ML20059J097

Monthly Operating Repts for Aug 1990 for Sequoyah Nuclear Plant Units 1 & 2

ML20059J097
Person / Time
Site:	Sequoyah
Issue date:	08/31/1990
From:	Hollomon T, Wallace E TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9009190164
Download: ML20059J097 (9)

Text

{{#Wiki_filter::~ w Y s:_ Vi t-TENNESSEE VALLEY-AUTHORITY ~ SN 157B Lookout Place; Chattanooga,' Tennessee' 37402-2801 September 13.-1990.- N U.S. Nuclear Regulatory Commission ATTN: Document Control Desk. Washington, D.C.- 20555-- m ,.( -Gentlemen: c In the Matter of )? Docket Nos. 50-327: N ~ ~ Tennessee Valley Authority - ) :- 50-378 SEQUOYAH NUCLEAR PLANT.=(SQN) - AUGUST;1990 MONTHLY.0PERATING REPORT

• Enclosed is the Acgust 1990 Monthly Operating (Report as _ required by SQN; j

Technical Specification 6.9.1.10.- If youchave any questions concerning tt.is matter, please. call M. Ah Cooper'at' (615)-843-6422. i Very:truly yours, 9 TENNESSEEiVALLEY AUTHORITY-E. G. Wallace 1 Manager j LNuclear Licensing and. { -Regulatory Affairs Enclosure cc (Enclosure): q-j Mr. J. N. Donohew, Project-Manager NRC Resident, Inspector. g U.S. Nuclear Regulatory Commission Sequoyah Nuclear Plant' j One White Flint, North 2600'Igou Ferry Road 1 11555 Rockville-Pike Soddy-Daisy, Tennessee 37379 Rockville, Maryland 20852 l 2 Regional Administration ' l INPO-Records Center 'U.S.. Nuclear Regulatory Conunission f 4 Institute of Nuclear Power Operaitons Office;of Inspection.and Enfoecement i 1100 Circle 75 Parkway, Suite 1500 Region II W Atlanta, Georgia 30389 101 Marietta Streeti:NW, Suite.2900. Atlanta,-Georgia';30323 Mr. B. D. Liaw, Director TVA Projects Division Mr. B. A. Wilson,' Project; Chief One White Flint,' North U.S.LNuclear Regulatory Comission-11555 Rockville Pike Region,II_,__. Rockville, Maryland 20852-101LMarietta Street, NW, Suite,2900 Atlanta,LGeorgia =30323' 'l Mr. Ted Marston, Director ..l Electric Power Research Institute-r.0. Box 10412 0 Ni'3 Palo Alto, California 94304 9009190164 900831 ~ PDR ADOCK 05000327 An Equal Opportunity Employelr J lllL t

E t -(, j, ,1 5 4 . TENNESSEE VALLEY AUTHOR:'iT - NUCLEAR POWER GROUP ~ SEQUOYAH NUCLIAR. PLANT' i .J' MONTHLY OPERATING REPORT .TO THE ^ NUCLEAR REGULATORY' CON 11SSION-AUGUST 1990-- UNIT 1' DOCKET' NUMBER 50-327.- LICENSE NUMBER DPR-77 UNIT 2-DOCKET NUMBER 50-328 LICENSE NUMBER.DPR-79 i, t - t'., g.<

.V c.. OPERATIONAL 1SUNMARY AUOUST 1990 UNIT 1 Unit i generated'820,140 megawatthours (MWh)~(gross) electrical power during Auguot, with'a capacity factor of 93.18' percent. ,a Unit'l power ^1evel had been reduced to 98 percent ~on July 30.11990, at h '1259 Eastern daylight; time- (EDT), tot reduce No. 3 heater drain tank -ysmp (HDTP) flow to increase delta P. Further power reduction was initiated on August 5,-1990, at 0942 EDT.'for, investigation of No. 3 HDTP Discharge Valves 1-LCV-6-106A and 106B. Atf 2007 EDT on August 5,1954, the power level. reached. i approximately 65 percent ~.. Disassembly and inspection.of the valves' revealed O that Valve 106B had a stem / plug separation. _ Valve _106A had not. experienced a. f ailure,- but both vals ss were; replaced -with spare valves to expedite Unit 1 i power ascension. Reactor power level increase was initiated on August 7, 1990, at 1618 EDT. Unit 1 was-again at1100 percent reactor power level on-August 8, 1990, at.1700 EDT; Unit 1 was.operatingaat approximately 99_ percent _ power level at the end of August. 1 a -UNIT'2-Unit 2 generated 686,650 MWh (gross) electrical-power during-August 1.990, with 1 1s capacity factor of 78.01. percent. Lait:2 entered coastdown to Unit 2 1 Cycle 4 refueling outage at 0736 EDT on July 21, 1990, zod continued'coastdown throughout August. Unit 2 was operating lat: approximately 70' percent reactor'. power level at,the end of August. o POWER-OPERATED RELIEF VALVES (PORVs) AND SAFETY VALVES

SUMMARY

There were no challenges to PORVs or safety valves in the month of' August. OFFSITE DOSE CALCULATION MANUAL (ODCM)' CHANGES There wete no changes to the ODCM during the month of August. 1 i i i

, ' '. - ~ l - 5 -l AVERACE' DAILY UNIT' POWER; LEVEL -DOCKET NO. 50-327 UNIT No. __One-DATE : '09-01 COMPLETED BY: .T. J. Ho11omon TELEPHONE - (615) 843-7528, MONTH - ' AUGUST'1990 AVERAGE DAILY POWER LEVEL' -AVERAGE DAILY IOWER LEVEL-t DAY' (MWe-Net) DAY -(MWe-Net) l' 1064-17 =1102 I 2 1046 18 1100 I i 33 1054' 19 1100 4-107? 20 1099-5 958 21 1098 i 'I 6 701 22 1100 7 752-23 1100 8 1054 24 1101 9 1099 25 1099 10 1098 26 1102 1 11 1103 27 1101 i 12 1100 28-1099 13 1095 29 1097 14 1096 30 1057 1 15 1101 31 1085 16 1100 i 9 a,,

~ AVERAGE DAILY UNIT' POWER LEVEL DOCKET NO. 8 UNIT No.: Two-DATE: 09-01-90' COMPLETED BY: T. J. Hollomon' TELEPHONE '-(615) 843-7528 -1 MONTH: . AUGUST 1990-AVERAGE-DAILY POWER LEVEL' AVERAGE DAILY POWER LEVEL DAY' (MWe-Net) DAY (MWe-Net) 1 ~ 1005

17. '

'858 2 1003' 18. 875 3 994 19 867 4 976' 20 859L 'i 5 969 21 851 q 6 964 22 841 i 7 962 23 832-4 8 960 24 821 9 953 25 814 a 10 930 26 806 ] 11 925 2 7 --- 797; 12 917 28 792-13 909 29 781' 'b 14 900-30 778 15 89L 31 769 ?6 874

\\.r t-OPERATING DATA REPORT-- ~ ' DOCKET NO. 50-327 ,DATE Sent. 1. 1990 i COMPLETED BY T ; .1. Holl omon TELEPHONE : i6151 843-7528 - OPERATING STATUS-l Notes .l 1. Unit Name: Seaunwah Unit One l L-l 2. Reporting Period! .$.uaust 1990 -l l 3. Licensed Thermal Pows' (MWt): 3411.0 -l l 4.; Nameplate Rating (Gross MWe): 1220.6 .l l 5. Design Electrical' Rating (Net MWe): 1148.0 l l 6. Maximus Dependable Capacity (Gr'oss HWe):. 1183.0 l l 7. Maximum Dependable Capacity '(Net MWe):. 1148.0 l 1 8.. If Changes Cccur.in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons: N/A 9. Power Level'To Which etestricted. If Any,(Net HWe): N/A' l

10. Reasons for Restrictions. If Any:

-N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744 5.831 80.376

12. Number of H)urs Reactor Was Critical.

744.0 4.011.7 37.507

13. Reactor Reserve Shutdown Hours 0-

'O~ 0 l

14. Hours Generator Gn-Line 744'.0

-3.911.1 36.600.5-j

15. Unit Reserve Shutdown Hours 0.0 0-0 j

16. Gross Thermal Energy Generated (HWH)

_2.467.797 8 12.672.802.3 119.008.722 'l ' 17. Gross Electrical Energy Generated (HWH) 820.140 4.295.070 40.318.826

18. Net Electrical Energy Generateo (MWH) 791.146' 4.139.908 38.611.937

19. Unit Service factor 100.0 67.1 45.5

20. Unit-Availability Factor 100.0 67.1 45.5

21. Unit Capacity Factor (Using MDC Net) 92.6 61.8 41.8

22. Unit Capacity Factor (Using DER Net)

_ 92.6 - 61.8 41.8

23. Unit Forced Outage Rate 0.0~

1.8 46.6

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

i

25. If Shut Down At End Of Report Perind, Estimated Date of Starth): -N/A I

e jasa

^s- -OPERATING DATA REPORT DOCKET NO. 50-328 OATE. Sen t".' 1. 1990 COMPLETED BY T.

1. Holl onen TELEPHONE f 6151843-7528 QPERATING STATUS

-l Notes l 1. Unit Name: Sm ?uovah Unlt Two l l i.- 2. Reporting Period:. Aunutt 1990 'l l l 3. Licensed Thermal Power (MWt): 3<ii.0 l [ - 4. Nameplate Rating (Gross MWe):- 1220.6 l 'l 5. Design Electrical Rating (Het HWe): 1J 48.0 l -l. 6. Maximum Dependable Capacity (Gross _HWe): 1183.0 l

l l

7.. Maximum Depe idable Capacity (!4et MWe): 1148.0 I

l

8. -Ifl Changes occur in Capacity Ratings (Items' Number 3 Through 7) $1nce Last Report. Give._ Reasons:

N/A i 9. Power Level To Which Restricted.- If Any (Net HWe): N/A 1

10. Reasons For Restrictions, If Any:

N/A This Month Yr-to-Date Cumul ati v s ' -)

11. Hours in Reporting Period 744 5.831 72.336

12. Number of Hours Reactor Was Critical

'744.0 5.803.9' '30.334

13. Reactor Reserve Shutdown Hours 0

0-0

14. Hours Generator On-Line

'744.0 5.792.4 38.488.2

15. Unit Reserve Shutdown Hours 0.0 0

0-i

16. Gross Thermal Energy Generated _(HWH) 2.046.158_.4 18.871.33 Q 119.281.595

17. Gross riectrical Energy Generated (HWH) 686.650 6.460.500 40.481.296

18. Net Electrical Energy Generated (MWH) 657.955 6.221.430 38.660.764 l

19. Unit Service Factor 100.0 99.3 53.2 y

20. Unit Availability factor 100.0 99.3-53.2

.f

21. Unit Capacity Factor (Using MDC Net) 77.0 92.9 46.6

~ 22. Unit Capacity Factor (Using DER Net) 77.0 92.9' 46.6

23. Unit Forcad Outa9e Rate 0.0 0.7 41.0

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

A Unit 2 Cvele 4 refuelina outaae is scheduled for Sootember 1990 with a duration of 70 days. i

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

N/A J J ,h h t,

m '~ -DOCKET NO: 50-327 UNIT SHUTDOWNS AND POWER REDUCTIONS- 'JNIT MAME: One ~ COMPLETED BY:T- .l. Hollamon' ' *: y p DATE: fs9/01/90 -r REPORT MONTH: Auaust 1990 -{~ - TELEPHONE:i6151 843-7528 : * -Method of. Licensee Cause A Corrective I - nt . Action te-Duration Shrtting Down. Event Systy. C yde. _ Prevent Recur rence - l 2 Reactor 3 Report No. Code ~ Cc No. Date Type - (Hours) Reason 7 900730 A 5-Unit 1.isas or.frating at 98 'perce=* ~.eactor power on 7/31/90 at 2400 (EDT)."' Reactor ~ power level had been reduced - because of Froblems with No.~ 3 - teTP flow.' Further reactor power level decrease was initiated en 8/5/99. At 2?9/ (EDT) that. day, reactor power level was at 65 percent.-. Unit I level-control valves 6-106A and 6-1968 were disassembled and inspected. Repairs were made, and Unit I was again at 100 perv_ent reactor power level on 8/8/90 at.. {.. 1700 (EDT).- F 3 . S hibit G-Instructions 2 I: Forced 9eason: Metho : ~ 2 for Preparation of Data - 5: Scheduled A-Equipment Failure (Explain) 1-Manual = B-Maintenance or Test ~2-Manual Scram ~ Entry sheets for Licensee C.-Ref ueli ng 3-Automatic Scram. Event Report (LER) File ~ D-Regulatory Restruction.

4-Continuation'of Existing Outage

.(NUREG-061)- E-Operator Training and License Examination 5-Reduction ~ f-Administrative-9-Other-SExhibit I-Same Source G. Operational Error (Explain) j H-Other (Explain)- 4 ,P

W Af' 7 : ~h .s, ~L DOCKET NO-50-328 -.: !* s UNIT SHUTDOWNS AND POWER Rt00CTIONS UNIT NAME- 'Two ~ ' DATE:- 09/01/90 ' REPORT MONTH: Auaust 1990 COMPLETED BY:T. J. Ho11ames-TELEPHONE:f6151~843-7528 Method of Licensee Cause and Corrective ~ Duration Shutting Down Event Systy C g nent Action to 2. g 2 Code - . Prevent Recurrence No. Date Type (Hours) Reason Reacto Report No. Code ~ Unit 2 continued coastdown to Cycle 4 refueling outage. Unit 2 was operating at approximately 70 percert reacP" power level on 8/31/90 at,2400.(EDT). - e 2 3 4 I: Forced Reason: Method:.. Exhibit'G-Instructions F S: Scheduled A-Equipment Failure (Explain) 'l-Manual' for Preparation of Data - B-Maintenance or Test' 2-Manual Scram -- Entry sheets for' Licensee 3-Automatic Scram-Event Report (LER) File-C-Refueling - 4-Continuation of Existing Outage. .(NUREG-061) D-Regulatory Restruction E-Operator Training and License Examination -:5-Reduction -F Administrative 9-Other SExhibit I-Same Source- _ G-Operational Error (Explain) H-Other (Explain) .a e t' 7' d=*'^" " " "- ' 'W -et--. .7- -m"t-:. +---5. i..P... .t 4.4 t M -+sT dak#' i...,.im."..' .t.IJ '., ' ' " ' " ' ' ' ' ' ' " ' ' " * ' }}