ML19326C530
| ML19326C530 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/15/1978 |
| From: | David Williams ARKANSAS POWER & LIGHT CO. |
| To: | Goller K Office of Nuclear Reactor Regulation |
| References | |
| 068-2, 68-2, NUDOCS 8004230649 | |
| Download: ML19326C530 (9) | |
Text
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'!ERINTR RLGULATORY INFORMATION DICTRIBUTION SYSTEM (RIDS)
DISTRIDUTION FOR INCOMING MATERIAL
- -313~368 REC: GOLLER K R ORG: WILLIAMS D H DOCDATE: 06/15/78 NRC AR PWR & LIGHT DATE RCVD: 06/21/78 DOCTYPE: LETTER NOTARIZED: NO COPIES RECEIVED
SUBJECT:
LTR 1 ENCL 40 RESPONSE '10 NRC LTR OF 12/09/77.
FORWARDING APPLICANT"S COMPLETED STEAM UNIT gFNEg'{ OPERATING HISTORY QUESTIONNAIRE OF SUBJECT FACILITY.
PLANT NAME:ARKANGAS - UNIT 1 REVIEWER INITIAL:
XJM ARKANSAS 1 - UNIT 2 DISTRIDUTER INITIAL:
- DIJTRIBUTION OF THIS MATERIAL IS AS FOLLOWS ******************
RESPONSES TO STEAM GENERATOR QUESTIONNARE (DISTRIDUTION CODE A023)
$r0 Q id/E8MCL.
1 R. M A R.T w u.) GKL FOR ACTION:
po ruTFF orbit 4 BC**W/7 ENCL ggg g gg INTERNAL:
G FIL 64/ ENCL NRC PDR**W/ ENCL a/2 ENCL OELD**W/ ENCL
~ "
- HANAUER**W/ ENCL AD FOR SYS'& PROJ**W/ ENCL ENGINEERING DR**W/ ENCL REACTOR SAFETY BR**W/ ENCL PLANT SYSTEMS BR**W/ ENCL EEB**W/ ENCL EFFLUENT TREAT SYS**W/ ENCL EXTERNAL:
LPDR'S RUSSELLVILLE, AR**W/ ENCL THIS DOCUMENT CONTAINS TIC **W/ ENCL NSIC**W/ ENCL P00R QUAUTY PAGES &
RON GAMBLE **W/6 ENCL KEN HERRING **W/6 ENCL ACRS CAT Bu*W/16 ENCL
%cM.
DISTRIBUTION:
LTR 50 ENCL 50 CONTROL NBR e 751730C W SIZE 1P-t15P Nco***o***x*************************
THE END
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x Eg(E BBCE FE '0?Y ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 UTTLE ROCK ARKANSAS 72203 (501) 3716 June 15, 1978 l,
068-2
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Division of Operating Reactors h
ATTN:
Mr. Karl R. Goller, Assistant Director 9
Operating Reactors Branch #2 i,j U. S. Nuclear Regulatory Commission
~3 Washington, D. C.
20555
Subject:
Arkansas Nuclear One-Unit 1 6 2 Docket No. 50-313, 50-368 License No. DPP-51 Steam Gener: tor Operating
~
History Questionnaire (File:
1510, 2-1510)
Gentlemen:
In response to your letter and questionnaire of December 9, 1977 and February 10, 1978, please be advised of the following infor-mation:
UNIT 1
- Questionnaire is attached UNIT 2
- Because Unit 2 is not operational, no response to the questionnaire is at-tached at this time.
Ver-truly yours,
/
y y
N-L L+u Daniel H. Williams Manager, Licensing DHn':REI : nh Attachments NR;
%Maaof Q-AD b
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liasic Plant I n fo r a # ! i ori Plant:
Art.ari:.as I.'oe l e:t r One-Ilni t 1 St a rt -up l> ate:
December 19, 1971 lit i 1 i t y:
Ark ansar. l'ower r, l.i ght Plant !.ocat i on :
Russellville, ArLansas The rma l Powe r f. eve l :
2,5t>8 E NSSS Sooplier:
P.abeoek T. Wilcox Number of 1. oops:
Tuo St eata Generator Supplier:
Rabcock r, Wi!cox Steam Generator !bdel No:
OTSG St eam Generat or Type:
Once 'ihrough
!! umber of tube: per Generator:
15,507 Tube Si:e:
0.625" 01) x 0.034" wal1 Tube flat erial:
Inconel-600 I1.
St cam Generator Operat ing Condi t ions Norma 1 Operat ion Tempe ra t u re 570"F Prinary Side I' low Rate:
65.66 x 10
lb/hr f
Seconilary Side Flow Rate:
5.6 x 10' lb/hr Alinwable 1.catage Rate:
I gpm l' rima ry P res :o re 2200 psig Secomla ry P esso re.
925 psig Accidents Design P,ase 1,0CA Max Delta P:
925 psig Main St im 1.ine Break Max Delta P:
2200 psig III. STliAM GENEllATOR SUPPORT Pl. ATE INFOR!!ATION Material; SA 515 Grade 70 Design Type.
Broached Plates Design Code:
ASSIE CODE SEC. III I)i men s i ons :
117-15/32.t 1/32*dia, 1 1/2 plate Tube llole Ilimensions:
Broached lloles Flow ilole Dimensions:
Does not Apply TV.
STEAM GENERA'IOR Bl.0WDOWN INFORMATION
't he lir,W once t hrough st eam generator wit h st raight tubes does not require blowdown during normal opetation.
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.WATElt Cll!111SThY INI Oldt\\ TION l'
Seconda.rv Wa t e.r,.
.1.
Type of Treatment:
AVT i
. Ilf fec t i ve Fu l l powe r days o f ope rat ion :
787.7 days Impuri t y. l imit s:
p!!:
8.8-il2 Dissolved 0 7pph 3
Tota 1 Solids:
50 pph Cation Conductivity:
0.5 umbo l
S i u., :
20 pph Fli: '
10 pph Cu:
2 pph Feedwater Impori ty limi t s:
Sar..e as secon lary water, limergency feedwat er is not used duri'ng start-up or normal plant operation.
Condenser Cooling Water t
Typical Chemist ry :
- Sio, 2-3 ppm So ~
10-100 ppu g
Ce 25-175 ppm Caco 3 50-150 ppm (Tot al lia rdnessi l
Ocminerali:cr: - Type: }lixed bed l
Cooling Tower. None VI.
Till ItINil S'10P VAINil TliSTING Babcock T, Wilcox has indicated that frequent turbine stop valve testing at full power may lead to damage of the steam generator and recommends that the turbine stop valve 'c tested infrequently and at reduced power.
Since this recommen-dation we have made one test at 50% full power with no stroke requirements.
Future' testing frequency is unresolved at this time.
l lVII. STIIAh! TllitE DEGilADATION llIST0IlY l
In Service. Inspection Date:
2/77 Number of EFP days / since start-up:
499.6 St cam Generat or "A" l
Percentage of Tubes Inspected. At' this ISI:
3.160%
I Percentage of tubes plugged prior to this IS1:
- 0. 0'.
-Percentage Tubes plugged at chis ISI: - 0. 0',
There has been no sludge build-up in the ANO-1 0.T.S.G.
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No treplacement', ret'ubing or other remedial act ion was considered.
Support plate hour glassing and islanding'does' not apply to bro iched hole support pintes
' No tubes were examined metallurgically Fretting does not apply-Cavit ation li.rosion Cracking as'of 2/77 Area = of Tuhn 1 undle (1) a b
c
.I c
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of Tubes inspected t
n 0.612225 0
0 affect ed by t racking (4) 4 of Tubes plugged t'
O O
O r
1.ocat ion Above Tube SilEliT (3) 12,2 and 1 Itate of Icakage from cracks:
none llenting does not apply St eam Generat or "11" Persentage of tubes inspect >
nt t' is ISI:
3.160 *.,
Percenttsge of tubes plugged this ISI:
- 0. 0 *,
There has been no sludge buiiu-up in the Ah7-1 OTSG.
No replacement, retubing or other remedial.-tion was considered.
Support plate hourglassing and islanding does not npply to broached hole support plates.
No tubes were examined metallurgically Fretting decs not apply.
. Ca vitation crosion was not raported as of 2/77.
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Crack _i,ny, as : of 2/77
. Area of. Tube Itundle (1) a b
c
-d e
S for Tubes inspected.
- Affected by cracking (4) 0-0 0
0 4 0S *. -
~
t of Tubes Plugged due to Cracking (4) 0
.0 0
0 0
1 i
i I
~"
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I.oca t ion alnive t ube shce t !3):
7-8, 1.b l4
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Itate of -Icakage from crack ?. : none
- l)enting docs-not app)y in service inspection date:
2/78 Number of I'.FP days since last inspection:
272.1 days
- Steam ' Genera to r "A" l'ercentage. of tubes inspected at this ISI:
21.35*.
Percentage of tubes inspected at this ISI that had been inspected at the previous scheduled ISI: 100".
Percentage of tubes ' plugged prior t-his ISI:
- 0. 0".
Percentage of tubes plugged at this sal:
0.0322*. (5/1550)
Percentage of tubes plugged that did not exceed degradation limits (2):
Percentage of tubes plugged as a result of excecdance of degradation
- 0. 0*4 limits (2):
100*.
There has been no sludge build-up in the ANO-1 OTSG.
No replacement, retubing or other remedial action was considered Support plate hourglassing and islanding does not I. ole support plates.
apply to broached Tube 77-17 was removed for metallurgical examinat ion Tube ~ metallurgical exam results:
1.
A small crack at the lower surface of the uppei tube sheet 2.
A large crack 5/S" above the lower surface of the uppen tubesheet.
3 Iloth cracks are in t erg ranula r 4
Numerous shallow pits at the lower end of the tubesheet c re v i ce.
5.
Numerous chemical elements on the surface in an.t nrr,und the cracks and pits.
6 Environment assisted by stress is involved in the crack formation p roces s.
7.
!?atigue does not play a role in the formation of these cracks.
8.
Super icial damage (metal loss') at the fifteenth support plate, r
the mechanism is undetermined at this time.
L 9.
No evidence of I.D. constriction near the rolled in area.
- Fretting does not apply Cavitation erosion was nor reported as~of 2/78 Cracking as of 2/78 Area of ihmdle (1)
_c e
i I
- . of' inspected tubes affected by eracking (2) 4.098*.
0.1181*e
- ' of tt.hes pl ged due~to eracking (4) 0.01935*.
0.006449%
t of' tubes plugged that.did not-exceed a gtadation Iimit (3)-
0.0 0.0 x
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_s-faications above tube sheet (4): IITS ( t b ree ), 12-13, 15-t r!'S ( t wol, 1 -2 ( t wo) 9, 12-14, 13-14.
itate of leakage from cracks:
None Denting does not apply.
Steam Generator "11" Percentage of tubes inspected at this ISI:
9.235*e Percentage of tubes inspected at this ISI that had been inspected at t he previous scheduled ISI:
1 00 *.,
Percentage of tubes plugged prior to this ISI:
0. 0 ',
Percentage of tubes plugged at this Isl:
- 0. 0'i, There has been no sludge build-up in the ANO-1 UrSG.
Support plate hourglassing and inslanding does not apply to broached hole tube support plates.
No tubes were examined netallornically Fret t ing does not apply.
Gaeiration erosion was not reported as of 2/78 Cracking as of 2/78 Area of Tube I;undle a
b c
d e
- of inspected tubes 0
0 0
af fect ed by cracking (4) 4.098" 0.07634'.
- of Tubes plugged due to cracking 0
0 0
0 0
1.ocations above tube sheet (3):
LTS-1, 1-2, 3-4 (two), 7-8 (two), 14-15 Rate of leakage from cracks:
None Denring does not apply.
VIII.
There han been no significant steam generator abnormal operational event s.
IX.
CC NDENSER INFOlU4AT10N Condenser tube material:
Admiralty metal Tulie 1.eakage:
Date No. of Tubes plugged llefore S/ll 6
1975 12 1/12/76 4
12/9/76 1
1/5/77 2
1/11/77 1
Detection Method :
Sodium Monitors at condenser outlet Detectable 1.imit:
1-2 ppb increase in Sodium ( < 1 gpm) 4
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P Alil ATION 131"il.URE Willi Isl Sl'l.Cl To S!! Art Gl!NiillATORS D/dli ikiSAGli ( TIAN-101)
CtVDft!NT 2/77 7 43 First TSI 2/73 11.
Second ISI TAlli.l! KEY (1)
Area of liutolle "o. of Tidies wi t hin the a rea a.
Pe rijshery 7,960 c.
fli ssing Tube lane 61 c.
Int erior of hunt!!c 7,483 (2)
Allowable limit for cracking is 40', through wall (3)
Tube support s are numbered f rom the lower tube support (I.TS) up.
l.ocations above tube sheet are located by the number of the tube support where the flaw occurs or the numbers of the two support plates between which the flaw lies.
(4) Tubes which show < 20*, through wall cracks are not considered to be affected by cracking since indications in this range are not accurate XI.
DiiGl:ADATION lilSTORY FOR Tult!!S AFFliCrliD ltY CRACKING Tube 2 79-13 St cam Generator "A:
ISI Date:
2/77 Amount of degradation:
30%
ISI I) ate:
2/78 Amount of degradation:
Nonc detected Tube 77-6 S'eam Generator "A" ISI Date:
2/77 Amount of degradation:
2 5 '.
I S ! I)a t e :
2/78 Amount of degradat ion:
None detected Tube 79-It-St eam Generat or "A" ISI !) ate:
2/77 Amount of degradation:
Nonc detected ISI Datc:
2/78 Amount of degradat ion:
30-35*,
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7
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Tube 75-27 Stea a Generator "A" 1ST DAT!:.
2/77 Amor.n t of degrad.it ion:
Distorted Signal ISI Date:
2/78 Amount of degradat ion:
7 0 *,
Tube ~ 7-41 St eam Genera t or "11" ISI Date:
2/77 Anount of degradat ion:
2 0 ".
ISI Date:
2/73 Amouni of degradat ion:
20';
Tube 74-15 St can Gern ra t ur "li" ISI Date:
./77 Amount of denradat ion:
0 ",
ISI Date:
2/78 Amount of degradat ion:
2 0 ',
Tube 74-12 St eam Generator "B" ISI Date 2/77 Amount of degradation:
3 0 ",
151 Date: 2/78 Amount of degradation:
3 0 *.
Tube 75-15 Steam Generator "A" ISI Date:
2/77 Amount of degradation:
None detected ISI Date:
2/77 Amount of degradation:
70' Tube 79-15 4
St cam generator "A" ISI Date:
2/77 Amount of degradation:
30";
ISI Date:
2/78 Amount of degradation: 45's Tube 77-10 St can gencrat or "l!"
1 Amount of degradation:
None det ected TSI Dat<:
2/78 Amount-of degradat ion:
2 5 *,
!!FI' day:.. i nce last 151 (2/ 7S) :
Its i
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