

18. Net Electrical Energy Generated (MWH) 57.0 57.3 65.4

19. Unit Senice Factor 57.0 57.3 66.9

20. Unit Availability Factor -

51.6 53.2 59.1

21. Unit Capacity Factor (Using MDC Net) 50.7 52.4 58.2

22. Unit Capacity Factor (Using DER Neti 43.0 11.4 16.9

23. Unit Forced Outage Rate

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

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

26. Units in Test Status (Prior to Commercial Operationi: Forecast Achiesed INITI A L CRlIlCA LITY INITI A L ELECTRICI FY COMMERCI A L OPER ATION (9/77 )

REFUELING Ih70RMATION . .

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1. Name of facility. Arkansas Nuclear One - Unit 1

2. Scheduled date for next refueling shutdown. 1/1/83

3. Scheduled date for restart following refueling. 3/15/83

4. Will refueling or resumption of operation thereaf ter require a technical specification change or other license amendment?

If answer is yes, what, in general, will these be?

If answer is .no,' has the reload fuel design and core configuration been reviewed by your Plant Safety Review Committee to determine whether any unrcviewed safety questions are associated with the core reload (Ref. 10 CFR Section 50.59)?

Yes. Reload report and associated proposed Technical Specification changes. Also, the safety analysis of eight demonstration high burn-up assemblies will be provided.

5. Scheduled date(s) for submitting proposed licensing action and supporting information. 10/1/82 p 6. Important licensing considerations associated with refueling, e.g.,

new or different fuel design or supplier, unreviewed design or performance analysis methods, significant changes in fuel design, new operating procedures.

Will reload 72 fresh fuel assemblies and operate for approximately 16 months. Eight of which will be high burn-up test assemblies.

7. The number of fuel assemblies (a) in the core and (b) in the spent fuel storage pool. a) 177 b) 244

8. The present licensed spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been requested '

or is planned, in number of fuel assemblics.

present 589 increase size by 0 l 9. The piojected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capacity.

DATE: 1986

NRC MONTHLY OPERATING REPORT i

OPERATING sum 1ARY - JULY 1981 UNIT I Unit One began the month at 96.7% full power - in a power limited condition due to the downcomer water level of the "A" OTSG. A gradual reduction in the "A" OTSG downcomer water level allowed power to be increased to 99.24% on July 7, 1981. On July 8, 1981, Unit One reactor tripped on high RCS pressure when the "A" MFW pump tripped on low suction pressure. The unit resumed 100% full power operations on July 9, 1981, and continued there until July 15, 1981. On July 15 Unit One was brought to cold shutdown to repair a leaking manway on the primary side of the "A" OTSG. Heatup of Unit One began on July 27, 1981, af ter repair of the "A" OTSG and 100% full power was attained July 29, 1981. Unit One continued to operate at 100% full power through the end of the month.

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DOCKET NO. 50-313 UNIT SilUTDOWNS kND POWER REDUCTIONS UNIT N AME ANO - Unit 1 DATE August 3, 1981 COMPLETED BY J. Certsch July REPORT MONTil TELEPHONE (501) 968-2519

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, }Eg 3 Y! Licensee 5to  !t Cause & Conective No. Date g f, ,g g & Event u? S3 Action to

• $E 5 N0 j di g Report #

fU Prevent Recurrence 6

81-08 810708 F. 6.3 11 3 N/A Cll PUMPXX Rx tripped on 1.igh RCS pressure when "A" MFW pump tripped on low suction pressure. Cause unknown. Three condensate pumps on line vice two.

81-09 810715 F 298.3 A 1 N/A CC llTEXCll Rx to cold shutdown for repair of leaking manway on primary side of "A" OTSG. Repaired manway.

I 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions S: Scheduled A-Equip:nent Failure (Explain) 1 -Manual for Preparation of Data B-Maintenance of Test 2-Manual Scram. Entry Sheets for Licensee C Refueling 3-Automatic Scram. Event Report (LER) File (NUREG-D Regulatory Restriction 4-Continuation 0161)

E-Operator Training & License Examination 5-Load Reduction F-Administrative 5 9-Other Exhibit 1 - Same Source G-Operational Error (Explain) 01/77) ll Other (Explain)

. 1

UNIT SHUTDONNS AND POWER REDUCTIONS ,

INSTRUCTIONS This report should describe all plant shutdowns during the in accordance with the table appearing on the report l'orm.

report period. In addition,it should be the source of explan- If category 4 must be used, supply brief comments.

ation of significant dips in average power levels. Each signi-LICENSEE EVENT REPORT e. Reference the appheable ficant reduction in power level (greater than 207c reduction reportabic occurrence pertaining to the outage or power in average daily power level for the preceding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />) reduction. Enter the first four parts (event year, sequentui should b'e noted, even though the unit may not have been report number, occurrence code and report type) of the fne shut down completelyI . For such reductions in power level, part designation as described in item 17 of Instructions im the duration should be listed as zero,the method of reduction Preparation of Data Entry Sheets for Licensee Event Repori should be listed as 4 (Other), and the Cause and Corrective (LER) File (NUREG-0161). This information may not be Action to Prevent Recurrence column should explain. The immediately evident for all such shutdowns, of course. smce Cause and Corrective Action to Prevent Recurrence column further investigation may be required to ascertam whether or should be used to provide any needed explanation to fully not a reportable occurrence was involved.) If the outage or describe the circumstances of the outage or power reduction.

power reduction will not result in a reportable occurrence.

the positive indication of this lack of correlation should be NUMBER. This column should indicate the sequential num.

noted as not applicable (N/A).

her assigned to each shutdown or significant reduction in power for that calendar year. When a shutdown or significant power SYSTEM CODE. The system in which the outage or power reduction begins in one report period and ends in another. reduction originated sh'ould be noted by the two digit code of en entry should be made for both report periods to be sure Exhibit G - Instructions for Preparation of Data Entry Sheets all shutdowns or r,gmficant power reductions are reported. for Licensee Event Report (LER) File (NUREG4)l61).

Until a umt has achieved its first power generation, no num-ber should be assigned to each entry. Systems that do not fit any existing code should be designa.

ted XX. The code ZZ should be used for those events where DATE. This column should indicate the date of the start a system is riot applicable.

of each shutdown or significant power reduction. Report as year, month, and day. August 14,1977 would be reported COMPONENT CODE. Select the most appropriate component as 770814. When a shutdown or significant power reduction from Exhibit 1 - Instructions for Preparation of Data Entr>

beginsin one report period and ends in another, an entry should Sheets for Licensee Event Report (LER) File (NUREG-Olbl1.

be made for both report periods to be sure all shutdowns using the following critieria:

or significant power reductions are reported.

TYPE. Use "F" or "S" to indicate either " Forced" or " Sche- ~

duled." respectively, for each shutdown or significant powe' B. If not a component failure, use the related component.

reduction. Forced shutdowns include those regmred to be e.g.. wrong valve operated through error; list valve as initiated by no later than the weekend following discovery component.

of an off-normal condition. It is recognized that some judg-ment is required in categorizing shutdowns in this way. In C. If a chain of failures occurs. the first component to mal-general, a forced shutdown is one that would not have been function should be listed. The sequence of events. melud-completed in the absence of the condition for which corrective ing the other components which fail, should be described action was taken. under the Cause and Corrective Action to Prevent Recur.

rence column.

DURATION. Self-explanatory. When a shutdown extends Components that do not fit any existing code should be de-beyond the end of a 4eport period. count only the time to the signated XXXXXX. The code ZZZZZZ should be used for end of the report period and pick up the ensuing down time events where a component. designation is not applicable in the following report periods. Report duration of outages rounded to the nearest tenth of an hour to facilitate summation. CAUSE & CORRECTIVE ACTION TO PREVENT RECUR-The sum of the total outage hours plus the hours the genera. RENCE. Use the column in a narrative fashion to amplifs m '

tor was on line should equal the gross hours m the reporting explain the circumstances of the shutdown or power reduetion .

penod. The column should include the specific cause for each shut

• " ' N" "'I"** " """ ""** ""

REASON. Categorite by letter designation in accordance contemplated long term corrective actiorr taken, if appropo-with the table appearing on the report form. If category 11 ate. This column should also be used for a description of the must be used. supply brief comments. major safety.related corrective maintenance performed dunny the outage or power reduction including an identification of METilOD OF SHUTTING DOWN THE REACTOR OR the critical path activity and a report of any single release or REDUCING POWER. Categorite by number designation radioactivity or single radiation exposure specifically associ.

INote that this differs from the Edison Electric Institute sted with the outsge which accounts for more than 10 percent (EEI) definitions of " Forced Partial Outage" and " Sche, of the allowable annual values.

duled Partial Outage." For these terms. eel uses a change of For long textual reports continue narrative on separate paper 30 MW as the break point. For larger power reactors.30 MW and reference the shutdown or power reduction for this is too small a change to wanant explanation. narrative.