ML19242B335

Responds to IE Bulletin 79-01.Forwards Table Re Environ Qualification of Class IE Electrical Equipment.Two Potential Qualification Problems Identified in Chiller Equipment Room & in Safeguards Bldg

ML19242B335
Person / Time
Site:	North Anna
Issue date:	07/02/1979
From:	Stallings C VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
References
NUDOCS 7908080109
Download: ML19242B335 (36)

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VIRGINIA ELECTRIC AND Powza Cour.twv Ric as w ono,Va notw1A 20261 July 2, 1979 -

Tornan C. Moscley, Director Se r ia l No. 90A Divis. ion of Peactor Operations Inspection P0/r 13 :bav Cffice of Inarection and Fnforcenent Docket hc.t 50-333 U. S. Nuclear Fepulatery Corrsission Uashington, D. C. 20555 License No.

• NT -4

Subject:

IE Bulletin 79-01 North Anna Powe r S t a t ion I'n i t No. 1

Dear 'dr. Poscley:

Th is letter is in response to IE Pulletin 79-01, "havironnental Oualification of Claen IT Equip :ent. "

In response to IF Fulletin 79-01, ve directed oor architect-engineer (A-T) and our NFSF supplier to review the environtertai qualification of all clsss IE electrical equiprent a t_ North Anna Units No. I and 2. (3 0C

~-

.~O This review by our A-E has been cocpleted for Unit. Mo. 1. Resul CI are j3 included as Table 1, which contains all class I F o <tu i pr e n t , both p f e t y -i O 4 related and r.cn-raf e ty rela t ed , that was procut r the A-E. * * :0 e-p .v, ,

Only two potential qualification probli s have t N en t if icc : ca .-

1. Chiller Ecuiprent N The chiller equipr ent root contains control and relay ro A air conditioning equipnent. We chiller eqtipnent roon in located adjacent to the turbine building and has a ventilatica duct wh ich is open to the turbine building. Under a postularM condition 2 auch that a stear lire broal in the turbine buildaop directe a jet of stea- directly into the area of the ventilation duct, the terperaturc in the chiller equiprent roon could reach 211*F. Ve have no inferration indiutinA qualification of the chiller equiprent under there conditions. Chiller equiprent affected is listed on pages 1, 2, 3 and 10 of Table 1.

2. T'a f e g ua rd c Eu11 dine Vent ilat ion Fans he ervryency vent ila t ion fans located in the safeguarde building, deri: red as seicric Clase I, are proviced for ventilation of the recirculation spray and safety injectirn purre ares in the unlikely event the ventilation exbcust s y r, t e- is disabled. The ventilatice e r.b ou s t systee is run by two scieu-ic Class I fans located in the murillary buildine and has the capability of divertine the effluent through the cc:ron iodine filter bark. Ventilation is designed to lirit terperatures during varp weather to a r. axis:u: of 120*F and 50; 2]' 7f 0 Vfd u r1CIAL COW.

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• s Fr. hornan C. Moseley 2 durin cool werther to a rinimur of 75'F. The spaces containir.;

the recirculatine spray and safety injection purpt an/ cir vcive roore are subject to potential radicactivo con t arina t ic fror pland leakage. Our A-F bas esticate' that under accident cand it ions the radiation, dose to the encryency ventilation f ans could reach atorext-retely IV rade, be have no inf o rmation on the cualification of there fana to euct e re(ietton exposure.

We vill certinue to pursue crelification er an alternate resolution of tt.est two outstaniing items an( vill inf ort. you of our actions on or about July 31, 1979.

Ouslificatfor dete f or sa f et s-rela ted equipraert previver by the '4SF vender are incluic/ tr /cco: ent e which have pr(viously beer cubritted to the IFC as verder proprietary. In many cases the nori-proprietarv versionr of tbene documents which we have receive! are not sufficiently detailed te ceterrire quelificatior. We beve r.a/e arrenrerwents to receive tcrc c'et eile? docurer t s an? will ferverd cuelificatien data in a s ub s e <;u e r. t sub=1ttel or or utout Je l5 31, 1979 Ir Fulletin 79-01/. vcs receivec followin,- tbc final preparation of the a t t ac ',ne n t . S4 ve rcl A F2' scler.cid valves pr eviousl y idert i fies as net qualified have been re;1acc? or will be replace d as soor. as reseitle.

(or letter, serial Th es e valv e r. vt r e locatef ir the PC5 sar;11rt cyr tet no. 466, da t(( Jure 14, 1974, art addressed to Mr. Victor Stello provider a/<'itior ! irf orra t f or..

Very truly youre,

h. } l. J ali. f;J C. b. Stallin3 F Yice Freet/ert-Fower Supply and Froduction Operationr ec: Jarer P. MFe!11, Tire cter Offict of Intrectier a:.. . F n' e rc er e r.t Ferion II b: .,

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North Anna Power Station Unit No. 1

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Environmental Qualification of A-E Supplied Class 1C Equipment -

Table 1 a-JitPw P t fe ve r iet iM S Mark Po, gie-dpOM of AM14eet f avir mrod hvirement to W ith Fa'11o. Is OJalified P. saner of O'alifica*iot N e t t fir s

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's s Stui erwet f* *egiet ica f Mart te-) . pjeerlation of Accide9t Enviroe g Enviroceert t ra Wich TT.tle, f e Oselified Mwer of Nalification N ellficc tion Mawnt A.ir em iteimtas_feir-clee int stsla in tarttee nieg. rquipment mone 1 g e3nyl - 31; act .pteny; out side crane well as,osed to :

1+rd-s-ta.9s P.O. LA- was located La Chiller Som. 1. siq% ambient t empe r.t ur e 211er Skme Ekme for duration of steam disc >arge in wie La tt y of chiller room air J sta te s - 30 mieut e s .

2. E Lgh ambie nt misture content-enturated steam, toot 35 for dusation er eteam discharge = 10 m1 mutes.

s Propel'er Fan = 1eroe ses ran W12 in turbine b1dg. Equipseeet 1. Eigts ambient tar.per a*ure 311*F

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Detret Description a Part. % m sv1pejon af mecieent rnetr2nr_*n1 Fmviroveet to etch rels . is %elli g P4rf er o' Ouali fica' s Duill?te4'lon tesm P.O. MA.133/112e

• Otzrtite's ragireerirg Report 600 V CN. Power Cable Test = Sequent 1A1 bo. 141 datz,2 2/21/72

@wite Lost-of Toglyit Accioee d Q1 ggg-of<.wy h t_fgripert (LQCR G to 30 Mi a Aged 168 hr i 121*C 7 ?it t loa a l Nwrt i r s M.P e-tJ W29 1/u 210 MO1 200*F BCA-21 1/e 2/9 Ab0 Deduce f rom 29 0*r Irva114te1 to 2 r 14e rads IC D- 15 Tr iple s e s AW to 150*r 30 to 60 MLn Outlire of Frank 11a Instituta TTiples 96 A 4 1SC'F 163 kla MJ rpo m_qe Basearch Laimaratory Ie'gets P*C3hSt 305-14

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• 17 3/c 4 0 AM tS paig 0 to it Pio se gsig e 32e*F For 4 hr Batuce free 65 33 to 60 Mia 16 psig & 2S2*F for 7 days 12.E7 Transactica Paper T 74 Cat e 3L5-10 3/c 913 A4 RCA- 19 2/e 612 AWG to O pe 4 pelg Me Mia Spsay! 10,000 pro terie acid 7.2 s to. saa rufforca with u.cs to e rn of 10.1 t1roughout tJe Ph5 ex p)su e period Spray:

0-e hr soluttaa of t>oric acid M1}iney t ed ea_ctpr F*ro_.1.or_* ( W' )

(2 0 0 0-21C 3 p ga bar onn bu f f er ed to A scrits OE 144nsteht c p le s eac % 03n*

• a p3 of 4.1 to 11 with kaOla eist irq of a rise to a sgecafted press D4 hr Similar solution and tasy for a specified t me and a vita a pa of 7 to 9 gra tua t rete to initial -on 31t t er.o .

Following transient cycles 100 day exposw o to thee steam 0 ps 7, 212*F Test = Analysis P?i9 %=11f1*nt ion W2-ent s te enemura tacindes a trans. set cycle at 10% poig at 345*r fcer 3 hos s and Maalaus calculated surrace temperature FE AR sectlen 3C ard resgense to 20 m'a. during limut an y P.513 is 335*F w M eh Coure.nt 7.17 (Note to be rettsed does not escoed qualification to inclate El.am ata_a) .

Bala tiram t. ire areak rarJ n stja sagerature of 345*r given in ren D.) - -o...t,ue. ., s.ude.t

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e Sgtht Deser LL'im E Pare Ng, pegcrlp3 toel C.f Acc1Mt Prrviro p_IL fu t ronmet to ethic' ferst r. Ie 96alifis. 6 ,er of Ossilftestices E*'11 f Ica e !^m Wm t p*o, ma.} ggf g }gg magn Te parature Ca'sle Test = Sequential Franklin Institute Research Ce 7 e wire n c C ele C n e.3g Lo s s o f f.colar t Acegget fM al I.Ja.,ratory Peport T-C2457 O

EA-15 Tripleu 250 MCM 283*F Cerro s e suylesd at to F.I.R.L.

KA - 17 TTiples #2/9 AwG 0 to 30 Mia Irtadiated to 2 s 10* rads # '

as;4-3 3 9 J .m f rcum 3 8 3*F 10 patg and 276*F 12 hr 6/o 2-el and e-813 to 150*r 30 to 63 Mia KA-4 8 7/e e 12 14 153*F Franklin In ite Pesearch is; D- 34 e/o 816 AkG e5 reig

>60 Min Sprays Last 2 he of 12 hr geriod witA a  % ,, tog.y ,st. ,. cr- F-C2753 sCS-37 0 to 20 Min 3/s e8 AMG Re Ace from 45 s alution of bor ated wat er cretaantni a g.pr on ume t e ly 1,720 pps of laaron e s torie Cerro*a supp' esens to F.I.R.L.

to O poig 30 to 60 Min acid gg my ,o 3 peng 360 M.in 7.2 a 10* rada ped, ed to 5 psig an.1 1&u'F over an Sprays un.sr cLited tar e with spr ay cantimaing ut F at 5 poi, tor tre rema tnSer of tAe 0-4 hr Solut.f est of toric acid 7( y perac4 without agray (2000-2103 pgn borarq Ouffe o to a pe of 0.5 to 11 with haute F -C 750 1.ndicates that in an earlier test the spray was bu'terans wita

' >4 tLa SimLlar selvtlon saca to ph of 9 with a pt of 7 to 9 W M12

• 18*F 0 to 2 Min II3*F same se =oseertation of Accideas 3 to 60 Mia Environment

• t'. mears- 165*F >60 Min

% .. 40 peig Twsperature - Analyste FSAn Section 3C tnd respocse to swevireep e tm 4 0 M1.a Costner.t 7.17 8 f a ig )60 Mia g .r ed 3 a 13' rad.a Maxism calculated surf ace tearpera=

ture during 11 mating r.5IJB is 335*F pockbasto's lettir dated 4/25/77 whici, does not exceed qualification r'r

• a, twperature of #63*F gLven in IDCA qsalificatica doc %saate

• • -n' ' * :~> socAbestosa trormerly Cesro) letter dated 4/25/77

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De scTirtiors of Acr1 Cent Feh m 3 Die t rgm t to

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• r ed e M " 8* w M 3.I.W. Lettera datet Cfootsn 1: hleted h arg and cable) Se!uee frems 230*F o to 30 ala Liv i 7 2 283*r at eS peig 4 3 m2.n 12*1**71 to 130*F

$,$$* 4 0 e/o to. 16 AbeC tt0*r 19 to 60 ala 205*r at 0 peng 24 has icA-ss es/e a.. 36 AwG he mLa Aprays throug hout 25 tur $*riod es p.t, e to 32 ata DCA*6) 19/e pea. 16 A>G Sta .4 e Ravtuce from 45 Seleties of 0.20 solar boron as borte 12/o neo. 16 Ah3 to O psig 30 to 6 0 sta DC.A-4 9 2/u me. 16 Amc e peig 360 als a-14 with t}.e EE adfusted to 8-8.5 wit.h tr.a- 7 3 IS/e ens. 16 AarG 7.2 a 10 ' g oda a 0.019 autar solut.non of ha04 303*35 2/c me. 16 A>c spray ELa-39 3/e bio. 16 AwC 0-4 hre soluttom of bogie acid (2003-21C0 pre borent Nf fes ed to a ps of 8.5 tc 11 vstA nece be hre sia11Lar solution witA e pa of 7 to 9 c ,

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g Min f* eam Ling _2 tut L*3L31 g Temperature - Analysis PSAR 3ect.ica 3C and respc.sas 430*F maximum calcular ed sur f ace to scss;. ant 7.17 0 to 2 min Sasa as *Descript Los of Accidest e m e rature d4r sq 11.-tit -

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f Emitrunget peyeriction a w e rk so. Ein.gtetim of Acciaget tavigstg3gt trwir12fu'1M to.bih ITain. Is Nilified ps-cer of Oualificatim Qtq1tffey ton Nv3 p.O. est-)s e /13 e e g el-of-fr>olut Accid **t Itncat g m g . Sepeatial 6CO w Alminus Faneer Cable Ch mite *a En;1neertng Peport 0= w i te 200*P No. 141 dat ed Fe bruary 29, 1972 0 to 33 min Aged 16e hr at 131*C Beface from 200*F Irradiated to 2 a 108 rade 4 IC1-S Triples 300 por to 150*F 30 to 60 mia p.+1gjen,1 g ra-c r e t e* W :* eats bC3-7 Traples 253 POg 1%3*F Dm0 min M Iwposuzes aK. 3- 11 Tr i ptea e 2/3 A6G. 45 peng 0 to 33 mia Outline of Frarilin I.pstitute 32.*r at 80 pelg 0 to e h,r DC&*13 Tu t plea et aw.. s e tuce from 45 to 252*F at 16 pet, for 7 days Research 1.au retary Deport F C 60s O peng 30 to 60 min sprayt 10,000 ppm borte send buffered e pelg 360 min with taaOB to a pu sf 9 0. 5 tr.z ouq Mut the IEz2 Transaction Paper T 74 {tt E 1.2 a 10' ra&a pwn eryosure pertoo.

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Prat m e f+ervietton a part N G*2trietten of necitent ta*11_c a rt tantgarent to *PRh_ LAMP- If_23*11flei tLarrer_ of N.nif tentien u w o n. set rA-tes daltnr.31en Nam et L1 Alt 3 4 t ch '. e aces-of-cm1*ni.JisM*2 a T=1 knca sequem tal rest -

toca t es en tae f 11 wing at1*r e tc 30 La se,ers utsta-s e contsel valves seexo f rw 2s0*r seat aging a 200*r for 200 hre pecunicat to 150*F este, 100,000 cyclee under elocuscal lead seat A.a ing Tv-en Sc0s. n. F 30 to 60 min cc lois -

is3*r 360 ta se0*r Mechanical Egtng *oualification of r:eco controls itmit awatch Mo<*e as ret, e to 3 hre saliation tiposure Illi cr loss. 3, r e to 30 sta aosuce from 3ec*r s tata rd s 3 = = (*153LA-10 Cr 1014 5, C seduce from as satsarc rescue and 3:2 e72ja 323 ( 02 to.3 to e peng to 320*r 3to s hre seca Test E. 1309 0 peig 30 to 6 0 min SEQUTMCI DIFEATED da t % 3-3-7s and rewteed e-7 7s DC 130s 160 mia 250*F to 3.5 days RA 10:C 7.2 m 10 ' s aSe 200*F 3.S to 33 days vc 1009 Sprays 70 pst 0 to I hre

$5 100A 13 pol 8 hse to 30 daye SS 13 tA 0-e t.s e selwt ton of borto ocid (2000-2103 ppe baroni buffered EJ 102A a pa of 8.S to 11 with M.ON Radiation Erfoeure 2.0e a 108 rede ES 13ek SS 106A > hse elaLins solwthon with a pt of 7 to 9 Spray: Soric acid and water buffered to SS tilA a pH of 10-11 wit h ha 0R solution for e days, water spray f or 25 days spray der.41ty * .013 gpn/f t e l'E.2 main

• team Lire Etenit f**tet t113 a '.cula tion 430*r 0 to 2 min ESC Calculation 11712-1.5-197-4 240*F MaziJaum eurfsco te*perature is 285'r pe. dated 3-Te-78 3 to 60 mLa ESG calculation 11712-ES-117-0 date3 141'F 160 min ao peig 0 to 43 min 3-16-74 and le well below qualificettom O peig t em pe ra t uz e D&G id.n RadiatAon Expoemre see IDCA Test.

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F.O. %-15} jf s p.g g T5"21Af t M C 12" IU M M e i-a f-Qole n dem-JJUM h' tor was tested sequenttally by Terical Peport ce G.E. Vertical I La s t e sb jec urm; at t o tf e cm.1 s tive INw tae, meore In s & *w Contatar b.eLae sectre, agedy Pump Motor 2SO*F 0 to 30 min w.. r ..e . > r e F ~r* * * .i m sa9 ' e% pstg ** s adiat. ion Aee are trea t he s t a agr- ac ar c44 tic n ! grey P sp motors 6e etal tiectrie - 303 hp, e60 v,

1. P t.r.. Claea a ammalauen, se ?uc e f rene 30*P a16 sw.i t c.ii -. o.3J LL,.~ P ressure w a cAwca l aps e r * & ta elevet*1 awry fu.es stataca - s ec cre.d to iso *r is s 6e mim. m e d . ,1 t., paa, at o3*r is=r =st.nin temp.r a ta.s e an.1 pre s swee. As: .-An to Cover coat Nay, alude13 SE 6 31 s.J13 Ig3*F D 6 0 m an . aest J 3 su n . Durang this 13 em stems Ra 1. a r a c n E s.=> .ur e. V Abra t im ,

4S peng a to 30 min e .po s ua s ente r = 2 : ern m ed alta cr e ac al stat-/ % s. cal , f a y Lc,c. ;u.se Reduce t roen 45 sol o,1 tm at ,3 q; re . P% tot =a s at t ull (/'ala t t Ca t tu a h a t. - - M aet m.a tm 0 posg 3 0 to 6 0 mia las J t hr .= 9's 4t. Four ryc l e s w s e ru S3-40 3 eras $ J-J a t ty n.w. anee O pang '43 mia as dc ocz at e st a te n , e r og o teg set or tm-t we en Vertical ruter Procuct.a Sect.ca 7.2 a 10' rada each cye3 to t =4 re sd a n : At the t.ith Ceteral Llectric Cm pa.ny, eyete till ena of 7 a' y t e,p r e duced t o San Jase. Calatcstaa sprays 0 to e ILr salu . a ion of borte t%*r at 0 pesa and strayej con t As.u. sus ly Jwne 12, 1973 M es 36 to 64) acid (2033-2103 pssa boson, tu fered w a t h ch+ra cal solution.

to a 58 of 0.5 to 11.0 watA h.Ja.

he y os.1 e kr a a lma.la r sol ut_n on w a tJb P,.* or wa s t rTesed to an a pa of 7 ta 9. D.;jt e u te og dnq e -r-t due of 2m to o rada et a an,, r. . dose s at e of *0.5 y 10* ra's/h r Q

gut w Rfeleal.Irrat - Spray centinuously 0-7 Lu. h ys wtth a = ster solutaon og torte acid, p ar , g 11thitse hy $ s t = LJe arJ su11tme M J r omane gmJ entth the f ollovacy concer.tratacna s Em

<9 y-a hor ce - 0. 2 3 ew>1 ar (a s boric acid)

Lithiusa hydron sJe = 1.3 a 13** soLal sedawn bWr maJe = 1.0 m ice n um,lat r.m y t, s En <,

71.e atose will resalt la a pt of 5.5 to 6.S.

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l hier.at n 2nin ton a me rt No. pejerict1on of Acciern I.evt a*-= . n En-tr w ent e o *1c'_Inf r.JL.sv elt f 1*4 e -er et cm.eitftratirm atl.1D ea t t ea N e u-~_.1 va-3%S P, L, eten, ur e er, et c TL P o in s t e s, t t c a r t*p t-s kt.L Inside poetre. Spray hany notor e30*F 0 to 2 min Icepege m - Moto. was walified to ne awor was matified by at ti.iteg Neral taects te asa np. ens v. 2n3*r 2 to so ala te. 4.etyn aneironment try analyst e. the suct qualificarton test resalte

1. Pleal saf ety analyste Peport -

1.15 s.r., class a smaalation. itser >6o ein 1... r a st ation e rrosur e. t er ce r a t ur e ,

sect nen 30 tr*9es 1 to 2')

M18 Sall' uJim as pet, e p.t, e to 60 mia ZIn 2 m - 58. L.JCA tru ellfication fer sressure. A test trareter ca n ulatten 2. Tr>ptcal Petert ca ce vertiest

>60 min ti.As =voor, wie per f orwas tee t , r;o . see .on ): ream oe Lt:rs - re s t ae contain-3m us e rada te e tita ta tre ranto m a u face r e pe r .n- rent recircu2nti n strar Pep re nnjoa - Motor was esposed to an two ti.a t w t11 t e e ne r. enc e s s - tr i rotors - su r r y P% e r 5t.uon -

e,t va t r t et.c dose of 2 = toa rar et a done a r:1.n. na s value i271*r> as t*e= seco,1 e ., to c over = eat sete os to.s a is

• redAr. en cesse to tre value tas:*r> e t t.n. a u r. g . Facisener t ra s re, vara-as,t cr wa s t es t ed f or . 5.nce tr.e roter s tu. ar J 5tra /d e . cal 5 stay was quinitfie1 for tre W at a tem- &,c one (Na lt f t s t te n Test s -

gerat ur e c f 2 e " *r, tJ.e lower s atace tecnet I vler 't-210 ar.o ".,3-281

! toute ra t u e o f 211*F proved c e by M. W. Steets i

acceptable operation of tre motor Vert ic al Pc t or Product s f ectlan,

, eartag a R$:.A. Geneast E.e nric Co v ny -

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1. cst st-coeirnt Acrident fLot A "htaed taersal and r adiatie. .,ta, nayene. tect tca2 m, port mots, pertas f ollowed ty a s tmultanecma .3aa. 1175 tayehen heat abstakahle. tiald Pa tisf e c=}: 1a 10* reda (ba sed om eyLaesag matertal bC3r type easted 76stulated loes-ef wlant ace & dent with a esposure to steam. caenical spray a sa - - L4JCR) . Ze medation. t.he realeriam esposus e of 1.5 z 10s r a pies and ge m a radiatles ernts Type-Is adheatee 40 yea sadaatlas dose an additional Sa 10 e sads of gaxLa of a= 10* rede e=st be irrassettee f or a total qual.!ted does et considered for a total possLble 2a 10* reda radLataos dose of 1.S e z 10* rada.

Royuhaus high weltage testimatienna Pan et163 1m 10e reda (based on irradleties of the matartale la a cobalg seguence of teet 1st thermal aqLag EVT Raycben Report 071100 movtatan 1 6 ec'a 84CA1. la ado atlen. t.%e & O g ausma e our c e a t 0 . 50 ma a da per h.aa. tan thma artadiat m 40 rear radiation dose of 4 m 10* rada tetAL doses of 2 a 1J* re.is su rg be coesidered '

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