ML20141N941

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Monthly Operating Rept for Feb 1986
ML20141N941
Person / Time
Site: Duane Arnold NextEra Energy icon.png
Issue date: 02/28/1986
From: Mineck D, Bernard Thomas
IES UTILITIES INC., (FORMERLY IOWA ELECTRIC LIGHT
To:
NRC OFFICE OF ADMINISTRATION (ADM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
DAEC-86-0199, DAEC-86-199, NUDOCS 8603180304
Download: ML20141N941 (8)
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OPERATING D4TA REPORT DOCKET NO. 050-033i DATE 03-15-86 COMPLETED BY Bradford N. Thomas TELEPHONE 319-851-7309 OPERATING STATUS Notes

1. Uni t Name Duane Arnold Energy Center
2. Reporting Period February, 1986
3. Licensed Thermal Power (MWt): 1658
4. Nemoplate Rating (Gross MWe): 565 (Turbine)
5. Design Electrical Rating (Not MWe): 5 38
6. Maximum Dependable Capact ty (Gross MWe): 545 7.' Maximum Dependable CapacI ty (Not MWe): 515 l 8. If Changes Occur in Capaci ty Ratings (ltems Number 3 Through 7) Since the Last Report, Give Reasons:
9. Power Level to Which Restricted, if Any (Not MWe):
10. Reasons For Restrictions, if Any This Month Yr-to-Dete Cumula tive i
11. Hours in Reporting Period 672.0 14 16.0 97104.0
12. Number cf Hours Reactor Was Critical 672.0 1416.0 68737.9 i
13. Reactor Reserve Shutdown Hours 0 0 __

150.3

14. Hours Generator On-Line 672.0 1416.0 66975.5
15. Unlt Reserve Shutdown Hours 0 0 0 j 16.' Gross Thermal Energy Generated (MWH) 831031 1683221 84289455
17. Gross Electrical Energy Generated (MWH) 284 74 6 575958 28232019  !

7

18. Not Electrical Energy Generated (MWH) 267442 540272 26430909
19. Unit Service Factor 100.0 100.0 69.0
20. Unit Availabill ty Factor 100.0 100.0 69.0
21. L' nit Capacity Factor (Using MOC Net) 77.3 74 . 1 52.9 '
22. Unit Capaci ty Factor (Uning DER Not) 74 .0 _

70.9 50.6

, 23. Unit Forced Outage Rate 0 0 15.7

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

An approwlmetely two (2) week outage to perform annual surveillance tests and inspections which began Merch 14 th, 1986.

1 1

25. If Shut Down At End Of Report Period, Estimeted Deis of Stertup N/A B603180304'B60 g31 PDR ADOCK O PDR (9/77) I I R I

c ;.

.ti AVERAGE DAILY UNIT POWER LEVEL, s

DOCKET NO. 050-0331 UNIT Duane Arnold EneroY Center DATE 03-15-86 COMPLETED BY Bradford N. Thomes _

TELEPHONE 319-851-7309

' IOITH ' February, 1986

[0AY . AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL

(MWo-Net) (MWe-Net) 1 341 17 403 2 345 18 404 3 343 19 423 4 342 20 443

'5 370 21 438 6 403 22 409

7. 400 23~ 405 8 391 24 413 9 399 25 410 1J 401 26 410 11 405 27 412 12 406 28 416 13 405 29 -

14 407 30 -

15 399 31 -

'16 399 lNSTRUCTIONS On this format, 1:st t % everage delly unit power level in MWe-Net for each day in the reporting month. Compute the nearest whole megewett.

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Dsckot No. 050-0331 Unit Name Duane Ar'nold Energy Center Date 03-15-86

( Completed by Bradford N. Thomas l Telephone 319-851-7309 l-REFUELING INFORMATION

1. Name of facility.

A. Duane Arnold Energy Center I

l .

i 2 Scheduled date for next refueling shutdown.

).

.A. February, 1987 h

! 3. Scheduled date for restart following refueling.

l A. April,- 1987 l 4 Will refueling or resumption of operation thereafter require a i technical specification change or other IIconse amendment?

l A.. None currently identifled

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

I l A. None currently identifled

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. a)' 368 b) 696 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.

t A. 2050 9 The projected date of the last refueling that can be discharged to the spent. fuel pool assuming the present licensed capacity.

A. 1998 L __

',l.

D2cket No. 050-0331 Unit Name Duane Arnold Energy Center Da te 0 3-15-86 Completed by Bradford N. Thomas Telephone 319-851-7309 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE 02/01/86 At the beginning of the mon th the Duane Arnold Energy Center was in normal power opera tion w i th 341 MWe ( no t) going out to the grid.

02/03/86 At 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br /> the Emergency No ti f ica tion Sys tem Circul t f ailure light was discovered on. The NRC was informed of th e problem and Informed us repairs would be comp l e te in two (2) hours.

02/04/86 At 1033 hours0.012 days <br />0.287 hours <br />0.00171 weeks <br />3.930565e-4 months <br /> the plan t en tered a 7 day LCO when the Diesel Fire Pump was removed from service for tube oli sy s tem repairs. Minor leaks were repaired and the fire pump was returned to service a t 2015 hours0.0233 days <br />0.56 hours <br />0.00333 weeks <br />7.667075e-4 months <br />, thus ending the LCO.

02/07/86 At 1716 hours0.0199 days <br />0.477 hours <br />0.00284 weeks <br />6.52938e-4 months <br /> a 30 day LCO was en tered when a Sa f e ty/Re l i e f Valve was declared inoperable when it unexpectedly opened f or approxima tely 14 seconds, i nves ti ga tion revealed that dual grounds during replacement of an annuncia tor card was the probable cause. i nves tiga tion also revealed a partial ground in the circui t Inside primary containment which may have contributed to th e even t. After circuit tes ti ng, design review and confirmation of proper logic sequencing to confirm the valve would perform i ts designed function the valve was declared operable at 154 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> on 02/14/86, thus ending the LCO. Fu r ther testing of the circuit inside primary con tainmen t wil l be performed during the plan t's March outage.

02/10/86 At 1833 hours0.0212 days <br />0.509 hours <br />0.00303 weeks <br />6.974565e-4 months <br /> a 30 day LCO was en tered when a channel of the torus wa ter/a l r tempera ture recorder was removed from service. The recorder channel was overhaules and the LCO was terminated when the channel was re turned to service on 02/12/86 at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />.

02/11/86 At 084 7 and 0857 hours0.00992 days <br />0.238 hours <br />0.00142 weeks <br />3.260885e-4 months <br /> the Reac tor Wa ter Clean-Up (RWCU) s y s te.n unexpectedly i sola ted, inves tiga tion of the even t revealed tha t a high dif f erential temperature condition had been sensed by the s team leak de tec ti on logic.

The cause was de termined to be a t-Inor degrada tion of manual volves on the vent and drain lines of th e 'A' r egenera ti ve heat exchanger which were permi tting sligh t s team leakage into the area. The valves were ti g h te ne d down and the RWCU sys tem was r e tu rn ed to i ts normal sys tem line-up wi thou t s igni f ican t di f f icul ty.

(LER 86-04) 02/15/86 At 0734 hou*s a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> LCO and an Unusual Event were entered when the 'B' Emergency Service Wa ter (ESW) pump was removed from service for planned sys tem maintenance. The pump discharge alr/ vacuum. vent valve was refurbished and the pump was re tu rned to service at 1314 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />4.99977e-4 months <br />, thus ending th e LCO and Unusual Event.

02/17/86 At 0739 hours0.00855 days <br />0.205 hours <br />0.00122 weeks <br />2.811895e-4 months <br /> the diesel fire pump was removed from service for planned ma in tenance and a 7 day LCO commenced. The pump exhoust line rollet valve was replaced due to leakage and the system was re turned to service a t 1222 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.64971e-4 months <br />, thus ending the LCO.

~-

.s.

Dockot No. 050-0331 Un i t N:30 Dueno Arnold Energy Centnr Da te 0 3-15-86 ~

Comp l e ted by Bradford N. Thomas Telepnone 319-851-7309 NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE (Continued) 02/28/86 At '0750 hours0.00868 days <br />0.208 hours <br />0.00124 weeks <br />2.85375e-4 months <br /> the plant en tered a 7 day LCO when the hea ting and air condi tioning uni t in the Sou theas t Corner Room was removed from service. A blade was replaced in the blower unit and the sys tem was returned to service a t 2210 hours0.0256 days <br />0.614 hours <br />0.00365 weeks <br />8.40905e-4 months <br />, thus cancelling the LCO.

At 0759 hours0.00878 days <br />0.211 hours <br />0.00125 weeks <br />2.887995e-4 months <br /> a Class C f ire was reported in the Turbine Building. The Second Assistant was making his rounds and noticed smoke coming from the sample sink chiller pump mo tor. The motor was doenergized which put ou t the fire. The Fire Brigade responded promp tl y and was posted for any reflashes.

A t the end of the mon th the plant had con tinuously opera ted for 220 days, and was opera ting in normal power opera tion with 416 MWe ( no t) going out to the grid.

Iowa Electric Light and Ibwer Company March 15, 1986 DAEC-864199

. 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 February, 1986 Monthly Operating Report

Dear Sirs:

Please find enclosed 12 copies of the Duane Arnold Energy Center Monthly Operating Report for February, 1986. 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, Daniel L. Mineck P1 ant 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 Commission 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 ATTN: Mr. M. Thadani Corn Belt Power Cooperative Phillips Building 1300 13th Street North Washington, D. C. 20555 Humboldt, IA 50548 INP0 Records Center 1100 Circle 75 PGrkway Suite 1500 At1anta, GA 30339 7[9 I Gersetut t!tlier In Isos :Ut

  • revlsr Itapids Isma 3:4m 319/393 4812 \
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