ML19242B335

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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)
v • d • e


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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

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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.

7908080 r

. v a,

,3 t

  • 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 S4 ve rcl A F2' scler.cid valves pr eviousl y idert i fies as net a t t ac ',ne n t.

as soor. as reseitle.

d qualified have been re;1acc? or will be replace Th es e valv e r. vt r e locatef ir the PC5 sar;11rt cyr tet (or letter, serial 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:

55'

_..... _J... _.

e North Anna Power Station Unit No. 1

~

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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for du at tom of steam dasetarge = 33 miautes.

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Ln e e -= alit.nette Coepanys outside crane went expo ed tos

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1. Eigh ambient temperature 211er for d ur a tion of steen discharge in wic Lait y et cratier room air 1.etaLa s = 30 minut es.
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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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l 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 600 V CN. Power Cable Test = Sequent 1A1 Otzrtite's ragireerirg Report

@wite Lost-of Toglyit Accioee d Q1 ggg-of<.wy h t_fgripert (LQCR bo. 141 datz,2 2/21/72 W29 1/u 210 MO1 200*F G to 30 Mi a Aged 168 hr i 121*C 7 ?it t loa a l Nwrt i r s M. e-tJ P

BCA-21 1/e 2/9 Ab0 Deduce f rom 29 0*r Irva114te1 to 2 r 14e rads Outlire of Frank 11a Instituta IC D-15 Tr iple s e s AW to 150*r 30 to 60 MLn Basearch Laimaratory Ie'gets P*C3hSt 305-14 TTiples 96 A 4 1SC'F 163 kla MJ rpo m_qe DE.B

  • 17 3/c 4 0 AM tS paig 0 to it Pio se gsig e 32e*F For 4 hr 3L5-10 3/c 913 A4 Batuce free 65 33 to 60 Mia 16 psig & 2S2*F for 7 days 12.E7 Transactica Paper T 74 Cat e 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.)

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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 O

I.Ja.,ratory Peport T-C2457 EA-15 Tripleu 250 MCM 283*F 0 to 30 Mia Irtadiated to 2 s 10* rads Cerro e suylesd at to F.I.R.L.

s KA - 17 TTiples #2/9 AwG 9 J.m f rcum 3 8 3*F 10 patg and 276*F 12 hr as;4-3 3 6/o 2-el and e-813 to 150*r 30 to 63 Mia KA-4 8 7/e e 12 14 153*F

>60 Min Sprays Last 2 he of 12 hr geriod witA a Franklin In

%,, tog.y,st.

ite Pesearch is; D-34 e/o 816 AkG e5 reig 0 to 20 Min s alution of bor ated wat er cretaantni

,. cr-F-C2753 sCS-37 3/s e8 AMG Re Ace from 45 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 un.sr cLited tar e with spr ay cantimaing Sprays 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 F -C 750 1.ndicates that in an earlier a pe of 0.5 to 11 with haute 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 same se =oseertation of Accideas II3*F 3 to 60 Mia Environment
  • t'. mears-165*F

>60 Min Twsperature - Analyste FSAn Section 3C tnd respocse to 8 f a ig

)60 Mia Maxism calculated surf ace tearpera=

40 peig e tm 4 0 M1.a swevireep Costner.t 7.17 g.r ed 3 a 13' rad.a ture during 11 mating r.5IJB is 335*F pockbasto's lettir dated 4/25/77 whici, does not exceed qualification

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

  • 1th Em io. In N 11fied PJ "" T of N41tfientice M411ficatirm We*,t P.O. hA-261/1261 Ilv'A Liv a.4 La c ed to 1 a 10
  • r ed e M " 8* w M 3.I.W. Lettera datet saa v laauwas camle as: r o to 30 ala arr Cfootsn 1: hleted h arg and cable)

Se!uee frems 230*F 283*r at eS peig 4 3 m2.n i 7 2 12*1**71 to 130*F 19 to 60 ala 205*r at 0 peng 24 has

$,$$* 4 0 e/o to. 16 AbeC tt0*r he mLa Aprays throug hout 25 tur $*riod icA-ss es/e a..

36 AwG es p.t, e to 32 ata DCA*6) 19/e pea. 16 A>G Ravtuce from 45 Seleties of 0.20 solar boron as borte Sta.4 e 12/o neo. 16 Ah3 to O psig 30 to 6 0 sta a-14 with t}.e EE adfusted to 8-8.5 wit.h DC.A-4 9 2/u me. 16 Amc e peig 360 als a 0.019 autar solut.non of ha04 tr.a-7 3 IS/e ens. 16 AarG 7.2 a 10 ' g oda 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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Min f* eam Ling _2 tut L*3L31 g

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

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393*r 2 to 40 als 3.avisonneste MS12 is )#3*F y Leh doc a 3.I.W. letter da ted 10-12-76

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m g. Sepeatial Ch mite *a En;1neertng Peport 6CO w Alminus Faneer Cable 0= w i te 200*P 0 to 33 min Aged 16e hr at 131*C No. 141 dat ed Fe bruary 29, 1972 Beface from 200*F Irradiated to 2 a 108 rade p.+1gjen,1 g ra-c r e t e* W :* eats IC1-S Triples 300 por to 150*F 30 to 60 mia 4

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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 IEz2 Transaction Paper T 74 {tt E e pelg 360 min with taaOB to a pu sf 9 0. 5 tr.z ouq Mut the 1.2 a 10' ra&a pwn eryosure pertoo.

Sprayr hillag 18ater peactor Esposures 0 -4 hr Solution of bor te aciJ A series of t rans teet cycles each (2,000-2,100 gym borord conaastang of a rise to e specaried

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e 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 -

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

  • oualification of r:eco controls is3*r 360 ta se0*r e to 3 hre Mechanical Egtng itmit awatch Mo<*e cc lois as ret, e to 30 sta aosuce from 3ec*r s tata rd s 3 = = (*153LA-10 0 to.3 Illi saliation tiposure cr loss. 3, r 323 ( 2 seduce from as satsarc rescue Cr 1014 5, C to 320*r 3to s hre seca Test and 3:2 e72ja to e peng 30 to 6 0 min E.

1309 SEQUTMCI DIFEATED da t % 3-3-7s and rewteed e-7 7s 0 peig 160 mia 250*F DC 130s 7.2 m 10 ' s aSe to 3.5 days RA 10:C 200*F 3.S to 33 days vc 1009 70 pst 0 to I hre Sprays

$5 100A 13 pol 8 hse to 30 daye 0-e t.s e selwt ton of borto ocid SS 13 tA (2000-2103 ppe baroni buffered Radiation Erfoeure 2.0e a 108 rede EJ 102A a pa of 8.S to 11 with M.ON ES 13ek SS 106A

> hse elaLins solwthon with a Spray: Soric acid and water buffered to pt of 7 to 9 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 ESC Calculation 11712-1.5-197-4 430*r 0 to 2 min MaziJaum eurfsco te*perature is 285'r pe.

dated 3-Te-78 240*F 3 to 60 mLa ESG calculation 11712-ES-117-0 date3 141'F 160 min 3-16-74 and le well below qualificettom ao peig 0 to 43 min t em pe ra t uz e O peig D&G id.n 3a 13' rede RadiatAon Expoemre see IDCA Test.

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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 F ~r* * *.i m sa9 '

w.. r..e. > r e 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, se ?uc e f rene 30*P a16 sw.i t -.

P cAwca l aps e r * & ta elevet*1 awry fu.es stataca - s ec cre.d c.ii o.3J LL,.~

ressure w a

1. P t.r.. Claea a ammalauen, 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, a

eyete till ena of 7 a'

y t e,p r e duced t o San Jase. Calatcstaa sprays 0 to e ILr salu. 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 D.;jt e g nq -

P,.* or wa s t rTesed to an a pa of 7 ta 9.

e u t o d e r-t due of 2m to o rada et a dose s at e of *0.5 y 10* ra's/ r an,, r.

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

e4 aJ x: um,

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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

1. Pleal saf ety analyste Peport -

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

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,

M18 Sall' uJim as pet, 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 e p.t,

>60 min ti.As =voor, wie per f orwas tee t, r;o. see

.on ):

ream oe Lt:rs - re s t ae contain-r e pe r.n-rent recircu2nti n strar Pep 3m us e rada te e tita ta tre ranto m a u face 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 -

San Jose, Califortta f

e1F Joe 12, 1973 f&4.

(pges 36 to 6e) s

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