1CAN098608, Monthly Operating Rept for Aug 1986

Monthly Operating Rept for Aug 1986

ML20207D638
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/31/1986
From:	Enos J, Gobell J ARKANSAS POWER & LIGHT CO.
To:	Bassett H NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
1CAN098608, 1CAN98608, NUDOCS 8612310132
Download: ML20207D638 (7)

Text

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1 OPERATING DATA REPORT D0CKET NO:

50-313 DATE:

August, 1986 COMPLETED BY:J. N. GoBell TELEPHONE:

(501)964-3251 i

OPERATING STATUS 1.

Unit Name:

Arkansas Nuclear One - Unit 1 2.

Reporting Period:

Augsut 1-31, 1986 3.

Licensed Thermal Power (MWt):

2,568 4.

Nameplate Rating (Gross MWe):

902.74 5.

Design Electrica. Rating (Net MWe):

850 6.

Maximum Dependable Capacity (Gross MWe):

883 7.

Maximum Dependable Capacity (Net MWe):

836 8.

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):

~616 MWe (~76%)

10.

Reasons For Restrictions.

If Any:

Apparent high operating level in the "A" steam generator caused by fouling at the tube support plate crevice MONTH YR-TO-DATE CUMULATVE 11.

Hours in Reporting Period....

744.0 5,831.0 102,570.0 12.

Number of Hours Reactor was Critical.....................

744.0 5,388.5 71,051.8 13.

Reactor Reserve Shutdown Hours........................

0.0 0.0 5,044.0 14.

Hours Generator On-Line......

744.0 5,370.0 69,628.1 15.

Unit Reserve Shutdown Hours..

0.0 0.0 817.5 16.

Gross Thermal Energy Generated (MWH)........................

1,432,089.0 10,993,873.0 163,581,097.0 17.

Gross Electrical Energy Generated (MWH)..............

483,525.0 3,745,980.0 54,180,705.0 18.

Net Electrical Energy Generated (MWH)..............

457,180.0 3,551,215.0 51,604,092.0 19.

Unit Service Factor..........

100.0 92.1 67.9 20.

Unit Availability Factor.....

100.0 92.1 68.7 21.

Unit Capacity Factor (Using MDC Net)..............

73.5 72.8 60.2 22.

Unit Capacity Factor (Using DER Net).......

72.3 71.6 59.2 23.

Unit Forced Outage Rate......

0.0 7.9 14.2 24.

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

A 13 week refueling outage is scheduled to begin September 3, 1986.

25.

If Shut Down At End of Report Period.

Estimated Date of Startup:

26.

Units in Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION 8612310132 860831 DR ADOCK 05000313

'-+r Y

PDR r

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO:

50-313 UNIT:

One DATE:

August, 1986 COMPLETED BY: J. N. Go8 ell TELEPHONE:

(501)964-3251 MONTH. August DAY-AVERAGE DAILY POWER LEVEL (MWe-Net) 1.............

616 2.............

-617 3.............

619 4.............

618 5.............

617 6.............

619 7.............

619 8.............

620 9.............

621 10............

621 11............

620 12............

620 13............

619 14............

615 15............

616 16............

555 17............

553

'18............

619 19............

618 20............

613 21............

617 22............

621 23............

622 24............

621 25............

620 26............

618 27............

616 28............

618 29...........

620 30............

621 31............

621 AVGS:

615 INSTRUCTION On thir format, list the average daily unit power level in MWe-Net for each day in reporting month.

Compute to the nearest whole megawatt.

NRC MONTHLY OPERATING REPORT OPERATING

SUMMARY

~

AUGUST.1986-UNIT ONE Unit One started the month of August operating at 75.5% power.

The unit was-limited to this power due to a high level in the "A" steam generator.

At 2008 hours0.0232 days <br />0.558 hours <br />0.00332 weeks <br />7.64044e-4 months <br /> on the sixteenth, power was reduced to 40% due to a spurious control rod drive (CRD) in-limit signal.

At 0155 hours0.00179 days <br />0.0431 hours <br />2.562831e-4 weeks <br />5.89775e-5 months <br /> on the seventeenth power was increased, and at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> the unit was back up to 75% power.

Again at 1913 hours0.0221 days <br />0.531 hours <br />0.00316 weeks <br />7.278965e-4 months <br /> on the seventeenth, a spurious CRD in-limit signal caused a power reduction.

The power was held at 60% power until 1937 hours0.0224 days <br />0.538 hours <br />0.0032 weeks <br />7.370285e-4 months <br /> on the seventeenth when a power escalation was initiated.

The unit was back to 75% power at 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br /> on the seventeenth.

At 0659 hours0.00763 days <br />0.183 hours <br />0.00109 weeks <br />2.507495e-4 months <br /> on the twentieth, power was reduced due to main feedwater pump speed control problems.

The unit was back to 75% power at 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br /> on the twentieth.

Unit One ended the month operating at 75.3% power.

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT FOR AUGUST, 1986 1

DOCKET NO' 50-313 UNIT NAME-ANO Unit 1 DATE August, 1986 COMPLETED BY' J. N. Go8 ell TELEPHONE 501-964-3251 Method of

-Licensee Cause & Corrective.

2 Shutting

. Event System Component

Action to-Duration No.

Date Type (Hours)

Reason 2 Down Reactor 3 Report #

Code 4 Codes Prevent Recurrence 8606 8/16/86 F

0 A

5 N/A AA Z1 Spurious signal for the control rod drive in-limit position.

8607 8/17/86 F

0 A

5 N/A AA Z1 Spurious signal for the control rod drive in-limit position.

1 2

3 4

F:

Forced Reason:

Method:

Exhibit G - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram.

Entry Sheets for Licensee C-Refueling 3-Automatic Scram.

Event Report (LER) File (NUREG-D-Regulatory Restriction 4-Continuation 1022)

E-Operator Training &

5-Load Reduction License Examination 9-Other 5

F-Administrative Exhibit I - Same Source G-Operational Error (Explain)

H-Other (Explain)

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT FOR AUGUST, 1986 DOCKET NO 50-313 UNIT NAME ANO Unit 1 DATE August, 1986 COMPLETED BY J. N. GoBell TELEPHONE 501-964-3251 Method of Licensee Cause & Corractive Duration Shutting Event System Component

-Action to No.

Date Tyge (Hours)

Reason 2 Down Reactor 3 Report #

Code 4 Code 5 Prevent Recurrence l

8608 8/20/85 F

0 A

5 N/A SJ SC Main feed pump speed control problems.

Placed pump in manual control to stabilize.

1 2

3 4

F:

Forced Reason:

Method:

Exhibit G - Instructions S:

Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram.

Entry Sheets for Licensee C-Refueling 3-Automatic Scram.

Event Report (LER) File (NUREG-D-Regulatory Restriction 4-Continuation 1022)

E-Operator Training &

5-Load Reduction License Examination 9-Other 5

F-Administrative Exhibit I - Same Source G-Operational Error (Explain)

H-Other (Explain) l

y e

DATE: August, 1986 REFUELING INFORMATION 1.

Name of facility:

Arkansas Nuclear One - Unit 1 2.

Scheduled date for next refueling shutdown.

September 3, 1986 3.

Scheduled date for restart following refueling.

December 1986 4.

Will refueling or resumption of operation thereafter require a technical specification change or other license amendment?

If answer is yes, what, in general, will there 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 unreviewed safety questions are associated with the core reload (Ref. 10 CFR Section 50.59)?

Yes. _leload Report and associated proposed Technical Specification chanta request.

5.

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

September, 1986 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.

None 7.

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

a) 177 b) 384 (plus 64 new assemblies) 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 assemblies, present 988 increase size by 0 9.

The projected date of the last refueling that can be discharged te the spent fuel pool assuming the present licensed capacity.

DATE:

1998

(

O ARKANSAS FOWER S LIGHT COMPANY POST OFFICE BOX 551 UTTLE ROCK. ARKANSAS 72203 (501) 371-4000 September 15, 1986 1CAN098608 Mr. Harold S. Bassett, Director Division of Data Automation and Management Information Office of Resource Management U. S. Nuclear Regulatory Commission Washington, D. C.

20555

SUBJECT:

Arkansas Nuclear One - Unit 1 Docket No. 50-313 License No. DPR-51 Monthly Operating Report

Dear Mr. Bassett:

The Arkansas Nuclear One - Unit 1 Monthly Operating Report for August 1986 is attached.

Very truly your,

ll f,r ~

Nuclear,Eii s, Manager Ted ngineering and Licensing JTE: MCS: sg Attachment cc:

Mr. Robert D. Martin Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011 Mr. James M. Taylor, Director Office of Inspection and Enforcement dff U. S. Nuclear Regulatory Commission Washington, DC 20555 J

MEMBEA MiOOLE GOUTH UTILITsES SYSTEM