ML20249A898

From kanterella
Jump to navigation Jump to search
Monthly Operating Repts for May 1998 for Sequoyah Nuclear Plant,Units 1 & 2
ML20249A898
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 05/31/1998
From: Bajestani M, Hollomon T
TENNESSEE VALLEY AUTHORITY
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9806190076
Download: ML20249A898 (10)
v • d • e


Text

- _ _ _ - _ .

., .

  • s ..

u

,. =,

i Tennessee Valley Authority, Post office Box 2000, Soddy Daisy, Tennessee 37379-2000.

I

- Masoud Bajestani Site Voe Presidert Sequoyah Nucioar Plant June 15,.1998 U.S. Nuclear. Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Gentlemen:

>In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT '(SQN) - MAY 1998 MONTHLY OPERATING REPORT The enclosure provides the May 1998 Monthly Operating Report

.as required by SON Technical Specifications Section 6.9.1.10.

If you have any questions concerning this matter, please call me at (423) 843-7001 or Pedro Salas at (423) 843-7170. /

Sincerely, I

7 '

NMasoud. $ c>\ w B j astan j

t ,A

. Enclosure C cc: .See page 2 q y f 5 sI e sP906190076 990531i'-

aa ^= ** Su' L _. lL . .

7-

- U.S. Nuclear Regulatory Commission Page 2 ,

Juire 15/ 1998 i.

ccL(Enclosure):

Mr. R.:W. Hernan, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North ll555.Rockville Pike Rockville, Maryland 20852-2739 INPO Records Center Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, Georgia 30339-5947 Ms. Barbara Lewis, Assistant Editor, Database McGraw-Hill, Inc.

1200.G Street, NW, Suite 1100 Washington,,D.C. 20005 Mr. James Lang, Manager

' Advanced Reactor Department Electric Power Research Institute 3340 Hillview Avenue Palo Alto, California 94304 NRC Resident Inspector Sequoyah~ Nuclear Plant 2600 Igou Ferry Road Soddy-Daisy, Tennessee 37379-3624 JRegional Administrator

-U.S. Nuclear Regulatory Commission  !

Region II.

Atlanta Federal Center 61.Forsyth St.,.SW, Suite 23T85 Atlanta, Georgia .30303-3415 i

i c

}

j i

ENCLOSURE TENNESSEE VALLEY AUTHORITY SEQUGYAH NUCLEAR PLANT (SQN)

MONTHLY OPERATING REPORT MAY 1998 UNIT 1 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77 UNIT 2 DOCKET NUMBER 50-328 LICENSE NUMBER DPR-79

OPERATIONAL

SUMMARY

.MAY 1998 I. SEQUOYAH OPERATIONAL

SUMMARY

UNIT 1 Unit 1 generated 810,814 megawatthours (MWh) (gross) electrical power during May with a capacity factor of 93.87 percent.

On May 19, 1998 at 1043 EDT, with Unit 1 operating at 100 percent reactor power, during the performance of a relay functional test for 480V shutdown board 1Al-A, Unit 1 tripped on a low-low steam generator (SG) water level.

The root cause was failure of C Phase of the alternate feeder breaker to properly close resulting in arcing, which caused Vital Inverter 1-I to malfunction and clear the inverter bridge fuses. This resulted in loss of power to Vital Board 1-I, which caused a loss of feedwater to all four SGs. The 480V shutdown board was inspected and no damage was identified. The normal feeder breaker was placed in service and Unit i reactor was returned to operation.

Unit 1 was operating at 100 percent power at the end of May.

UNIT 2 Unit 2 generated 874,685 MWh (gross) electrical power during May with a capacity factor of 101.7 percent. There were no outages or power reductions of greater than 20 percent in the average daily power level during May.

Unit 2 was operating at 100 percent power at the end of May.

II. -CHALLENGES TO THE PRESSURIZER POWER OPERATED RELIEF VALVES (PORVs) OR PRESSURIZER SAFETY VALVES

~

During the Unit 1 trip on May 19, 1998, a loss of instrument power resulted in a letdown isolation. As a result, pressurizer level and pressure increased until the PORVs opened. Operator action restored pressurizer level and pressure and the plant reached a stable condition. The

~

Unit 1 safety valves were not challenged. There were no  !

Unit 2 PORV.or safety valve challenges in May.

l l

i E-1 l O- ._

t AVERAGE DAILY UNIT POWER LEVEL DOCKET-NO. 50-327 UNIT NO. One DATE: June 8, 1998 COMPLETED BY: Tanya J. Hollomon TELEPHONE (423)843-7528 MONTH MAY 1998 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY (MWe-Net)

1. 1145 17. 1145
2. 1149 18. 1147
3. 1149 19. 493
4. 1152 20. 0
5. 1150 21. 236
6. 1149 22. 1044
7. 1149 _

-23. 1139

8. 1149 24. 1138
9. 1150 25. 1140
10. 1152 26, 1137
11. 1150 27, 1142 12 1150 28. 1138
13. 1149 29. 1141
14. 1148 30. 1139
15. 1147 31, 1141
16. 1147 E-2

4 AVERAGE DAILY UNIT POWER LEVEL

. I DOCKET NO. 50-328 UNIT NO. Two DATE: June 8, 1998 COMPLETED BY: Tanya J. Hollomon TELEPHONE (423)843-7528 HONTH MAY 1998 i

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

1. 1144 17. 1142
2. 1144 18. 1145
3. 1143 19. 1145
4. 1144 20. 1144
5. 1147 21. 1143
6. -1146 22. 1140
7. 1145 23. 1139
8. 1145 24. 1138
9. 1137 25. 1138
10. 1140 26. 1138
11. 1146 27. 1138 12 1143 28. 1138 l
13. 1145 29. 1137
14. 1145 _
30. 1134 15, 1146 31. 1139 16, 1143 1

l E-3 f

l L- _.

OPERATING DATA REPORT Docket No. 50-327 Date: June 8, 1998 Completed By: Tanya J. Hollomon Telephone: (423)843-7528

1. Unit Name: SQN Unit 1
2. Reporting Period: May 1998
3. Licensed Thermal Power (MWt): 3411.0
4. Nameplate Rating (Gross Mwe): 1220.6
5. Design Electrical Rating (Net Mwe): 1148.0
6. Maximum l)cpendable Capacity (Gross MWe): 1161
7. Maximum Dependable Capacity (Net MWe): 1122
8. If changes occur in Capacity Rating (!!cm Numbers 3 & 7) Since Last Report, Give Reasons:
9. Power Level To Which Restricted, If any (net MWe):
10. Reasons for Restrictions, if any:

This Month Yr-to-Date Cumulative

11. Ilours in Reporting Period 744 3,623 148,296
12. Number ofIlours Reactor was Critical 712.3 3,591.3 88,447
13. Reactor Reserve Shutdown llours 0 0 0
14. llours Generator On.Line 697.8 3,576.8 86,636.4
15. Unit Reserve Shutdown llours 0 0 0
16. Gross Thermal Energy Generated (MWh) 2,346,492.1 12,157,559.7 283,401,555
17. Gross Electric Energy Generated (MWh) 810,814 4,233,166 96,634,293
18. Net Electrical Energy Generated (MWh) 783,430 4,100,670 92,800,567 19 Unit Service Factor 93.8 98.7 58.4
20. Unit Availability Factor 93.8 98.7 58.4
21. Unit Capacity Factor (Uring MDC Net) 91.9 100.9 55.8
22. Unit Capacity Factor (Using DER Net) 91.7 98.6 54.5
23. Unit Forced Outage Rate 6.2 1.3 29.2
24. Shutdowns Scheduled Over Next 6 Months (Type, Dat,, and Duration of Each): Unit I Cycle 9 refuelirig outace is scitgdoled for Scotember 9.1998. with a dugition of 40 days.
25. If Shutdown at End of Report Period, Estimate Date of Startup. N/A E-4

\ .

  • 1 OPERATING DATA REPORT Docket No. 50-328 Date: June 8, 1998 Completed By: Tanya J. Hollomon Telephone: (423)843-7528
1. - Unit Name: SQN Unit 2
2. Reporting Period: May 1998
3. Licensed Thermal Power (MWt): 3411.0
4. Nameplate Rating (Gross Mwe): 1220.6

' S. Design Electrical Rating (Net Mwe): 1148

6. Maximum Dependable Capacity (Gross MWe): 1156 l 7. Maximum Dependable Capacity (Net MWe): 1117
8. If changes Occur in Capacity Rating (Item Numbers 3 & 7) Since Last Report, Give Reasons:
9. Power Level To Which Restricted, If any (net MWe)-
10. Reasons for Restnctions,If arty:

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744 3,623 140,256
12. Number of Hours Reactor Was Critical 744.0 3,623.0 91,278
13. Reamr Reserve Shutdown Hours 0 0 0
14. Hours Generator On-Line 744.0 3,623.0 89,297.5
15. Unit Reserve <hutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWh) 2,534,445.6 12,347,816.7 286,325,153 _
17. Gross Electric Energy Generated (MWh) 874,685 4,280,729 97,506,093
18. Net Electrical Energy Generated (MWh) 848,813 4,155,233 93,560,595 )
19. Unit Service Factor 109.0 100.0 63.7
20. ' Unit Availability Factor 100.0 100.0 63.7  ;
21. Unit Capacity Factor (Using MDC Net) 102.1 102.7 59.7 l
22. Unit Capacity Factor (Using DER Net) 99.4 99.9 58.1 l
23. Unit Forced Outage Rate 0 0 28.4
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): N/A
25. If Shutdown at End of Report Period, Estimate Date of Startup. N/A  !

l l

1 E-5

1 l l D d a Af r m e oo gwawr y a E ehl e- r a o g pPAaik nt d r er a md r wr e ea o t t l o5

,H 7 c -

A 3 p a a gk t

cM n

b wd e o i

I 8 .3 J 4 e 4iCl e g 0 rt et a a e o G 7 1 2 - e a) 8 vi e 1 f d br itn1 yor r r pu o s sb mr e r I n E

R f a oru nwdabri 3 Nn y3 ce t e t l a el e e o Ut e R s )

0Qu a n24 re w al a e r oh ut s r r e te oc e i

t nt N eE 5SJT( r s 8 tc u nbTer v v sshcl fd o od 9i a

r (

r shL (

ou r 9 amfa w r.e seI n n oi h a udfed 1

l i

i l t neUe p f o yt Y Cc okal oci ahe nawoh l

sn n o r r n n po l

a aao s t e 9 o t h ed l

e B dn 'R ut u e t t t ,t r ioE e c te 0 Ve d met 1 I r

D:E at r yV w i ct aR2 n-yaf h b r cd t 2 u O:E ENe 2 a r os r r dl eod1 l a8 t i o v e t 0 o T se Mtot Ved e ebl ruadd ew4 t

e c nr en r u rDe a n1 S NM E Ouw c l

u0 ps pe s u t

s f v - e TA Ha r na s e o ud s o eh sh n Or e er 4f8 pce ar a n reBf eTiTir ne t

I n oEG

- onee m

a

. E N: PL P CP - e S dK E T TM Lt E GisR t nU I n CI u it a e it ihb apr icN b

S fo ONAO E n e .

L - i N DUDC Tm h e x t

e x e r rli Oo n p E P foF E l

r e snd'e - R Cr Uu c

CC oo K B

Ds o .

E e s :

m*

Rc n e e Rr e E ef t

sd yo A g SC E n WeR i i

t s

O! x P ro t n

1 0 mE a f D r r e 0 mc r o NE v c 8 aS no E o. 9 r c ci n AH eN 9 1 Si a t a u t

o ST et l l i

/ t s r d a a NN no 7

2 _ h n o u untmine ot g u e c

WO e p c

3 t a a u notad et OM i e -

0 f eM MAC uO R LR 5 T* 1 234 59 DT '

TR f UO ol c H P d g 'r S E n o TR ht oin t c

I t t e u o e w a N

U MhsD R3 es 2 )

n n n e

o s

i a i c

lp a

e - E x nd o n L

R A ( t s ic a t

e r T e ir g u

n l r t s

e inn is o) ia o F e Ri a t r c r a u t e na gryT n n r o 2 o r ot D( uH 6 4

mel nnta oi i

ptn el a a t t

l n iuif gei o

s qa e e pmd pt u ur n eEMRROaA a

'ep ' - - - - - x yW 2 R ABCDEEFG T F 9

1 e 5 d t

a 0 le 8 e u D' 9 cd r e oh

?. F cS om F :

N 1 ' S

l o37 c t p2 v

_ e

,H - A - mw r nl 8 .3 ea r G J 4 ev

h e et g r w 8 2 a8 i e E 2 - e R s )

at ep o 3Nn y)n2t3 ec n c 0Qu a e t

u a Uter nee 5 SJT( r 4 ro rr or e ly

(

o gi a r shL (

u

_ Y Cce - nfdo f o yt r r n np o e e s t d

nR B r s gh e D:E at n e nat o r n ioE e c aR2 2 r

c O:E wie t u

E N sue ev v o o t

e t c ua n1 0 t S

NM T euam r trDe TA E L Oa HCP e

r - h d e e Trehh I s f n

oEG v - e m

a S d E

K N:E P E -

P t t

- n eE Giso eR S-Nn u CIT TM Lt < it t

a e nU I

it Oo I f ONAO E n e b pL i

ai r cN b

i Tt DUDC Tn h x e r rli e h x

Co n o2 p E PfoF E U e s 'e nd

  • 8 Dc r oo E u CC Ro s Re 'n E cn m e 'e Wree ts d yo g Of S C. n P e i R t s

D /

i x

No!rr t n mE a f Ar e v1 mc r o SE E o. aS n r o N: eN c ci Si t a t

o n

WT H et do a l a u a min e c r i

un uln ot t

s r ON no e

gu e c p a a u on tad eh h t DO ie t

eMMAC uRO t

T O --

UM LR M - - -

8 1 234 59 I

T I

SR Fo:

TOP I d g n'

NE oin ht UR t t e u w o MhsD e

s

)

n in n )

o e s a c in l a a p x

iL lp e E nd o n x R ( t s ic a t

E

(

e r

e i g r ni o) luT i o r

t r

si e n n

e r i o) r a

is t r F e c

Riar ivE t l au t n

e an grT y

n r na a r

u o nnt or oi ot is oE DH (

meliat

pt el a a n a r t

i(

t n

oui i fn gei u umeh r ni r e s

a qa e e pmd pt

'ep eEMRROaAO O

- - - - - x - -

y 'R ABCDEEFG1 T -

t e d e

a e u l

D' cd r e oh F cS o .

F: :

N9  ; ' S

Retrieved from "https://kanterella.com/w/index.php?title=ML20249A898&oldid=3146188"