ML19268B928

Forwards Evaluation of Proposed Factory Tests of Reactor Bldg Fan Assemblies.Rept Incomplete & Requires Amplification Re Relationship of Test Environment to Accident Conditions & Level of Acceptability for Each Tests

ML19268B928
Person / Time
Site:	Crane
Issue date:	08/04/1969
From:	Pollard R US ATOMIC ENERGY COMMISSION (AEC)
To:	Moore V US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 7910170805
Download: ML19268B928 (7)

Text

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NN.= 4 (: s q '. ,s s - ,9 - 1. .V [ ~ August 4, 105's II' TIV1.':'.! 07 P.AC"0R BUILDI!'O TM1 ACtl.7 E3 .. ~ i i y f[.j YACTOP.Y TUCTS TOA TDT.EE }!ILE ISLAUD U:l:7 1 b k j = The proliminary repert covering tests of the ree.ctor buildin;,; 4! = a { fan esoceblien for T!!I Unit 1 vse filed ca 27 May 1959. This re prt censista of threo sections which describe the propcse d Lei,ts of the. _i emergency coaling coil, the fan assor.bly housins reliuC valves cad i l the fan motors. 'l ai '{ I. Emstgency Cool.in; Coil Perforn n=e Tcut 'L j J This test is to provide assurance that the emerscncy cooling coil it capablo of the desi;;n hest renoval tr.tc E i under accident conditions. It is deubtful thct a steam / air mixture duplicates the. cceident envirer.i cat, enrecially .x ~ if containnent spray is cetuated. I

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Relief Valve Test 'i './ i i Ihis test considers only tha of.t peb'., re:* t point, a::d est:c!cy of o.w relic

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] that a rufficient number of velves will he inntr. led, in l I the corrcet loc.ities, to preve: t a locall ..'d rupu:r. of 1 the hcu:ing and a result.nt reduction in oir f t: rhtev S iii i tha coulinr; c oi l.:. i I III. Wate r Coole.! it :cr Tests 1 ~_a e 7mmummumur

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Ruview 2 Aur,uct 4, 1939 ' i,R- .,~. .4 .3 A. !!ator Ratingc b

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1. The volte;,o rating to vcriously specified en ,.l,y. . s,. 460 v and 440 v. Operation at T.;I uilt be ~ from a 480 v bus. 2. The unit ratings in the report end/or the PS/,R cro: .f. .94; ll. P. Voltage Current Speed Air Flow 'N. , 'J?. (volts) (amps) (rpm) (cfm) Horcial 150 460 181 1200 100,000 Emer:ency 75 460 120 600 54,000 f- .>p Uhen the fact that accident conditiens are 70 psia and 1007. R.ll in considered, it is doubtful that "i all of the abovo fidures are correct. 'z D. Motor Insulation p !, N4C0 = g-The Joy thnufacturing Co:rpeny's bill of ratorial N, specifies the cotor in:ulatica as " Class !!, Fcr flucicar Applications." The l'X L test report, includ:d in the test cur:.r.sry, documents the suitet,111ty of thic class of insulatten previded it is ret u9ad in a scale.d container becauto of ca: cvolutten under radi.:tica. The bill of estorini furtbe.r staten that the it.otor is " totally enclered urter ceoled" and that the centa b,r.c.. p% 4I II I EIE

.g p.v. 1 g. ')$h. kovieu 3 August 4, 1960 r . tQ*. .i '[ g atmorphere cannot contcet the votor inturnals. W rc- . f',c{ i9 fore, either tho insulstien's suitability is not g; dk verified by the KAPL tests and r.ust be re-evaluated 4 2' j or the attiosphere cc.n contact the reotor intervals .d4 and this must be censidered. wr 8l q;_- C. Shaft Seal Test .h p The ector is equipped with a preesurir.ed voter .e f shaft seal end osch of the tests cpparently assu.nes no leakage of this scal. 7e is qtest3 enable th'st ' ~.Y .6 this is a valid assueption. One unft is norms 11y "a shut down and may not be continuously supplied uith k .h seal water. In addition, the loco of cicetrical power

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and coal water prcosure coincident with on accident 'C9 atner.pheric condition is a distinct possibility. . - 8.e D. Motor CoolinC S5 a _C; The r.2thod of cooling tha r.oter i: not clearly explained. 'Ihe bill of caterial describn u.;tet circulation between the stator shells i: plying a retsi

n to vator heat transfer. The general daccriptica cf

[g .c the G.E. custem 8000 otster t:ntienn caly tl.? c i cu l..- tien of cool sir. I t. cir coolinr. opplienbic to thIr. t.- particular cetor ? !!ator coolit:c, u:ter flo1, tenrir.iturc. j .3 .o.

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and pressure are not eptciliod. E. Proposed Tsnt Outlins ) 1. 'Ihe motor vill be subjected to a he :.a;;f n;; test at 130 C for at le:st 100 hours. 1:o justifiention for this torperature or test duration is provided. l!cv tiuch credit in bein3 taken for this acine,7 t! hat is the reason for the test folicuin::, re.ther than precedin3, tha vibration test? 1. The vibration test includes only the esotor, and, presu:sably, the m:ter cooler. t!o proviaica is cade for evaluating the entire fan esser.bly's ability to withstand denic.n soiemic cc.ditiew. 3. The insutstion end dielectric testa are to be perforrad after ecch teet scetic.-

o require-ment in sp:cified an to bou coon after esrh tent ther.o electrie:1 tor ts cre to Ic-1 e r f er e. : d.

4. The purpo:n* of the inclucien of the fanir:ter perf or:.:nco tests at v:ri au i blade sn31: :;d n2 nurer. ut of f an/neter cound pr 'r 10 '21 is not stated. If the.*e t e::.: preeido tr.y.:rcer.:en that the unit is ruital,1. for this partfeit1.. applicacitn, it hheuld b2 no scared.

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^ .. ;. l 9 q .f. < _a .;: 3 accidant condittens pro %hly vill not duplic..ta j the actual condittoos with respoet to thruet d ~ y Icad on the bearings, notoi Icadint,, and caustic ^ l spray. It is doubtful that frietton heatir.",.of p; a F 3 :, g~'i-the air by the fan will r.aintain the test tapera-Ji1 s - : 1 ) ture of 300'F, at the design air flev, during i water spray. It app <ars likely that etcam rather ^ a l + ,.. l than water spray will be roc.uired to raint:in the , ;I ; 3 1 test eenditions. a; .; q 4 ,,, g 1 -l l j { Ej IV. P.ecom ondationn e 7\\- \\ - A. The basis for choosing each of the test pararieters should i j t j.: } ' .c 1 ~ . i be specified. l 4 b wpq I" ,i n. The niininurs lovels of acceptance for all of the test results a2 ; !I should be specified. j! C. Consider.' tion should be r,1 van to the fact that tha insulatten

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