R6vblon 2
May I=
U.S. NUCLEAR REGULATORY COMMISSION
REGULATORY GUIDE
OFFICE OF NUCLEAR REGULATORY RESEARCH
REQULATORY GUIDE 1.99
nmsk ME 50541
RADIATION EMBRITTLEMENT OF REAm'OR VESSEL M A E R I A U
~roquiranclrtsin1 0 C F R P l r t 5 0 h ~ M M d E C O M B
ClNo. 3150.0011.
~ e n c IksipCrittrioa31,
d
"Fc9ctm~RtvcDtwaofRencrar
Coolant Rrssurr: Baradary." QC Apperdir A, " C k d Qaign
Criteria for Nwlw h w a Plants," to 10 CFR Part 50, "'m
Licensing ofhoductim md U f i l h h F d t i c s , " raguirtS,in
that Xbc rmdor -laat pressure bOundary bt d c s i g d with
mfikicnt mato emm &at, wbm SITS& undu -,
1. ~ a r a g r r r p b ~ . ~ a l - ~ m p i r = k d f & a f m
rIuimmm, Itsting. and p t d a t e d d m coaditim. (1) the
~
t
o
b
e
~
~
t
h
e
~
u
f
'
~
bouadsy W v t s in Imbritde mmer and (2) the pmbabfity
W~.ThiPgui&~Sdessu&~intheIormofd&~
of rapidly m a ! i n g framfr aaOre
' "
1, Gareral Design
- t a i n ~tbat are accqmb~cta the NRc.
C ~ 3 1 ~ 9 0 ~ 0 q ~ l ~ t h a f t b E d w i g n r t £ I ~ ~ M e pa
in. ddcmhbg the effats of irradiation on t n a k d pmpcnits.
2 . P l t a 9 r s p h V . B o f ~ C t ~ t b e ~ i ~ r ~
hppenaix G,"FniclKrc T o o m Raquirtmwo," aad hppcndix
.I
tbe~limitEor~a$s..irmcrionftcmperaam.dnring
H."Rcacrar VessdMataial !hwdhmx
~pmdooaldownfmagivta~paiodin~af~
Hhich hplemtnt, in part, Crittriw 3 1 , neesitate tbc calculaGm
o f ~ ~ ~ i n ~ m g h a a s a f r e a ~ f 0 ~ ~ ~ 1 m a t~ c Pr oidan lI us t~o f t h e a d ~ r r f f f a r e c t c m p e t ; r t u r t a t ~ a d
b y ~ r a d i a r i m ~ t S l e r c r v i c c l i f G . ~ g u i d e of
~ the d c e period.
g a d m r c s aac@Ie m the NRC stafffw calculating h
of m
n -tion
mbri~~cmcnt
of thc tow alloy
a m n t l y used fur Light-watcr-cm1Ed mactor vekscIs.
is
~~.
'
1
The.calculativtproctrfarrsgivcnin~Position1.lof
dGsguidcaremtltbcsxmastbmgivcnintheR. ' dlbtrmal
shock rule (4 50.61, "Fracture Tougkws b p k m m t s Fw b
oxtion Against F k w m k d ThEtmal Shock Evcnu." of 10 CFR
Pan50)for~thgRTp~s,rhercfc~ttDlpcraturrthatis
tobcomtparodrothcsmc&q~mgiwninthenht.%
i n f o d o n cm which this Revision 2 is bitzed may dso rffect thc
basis for tht STS d e . Thc gaff is presEntly mmi&ring whet&
mpropwcachBngF m 4 SO.61.
%Advisory CommitteeonRwaorSsTeguardsbasbecnrpndtd conctming this gui& and I
w c m m d in lhregukmry
position,
'
'*&*
Aoygrddear~~a~s~raqtlimtletlgin10CFRPartX),whichp-cm
vidts t
k rcgulMory baris for tihis guide. Tbt i n f d n cofiaUSNRC REQUIATORY GUIDES
/
R o P u t t o n G u W m bu8d to aecrlb and rnrM.wallabla to th*
PubllC mathIcEePtable to tm NRC Hall of imnler(rmtlnp
SDecllk prm of t t Cornmtalon's
~
mgulatlen& to dollnoat* tub
n1ques usod ~y thm +taw In mvrlua:lng rpscEnr roblemr or p u t u bted ucldenta or to provide- gutdancs t a ap&nU.
Regulator
Guldas arm nof subrtltwtsr for rsgulatlons. and cornpllrrncm wit[
thorn k not nqulmd. Methoar and rolurtonr arflrrrsnt Worn thore sat
out In t h e pukd~swlvlll be acfeptrats It the provlde r brsls for thr
flndlngs r.quirlta t o t~ brumncs or cmnfiouancc of a pennit or
ICczme
By the Cornmuion.
Thls guWa war L r w d attareomldmrstfon of comrmnts ncatwd hum
t M p u b l l ~Comments and ~ u g p a r t l r n s'1mImprmnmnts In these
:"
L%b,
"1:?.2' %'%d,
or
tkn
*x&tienca
S*:! ~2%~~m,Pd"l,d!c.$!?a Z2,dE
1. M w r r Flncton
6. &MU&
2 Rsssswh and Test ffarctan
7 YranrWrtatlon
3: ~ u o t sa nd ~ i t e r l a i Fs ~ C I E I ~ J ~ S Ocwwtlonad ~ s r l t h
4. EnwIrenrmnul and Sltlnq
9. Antitrust and Fliurrlal RCv)ow
5. Matorh1sand Plant Prot.ctlon 10. Canera1
II:
cop~arof W ~WM=
A
m y be
m u r a from tm ~wom-t
Prlntlnp Qttkt at t h a cumnt
prlcs Informatlar on armnt
G W urlwr may PC mtelned by contactln the 5uDarlntaMtmt o l
&
DPtummnts, "3. Government Prlntlm ci%~co, Post O f W Box
3 f 0 8 2 , Washlngtan, DC 20013-7012, telephone (202)27bZV6D or
(2023215-2171.
issued guldor ma a h be wrchmad f r m i tk. Mtlonrl Tlchnlul
Infmmmtlon
on
dandlnp ordor bask, Datiilk on thb
r e r w l a may m abtslnaa by vrlrtng NflS, 8215 Rort Row1 Road,
%nL
5ntInaf~!a.V A 22161.
*
T h s t w o ~ b r a d i a c i m d ~ t m m t u s e d i n ~ g o i d s 0 0 ~ * 1 d a i v t d ~ I R e f . 2 ) a m 2 8 9 P f o r ~ a1 n7 7
d
ate~from~tesultaolthcC!haqyV-nc4chimp;lctttst.
fvrbasemaalderpitc~~e~ta~amoddfhat~
AppeodirrGto 10CFRPart50rcquhUntrfunaweofabsorbtd
~fi~gurw.'f$ur~useofmuvtJfancadau~agivto
rtadar(inphofthe~dprocxbmgi~~~~gnide)
coergy vcrsfls
be obtainrd thcough thr? ducliIeb-bristle
m i t i o n kmpmiue region. Tho adjustment of the refmemu
roquircs ~ ! e e n g i n c a i n g j u d ~ r a e v a h t a t a t h e c r e d i b ~ iy o f t b data ad assign rmiiablo margina. WhEa st.wdllaPadata
tempam,A R ~ T ia,defined inApptndix 0 as tht rtmpetaI
from the rmdar in quation bacrnnt av&Ie, the weigh givcp
mrc shift m t
h 1[Sharpy m e for the indated material teMve
1
to that for tho uahdiatcd material nmsmdat the 3Gfooc-pud
~othmrthiyttothei n f o d o n inthisgnidawill dcptndonh
level, aad tht data that f
d !he bash for this gui& wem
a d E M y of dm mill- data as judged by the f o W g
XLfwt-powi sbiA values. The s m d measure of radiatiom
criteria:
c m b a m m t L b d # r t a s t m h ~ ~ - M ~ l e v d ,
which is &find in ASTM g 1
8
5
8
2
.
&vision
m
2 updatw the
1. M a t # $ l r h r h e ~ a s b o u l d b e t b o s s j u U g e d ~ l i k c l y
tobwmIling with qardtorsdiablonembrialemmtacoording
caldtiw @USW
for tha adofrefaff#rtmpahire;
to b rccmmcndation~of tbh guide.
however, dadative
for i
b dacrease h upper-shclf
m x g y ~ u a ~ h a n g o d ~ ~ ~ t o t y w o r k h a d n o t ~
comp1dcdiptimttoincIlrdotheminthistevision.
2.ScatterietheplQa0fCtrarpy~~tappa;rmtefor
-
ths~aadltIih&&cwditio~sbouldbo~maaeormgh
the dckmimim of tht 3U-iwt-pmd t e m p t m and
i a c t d s f o ~ ~ m 2 f D f b R ~ ~ ( i a R e g u i a o wtoypenait
~
1.1 d t h i r l @ c ) i s a m F d i n t d i n ~ k y G . L.GPhteWfu
m
-guously.
2) and G. R. Odeps d al. (Ref. 3). Bmh of tbcsc papen used
s r w e ~ & m f r o r n ~ p w e r ~ . T h c b for
a s a
M u r e p d m rwrtIationr w d difftm in that Odetto mad=
pcata use of physical mdch of
embritdem~nt.Yet, thcr
twopapersoontainsimilar
tiom: (11 s e p m m mmk-
,
tioo~shmklbc~fwweldandbasemtzaI,(2)thtfunc~sirouldbetbepd~ofachemistrykmdafl~~,
(3)theparamtcnhthe~fhar~bethtd~
coppcrandnickd,d(4)~~mww~dprovidead
u u v t dopa of abut 0.25 to 0.30 oa log-log paper at IOH d d
(E > 1MeV), st#ptt at low fluea d flatter high f l m .
4.'IhslrradiaaiontempcratUre0~ths~~htbt
Regulatory PDaition 1.1 i a a blend of the m ~ftmcciom
r ~
p r e s e n t e d ~ t b e s e ~ . S o m a m t ~ d a t a w m u s c d a a ~ ~ m c b v e g s c l w a l l t e m p c r a t l l l t a t t b e. ~ ~
metal iriterfaeewithia fSOP.
1
agui&ia~lishhgaEuto&forthschtmisoryfadorforJcw-
~oppermatcriab.ThebbaseforRt*Posi~rnl.ZhU
givm by S p t a ~ eH.
t fhrsh (Ref. 4).
Themtasrrrsof&leoeeudiafhirguideithsmnnberof
mbmmpa~~kvtn$energits~h1milIioa
t l m m n v d m ( E > 1 MeV). Thcdiffcrmaa h m s p t m a t
T o r r s s ~ ~ d a t a f m m a ~ p ~ i n s t e a d d
t h t ~ e i l I a a # ~ t d t $ e v d k s r v f a c e I ~ n r d bR t ~ P w i t i o n I , o r r ; m d m l o p . ~ ~ o f b R ~
tofllmmforthgtplant.B#-ause&danamlimitedinnumbtr
wrapptartobaw-&towarrardthewofadamagsb
and-wbjectto a~atta,R t g u b q Position2 dcscdm a pwxhe
tioa such as displ-ta
per atom (dpa) OM.5) in tbe anatysh
inwhichtheformof~Zirtobe~a8dtbonutaclehGof~~e~dacPbasc(Ref.6).
.
~
,
m
s
a
a
~
m
n
-
~
d
a
c
r
~
t o r t b t & i s ~ , h t r h s ~ f a c t o r S r ~ e d b y
p tbplantsumiEIarrzdah.OfsevtralpmSbh~raJ&sncb&a,
i ~
w i t b l ~ i n t k v d w a 2 1 ; h e ~ f o r c a l ~ g t h r t;h~s m e t h o d t b a t ~ t h s a r m s ~ f t h t ~ o f t h o e m n r
h a of mdktian cmbcinlcment thrmgh tha w s d wall, it is
was chwn wmtwhatarbikady. ha use hjustifiEdh p a t by the
~ t O u s t ~ d a m a g t ~ b o d e t a m i n t b faaLhat'LI~squares"Lawmnmmctbodforcurvcfiuing.
R ~ ~ ~ ~
r a d i a l ~ ~ r b e W a n . T b e m a ~ ~ d a m a ~ fA uh ,
wwhen& arconly~dappoint*,h l r a s t - m d d
tion atthir timr:k dpa, and the attnmation f
o
~
~
3g i v e s) ~ P r e j g h t t o t h e p o i d w i r h t b a h l g h t t A R ~ ~ ; t h i f
g i v a r i n R t ~ t o y ~ o n 1irbascsontheattmwionofdpa
.1
w m l l a b l s for
sruvdlIanee dam, b 1 1 9 t g M y
Zhrough thtvtssel w d .
bhighadatrpoitnwillbe~mare~and~win~
smt mre madm p T m d l m .
~ytonmmnradEsdaa~~emwrmaybsa&atd
~el~other~wppaandnickd.Tboriginal~swl
R n i s i o n I o f ~ ~ h a d a p ~ s p ~ t e r m i a t h s ~
W,b u t t k ~ h J d i r * u u ~ h i c h t h i a ~ ~ b foudothtr
ascd
1. m
C
-g
DATA NUT AYelmem srrch aa p b o s p b to be dsmmday importana, 1.0,~
including the^ in the d y s h did not product a 8 i g d h n t f y &tcrtitofthsdats.
~RT~Istbcrrfer#loe~fmd=mJrtadiaSad
mamid u; & h e d h h
-P
NB-2331 of M o o El of the
M M E B c i l r r m d ~ Y c s xCI o d e ~ , 7 ) . I f ~ ~
ofinidalR~forthematcriBZin@cwue~r~blt,
~meanrahrtsforthatclassSofmatcrialmaykosrdifthcrt
ue~t~st~tuts~aMIsh*i~caamdEtaadard~tim for the dass.
CE(~isIlftt&dsmy~,afUOCtiOaotcopptfmddclrel
m.CFEFgivaInTfble 1forwddslaa hTablc2 forbart
d@latesmdfagines).~~ipo~ispermirrtd.h
Trbler I rad 2 '"tpereent
~appcr" md "weighl-pcW
~ l r t l "rrt tbc k b d m a r c vllw for the mated, which wiu
~btthemcanofthe~~fOTaplattorforghg
wfurrvcIdmmp~mdewith~wCldwireheafmrmberthat
~ I & S the Qitical rtSSel weld. Ifmeh vllus m
availabIc,
2. SURVEfLUNCE DATA AVAfZABtE
Tbcadjasttdrtterca#tcqmmlhotrldk*rs
fallows. Fi* if*
iscleardmtthcopperoruickl
mrmtOftbG~.rtld~ars~~Oftbtwsstlwtld,
i.e., differs h m bz a v a r g t for the wdd wirt h mtmber
rssoeiated with t
h nssel weld ad zbt m m e weld, ttre
vahm d b R T ' ~ I b 0 U l dbe adjwtd by d t i p l y h g
them by the d o oftbc ~ c k d s h y
m r for .the vessel weld to that
for the
weld. M ,
lhe survtillanet data rhoald be
~~
f i ~ ~ ~ ~ ~ 2 ~ o o b t a i n
flucaoe. To do lo, dcutate the CMSJ'
€amCF,
, €urltbt btst
fit by driplying cach adjusted b R m by icr mnaponaing
flu~~r,Nmmingtheprdum,addivi&gbyebesurnd
~
kqmaofthcfluzn#f8nws,llcrdtingvPhrtofCFahen
cn~In~on2wrillgivt~rdationshipofdR~tb
~
e
~
TABLE I
CHWWIRY FACTOR FOR WELDS, eP
Ifrak~givaabigh#valtleofadjusdref~
ttmpcraht~tthaathafgiv~p
byuslaptheproeodrutadkgnlatorg
Pasicioa 1 , 1 , $ l c s l r r v t i l ~ d a n ~ b s u s e d . I f ~ ~
gives a I o w a value, d m may bt used.
wt-
ForMtiintmaltriatintbereadorvensclfor.~ewpknt,tk
.mt~aftbis~L01provldeinFamatiazb~
dli~rrgardingthtNRCrmff~p~for~this
md
d.ddbe-nbdtobwlevtls.=Tfic~~ g l l i d e . ~ ~ H ~ ~ ~ w s i n w b t c h m q p ~ p m
t d ~ ~ r u c h ~ t b c ~ r d j u s t e d~ rm e~ ~l e~ ~ ~ f o r w n q , ~ w i t h r p s i f i c d .atthtl14Tpos~mintbevcsstlwallatndoftiftLIwtban
m
o
mof tbt Commission"&rtgulatjom, the mttbDds M b c d
m ° F . In tclcaing the upfbwn mount of nickel t~ be ItKd, its
h ~ ~ ~ k u s e d * s f o l l o w a :
dcluuious e f f a w W o n tmbritilemem r b d d be W a n d
dgainstb~beneficialmaalhugieat~cctsdiDteadcacytoloaa
1. ~ ~ d e s c n W i n R g u l a t o r y ~ 1 m d 2 o f
e d ~ eof
~ rtgidrral
t
ctcmcnt~mch as ~opper,pb@mus, rulfur,
tac initial R m .
7 = m m a e b d h ~ u . & m ~ . e c * ~ P A S I 1 1 1 ~ ~ A s
(RFt.
BE.
&i~grridewillbeastdbytfitNRCCFdffhevaluatingdlpdittias of &on
cmbrWneeded m implemtm
J 3
CI md H m 10CFR Part 50.
REFERENCES
I. A m a i e a a S o c i a y E w f ~ d ~ m ' T b d d b5. A m e r l E m ~ f ~ T s t f a g ~ ~ , " ~ ~
~ f o r ~ H ~ ~ f a F a t i t i e S m c l s h
tLx for M u c t i n g S m d h c e T w lor --Warn Coated
P I ~ ~ ~ V d , " ~ E E 1 8 5 8 2 , J d y l ~Turnsof--gcrAaPm@PA),"
. *
#lM E693-79,
An@ IQf9.e
3. Q . R ~ a d . , " P l f y d e a n y W k g r e s h t h r e M m
of Embri#lemeat Data h m Reamor Rusprr V d
SamiZIaDcc Prognms,'"
P ~ o w rM
~
bthtc,
NP-33 19, Jaauat)r 1984.t
7
.
~
~
o
t
"'Nlrdrar Fowtr l k t *',Prunvt V a t ! Cadc. N
M
-
~
,
-
m
m
ef ASRE iBdlrr d
m
York ( u p l a d
-).v
8. Axmbn
tor Tmhg a d -,
"'B
S ~ f o r ~ V e e s c l P l a t e s , A U o y S t s e l , ~
4. S. H.Bulh, " S M ~ i o r N u d c a r k m m ~ , "
lad Tzrrrptrod, Mangaatsc-MolyWmnm d
i n J w r m a i q f ~ ~ ~ c m d ~ , A m e r t c a n S o c i e t y l b r M d w - N i i , " ASlM A S3Uh 533M42,Scptcmbir
Testing d M n W , N o v h 1974..
1382.'
REGULATORY ANALYSIS