ML20128C766

Monthly Operating Rept for Apr 1985

ML20128C766
Person / Time
Site:	Duane Arnold
Issue date:	04/30/1985
From:	Mineck D, Putnam K IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
DAEC-85-0379, DAEC-85-379, NUDOCS 8505280402
Download: ML20128C766 (9)

Text

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OPERATIPG DATA RER)RT DOCKET NO. 050-0331 DATE 05-15-85 CCNPLETED BY Kenneth S. Putnam TELEPHONE 319-851-7456 OPERATING STATUS Notes

-1. Unit Name Duane Arnold Energy Center

2. Report ing Period April, 1985

3. Licensed Thermal Power (MWt):

1658

4. Nameplate Rating (Gross MWe):

565 (Turbine)

5. Design Electrical Rating (Net MWe):

538

6. Maximum Dependable Capacity (Gross MWe):

54 5

7. Maximum Dependable Capacity (Not MWe):

515

8. If Changes Occur In Capacity Ratings (Items Number 3 Through 7) Since the Last Report, Give Reasons:

9. Power Level to Which Restricted, if Any (Not MWe):

.10. Reasons For Restrict ions, if Any:

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 719.0 2879.0 89807.0

12. Number of Hours Reactor Was Critical 0

773.8 63362.5

13. Reactor Reserve Shutdown Hours 0

0 150.3

14. Hours Generator On-Line 0

773.1 61620.8

15. Unit Reserve Shutdown Hours 0

0 0

16. Gross Thermal Energy Generated (MWH) 0 1005468 77465403

17. Gross Electrical Energy Generated (MWH) 0 335850 25923204

18. Not Electrical Energy Generated (MWH) 0 313652 24269804

19. Unit Service F6ctor 0

26.9 68.6

-20. Unit Availability Factor 0

26.9 68.6

21. Unit Capacity Factor (Using MDC Net) 0 21.2 52.5

22. Unit Capacity Factor (Using DER Net) 0 20.2 50.2

23. Unit Forced Outage Rate 0

0 10.8

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:

June, 1985 8505280402 850430

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(9/77) c :

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AVERAGE DALLY UNIT POWER LEVEL j

l DOCKET 70. 050-0331 UNIT Duane Arnold Energy Center DATE 05-15-85 '

COMPLETED BY Kenneth S. Putnam TELEPHOPE 319 -8 51-74 56 -

' MO NTH' April, 1985

. DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 0

17 0

2-0 18 0

3 0

19 0

4 0

- 20 0

5

-0 21 0

6 0-22 0

7 0

23 0

8-0 24 0

9 0

25 0

- 10 0'

26 0

11 0

27 0

13 -

0 28 0

13 -

0 29 0-14 0

30 0

15 0

31 16 0

1 NSTRUCT1076 On this format, list the average dally unit power level in MWe-tat for each day in the reporting month. Compute to the' nearest whole megawatt.

(9/77)

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Docket No.

050-0331 Unit Duane Arnold Energy Center Date 05-15-85 MAJOR / SAFETY RELATED MAINTENANCE Completed by Kenneth S.

Putnam Telephone 319-851-7456 DATE SYSTEM COMPONENT DESCRIPTION 4/02/85 Recirculation Piping Welds Completed induction Heat Stress improvement of heat-affected Zones of recirculation piping welds.

4/09, 4/11 Reactor Overpressure Protection Safety Relief Valves Duane Arnold Energy Center personnel were

& 4/16/85 notified by Wyle Laboratories that off-site lab testing of the safety relief valves had found that several of the valves were more than the Tech Spec prescribed limit be l ow the setpoint.

The Tech Spec setpoints are 1090, 1100, and 1110 psig.

Testing found setpoints of 1057, 1060, and 1075 respectively on first runs.

In addition, safety relief valve 4406 failed to resent under the test conditions. Dua ne Arnold Energy Center personnel are awaiting formal evaluation reports f r om Wyle Laboratories to determine if additional reporting r eq u i r eme nt s exist.

Wy le Laboratories will refurbish and recalibrate the valves for installation.

4/19/85 Main Steam Outboard Main Steam isolation Outboard Isolation Valves were taken ap a rt,

Valves inspected, refurbished, reassembled and leak rate tested.

4/1 to Torus Torus The torus was stripped, welds inspected, 4/30/85 repaired, and recoated.

Work was in progress t hr ou gho u t the mo n t h and essentially complete at the end of the month.

f Docket No. 050-Unit Duane Arnold Energy Ctr Date 05-15-85 Completed by Kenneth Putnam Telephone 319-851-7456 REFUELING INFORMATION

_1

.Name of facility.

A.

'Duane Arnold Energy Center 2

Scheduled date for next refueling shutdown.

A.

Currently In progress.

3.

. Scheduled date for restart following refueling.

'A.

June, 1985.

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

Yes.

oA. Reload license submittal.

B.

Additional MAPLHGR curves for new fuel bundles being Introduced for Cycle.8.

C.

Revised Spent Fuel Storage Technical Specifications.

D.

Supplemental Reload License submittal for Cycle 8 Lead Test Fuel Assemblies including MAPLHGR curves.

5.

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

A.

Submitted.and approved C.

Submitted and approved B.

Submitted and approved D.

Submitted and approved 6

Important'llconsing considerations associated with refueling, e.g.,

new aor different fuel design or supplier, unreviewed design or pe r f orma nce analysis methods, significant changes in fuel design, new operating

^

proced ur es.

5 GE Lead test assemblies which incorporate advanced fuel designs will be. loaded for Cycle 8.

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

A.

a) 0 b) 961 L.

- ;. x

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- Docket No. 055-0331 Unit Duane Arnold Energy Ctr Date - 0 5-15-8 5 l

Completed by Kenneth S. Putnam e

Telephone 319-8 51-74 56 r

' REFUEL I NG l > FORM AT I O N (Cont i nued I.

~ 8

~ The - present. I l consed _Isdent 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.-.

'A.

'2050 p_

'9 Tho' projected date of thE last. refueling that can be discharged to '. t h e

~ spent f ue l.: pool assuming _the present licensed capacity.

'A.

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' Docket No. 055-0331

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' Unit Duane Arnold Energy Ctr Date 05-15-85 LCompleted by Kenneth>$. Putnam.

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-Telephone 319-851-7456

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NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE

[04/0'l/85 1At the beginning of the month the Duane' Arnold Energy Center was continuing a Refuel Outage with the ' reactor vessel defueled..

04/23/85-At_0955 hours the reactor vessel head was in place on.the reactor vessel In preparation for draindown of the vessel to permit seal' welding on-the recirculation piping and other maintenance activities.

'04/24/85

. Seal welding of-two through wall defects was begun'In the Initial repair work for recirculation system piping.

(LER 8 5-010 update pending) d4/24/85 ;Four' objects were discovered in the jet pump annulus area during remote visuelainspection. A loose parts analysis is in pr og r es s.

04/25/85

.At'0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> a primary containment isolation of Group til valves and an auto-Initiation of the Standby Gas Treatment System occurred when power was

' Inadvertently removed from the Reactor Building ventilation radiation monitors.

(LER 85-012 pending)-

04/26/85 At 0920' hours a freeze seal in use on pl' ping on the reactor water cleanup bottom head drain line failed. The resultant fluid leakage of,approximatel y 700 gallons drained to the drywell drain' sump.

A mechanical seal was

. temporarily used to stop flow and level was fully restored within.30 minutes. No personnel contamination or safety hazard existed.

04/27/85 Atfl505 hours a deluge system unexpectedly actuated in the Reactor Building.

No fire existed and the deluge system was' Isolated within a few minutes.

04/28/85 At'0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> surveillance testing of the Standby Liquid Control System was in progress.

The_ testing included firing of the ex p l os i ve squib valves.

.When this stop of the test was performed, Indication lights f ailed to Indicate proper valve performance. Additional Investigation revealed that both valves had performed fully satisfactorily and that the problems that existed. wore purely Indication problems.

04/30/85 At'1025, while clearing lifted leads, a 1/2 amp fuse was found in ADS

= Initiation logic'where a 10 amp fuse belonged. Redundant initiation logic was available and alternate power to the circuit would have been available had the fuse-blown.

04/30/85 At the end of the month the plant was continuing its refuel outage with all fuel out of the vessel.

f r

i Iowa Electric. Light and Ibwer Company May 15, 1985 h

DAEC 0379 Director, Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Attn: Document Control Desk

Subject:

Duane Arnold Energy Center Docket No. 50-331 Op. License DPR-49 April, 1985 Monthly Operating Report

Dear' Sirs:

Please find enclosed 12 copies of the Duane Arnold Energy Center Monthly

. Operating Report for April,1985.

The report has been prepared in accordance with the guidelines of Regulatory Guide 1.16 and distribution has been made in accordance with DAEC Technical Specifications, Appendix A, Section 6.11.1.c and Regulatory Guide 10.1.

Very truly yours, g

b Daniel L. Mineck Plant Superintendent - Nuclear Duane Arnold Energy Center Enclosures File A-118d, TE-5 cc: Director, Office of Inspection Mr. Phillip Ross and Enforcement U. S. Nuclear Regulatory Comission U. S. Nuclear Regulatory Commission Maryland National Bank Building Region III Washington, D. C.

20555 799 Roosevelt Road Glen Ellyn, IL 60137 (1)

NRC Resident Inspector Director, Office of Management and Mr. Dennis Murdock Program Analysis Central Iowa Power Cooperative U. S. Nuclear Regulatory Commission Box 2517 Washington, D. C. 20555 (1)

Marion, IA 52302 U. S. Nuclear Regulatory Commission Mr. Russ Gamble l

ATTN: Mr. M. Thadani Corn Be:t Power Cooperative Phillips Building 1300 13th Street North Washington, D. C. 20555 Humboldt, IA 50548 f

INP0 Records Center 1100 Circle 75 Parkway Suite 1500 Atlanta, GA 30339

$$ AY Duane Arnold Energy Center e l'.0. Box 351 e Cedar llapids, Iowa 52406 e 31918517611

)

3 p; t

y May 15,1985 T0:

B..Peterson-

'J. Rehnstrom

', R. McGaughy/ Ward H.. Rehrauer E'. Matthews W. Bryant

' R. Salmon

0. Wilson.

R.~ Hannen C. Mick D. Vest (3 copies)

E. Root P. Seckman -

,W. Nodean-D. Poetting FROM:

.D. Mineck

. Plant Superintendent - Nuclear FILE: A-118d, TE-5 Please find' attached one copy of' the Monthly' Operating Report for - April, 1985, that:has.been transmitted to the NRC.

kp*