ML18227D294
| ML18227D294 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 12/30/1976 |
| From: | Robert E. Uhrig Florida Power & Light Co |
| To: | Lear G Office of Nuclear Reactor Regulation |
| References | |
| Z-76-433 | |
| Download: ML18227D294 (10) | |
Text
NRC FORM 195 U.Se NUCLEAR REGULATORY C "MISSION I2.7GI =
NRC DISTRIBUTION FDR PART 50 DOCKET MATERIAL DOCKET NUMB 50-250 61 FILE NUMBER TP:
G.
LEAR FROM:
FLORDIA PWR
& LIGHT CO.
DATE OF DOCUMENT i'2'/.'30/76 DATE RECEIVED 1/3/77 Q I.ETTE R VORI GINA I DCOPY
~wy C3NOTORIZED ZlUN C LASS I F I E D PROP INPUT FORM
~ ~
r, NUMBER OF. COPIES RECEIVED i
4OI DESCRIPTION LTR. RE.
OUR ll/24/76 LTR.....AND THEIR 12/2/7 LTR...
TRANS THE FOLLOWING.......
ENCLOSURE'EFERENCED LTR. DATED 12/2/76 PERTAINING TO THE FISSION GAS JIELEASES.:;..
( 40 CARBON'SIGNED CYS.'ECEIVED)
( 4 PAGES)
PLANT NAME4 TURKEY PT.
8 3 8 4 DO NOT REMOVE ACKNOWLEDGEDjI SAFETY ASSIGNED ADO 3$AKXXJ3 JR~OCT MANA E
--L C -ASST F OR ACTION/INFORIVIATION PROJECT MANAGER LIC ASST SAB 1
6 7
EG F
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INTERNALDISTFIIBUTION SYSTEMS SAFETY PLANT SYSTEMS i'V SITE SAFE NRC PDR
'I &E (2)
OELD GQSSXCK & STAFF MIPC CASE
-'IANAUER 1IARLESS
=-.:. PROJECT 1IANAGEMENT, BOYD Po COLLINS HOUSTON PETERSON MELTZ HELTEMES SKOVHOLT LPDR MIAMI FLORDIA TIC:
NSIC:
ASLB:
ACRS CYS HOLBXNN HEX¹I.MAN'
'"'SCHROEDER ENGINEERING 1fACARRY KNIGHT
'SI11WEIL PAWLICK REACTOR--SAFETY ROSS NOVAK ROSZTOCZY CHECK AT & I SALTZMAN RUTBF.RG EXTERNAL DISTRIBUTION NAT LAB REG V.IE LA PDR CONSULTANTS:
TEDESCO F
0 IPPOLITO OPERATING-REACTORS STELLO OPERATING.TECH EXSEN11UT I WR.
B E
MQNlhVZKM ULR KSON OR E
0 SRNST BALLARD SPANGLER w
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SXTE TECH GAMIfILL STEPP HUL>fAN SITE ANALYSIS VOLLMER BUNCH J ~ COLLINS KREGFR CONTROL NUMBER 30 NRC FORM 96
Igloo gJ~4F [
PezBatory cj'
$~1QP
- pwjl, ggp'e5 pcs IO. BOX 013100, MIAMI, FL 33101 y~g I/~
FLORIDAPOWER 8c LIGHTCOMPANY December 30, 1976 Z,-76-433 Office of Nuclear Reactor Regulation Attn:
George 'Lear, Chief Operating Reactors Branch 53 Division of, Operating Reactors, U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555
Dear Mr. Lear:
~<
)ace~
,~S 8'f~
~
~1.
A Oa~gOW>1'p cO~) gyipp f
Re:
Turkey Point Units 3 and 4
Docket Nos.
50-250 and 50-251 Fission Gas Releases Your letter of November 24, 1976, requested that Florida Power
& Light Company (FPL) evaluate the effects of in-creased. fission gas releases on the safety analysis for Turkey Point Units 3 and 4.
Westinghouse Electric Corpor-ation has developed a generic position concerning high burnup fission gas release which we believe adequately responds to your request.
Therefore, please refer to Westinghouse letter NS-CE-1302 of December 2, 1976, from C. Eicheldinger to Dr.
D. F.
Ross, Jr.
(attached).
Pending our review of the additional references listed, this is the FPL position on this subject as applied to Turkey Point.
Units 3 and Very trul
- yours, Robert E. Uhrig Vice President REU/iQS/NLR/hlc Attachment cc:
Norman C. Moseley, Region II Robe t, Lowenstein, Esq.
PEOPLE... SERVING PEOPLE
0
.<<f;~'
l 4L >~~
~C
IiS-CL-1302 Dec( mbe!
2 q 1 (I i;;
t,otter D.
I:,oss '(i!:C to. C. I:icl l(iinge:.
. Da'i:<"d I'over)Ibei
?3, Dl.
DQiil!God F
- Ross, Jl Ass i s tant Diroc iov foi'ieactol S<<1'~
flivisio!iof Syste;.;s Safeig Ofi ice o<
!/u "1(.:ar PQ<<ctov I4":(:I:jati<on U.
S. Ilucleav Ilegulatovy Co";:.::.i..sioi!
I!asl! ing'on, D.
C.
2C555
Dear Di.,
Ross:
/,s.i>>die<<ted ll'hQ ref('.I'('.n('.e( letter, I" st"i!igi'!!l<se has hcd several I"<Petings
'I'!'itll you!'t.<Ii"I'n the effect of high buvi"!II) (r'r<
i..s'!I()I
(;<.s
! Qle<<'e a!!d ili!pact O'I'ncrease(<
rod intevr:al pressul e
Gli
< ic<'y <<I a lys.s.
I e have <<lready adv ised the St<<f'f 'l ~) ') ~) of tile resiil ts Gf deta i'I Q(.:
c'< ~ ! ('<llat ions pevfovI!ed ':!'ith a fuel vo(! b'hav'IGI I;.G.'
<!hich recog<nized tl!: incr:.<<s.,": fission cas release.
fhese an<.lyses dei!0'ns r<< ~":."
t.
"<. fue I Gd ill:Qi'!'"~
pi"Qssul'Q i"111 !lot e> cee(I system press(!re in any I!estinnl!Oi!se-(lesigned I'u. 1 pvio" to Ila!"ch oi" 19/7.
Fui ther, i!
have recently provided a (!et:.Iiled "<<fot<<an)!lysis(-') of limiting accidents, i'!I'lich deI!Gllstrates tliat foi" tl'.e high?st I <<ted !'est1nghouse
< llel, i!ith higli initial I)re-I)ressuviz<<tion, increased fission gas vQ ease i;ill vo~
have a significant adve! sQ impact on <<ccident corseoioi:ces at any tir<:e in des jgil life.
I!e have re(li!Qsted ti!..ely reviei; or" these analyses by your staff.'n pi ior disci!ssions i!ith youv Staff, I!estinghnuse has poillted out th<<t it is inappvopviate to atter<pt; to "corvect" a fuel desigii I.o(!eT by simply I!,Gdifying one I)ortion of the mo(iel.
Bec<<use of feedback effects of fission gas release
~
on such tliings as cladding creep and fuel tcr:pevatuve, an incnrvect result i!ill be obtained.
')!e also emphasized that 0
~ Yely extensive effo! t has
(',on into our ovQ!.all r<iodel revision to account fov recent data
<<n(i high burnup effects on helium solubility and fuel si<elling and densific<<tion as I'ell as fission gas
!.Ql(ase.
Use of appvo>;ir;:.ate correctioii facto! s to tile previous design I.;odcl cal'i!lot result in a predictive capability i'h-ich is co.-.parable to ouv !Qvised nodel.
Thus, I!Qstinghouse
- argued, and the Staff agi eed, th" t the s!I(Iqoshed IlPC stop(ao r<!easure sliould not be used to assess tli(. fission gas rele"se fov l'estii.gi.oiise fuel.
2 P
I,'(:<s L','j:"(.:Use hei ';
vr 'i !'I)',;t 'I fi<'.',;",('l'iZta I:, <:1)';".,'i((('..'.n (l)e fi!.C s<) t.l s vy
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i!)0 )li"(.".I.'!oi
.;!s "i!'!:.ho'!':e custo(! '! s (oui;1 '! !.':(!
'i >> yol'1 1(.' toi
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M ( Ac(:
I QsLi!)(;house f)as <:>:;>..:)-i!);A(aj d.",;.'.a an(f
<.)) (!A(1ytical c<-.p..i>>'I i'! v io (Q<(f l"it}ii).c) e<!::0;! fi."..sir
) (i<,s ).01(.ase
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Ii f(!! i 0;.'s ti'(Ql'0'!'ni'0, illa (
KI)0 't0 (l!. )'rh) ch the
'! UQ I
)"0<'cl)e.'r an e>:fiosu).. o.!" PO A:,':. I!'. il/'i'lJ (ii0;;: "a" of ynu) 10ttc; ).is of ro consequ nc sinc0 tf)( s'>Qc")'i(".'ruv))up )'l(l)"Qly se) ves co l.)"ig:;ev ih:.= Use of t(le. St<".ff
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co!'! 0 t'.c! l <<cio!"
i 'f".", v'(!"i (!o Aot h<":v::
<! })t'LQ) !i'..'el ')ng cap< ()')1') ty t})an that p) 0'(<i(!':.'y ie Si('ff I '(o(}0 I.
I 1'he l'.:eeti! ('s ),itf) y !!)" St" 'T. and O'Llv
) ('.cion('ly-suf>f'lie(f safe('y an" lyse's flave disc).ssed ouv rost 1!)Aii"ing'):01 conditio!!s of po: er, bu)",))up an pve-pre. su) izatlon.
! here'i'0) e, OU) custoi): ')'s <lctual fu. 1 COA(!itions are boun(fed by.tl'!ese <lnalyscs, Consist(:;)i
); ith yoli sia(te)ve>>t that, such I'ou) d'inq calcu-laiin)ls di'0 acc(:pt(;blc; l;"0 )"}ll <dv'Ise c((ch of GU)" custo(,e) s to )'QferQACQ this letter to s<,tisfy your re(,nest
(.itc!(~s b, c, a>>d d).
IV Ihile ihes submitt<als
<!) 0 fu!ly 1'Qspo!'lsivQ to tl;e S a(l'
)Qquesi
- and, th'vefove
'Kl.0 need to employ the
)"eco!:~vended i'("!C co! l'ection fc".cto) does not 1)'l s0, I'sti i'!ghou."0 b0110ves ii d ppropviaic to
) e-0!!!p.')asi ze our col'.Ce)"n
)!ith t;,o asf!ects of i.he St< ff vec}uesi.
I:ivst, ihe error i)".plicit in using a co).veciin;) f((cpu: to only one portion o.
a fuel l>ehav)ov )aodel deserves
) e-Qillph<ls is.
I!".. I!ave
(!>< fl)in' t}IQ propose(f co)")"ection facto!
<;Ad h<" Ye co)"clu(!=.d t!):t it leads to la) ge f>).edic'i;ive..vvovs, particularly fo) fuel 1)"red'i<"te(f to h'i(;I: !>Uv';)lip <.t 1o'!v teil)pe)"<"tuves, UA00v these con(iiiions,
- 0) rovs of a fact(j
l)av0 bQQA note Of evQA g!'QB tel'oncc')'A t}'!an ti!0"Joss'ible ieci)>> ical i)i ((fequacic s of the Hf(C's sug((0ste(f col rect'!OA factor is i!'.0 pe)"ception that ihe Staff is once aqa.in ado!>tin-the role of pvir)avy );o(l01 d velop r fov the industry rather than )):odeling solely for the puvpose of r(.gula'.ory vevie.i.
Sp cifically, the data Us('.(f f)y the'taff l as put) licly available io eac}1 of the vc.ndo)'-s aAd could
}1<)ve beeA used by them, in conjunction ),"ith ot!)el (frita they r)ay have
- had, to develop indiv'idual,.teci)n.ical positions.
In <dditinn to any regulatory delay vhich ))!ay have been associated nith the Staff'.)<aiting to (Ievelop an internal posit-ion pvior to issue of the referenced 10tie),
the Staff's aetio))
})<!s 'discouraged the othe)'endors fror))'pe)-fo)'ming an in-depth QvalUation of theiv fission gas veleas0 nodels b<<providing an "acceptable" covveciion facto) l'Qstlnghouse st) 0J",! I Y Urges
'the Staff'o reconsidev.the approp! iatQn0ss o)
!.0'pe<lted <..ctions<<'i~)
).hach have the effect of nbviat'ing the need for individl!al vendor e>pevimental
<n(f a)Mlytical effo).is.
YQvy t) uly.yours, c
C. Eicf)eldinqe).,
flan<A
)
Hucloav Safety Deparf..:)ent
/cls
1.
I es'"in'.housei'!fiC f',::;.t-'ng - Sept..;;.'>er fG, 'l97;!
2.
I"e..'v'i n4'Iiousc/faf'.C I'lcc Ll n~ - liov<i'.i:)er i g 19i6:
3, l.ettei.
C. Eicfield-'.i.,er (l.') to J. Stolz (ffRC)
I!S-C':-ll';f': ju.gu.",i; 2, 197',
R"-. ise;f r<;1 PoJ lni.em(..l I'resi ui e l)esign f~as,s
~f, I.c!tier C, E icfiel(I'in(fii (i' } to 0. Stol 7 (I'aR(:)
ffS-CI -ll'6'., I'oveii.ber 2, 1976, Ii.; roved foal,t;ic;1 Hodcls Us('.(I in I'est".ti<,'ise Fuel Ro'I Design Co"iputcit fons, 5.
Let'e'er C. Eicf:eldin'.'er (1!)
'~o D.
P.os (flRC) hS-CE-12"2',
ifove ii,'.e'er 7':, 1976, S<".fety l'.n:".l.:,~s is for the Revised.
I uel Ro(i Ini:ernal Pi'es;ire Iiesigr. Ba"is 6,'e"er D, Ro.s
{I~RC) '.o C. Ficheldinger
{Il)
Sefiier>bei 15, 1976, Fuelograms i'or I PR I uels 7
I'Uf<EG-0!)G5, The f'nalysis of Fuel Lensificat'ion