ML20062H676
| ML20062H676 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 01/25/1980 |
| From: | Gustafson R Office of Nuclear Reactor Regulation |
| To: | Pawlicki S Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20062H675 | List: |
| References | |
| NUDOCS 8008210215 | |
| Download: ML20062H676 (6) | |
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- ts NUCLIAR REGULATORY COMMIS33CN i!'4'Ms.-
- s. 5 ;;./1 I . .usmucte=. :. c. ::ssa
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......d' JAN 2 5 950 .
- ke: fic. 50-3E7
- ?CRANCUM FOR: 5. 5. awlicxt Chief Ma:aMais Engineering 3ranen
.CM : R. M. 3ustafs:n, C:nsuiun:
MataMais Enginer-in; franen ICEJEC~: TRI? RE?CRT OF '/ISIT TO TEMNEISEE '/ ALLEY AUTHCRITY SE UCYAH NUCLI.1R PLANT, UN!T-1 Flan ::ame: Secucyan Nuclear Fiant Unit-i Iu:: liers: "iestingneuse; T/A tes=nsible Branca an: :-:jec.."anager: L'.iR 4; C. R. 3:anie
.icansing Stage: CL
- evtewer: R. M. 3us.afsen OEI RI?T:CN OF TAIX: Review *.iele Re: air Pm cecure usec f:r Realigning 5" Petssuri:er Relief 71:e, anc Su::crting Cata to Oe:armine ac ::::acility f the Repair Review 5:stus: C::nclett On ce 15:n f January,1980, ! visited ce Secucyan site, anc me: wi e engine-ering :erscenei f em 7/A and I :e ::nnel f :m NRC, Regien ::. The :ur::se Of ty visit was u review Oe .veicing re: air :rececura, and tas: results = :eter-
- ine ce ac:a:n:ility f te re: air.
Enc!:surt (I) discusses in :etail ne f:ams everec :uring me testing.
- umenutien was furnisned :n eaca :1 pe items ciscussec.
3asec :n me data :::sined at ne meeting anc inf:r- a:icn furnisned su:secuently
- y T/A, my ::inien is 04: ce neid rt: air is satis'ac::ry, and ca: =e eicec area s=uld 9c he susca::ible u in.argranular stress-c r :si:n 3::a:x.
The :ases f:r Ois ::inien a t as f:licws:
4:!: Ty:e 316 s.ainiass steel ma:erial was usee #:r te :ressure tidef
- 1:ing. ~his a:ardal tas :e: ar resis.ance = ina granular 3:rtss-
= r esten a:n ex =an 4:5: Ty:e 204 suinless stas! nica is =e za:arial es: ::.rnenly usec.
II) Se :ungs an iner; ;as (T:3) neicing :r:cass ':as asec ':r t: air :f re welc. a u sn:wec =a: a tia:tvely 1:w ,et- in:u: (i .e. 29.7 <' il:f:uies :
vas usec in <sei:ing =e :i:e line. S e vel:1ng ::ali'ica-1:n :recacurt
=e !:yec aas in 3:=-:anca .vi= - e :IME ::ce, Iec-i:n :X.
2; : d:r :: rt:at wei:'ng, a ::x-.2:" :f te t:si as race. I:ecimens u4an '- : =e ==::a ac = x-u: ere exam ec ':r sus:::::til' y =
6008210215
- 3. $. ?awli Xi s rsss-c:r-est:n attack by =e 5:rauss Test, in a:=r an:a win te scut e-en n f 35 'd 1.-ES2, Pate: ices A and I. he resuits :f =is tes- tveniec ra: ce het: Af'ectec ::ne (HAZ) cf =e 4eic area 4as li;n-!y sensi- :ec.
Hewever, Ce s:ecimens te: c e ecut tren = cf =e :ss , and 4ere =nsi:arte ac::::2:ie. A =nsiceraciy 1:wer nee: incut was usec :n r e ac nal t: air can aas usec :n te tecx-u:, =us assuring even :e=ar resistanen =
stress-c:r :si:n a-.ack in =e rt: air nelc, ran ua: evicencac :y me
'recX-u ."
la) 5:ecifica:icns f:r react:r c:cian: water sn ned =a :xygen =ncan:rati:n mus te =n: 011ed : less can 0.1 ;:m a: tac::eratures acove 13C y s avenging wi e nycrszine. Ouring cwer :: era 1en .41:n :ne s:ecified nycrogen ::ncantration maintainec in de ::oian: (i.e. 30-40 c:/Kg H.30) ne residual Oxygen mus not exceed 0.005 ::m. -
(5) Sc n te mecx-u: welds and rt: air welds were ins:ec;ed by licufc :enetrant, raciegra:nic, and ultrasonic mecces in ac=rcance wi n re recuirt ents f AIME C:ce, Sections I : anc XI. Results sn: wee re 4eies we-t ac: ::::le.
. wie no etjectacle :afec.s in evicenca.
(5) An engineering evaluatien Of te stresses in et Ft:airsc :ar: uni = as su=ntec by. VA : !;RC su secuent :: c e reting snewee an a = a::2:le c ncition. Since de nelcs art in :=:rtssi n, stricual s:rtsses aert ::
desced :: ;1ay a significant reie in re everall s rtss =nci:icn.
- is ete: m encec Oa: !iRC a'c:eo: Os re:ai-te ;rtssuri:ar relief line.
{ . *hi. Of%
R. M. 3ustafs:n, 0:nsui:an:
'iateriais Engineering 3ranen Inciesure:
As statec
=: R. J. Ma s:n R. M. Iustafs:n F. Scn-:ecer
.. a. ,sennu
- . 3. Vassallo J. . <nign:
H. F. C:nrac R. J. !csnax 7.
. .Ple: nan .
- s. A. .am:se s
. 3. Ru:instein
- 2. R. 5:Inie
. <. 7an := ran, Eeq ::
- 1. 7. ~;;;'e, :E tes. :nse. Secucyan
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A ;i:e su:=r failed = ;e*#:rm as :esignac :uring ic: #une i: a us:ing causing me 5.inen :ressure relief =f:ing :: uneenc": as:f: :e":-a:i:n.
eflecti:n das incica:ac .: :e a: r:xt:aniy =e ince.
7/A indi:1 ac ta: Janger RCS 93 i:cted 2: an: acui: ne A I ' :'.v # se :ve-ten: Of me :f:e. 11=er =an cu ning anc -e:iaci g - e :1:e an':n acui:
necassi u ta ;er':e ing a Secti:n X: hycr: :f = e Rene::r :: clan: Sys:am
- rior :: initial fuel leacing T/A elected 'n use a : raw :ead neicing ucanteue :: reali;n .e :i:e. Tnis :acani:ue inveivec !aiective ::aca-ment O' .veid .a:ariai :n ce :1:e Outar sur's a = :end :P Psaif;n t e i:e
- ue = nel: snrinicage effec.s on :ne me:11. TIA's recues 2 RC f r
!=reval, cid 9c: :rovice tacxgr:und :etails n : e re: air ;r:cacurt c:i:yed, centis =ncarling ~. vel: Or:cacure :ualifd: : den, n n-ust u :tve t.tami ati:n, 4
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=r :si:n Ortexing, :r any nnsicerati:n f -esi:ual ne':ing stresses.
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=:2inec anc evalua:ac.
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A. :::encees 0g re 15:n Of January, 1980, visitad ne Secu:ytn sita, anc me air engineering ;ers:nnei fr:m tiRC, Region :*.
, '.isted telow are tae names cf attencees a mis ree:ing:
, ac a. . .a2:ert, e.. -va,.uat:r . .la. .. m .. .. i avic ..a..ii, a 4.s,.uclear
. ae,,.icans, .:
ann yechanical .
ng .
. g . ..C- /,. wa 1c.
- l. - .. :.ng. . la. .:.C. . .s R=er- M. Jessee, .'deui!urgical Eng. - 7/A - CICE3 I M n A. ' der de.x:nn
. ng -ng .cene,. . .fr.
ae::. '4eu. liurgic21 b.g. - 7/A - CIDE 3
. . ..e- :es:.
James daueur, '.ieleing Eg. - 7/A - !!iP-::nst.
James A. T cm:s:n, sst. .'dE7 Su . - ?!A - I;P-C:nst.
wart A. M:5ur'e , 'luclear bg. ~!A ::'ner ;egicn 5:sf' N it: R. Hi =:::X, 'dec .ani:21 bg. . TIA - !!!P :daint.
James W., lNP-Inc: 'daint.
.,2 ,.:n ..4 00.::y r an,
- deca..'daint.
.a ng. Su=
la - - .. 7/A-:..,P
..lP .
- eter <. lan ::cr:, "eui*urgical Eq. 'iRC-:!, Reg. I:
Rey M. bsn'sen, 'da arf als bg. ::nsuinn: - :RC 'CII *
- 3. : s'-s O'scussac he :gr=sa :" my vist 44s n eview arc :is=ss ce #:ii: wing areas:
.s.
(* ne nei rt: air =rt:acure usec, (2 :ne 4eicing r:cecure :ualifica-ion.
(2) 77A's Oe ermina:1cn Of sensi:1:2:icn in the nei: area.
(A) ncncestructive examination resuits Of :ne weiced :i:e, (5) ??A's :r::csec ment : ring anc ::n r:1 Of :xygen in :ne ;r mary d
- cian na ar, anc (5' ??A's engineering tvaica:icn :f -esi:uai s:rtsses in :ne 4ei::ent.
7* :reviced ::cu=en:2:icn ::vering :ne areas :is: ssec. ::its f
- nese :ccu=ents niii te furnisnec :: - e :r:fect manager.
Ois: ssien reveniec :ne feli: wing:
(il The ra:ariai usec f r :ne s' :rtssuri:er relie' i'ne was 157M a-275 7/ :e 215 sea:iess s:siniess stasi :1:e.
() The wei:ing :ualifica:icn rececurs nas :er':r ed in 1:::rcance att AIME :ce Sec-icn :X, and was :eemec 1:::::::ia.
(2) -i:r := actuai neicing, a "Seck.u:' :f :ne : art was race using
- ne Pt: air :recacurt s:eci'iec f:r One actual : art. Tre ecx.u:
ani:n snewed a :af*ection of 1:cu: I". similar -na: in .9e
- rtssuri:er reif e' Iine nas returnec :: 1: recuire: Ina:e by
, : raw sead weid'n; tecnni:ue in ani:n neic snrinzage s:rtsses .ere usec :: realign :ne Oi:ing. A ske::n sa wing :ne nei: :rt: art:icn was su: ittec. Ais VA ' :ecifica-icn 4.M.2.i(c), *!:ect"f =2-f on
'Or Sancing r Align =en: Of Pf:e anc Tacing' 4as su:mit:ac. !:
nas incicated ina: inis s:eciff =1:icn me ASME ce fee:i:n *:!
ecuirements .
! Weiding .as :er" rmee using ne Tungsten :ner: 3as : recess. Mea:
)
in:ut :: Octa :ne *:ccx.u:* and ne actual rt:ai was :1:seiy f eguiatad. 77A :ersonnai s:2 ec ::a: 1st: 'neu: :: :ne * :cx-u:"
was :n :ne nign sice :f ne weicing cuaiificz-icn :r:cacurt ::
- r:vice a *ces: case ::nci-1:n. icwever, nea in ut :: ne actual Pt: air was ieic :: ;;.7 <ii:f:uies. This was a:::::iisnec by increasing :ne s:eed Of welcing fr:m 2/a inen :er -i u a :: 2
'nenes :er 31nute, anc using :ne L::erage an: voltage a: :ne :wer
-Inge :er=i::ec ancer :ne 4eiding :ricacurt ::ai'fd: :i:n :recacurt.
( *) Ouring :rtvi:us taie:nene :iscussi:ns :etween TVA inc 'GO :ersennel, Ine su ject Of sensi:1:stien :f ne nel area 4as -lisec. Ne scues;ec .na: 7/A :er':-n 1 I:rtuss est :n 1:eci: ens tmevec a
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Of ASTM a-Z52, 3-se ica A anc E.
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actual re: air neics .ere licuid :ene: rant ins:ec sc ::= :urd g anc a' tar aeicing in sc::r:ancs c= ce e=i t> enu :' *!!dE ::e Sec: ton :::. Racie:ra:nic ins:ee: ten as ma:e :n :: * :cx-u:"
anc ce actual re-ai : art in ac=r:an:a 41= !:4E ne Ie::icn :::
=n. ne.=. '.cun. .-. -=. . .=c.=....=.*e.
Oltras:ni: examina:1:n f =e eics in ne " :ck-u:'.,anc ac ual
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Se::1:n .(: anc ers f:unc ac: ::a:1e.
(5) T!A's =n: 01 :" :xygen in :te na:ar usec in te :ri ary tacur sys am das discussee. :eci'ica:icns :n a:er :nemis: y ve-e
.r.se
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less man 0.1 =m a- am ers,ures a::ve 130* ty 3:s.er.ging 410 ycra:ine. The limi: c' 3.1 is intance :rimart"y as a ;ui:e
c .:f..uation Of nea .u: ' rem 13C*: = ner ai :: era:ing tam:er=:ure.
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.t.in.ainec in =e =cian: (i.e. 30-~. :: :er f.; :' L l, ce Ptsituai Oxygen mus: not exceed 0.0 5 ::m. '
(7} An engineering evaluatien O' me s: tsses in me Pt:airac : art, wni c was su:mi nac :y TIA su secuen: : ce ee:ing, snewec an ac:a::a:le ::nci-'en. 3:*tss anaiysis revetiec - a ce s'
- rtssuri
- er relie# ;i:ing wculd te sa:Jectac = stresses of 17,533
- si. Sinca ce neics are in c
- m:ressi:n, resi:ual nei:ing stresses aere nct deemed = ;Iay a significant c:le in =e :verali strsss Onci-icn.
.... ;r. .::e..lC
- i. wing ,.s a 4.
.-c..: .,s: :a. ce :cuments ;rev4.:ec :y ,.:
a A. :de'crancum . 3. 3:ack. rt.dect Sgr. Se:tcyan ?ian: :ns: ::td :n :
R. 'i. :ierte, Secucyan anc '.ians 3ar Oasign :-Of e::s '8gr. :n 7/II/75,
'!ecucyan Nuclear :lant :ressuri:er Reif e' ' ine - de: rune-icna! .
- 2. 71* O.~a uf' *.' ele :-ecacure ;uali'ica: ten See:r: ":. ITIS-.J-i a :ac
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- 2. Nati:na! Vaive.anc 'anufac uring :m:any T r :f Cec.19, !!7? =
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- !ecucyan '!uclear : Tan: -
Evaluatien ci " raw 3ea: 9:ck 4: 315 5:ainiets e...I
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. . 4....,....*s. g...,3.c p . gd..n. . . . ...r..ge. ., . g r. .. .. g ,.r. p . ..g,.4 ses a.n . eveaiec that me s:e:':: ens examinec :assec ne : . rtuss its:
?cui rements. ~ e Oxygen =ntan in :ne tac.:e =01an: water sacu h Sc:
- e ! #act:r sinct curing nor- al ::eraticn t- is =n. :1:ec u a . taxi: u:a. :f
- 005 ::m. Curing startu: f *. is ::ntr:11ed = a axt:-':m Of 0.1 ::m.
.;cp. gg...,.4. ve =.x.~4. 9 a .'. an 'y '6i.
.. .. . . . u '. a .en e *.-3 n . , *. ' ..a d. .g. a . r.'. . 5 n d. ". l.*.-'.s . . d. .-
-'e cecs tvealec ca: Oe =ei .s neae s:unc, acc ac a:n: e in ac=reance d'O AIME *:ce recuiremen u . An engineering s rtss analysis reveaiec :na:
ts' dual 3:Nsses art not a fac :r.
n Mew Of Oe a:cve =nclusi:ns, I rec:-reac ca: *iRC ac:aa: ce Pt: air O ne s' =ressur':er relief line.
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- . UNITED sTA7es
! '*3 . ,{ j NUCLSAR REGULATORY COMMISSICN
, , w:",;p WASHINGTCN. C. C. 2CSSS
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\a.r -.4 ],j g ,e
..... .n f it'c:0 Occke: ?:o. 50-227 ME'iCRA:lCUM FOR: L. S. Rubenstein, Acting Chief Lign: 'da ar Reacters Branen No. 4 .
Civision of Pr: Ject!!anagement FRCM: S. S. Pawlicki Chief Materiais Engineering 3ranen SUBJEC~: TENftE!!EE 'IALLEY AUTHCRITY, SEQUCYAH *.JCLE.3.R Puli , UNIT ?:0.1 -
REAL!3.*4ENT CF PRESSUR! ER REL!EF P:PE
REFERENCES:
- 1. Mee ran um, R. :4. Gustafsen - e : 3*wlicki, " Tris Re;ct: Of 'tisit = Tennessee 'lalley Autacrity Secucyan Nuclear Plant, Uni: 1," January 25, 1980
- 2. "e randum, J. Malacat: :: S. S. Pawlicki, "Secu:yan Uni:
One 'deld Crawcead Realignment of 5" Pressuri:er Relief Pipe," February 27, 1980 Plant Name: Secucyan Nuclear Plant, Uni No. 1 Su= liers : tiestingneuse; l'/A -
Licensing Stage: CL Res:ensible Stanch and P jec ? tanager: L2 a; C. R. Stahle leviewer: R. M. Gustafs:n
- escri;:icn Of Task: Review 'deld Recair Precacurt Usad far Realigning 5" Pressuri:er Relief Pipe Review S stus: C melete Ouring het functional testing at Secu:yan tiuclear Plant, Uni: Nc. 1, 3 Oi:e aanger failed : slice anc caused the six-inch pres uri:er relief i:ing :
ancerge ;1astic defer :ation. This Oc:urrence was re: rtec :: :ne Cffica af
- .s;ection anc Enf:r:sment in Nenc:nfermanca Raccr: S;iP-79-5-3.
The :sf:r :ed :1:e was su:secuently returned : its scuirec snace by a draw:end nel:tng tecnnicue (welc snrinkage s:rtsses .ert usec :: re-ali;n :ne :i:ing)
<nica nas :ualified :y :ne a::licant. After velcing, :te neic area nas examinec
- y raciegra:nic and licuic :enetrant inscecti:ns in acercanca wita ne recuire-cents Of =e AS:<E C0ce, Section I:! anc sy an altrasenic ins:ec:fon in ac=r:ance 41:n tne recuirec:ents f =e AS:<E ::ce, Section C.
'"/A's recuest :: '(RC for a::r: val, dic no: :revide :ackgr unc ce:siis :n :ne t: air :recacurt em:I:yed, :etails c:ncarming neid :rececurt Ouaif fica:icn, l ren-cest: Jctive exa=inati:n, f r.f:r a:1:n :n ce susca :1bility Of rt:airec area
- intergranular stress =* :si:n : racy.ing, Or any ::nsicerati:n :f reticual welcing s rtsses. Ac=rtingly, 3::reval aas helc :: until acci:icnal inf:r a:fon nui: :e ::.sinec anc avaluatac.
bfC T h b y ! -? I: lU l
L. 5. Ru:enstein -.: . . ::. .
On the 16:n of January,1930, Our ::nsultan: Rey 3ustafsen visitec :ne Iecu yan site, and met w1:n engineering :ers:nnel from TYA anc I :ers:nnel fr:m :;RC, Region !!. The ur;cse f nis visit was :: review :ne wel:f ng re: air :r:ce are, anc test resui:s :: ce: ermine One ac:e : ability of One re: air. Reference 1 discusses in detail the items covered during tne tetting. :::: entatien was furnisnec :n eacs Of ne items discussec.
3ased On :ne cata Ob sinec a: -he meeting and inferration furnisnec sa:secuen:Iy Oy 7'/A, ne nave ::nclucec :na: :ne weid re: air is satisfae::ry, anc :na: :ne neicec area sneule no: :e susce::ible :: intergranular stress-c:rr:sien attack.
On Fe:-vary 27. I received a memcrandum frem J. Hala:a= (En:1:sure 2) rec:m-
- ending tha: :ne Materials Engineering 3 ranch defer ac: ::ance of :ne pi;e realignment procacure, cencing the ceveic; men and review :Y a::iti:nal inf:rta-ion identified in Reference 2.
7:gether wita cur c:nsultant R. M. Gustafson and mem ers Of ny staff: M. ::nrac an: 1. 3e:rgiev, I have evaluatec the ree:mmendation ::ntainec in Reference 2.
We find hat ne new issues no: : nsicered in Our cricinal evalua:i:n nert icentifiec in Referenca 2, and tha cur ac: ::ance of -he re:ecure is su:-
- rtec by the existing data.
Hewever, we have rec:mmencec :: Joe Halama:: :: mee: ai:n engineering :ersennei f := T/A and II at :ae Secu:yan site anc :: examine ne me: ail:gra:nic sam:les in :uestien. _ _ ,
f
,V W
- 5. 5. Saw11:ki, C.hief Materiais Engineering 3 ranch Division cf Systa=s Safety Office Of ?'uclear Rea ::r Reguia-icn Enc!csurts:
- 1. R. M. 3cstafsen's Meme I. J. Hala:a ='s Memo
- R. J. Matt: n M. L. Icyie
- 7. Scar ecer 8 <. Van :: rn, Reg ::
- 3. 3. Itsennut W. T. ::::!e, :I Res. :ns:. Secu yan
- 3. 3. Yassallo H. F. 0:nrad J. P. Knign: 3. 3. 3e:rgiev
- 5. A. Varga
- 0. R. Stante
- 3. I. Eawlicki
- 8. . M. Iamele R. M. Icstafsen, :nsui:an:
J. Hala:a:-
- 9
.f *%,
/[ ,A UNITED STATES
- 3e, ; NUCLEAR REGULATORY COMMISSION I *
- 1.'".,..
,I -
WASHINGTON. O. C. 205SS
%, ',- ,,' . f *i:2
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MEMCPitCUP .:0R: L. S. Rucenstein, Acting Chiaf Lign: Wate- Reactors Branen ?!c. 4 Division of Project t'anagemen:
F:.CM: S. S. Pawlicki, Chief Materials Engineering Branen SU3 JECT: ME ALLU'GICAL EXAMINA7:Ct! CF T/A SECUCYAH tiUCLEAR 2LAN , UNIT NO.1 - WELD ORAW 3EAD REALIGilEO P:ESSURI'ER RELIE: P:PE t'00XUP he Stateriais Engineering Branch is in need of aceiticnal information reia ed
- :ne wel Oraw beac realignment of the Secucyan Nuclear Plant, Unit fic.1
- ressuri:ce relief 1:e. We wisn arrangements :: ce mace for a *wo cay visit, v
aren 5 anc 5, by Joe Halaca : to :ne T/A Singleton fiaterials Engineering -
'detailegra ry Lacers Ories. The Our:cse of the visi is :: :erf: m. a metal-lurgical examinatien Of :ne mocku: used in cualifica-icn of tne weld craw :eac realignmen: of :ne su: ject ;ressuri:er relief ci:e.
We recuest ina: the :ualifica:1cn necku: be made available to J. Mala:at: for his selection Of s ecimens f:r metallegraehic examina icn and intergranular
- rr:sion testing curing nis visit.
S. S. P wlicki, Chief Materials Engineering Branch Division of Systems Safety Office of Nuclear Reac Or Regulation c:: J. P. Knignt R. M. Gam::le 4 5. Pawlicki
- n. F. Conrac C. Stanie J. Malaca::
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