ML20127C920

Monthly Operating Rept for May 1985

ML20127C920
Person / Time
Site:	Duane Arnold
Issue date:	05/31/1985
From:	Mineck D, Putnam K IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:	NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
DAEC-85-0500, DAEC-85-500, NUDOCS 8506240060
Download: ML20127C920 (8)

Text

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O OMRATING DATA REFORT DOCKET NO. 050-0331 DATE 06-15-85 C04 ftETED BY Kenneth S. Putnam TE'.E F110E 319-851 -74 56 ORRATING STATUS Notes

1. Unit Name Duane Arnold Energy Center

2. Reporting f%rlod Ma y, 1985

3. Licensed Thermal Fbwer (Wt):

1658

4. Nameplate Rating (&oss We):

565 (Tirbine)

5. Design Electrical Rating (Not We):

538

6. Maximum Dependable Capacity (&oss We):

54 5

7. Maximum Dependable Capacity (Net We):

515

8. If Changes Occtr in Capacity Ratings (ltees Number 3 Through 7) Since the Last Report, Give Reasons:

9. fbwer Level to W hich Restricted, if Any (Not We):

10. Reasons For Restrictions, if Any:

This Month

' Yr-to-Date Cumulative I I. Hours in Reporting Period 744.0 3623.0 90551.0

12. Wmber of Nurs Reactor Was Critical O

773.8 63362.5

13. Reactor Reserve Shutdown Wurs 0

0 150.3 14 murs Generator On-Line 0

773.1 61620.8

15. Unit Reserve Shutdown Wurs 0

0 0

16. 0 oss Thermal Energy Generated OM M 0

1005468 77465403

17. &oss Electrical Energy Generated (W H) 0 335850 25923204

18. Net Electrical Energy Generated (MW M 0

313652 24269804

19. Unit Service Factor 0

21.3 68.1

20. Unit Availability Factor 0

21.3 68.1

21. Unit Capacity Factor (Using MDC Net) 0 16.8 52.0

22.. Unit Capacity Factor (Using DER Not) 0 16.1 49.8

33. Unit Forced Outage Rate 0

0 16.8 24 Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

h5062jDOCK05000331 0060 850531 R

PDR

25. If Shut Down At End Of Report Parlus, Estimate 1 Date of Startup:

July 3,1985 I

g (9/77)-

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-0331 UNIT Duane Arnold Energy Center DATE 06-15-85 COMPLETED DY Kenneth S. Putnam TELEPHONE 319-851-7456 MONTH May, 1%5 DAY AVERAGE DAILY POWER LEVEL DAY.

AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 0

17 0

J 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 la 0

28 0

13 0

29 0

14 0

30 0

15 0

31 0

16 0

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

(9/77)

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050-0331 Unit Duane Arnold Energy Center Date 06-15-85 MAJOR / SAFETY RELATED MAINTENANCE Completed by Kenneth S. Putnam Telephone 319-851-7456 DATE SYSTEM COMPONENT DESCRIPTION Olgning Recirculation Piping Weld overlay repair of areas of recirculation piping in which defects had been detected were in progress throughout the month.

(See LER 85-010)

Pricr to Control Rod Drives Control Rod Drive Mechanisms Inspection and refurbishing of several 5/25/85 control rod drive mechanisms occurred prior to fuel loading.

D 9

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Docket No. 050-0331 Unit Duane Arnold Energy Ctr Date 06-15-85 Completed by Kenneth Putnam Telephone 319-851-7456 REF UEL I N G I NFORM AT ION 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.

July 3, 1985.

4 W lli refueling or resuoption of operation thereafter require a technical specification change or other license amendment?

• Yes.

A.

Reload license submittal.

B.

Add it ional M A PL HGR 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 incl ud ing M A PLHGR 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-licensing considerations associated with refueling, e.g.,

new or different fuel design or supplier, ~ unreviewed design or per formance analysis methods, significant changes in fuel design, new operating pr oced 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 po o l.

A.

a) 261 b) 803

e Docket No. 055-0331 Unit Duane Arnold Energy Ctr Date 06-15-85 Completed by Kenneth S. Putnam Telephone 319-851-7456 i

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE 05/01/85 At the beginning of the month the Duane Arnold Energy Center was continuing an extended refuel and maintenanco outage with the reactor fully defueled.

At 1750 hours0.0203 days <br />0.486 hours <br />0.00289 weeks <br />6.65875e-4 months <br /> the Reactor Water Cleanup System isolated on a high l

l differential flow Indication in its leakage detection Instrumentation.

j investigation revealed that the cause of the Indication was that one of the system's pump speed controllers had been inadvertently bumped from 35% of rated speed to 63%.

The resulting system perturbations led to normal system isolation.

(LER 85-013) 05/06/85 At 0910 hours0.0105 days <br />0.253 hours <br />0.0015 weeks <br />3.46255e-4 months <br /> the "A"

side logic caused associated Group lll primary containment isolation valves to close and the Standby Gas Treatment system j

to initiate.

The cause of the isolation signal was a. temporary jumper coming disconnected when the door of the control panel in which it was located was opened.

(LER 85-014) 05/07/85 At 1219 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.638295e-4 months <br /> a light being used to inspect the reactor vessel was accidently allowed to enter a shutdown cooling suction line where system flow pulled it an extended distance into the line.

Affected operations were stopped to permit. recovery of the light.

05/09/85 At 1840 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.0012e-4 months <br />'reflooding of the torus was Initiated with extensive l

. inspection and recoating work completed.

05/14/85 At 0605 hours0.007 days <br />0.168 hours <br />0.001 weeks <br />2.302025e-4 months <br /> maintenance work on an RHR service water cross-tle valve resulted in the leskage of approximately 1,000 gallons of service water j

inside the Reactor Building. Although the system was properly isolated, Inadequate checks were done to ensure that the piping was dralned.

Equipment In the flooded area was dried out and Inspected and work continued without further problems.

l 05/17/85 At 1620 hours0.0188 days <br />0.45 hours <br />0.00268 weeks <br />6.1641e-4 months <br /> the movement of new fuel from the storage vault to the spent I

fuel pool began in preparation.for reloading the core.

New fuel movement to

~

the spent fuel pool continued-Intermittently through 5/21/85 05/25/85 At 1430 hours0.0166 days <br />0.397 hours <br />0.00236 weeks <br />5.44115e-4 months <br /> fuel movement to reload the core. commenced.

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'o Docket No. 055-033f Unit Duane Arnold Energy Ctr Date 06-15-85 e

Completed by Kenneth S. Putnam Telephone-319-851-7456 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE (Continued) 05/29/85 At 1712 hours0.0198 days <br />0.476 hours <br />0.00283 weeks <br />6.51416e-4 months <br /> both the diesel and electric fire pumps +:re removed from service to permit maintenance activities on the circulation water pit (both j

pumps use this pit as a water source).

A well water pump was aligned to the I

fire main to provide backup fire suppression capability.

- 1 (Special Report LER 85-015 pending) 05/30/85 At 3240 hours0.0375 days <br />0.9 hours <br />0.00536 weeks <br />0.00123 months <br /> Operations personnel discovered that contract personnel were mistakenly pumping water from the hotwel.1 side of the 'ondenser to the circulation water pit, rather than water from the cooling water side of the-condenser as Intended. Work was immediately stopped and an Investigation of the cause and consequences of the event was initiated. The Investigation revealed that no unmonitored release had occurred and that no measurable contamination was detectable in the water in the circulation pit.

5/31/85 At 1329 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.056845e-4 months <br />,during construction of a new site building, pile driving resulted in the rupture of the yard main fire header.. The damaged section j

of the fire main was isolated and the remainder of the header was repressurized by 1650 hours0.0191 days <br />0.458 hours <br />0.00273 weeks <br />6.27825e-4 months <br />.

Alternate fire suppression capabilities and i

watches were established to protect affected areas.

By 2117 hours0.0245 days <br />0.588 hours <br />0.0035 weeks <br />8.055185e-4 months <br /> the fire

]

suppression system was restored to pre-rupture. condition with the damaged section of the fire main repaired.

4 (Special Report LER 85-015 pending) s 5/31/85-At the end of the month the. reactor remained in refuel mode with the reload of the core approximately two-thirds complete.

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\\,~1 lowa Electric Light and Ibwer Company June 15, 1985 DAEC 0500 Director, Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.

20555 Attn: Document Control Desk

Subject:

Duane Arnold Ener gy Center Docket No. 50-331 Op. License DPR-49 May,1985 Monthly Operating Report

Dear Sirs:

Please find enclosed 12 copies of the Duane Arnold Energy Center Monthly Operating Report for May,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, wUs~

Daniel L. Mineck Plant Superintendent - Nuclear Duane Arnold Energy Center DLM/KSP/kp*

Enclosures File A-118d, TE-5 cc:

Director, Office of Inspection Mr. Phillip Ross and Enforcement U. S. Nuclear Regulatory Commission U. S. Nuclear Regulatory Comission 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 Boi 2517 Washington, D. C. 20555 (1)

Marion, IA 52302 U. S. Nuclear Regulatory Commission Mr. Russ Gamble ATTN: Mr. M. Thadani Corn Belt Power Cooperative Phillips Building 130013th Street North Washington, D. C. 20555 Humboldt, IA 50548 INP0 Records Center j

1100 Circle 75 Parkway 7

-Suite 1500 Atlanta, GA' 30339

%j Ig

(

Duane Arnold Energy Center e P.O. Ikg 351

• Cedar Ifapids, Iowa 5:406 31918517611