ML20086U052

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Forwards Applicant W/Encl Re Util Pressurized Thermal Shock & Flux Reduction Program Per 840228 Request. W/O Ltr
ML20086U052
Person / Time
Site: Turkey Point  NextEra Energy icon.png
Issue date: 03/03/1984
From: Hodder M
CENTER FOR NUCLEAR RESPONSIBILITY, HODDER, M.H.
To:
Atomic Safety and Licensing Board Panel
Shared Package
ML20086U033 List:
References
REF-GTECI-A-49, REF-GTECI-RV, TASK-A-49, TASK-OR 84-496-03-LA, 84-496-3-LA, OLA, NUDOCS 8403070143
Download: ML20086U052 (7)
v • d • e


Text

-

MARTIN H. HoDDER ATTO R N E T AT LAW

'I'I'*

s 11st N. E. SGTE STREET M1AMI. FLORIDA 33138

'84 Igg.5 p;9;gg TELEFNONE 8808) 7814704

' -[hjfC UNITED STATES OF AMERICA c'-

'j NUCLEAR REGULATORY COMMISSION THE ATOMIC SAFETY AND LICENSING BOARD BEFORE ADMINISTRATIVE JUDGES Dr. Robert M. Lazo, Chairman Dr. Richard F.

Cole Dr. Emmeth A. Luebke In the Matter of

)

Docket Nos. 50-250-OLA

)

50-251-OLA Florida Power & Light Company

)

)

ASLBP 84-496-03 LA Turkey Point Plant Nos. 3& 4

)

)

March 3, 1984

Dear Members of the Board,

Please find enclosed a copy of the March 25, 1983, letter of Robert E. Uhrig, Vice President, Advanced Systems & Technology FPL, to Steven A. Varga, Operating reactors Branch $1, Division of Licensing, U.S. Nuclear Regulatory Commission, with enclosures, regarding the Pressurized Thermal Shock and Flux Reduction program of the Florida Power & Light Company for the Turkey Point nuclear Units Nos. 3 and 4.

This copy of the letter is submitted to the Board in response to their request for a copy and my promise at the Prehearing Conference on February 28, 1984, to provide a copy.

urs tru W

Martin H. hodder Attorney for Center for Nuclear Responsibility and Joette Lorion cc.

Harold Reis, Esq.

w/o enclosures Normar A. Coll, Esq.w/o enclosures Colleen Woodhouse Esq.

w/o enclosures 8403070143 840303 PDRADOCK05000g50 0

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pressure changee. say nuclear. safety crit.

,.gg o,3,.urro sv htutrwt ics, cracking steel walls or weld joints

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trons (inset). In this pretsurlied-water re-setor, water is pumped through core and 1

tran:.fers heat to the steam generator.

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k Could cooling water crack h h a pwce or da u. 74,rc3 ult an cmercency could tau,e a mt uito.. n TuptuTO brillle reactor

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'# '"'wi m s insterid of iren atme one. Tlie cau -

l Walls? Ilcre are the facts rius kind et.u cadent....,.n h wdl injure ubrupt channes in n actos creum.

,nnny p.opic. destroy the plant, und and temperature -u conditmn rain ;

' --- ~~~~ probally de.stroy the nuclear indunury premurimi thecr:.d i hock By EDWARD EDLLSON r"rth it.-Ikmetnos I.. Ilasdekas, crask brittle ec-h. aliomr i a. -

ena, OfiAWit:L n f Lt> GENE Uf0t.ir20tJ The A's te FrsrA Tirnes, March.29

>:enry water to e. p.-

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The safet) en ginces 'e- "po o "t

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!!asdel.:ss, a teattor-Fafety e igmeer 1.h8[ tharge qui.kl) locused uttet.

47/.. r. e s u l.ich. aru r-u'in : Id e le hood with the !!utlear llegulatory Com. itkn tw. thermal t hni k

,.ut m.n. day won, durgrut a scennt:g-mission. rentinued his article to warn

. The N!(C cunauiniom r., i. eld.

ly rnino' malfunction at any ofu do:en that radiation is making the metal re-public mtxting 3r morr nau h ur plants uron"d the Unital. states, the 4ted reaci fl.nl actor vesst hs at wme nuclear plants

. Itep. Ed Eike3 of Mass..chu-brittie. As a result he wrote, water i.etts called a congicssional hearing hon 3c, the radiourits c rote b ruing to used to flood c ul cool reactor cores in Om tun...

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shock ioto wa me. m uted h (10 t Fe st and ir d l'horps is st - on NRC m ed rne t a l -amples 1 hi-ti ct And the kmd of di %te tr.at im N.

nique -f rad u ally chai.ging ru ' a l h

cr me quite tannhar m recent y ar3 temperat ur e - and rr,ca3urme how a

has predicp hly erape! Elect ncal much han;mt r (r. : e th m, Ed ca-utihtie-reactor manuf act ur< rs. and abc.r n wahuut breakow actu 'h i

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t he Nutlear 16 colator v ( omnumon t<

radi it non d n ict R.eit itio.

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sav that th. prt rumeAtber m al N mi to n'.da all mi ' O - briu

.irr, sh. k prohh m n. w"Il m hand and diated mc tal nr 't be ra d t.. a H A i

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t hat t he " pie ce-of gla% ~ (harge o ab er tt nipt ra t u r. be fo r e win i.(.

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,J.$35 surd Fritic. say that the nuclear peu-durnb

'l h o staf m th. tran-,

pie art talking through ' heir hats be temperatur. fum, breth to duu n.

r caus" there simpiv isn't enough mfor-a measure of rad, a i,n damage mat mn available to a.>c-s t he dang ( r Nuclear researchers aw an of nn t.

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of pressurized thermal Auck.

al embnttiemi r.t. had ea rhe r expos.4

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I\\e recently talked to experts on samples to intense rad'3tmn hut the both sides of the questmn At the mo-surge of reactor c onst ructrin hi;m.

3 ment there are no pat answerm But ninc n. tht 1460s fi und e nr nve r, ir. formation ubout the hazard of ther.

e ithout enough r habh cata l o an.

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mal shock is accumulating steaddy Here is wharyou need to know

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6 Pressunted thermal shock has been I

widely pubhcized only recently But l$ Copper was used to III inklmgs of a problem emerged m the prevent rust. Someone 1 %0s.

At one puer-plant reactor, a work.

probably gOt a prize er peered into a video momtor und IOr the suggestion 55 mampulated a rnbotic crm down into the radioactive water of a 40-foot-4 high reactor vessel He slowly fished out a smull basket hanging near the swer questwns about long "rm radia.

m a en ine thick metal wall of the reactor. Inside tion efTects on metal, baskets of Char-the basket was ajumble of pencil-size py samples had been pootmned m steel bars, each alloved with various early reactors hg metals and each bear ng a V-shaped Tiie prmcipal cause of embnttle-I notch nent was know n to bi neutr"ns. tiu Wit %ir----- _

o At a nearby test area. he carefully atomic particles emitted by nuclear I

J unloaded he, irradiated catch behmd fissmn in the reactor cot e. colhdme D y DireCl at Wuelded-glass w mdow n 1) eft maneu.

with metal in the react or "it > h k e I

t f actTy Wholesale Prices with anoth"r robotic aim pow bdhards." says om i xport Althwh 1

l tione d each steel oar undei a wedge-metal atoms an much heavier than

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  • lam Jungle Bool shaped hammer Then, as samples nt utrons, w hen a hich.cnergy ne +

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were cooled or h(ated he pashed a tron collides with a metal atom, th.

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I utton, and the hammer 31ammed neutron forces the atom fn m its 1, l

into the notches t ce-the geometne array of atons This routme Charny test inamed The Charpy tests of ti.e 19m r' i

n.,,, m.

,n, 7o for its developer) yictded expected re-vealed that just a httle copper m a a

3D sults At lower temperatures, where steel alloy hastens emhn t tic men t

'D metals become brittle, samples broke Smcc that time, though. re-earchi r,

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easily thgher ti mperatures--hkt have been uncertain whv the prn o

tho e m your kitchen oven-made the ence of copper hastens radiati a. d im-j steel more ductile Heated steel sam-age. Theodore U. Marstun. w ho w e* k,

ples ah4erbed more hammer encrgy on thermal shock at the Electnc Po.s.

before snapping er itesearch lontitute m P..lo Alto But something unexpected occurrcd Calif., says therei now stronc es o when the worker slammed his test dence that neutren bombarde rt t

i hammer onto bars alloyed with tiny makes the copper clump together c

amounts of copper. The steel-even

" Copper starts out in a sohd a,

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$19.95 Our Price warmed broke easdy He raised the atoms fairly evenly distributed Un.

s t t mperature Still the brittle hars der radiation the stems tend to come snapped. Finaliy at about 300 degrees together as copper partic'es," be +nd I

n.. im m m..

F, the bars became ductde instead of New instruments that k escanhers r

hnt tle. The presence of eopper seemed see atoms withm metal

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to be producing stran;e results Soon clumping efTect. Marston si.

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workers at other power and research As the first discovenes of bru t!" ir

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Timberwolf reas tors discovered the same unex-radiated steel contaimng corp r he-I i

j i no i p o en m pected embnttlemes t came know n. anxiet y Iga:. to aprcad R

+.e....secas what puzgg,d e.ryone as the lion much copper wac in the steci al ti j,

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10ionb shon d U,at there s.,

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e gph med Mar-ton "When s ou mt U it s on can't gi t oli t h" w irie,' cat '

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liut wi id-in I w a!!s were the l

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a hr. d w hat wa, n y p< ning w huh ;

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h ww. about In qMs of coppe r-ci ut-

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, d w rido.g w ire w < rt routincl3 used l

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far ih. st w e M., " i ht rop; er was used m

i to prevent rustJ not, d St(phen H i

Hana:a r dutctor ef saft ty technolo-4 p at th( NRC. bornenne probably pt a $ 10 pr ne for the suggestion '

l 1;eactoi huildt rs switcht d to nickel.

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co.m d clerirodes but they could.it h

r, plac e t he welds in older reactors 7

W he o ! s e ited Marston last winter.

the tagininance of those welds be-tan.e ch ar On hn 'h sk was a slab of roetal that looked hke a paperweigh.

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gone w ild I thought it was eight g

mehes wide. But it was rec tly eight

  1. s m m inches thick--the thickr.ess ei a reac-tur.vewel wall. 'I he weid w a., a yel-g luw e.h st ripe in the Met i, tapering revolutionary gg legs Used tn i.1

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from three inche= thick on one side to Balans* Char off ces and b '

two im hes on the other Marston told ehnunates the worldwide Ei a..

me that it un take three weeks of re.

cramped. hunched-up executives. chJd2u. ic d.

Icated pa"cb with electrodes to com-smmg postum that i

popard wornen 6 fd k a pu te one of thowe welds.l' hat type of catxts so many back and muscle com-Conr;t. ac1wn is egaaDy ren at W plamis You'll expenence extraosdinary 32 layers of larrunated beech.W _

9 wel.L engineered u. he a p w erful conJort and a r.ew sense cf freedom the bent thsouah a sucal elm ror

.J h, t u -en h o,a +' et 'iora < f n.on.ont yvi e dowri procen resul'mq in a strcr ; i, t i

1 i h. u a.i.o r d < n.u, b ( op.

Dev hpx11:7 a mun of designers pacnyi but Lahrweyht base wa i, i i g.r to im ome a p W nttai hazard doctors and physical the; ape;ta it aBows enough "mve Ftr shed beau'.f.g !

"" '"j your body to relax m a pcr;tt:on of nattual hand and coven'd with 1% w.

l balance, wnh a nurural use of muscles. (chooue bro.ve or Bey.. i The es:

M interi t in rt.o tor '.( s-i ! emhr it t le j ample ";orn for the inner organs better shape prov > na a tit hi uti d up in !9 e. Mat ston re-e tle ock a r; n

' cuculat:on and i tme daphragm for w ben desuee Wuchs 8 b 2a b o cans 'Ihere w as t rou Ne oth the I cas2er breatjuno The chau needs no back places you a: not mal duk levt i ar.1 A

sample holdt rs in a revetor hudt by I rest bc<:ause it places your back m a posi-shdes conw.n:ently tmder yom &ck

'I Habcock and Wdcex. onn of the n.a; :r j tion of nanual support Your spme auto-year wa anty A.r embles i n m.-

e..

r.upphers. 1ie sa)3 W'ru tio n kep.

mat.cally stra.ghtent, yciur muscles reL(x, 8 screws ucolincluded) Oce see L:

knid mg them hose All the samples yetu breathmq becomes deep and full everyor c EnF the ccm nd fe 1 w(ie taken out. and it looked worse The first httelugent chair.

of Balans with he securny: o..

f our 1 1.

Coraentional chairs trnd the body at hame %al you rnoney [ rurq m o

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than we thought " Marston smd. mde a 90 an@ compresang stomacn and fumed it ncs ansr,ed CMi rc e O t.

6 catmg that e mbrittlcment u m pre dscs m the bwer back but Ralans he ps re ala orbt y approci tr b i grermy fasti r than t xpected u. t;n.

icirve dceomfort m the bac'v. neci. h.p fortab;e teat:rg 2

test samples Added to this contmued emnbrmu.

ORDER TOLL FREE.

tion of embrtttled.nu tal *amplei an.1 coppt r contannnation of ve dels was l Nr qwckw dolivery cmL' ca2 J.

  1. n eu nt the followir g ve..r that for tome, n.crea..ed the. hirm g

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} ruay c,au om M M h a k

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  • WA NM9 for the Balans Chac f1 Brown ot moe upholstervi 0: <

1 On March 20,19M. a worker at the i check toi 31% pias !r 50 doe:y ( A f(ancho Seco nuclear ge'ieratmg plant Lfk.!

residents add 6% sales te l

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3 near sacramento, enbr. aroppea a j-bght hulb into an instrument panel 800 344 4444 I

,. g.y ma a t g l

Tio p..nel shoned not and t'.e ph.nti l

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p en innents w er.t hay wire fla hmg l l

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a mm# o, ow c.mi,a

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g itani ho N t oN e mer p nn co 8ing in k

tem kit ked mto ope r. t um Cold water

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f.' "M ' fi n ELTRie 1-a (4 ld trer ter est (J;ong al itseed:ne p W ~

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fim sh ri n '.the rtmter. dirtpaq the unusual in tne u*cl wall a ('atk.

nu otcot d (dt. 'I hti Ma I teinp a u: b to T e2 derro. - 1o an it.clusion of ddlerent m itermi in a pai.abih r. r ia ar -.

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=.~..' a 1.!!k mo:e than an hour.

in the metal. an um venne : In the i

Pice uh inside th? reactor Setiel burfact Juu v+tunatt toe hidd.ond a :

event that nothues e tran o n' br-t dropped from the normal 2.200 Ultrasound mepection is conglicat-estimate the imelihood : : to r.

I p<.unds per quare inch to under 1.No ed somewhat hv the tatt that remtoi to that svent, ti.e n.uti 4. N ih l

p.i 'lN i, a, high-pressure water vesMs have a inch-thick clad-action. und so on down the hn -

g imps were trirgered, the presure ding-a permanentiv bonded ia3er-of We3tinghou-e. Im eum;de h l

ft j

4 wJr,t hat k over 2.000 psi. With no te-atamless steel on the inside surf ace computt r analysi that *:.o a a r

liabh antrumentation to ruide th, m.

that can produce false echo pat: erns.

pouihle initiator,. and run-n

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tontrol.noom technicinns kept the Hot thati not un insunerable prob-event tice3 to more it..n 5. ' o i

told water tiowing, maintaining the lern. Scro says hen impressed by the points. The NitC he don the j

u.a.bination of unexpected,y la tem.

sensitivity of the equipment.

thing.11.4 numbers con.e out um.

g cratute am! high pressure for sever.

"We've done about a h.df-doien full-less in agreement abua: Ihe u 4..

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i athours vesselinspectmns," Sero said. "You do thermal shotk. But there are mer,'

i The Itancho Seco

  • transient,"as nu-pick up w hat we call ' indications'- as ble diDerences of o;.mion ab-it t.

t ' car (numeerx call it. made it clear many a< 20 in seme ver els. When you value of those calculation-cL l

m?

.ci r ari ure pid, up any anomalies at aH. you show that although the re r im o.o l

epmm to abrupt changes in tem-musi look at your pre service inspec-und prescut danger, correci,e a t. n 4

s rature and pre.s>ure. Could any tsun to see if they existed before and should he taken at some react. r, t-pn eurized reactors already have what size they were.

reduce the hazard of thermal m." i.

l i, mall crack >? And could vessel walls "We've found that the equipment Not everyone agrees with the cah u containing such cracks, subjected to sudden changes of temperature and can pick up things like layers in the lations. "The NitC rr.ay con :oP n~

pr.wu r e during an accident, then Ouija board and come up wit h a 1..h j

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rupture, draining the coolant water ber,"suid hobert l'ollard of the l

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and producmg a catastrophic m It-GGThe NRC may consult ror band + on it are so large tiu a 1

of Concerned Scientista. "but the i:

d..w n of the core?

Ihe truth a that nobody knows for itS Ouija board and

'"at i"H " 'h'SS' Y

4 urtam. C3kulations indicate that get a number, but the That s not exactly so, saw.. e...

1 m.derpreuurized thermabshock an-error bands are SO ton of oak niage. "It'a po-sd le tu i

ditions, a reactor vessel will fail culy mate what the uncertainty in th if cracks of a certam dimension are large, it'S useless 5) un lysis is, and pu have to live..

q pre:s.nt on the inside wall. Inspec-that uncertamtv," he sa',d "But

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tions throughout the industry have take the conservative end t.f i:

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.i e work with that."

u ed ultrasound and other nonde-cladding," Sero continued. "When A lack of data is more or le-o n p

structise testing mtthods and thus we've gone to the inspection reports, ceded all through the NRC n p t 5

far h.nc found no such cracks. Indus-we've fcund that there are layers in "l'erhaps the most significant un.. :

h try resonentative', say they are rea-the chdding at the same depth of the tainty in the treatment n that sonally conhdent that no ciacks are indication. Our conclusion is that in there nre known low-fr qcene3 is n f

th( e. Critics say th. inspection all the inspections we've dane, we tial over-cooling eveno much r..on equi; ment isn't good enough to detut haven't found any indications that we severe than those 1 hat hau i

the crac k3 The NRC says its analyses can't nsolve as inclusionn of diGerent curred," the report sny at one sw u.

a'. ume that some cracks exist, no material or layert:."

"Because these event-have r.ot <

ruatter what in'pections show.

Sero says Westinghouse gained curred, they have not been takeo u.h r

Ilithard Cheverton of the Oak confidence in the inspection results account in the frequency d..t rita 1

Hidge National I.aboratory, whose when one test showed a gLuge on the tion "In other words, it's tough to pre.

j tram has performed many of the ther-outside wall of a reactor vessel. "We dict the possibility of e methin : tha:

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I mal. shock analpes, says assump-were able to get pictures of the reactor has never happened. In anothe r uc

.l tiuns about weaknesses in nuelcar veuel that were taken before it wa=

tion, the report notes "suh3 tar.tial un.

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power plants had to be made. Take installedT he said. "We found that it certainties" in some estimate er d 1

the critical iouc of cracks in the reac-was a gouge that existed before it calculations that are uncertum b;.

1 tor vessel waUs. "It's difficult to look went to the plant." A sample of a ves-

"plus or mthus at lea.st two ordi r., of for flaws after the reactor is N opera-sel wall containing a crack is used to magnitude, a broad hand of unca r-tion, and it's still a questis... of how calibrate instruments.

tainty, indeed."

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good a job one can do " Cheverton The NRC recently released a de-What else can we do? the NRe p +

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said "It's not clear yet whether some toiled study on pressurized thermal pie ask. "It isn't well dehr.ed, but it c of the thallow flaw

  • inat can get us shock and reactor rmfety. lf you really the best information we have," s.u.'

t into trouble can oc found with eteura-

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  • o w" trm! to ar.ume that the want a good fight, a:.k people about the NHC's lianmu r.

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Ilaws v.iH be there!

the reliability of those safety esti.

Your be>t is none too good, the ci n mates. The method the NRC and the ics say. They point out that the prol.-

'g lhat Hichard J. Scro, who heads a industry uses is called probabilistic abilistic risk assessment technique.-

program on inermal shock for Wes-risk asseument. It's designed to get the same one used in the :amous Has.

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tinghou.se ta major plant builderi, around a rather impressise lack of mussen report of IM4. in w huh,

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i I in.untains that there is growing evi-cuncrete esidence. All the calcula-team headed by Mll' profe>sor Net.

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dent" to support the belief that the tions about pressurized thermal man Ha3mussen calcubited the ri. !-

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cratks aren't there. Engineers often G

shock, for exampic, are bawd on just of nuclear mcidents. Hasmussen cam.

inspect working-reat tor vmels with eight etenis that have occurred at nu-5 ultrasound riuipment, w hose echoes clear plants, including the Ran(ho up with some comfortingly I euri.k analyrid tu detect anything Seco transient and the most famous tirures. Just last year, though. the are C.nu m.ol i

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Re metal the anesant of te iiat um <'

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~lh k o..e d

.f i re-n,

  • u m e, p r e-e xist in g crmt-e c; %i R dang.r mdazt: < s p< :

l b - m ' a.. pag ( s o r i fimd, n.wbt ext -

u.tothe s c 4s I n.

()ne ca sti; r t - re-i. W ds i

i'e-l b i t ue r '.at e't 'l ak nc A1 r. -

1 te rt-tui t4_ ra'<

t u. ' ('uunit i t.

t h.

ria:t r r o

J a sr.ch lon, 3atet3 as eribrittican i.. a.oricus pland tht putting old, f uel cienn n-sim h i

'h. Indian Pomt r. w tor NIO ' t'redere i w hen some of therr errut few e: ni ut r ons. < i s t.

4 ve-

{

i. x t i t *. H n. uer piant-wih rt ach a <...cer point. All tha.p al wah "It - nu, and t he ip to r. dm.

at cart %aakes and fbb consid. '.-u t he Nir report reached a m utror, uus m a factor of tw

.o i

da d II u.a,

!I H the t. p of tho h t of ri A re awrd !

mfemu conclue h bno L.- le o n"d to :ncludu 'n L h-dwi.

,urt.i-ter rea; t. r aa-( lli i

a n k a, c%ments. Ilanauei m whn.

p.

u: acJ thermal hach tuoi ch nn.s ; r. t e n u n. 'i in :. w.

I 1 w as an t-uc ll no one does any-Amt rican utdities to reduce int w 3

hap -i. kas disme ses the report thing web re one reactm that's m expesure ever. furt he r by in dertmg

-]

' tia pantiOcation of wishful big tronhle. f our ot hers that are a ht-dummy fuel elements next to the ves

- iii w

inmkiry; " And George Sih, dm ctor of tle behmd it. and fou: that are :n a sel wall. 'l hat N heen done at two rest -

the imttt'ite of Fracture "d Sohd mild kind of t roubit.' flanauer iAd tora in West Germans and one lius MWnk

  • nt I chigh Unn er uts. ~ay s me " I'he r~ t eT t hen: will not retch son-built reactor m Fmlan i Iv i

t th, impreme report r bu:lt on utihties are reluctant to take tis r.

' ardat e.n of sand daction m generatmg (apany that

- d aarles they study are hve dummy fuel elements brmg

x. ana the vessel, are noo ISThough the inner Thek are many othtr ster' that

{

' %h said ' The sample 83 portion is brittle, the can b< taken. Erston said Ove n the j

in.1 the vesst l a right marvelously simple measure f heat t-y< don.t know how to outer portion is tough'-

mg the emergency cooling water to re-2

n. '14 ample data to the de-radiation damage.in the duce thermal shock Keep ng the 5

n '-

ve-scale structural compo-wall is attenuated 55 emercency "ater 'ornis at 120 de.

I a ahng eflect in size and grees F rather than room tempera-

i Img efTect in timt are ture is che..p and effectne. Marst m 9

o 4 % ult quedions we say: Thermal shock can alm he re 2

the ser een a critermn Ithe transition duced by whhng controls to thr-tth thmk the NIW has h< c u ten'peraturei durmg the anticipated back t he aut oma'ic-fei dwater sy stere.

-=

l

.a ive. industry beheves the hfe of the piant '

he notu

,i

< on, rvatne You c.m ar-The ' hig t ri de" ge nerat n.g I ant impraved trummg for reactor over l

Sout any contlu oon you is the !! H llohmson 2 reactor of Car-alors is another indu<try option The put t mg m t ht a ppropr u t e ohno I, w er and I.ight llanauer cal-idea is to get tla m ready for ull thi s

W r*t u. avs "Ib chanring culated that d mthmg were done. it problems that could lead to a ugnib 2

mi c e he expbuned. 7 would reath the transiuon-temperaJ ' ca nt transient. th(n avoid the x.

.h. one of these thngs has ture criterion m September of 1967 quences that cod in serious trouble j

7 3

H hh m all or n ofet.nu.T 30 Turkes l'omt 3 and 4 in Florida get The last resort is annealing The re-d i' si s' The NitC consistently ther( in 1 % n. Calv(rt ChfTs 1 in actor would be ehut down, all the fuel 5

Mar 3 and gets there in 1989. and Fort elements would i e remo.ed, and the 7

7

.i.

me-t u.nservative numbers 1

mate-he says Calhoun in Nebraska arrives m 1990.

vessel weuld be heated to 850 degrees H

iFa i! the ka factors that the l{am ho Seco. Maine Yankee. Oconee F for a week A studv done hv L

[

M

. m rts lo. ked at was the tran-2 in South Carolina, and Three Mile tiaghouse for the Electric Power Re-d

~

i a. tt mperature nt w hich a piece of Island I arrive m the 1990r Every-search Institute concluded that an-s u-

, bomg dactile and becomu thme che is 21st century, llanauer nealing would make the vessel w ab nt..n.

ugh to bri aL easdv A cru savs ymmg agam The process isn't chen;i j

iid;i.

. be N W ' report w as tn a t Reu tor ru a n u fad urer s accepted One report cited costs of $60 milhon 3

t v hu b t M t r:m ito.n tem-t hose n and.c. - without too much ar-or more for a single reactor. imimhne L

m <. gn en te n mr wouhl be gument. "i heir umcludons are more the pr:ce of the electricity that the l

w e ontern The report set 4 the or less m hac w ith ours." said Sero of plant did not generate dur:ng the pm nt..t 300 degrees F for ver-West mghou,o Scro says that Wes-treatm< nt j_

!a t

a f

e Lis. So degrees for homon-tmghoua thmks the NRC could set No one is thmkmg about anneahnc its t ra nsit mna empera tu re numbers right now. Instead, utihtie3 ano n in-

}l

' - i ana dion ternperatures are about 30 degn es lower, but he isn't ufacturers are makmg detailed stud-i in d at t m so temperat ures report mal-shoc k issue fr : mdividual plant-

]

t he f eactt.r ve-el must atguing w ith tbc ha,1c premises of the as of all the fac tor affecting t hc ther.

i

-ui

(

{

i a ts o! b: ttle nwtal are to be Nuclear cr: tics are Thay center The NRC rtport has asked for such a j

! 'l he i r ivmal *tandar d f or nu-their fire on the vast numb. : of as-l ia nt-spcific re port at leaq three g-ri i ' ors wns no n e t F a n 200 sumptions tnat had to be made in the years before a rea n or r(aches it s j

I 11 e o mrer..ture n. nigher report because inf ormauon abe rt the screening cr itt ii n for dann i 3

I

tu.I wi his be m u se pre = sum probabihty of diflerent event., occur-F or the Robinsor 2 reactor, the re-j p

'o N

M. eut mer**-

rmg and ubout the reliabihty of ssfety port would b2 due m 1984 Carchna E

.i sack svatems simply isn t evailable Rep Power and Light is hard at work says h.t 3 t hat a l

F.

i

am i

-: 1 tleman who a m charr,-

the radiation dimage is attenuated

,.a.

. :... h a ? de:y. Inc vedac' wall ha through th( wall," Cheverton said "A of unk mwn dantus that lay bt.or:

l 1

thun.

t, oq rted, and no crach were crack might be driven through the in-

"The Atomi: 1.nergy Commasion

.. Y training for reactor per-ner part, but it terds to arrev. nt the c-t. ls r n a.v. t he con ia:a p outcr partf wt ut forward with all tho unduo opti-mism," comphan. ti l'ollard. who re-

,,. c, r.p al f.. he a ti e mer-llut that ase% ment could easil3 he sigm d from his job m. a regulator

'.'s

,.y pp t v.

wnug..au l'olhird of the Union of

,;. -ure ha* been reduced Concerned.%entists. "There's no du-yeara ago in ih gu-t. "I'ow we're in a v

position where nothing can be done to tu obl.'r ha 1 t b'raents pute that current emergency systems 3

n :+r w ali. Ilm mu b wou d not he able to cope with a frac-correct the mistakes without cau.,ing 4

someone undue harm. I expected a i:i the p' eram t n.0 "It 8 ture of thc reactor vewel," he said. them to do thejob back in the ISGOs.

I m

i

+. 1pien:

t e c14 ut ihat."

"l'or other problema. you can make n Now everyone but the nuclear indus-

.. i i seconal.le urgmnent that you have try hus to sufar."

f e.. i...nu at th NItc, the some defense in depth. The difense.

"My perception is that the problem

u. r. or the taihties The in-di.pth philocuphy disappears when is well in hand," said Westinghouse's

.w!! um:ersmoJ, Chever. you talk about pressurized thermal sod the Oak Ihdge analysis shockf Sero. "We have significant research programs under way, we are putting a that even it worse cari.. to The real problem, Pollard says, is significant meney and engineering ef-ai.

ti actor venel would not that the nation's nuclear regulators w-a i a.,k

,n n. "Even though the and the manufacturers allowed a ma-forts into it, snd we have a firm un.

derstanding that is going to improve,

n. n i brittle, the outer por-.ior construction program to roar n n, ; e t..

ietatnily touch herau.e ahea.1 without copsidering the range which will show that our predictions were very conservative."

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