ML19221B333
| ML19221B333 | |
| Person / Time | |
|---|---|
| Issue date: | 02/28/1975 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-05.048, REGGD-5.048, NUDOCS 7907200058 | |
| Download: ML19221B333 (6) | |
Text
February 1975 U.S. NUCLEAR REGULATORY COMMISSION R EG C_K'O RY G U B JE REGULATORY GUIDE 5.48 DESIGN CONSIDERATIONS SYSTEMS FOR MEASURING THE MASS OF LIQUIDS A. INTRODUCTION makes possible more ascurate measurement of the solution bulk it al30 improves the case of actuenng Section 70.5S.
"F unda men tal Nuclear Matenal accurate bulk measurements and obtamina repre-
- Controls, of to CFR Pa rt 70. "Special Nudear sentative samples. The deternnnation of chemical and Matenalf requires tlut the quantity of special nuclear isotopic concentrations in samples by traditional nutenal (SNM) on mventory be known on the basis of analy tical techmques is independent of vessel design, and measurement at the begoning and end of each nuterial chemical and isotopic assay are not dncussed in this balanse mterval. Section /0.51 of 10 CFR Pan 70 guide.
requires tlu t all SNM added to and removed tiom piocessmg durmg that interval be measured. Section 1.
Hulk Measurement of Liquid N A aho requires that all rardom anJ systenutie errors Measurement of weight awooiated with such measurements be controlled so tlut a.
the hnut of error of nuterul unaccounted for (LEMUF) at the end of any nutetul balance interval does not Deternunation of solution bulk by weighing is exceed the amount specified in the regulation, advantageous because this makes it un necessary to measure the temperature and specific gravity of the r
i lus regalatory guide pertains to design considera.
sol u tion. chnunatmg random and systenutic errors tions for methods of measuring the nuss of itqmd iri reat in measuring temperature and spetitie grant >
contained m a sessel and identifies those design consider.
and amidmg the possibih t y of mistakes in nukmg ations wluch the NRC statf considers to be adequate for
- emperature corrections. Another advantage of deter-nuninu/me the error associatcJ with that measurement.
nuning solution bulk by w eich t is that there is no lipapment and procedmes for obtaining liquid sampl4s requirement for dimensional unifor nu t y witlun the are the sub.iect of another regulatory guide. which is vessel to achieve cahbration hncarity.
currently in preparation.
A hsadvantage of weighing is tlut ripd piping B. DISCUSSION connected to the sessel can produce mechanical stresses due to dellection and thermal expansion. These stiesses Measurement of the SNM content of a sessel can af fect the mdicated weight. Weighing systems et the ontauung a homo eneous liqmd solution consists of null-balante type, w hith restore the sessel to a reb ience s
s hqmd position, can WnHmi/e th0 el[eCt o f stress Caused by thlee principal operatioin: (l) n ie.h u r e illen t o h) Incasuring 1110 dellection t)! the Vessel with increlikny w eight. Ih)w eser, nlao (eit her b) welgiling direct l}
44 sid ume, tetilperat ule and speJitic UrJvlt) l' ( 2 ) (Th!J!ning such s)stenh do not ainlpeinate fi r Iliernui e\\ pan %um.
t a Ie[resentalise saniple t)I the sCssel contents. and (3)
W}lele dist *I6tleCts arc perlDi%lhle Jnd the nlllnber til away (){ lilC Namp!J lo deternline the SNM tonsentration amnes t i< tis a sin.ill enimph to make dnamnecti ari in Ierllli td unit w elellt tir unit stdulne easlbk. t! C sessCl Ina) be dhcormetted from ille Dipl.ig dunne a weight determination to ehnunate tiu 8 cf fet:
I hn guide de.d3 with measurement astiUtied thJt Otberu be, temperatures JIe hehl tonstant or an Jdtb are it te<ted by senel design. Proper attention to desien tional correction n included.
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k ell 4 s in u d br D 'n w elgll! nicasGleti en t can (N etir ll !!n thp tilbes, sig!lt glaw, LII a d!!ct ty pes (d le\\el serbiirs.
weIJht til Iluld iri the ia ket \\ aries. Ihn n mine bkeh to pmblem w hen steam iather than a loloal heat-g,e et pneumatie dip tubes are used in hid b; a turnter medon n used f or heanns it a hquid neat-g,o Ikla beare M hu umphcit\\ Ihe operune thed, !!!c prtiblem !na) be lew se\\ere g{
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!!Jn sler Inediufil is m a \\cul with inteinal toih than m a \\essel with an oth n m tim @ r vu abine the hquiJ. lhe pnwure extema! met-dinereme between 6 two tubo w hde m n m ed thronch the tubes at the same rate is proporttonal to the
%cielung a \\cs el contammg SMI m be done b) proJuct of the height of hquid abo v the opemne et the mimp the \\ewel on an mdustnal plattor m : ale or b\\
submerced tube anJ the dernity of the hquid. Ihn m
plasmg hy drauhc load selh under the \\enel suppor ts.
pr ew e ditterense is so me t i mes called the "w ei gh t Ind ust n il w eighbearn itilan cs and peildulum balance' t t J l or \\ewels hmne a umtern crow settion the k le a;t.ities of ten; ot thousands of kikrand al wei& Ma n dmm htd to A nw d Nmd Js i'n J u les ' 't (I. l ' l ndJr car e t ud) G ill t r od ed gq ggg g
,j (g a wns an accuug better than 01 can be as ll!J \\t d l4 JH 43 ke i\\ hndets t>I uf anlunl h e titl ut M ide ate r i (6'ineI\\ w el hed with Jn JWWac\\ of () Ol' b
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dip tubes, the ends of uluth ate submerced to d!!ferent Penduhlm balantes mdicate welght wnhout requume thi but know n depths. Ilow e\\er. the iesula are uuuMy len mam pa!a non ut sunJard weighs and thus art more schable f or uounthday pmposes than c.m he obtamed readdy adapted f or r e mot e reaJme anJ autonunc by inmunng the spetitic grmt> or a representatne p m 'out.
sample withdrawn for themical and isotopic analysis.
In d.6.t hal us int w eit'.hbea!n tir pend ulum balances in sundle unns. d W ed by the fu h u. quewed h n been largely knuted to a;mican~ s w here the lessel l*
nlan;tenJui Jnd aJ)'i ' F ellt. NlICre is asse al\\
and mstaUedf a p ur of purced dip tubes can measure radunen le\\en preJude su.h acsem dm s weidunetan had le\\cl wn a poxbton of 0+.
ot uU wak he aaomphshed by suppornne the \\essel on indrauhc A m u ucles of 0.1 to 02 tan be aslue\\cd in a 44 h) Jpp{)lnp L!eitilc reshtansC-Alte strain h tJd te!!s Jip s tti the \\ewel MippiMis.
3 sight g!an ea\\es a }hNtn; reading of lh[uid le\\cl.
t h Juu,oc load s elk h.ne a capacity of about m,WO but b suhlcCI to brea,Lige (wiuih could result in tht
.\\ n A s. 'I ra i\\ sd (Ll tan bt as h!c\\ed. ;.[lic hiad ;in e
spread of tontanunation I. Sensing of, quid le\\cl can be he u
J.i tht s u p pi ffs tan be eJM!) ilm?'ined and can be read done b) (It!ier rlledrh. sush as by dnHlieter'Iype floats (1 t
Jt Jfl\\
t'n\\enlent re nh 'te, ' J I!n..[.he r ea dMi/s aie
~
o n} t rastinic IanymJ.Ihe renu!Iant asCuraty is genef al!y Cnsltl\\e it) t e n li'e r al 'lrC. but s blant!al teluperJture imt adel[uate ILM Jedluntabdit) nlCasurCnlellIs. !MiwC\\er.
tiir !cs tli' i is pa i N b,.
a llie I c a4 bl!!!) id usmp hydrauh bud sC!h to In the design (d \\eweh II4 U d u me mea s ule me r. t.
ni.1, ale fl.: w elgh t ut prt)cen f eed was st udied Jt ils ll'C sy stentatic Croir Julhlated wlIh thL e\\htCnse td a
[
IJahit ( h; 'iuJJI Pro cull!
Pl.nt.
I5cs J tbe the irstaha-hqmd heel beh>w the h m est hmn of th0 mea sunny s
7 m 'n w as on an emimg \\cssel that was not adapted to deme san be a senous pioblem. llect unsertamt\\ n not
!!.t p.nptme, tIic tests were InviMisluM\\e. Ibtwe\\er, i n1{M 4 t a n t It ir t h r( H ig h p'It n ica s u! C n lc h t s. w lle r e di t -
\\dIiiE[e Insl[!t wJs palned int t) dCstlab!e de4gn teat ures telen.cs In liquid !c\\cl are IllCasured and t!!e llCe! tan be tms. h an mstallanon accounted f or in the measureinents. For meaure ments ot absohne quantities dunng an unentory. howe \\er. the I k.t:
main gages me highly sen4tne and ha\\e a enor mirodused by the h el \\ ohnne tan constitute mush of the meauirement error. Ihe compk uty of volumeinc nnun0 ke Str.nn gage readm;
.n e m-s a ph it y tl !c n. ' ! h) te nperat ure, but Ilus et test tJrl b.
lcadd) tahbratliin li greatCr w hen tile lessel tit M NCstin'n \\arles ap}qi LIlcs thJ( It ir w it h hei e.h t..n inay r esid t 11 there are toinptinents
- il:Te rbat e d li tr. l}iclr ass urJJ) i 6
hy du uhs imJ telh. but the aie expensne and rela.
Innpellers, b it tles. heat soohng toils. ett.) withm the inely tugun hense, they are not normally used for the
\\ewel On the other hand, ettecttre mning to obtam w eism of \\eweh suntauun c SMt.
homogeneity geneully requires some obstrustions sush as stMTeers tir lillpCl! cts and balIlCs. I!elh e, lIle CNign e r h.
MC;hu re men t of Volume. Ictnperature, and seeks the tude-of f teatures !!Ut are lhJ m ost de4 u ble Specific Gra\\ity f or each apphtation.
(hher dowbxks to determanny buf k tontents by Ikk me.n u r e me n t id u il a me n usuaHy amon pild>J indires tly t!,e Inj.nd le\\cl is measined diresily ;
ine.nur uig \\td u rne ar e tite a tinplicatiinis inttiidused by ontubuted m poor uhbonon ut h. pad level w volume is temper t ure shanges and the erous c then a apphed Remouh or ad.hto ns to prosess tan be nukmg the ru essu y te mpeu t m e torretnuin. M os t au uutch measured by tiMm a pesnely tahbrated tank
\\cuch expand at cleuted tempeutures, although slab
\\t d u nle f ) ti\\ertl(ta me and fli; :1 tr arnterrin2 llie hni u n lanks Ind) desleJse in \\tdunle willl inCrCasillg ten;pera-l lure il the Mdes a!e tonstumtd to b nh. f el!1C n t t it k ultu ne It ) the prih ew d!Ie rilat ne!). Ib[uid 157
/2 m
Not or.ly does the wssel micme change wit h C. REGULATORY POSITION temperature. but the contained solution also expands when heated. Theref ore, each hqtud. level measurement This section pamdes guidance for \\essel design to has assocuted with it the temperature at which the tacilitate the accurate measurement of contamed SM1.
neasurement is ma de. Furthermore, laboi a t or y
, letermmations of spesitic grauty and SM1 concentra-1.
The l'ollow in g guidehnes are of general tion are f requently nude at te m pera t ures other than a pplicabdit y to the design of vesseh in which those at which tha bulk volume was measured and at accountahihty measurements are to 7e uude wluth ahquots were taken. Therefore. the temperatures T he \\essel design shoulJ take into account at wluch ahquots are taken should be recorded. l'nless a.
the uncertainties awoaated with temperature measure.
the elements of random and sy ste matic error con-ments are held within tolerable bounds and all tunpera-tnbuted by each component of the bulk measurement ture correstions are properly made. the accuracy of the and sampling operations and should nuninute the overall bulk \\o!um0 measuremCnt wi!l be poor.
IncasurenlCllt eIror resulting therefrom.
1 Vessel Design Features Pertainent to Obtaining a b.
The \\essel design should comider the Representati\\e Sample
- means for standardi/ing and cahbratmg each measure-ment operation
- and should pnmde for continuing Mixing of Vessel Contents quaht) assurance et the measurement sptem dunng a.
plant operatibn.
[0 ensure a hql!!d solution haung tim orill Coinpo-c.
To arrne at the o\\erall vessel design. the sition,.coel wments can be uuxed by gas spargers, b) by external recuculation designer should integrate the bulk measurement and met hanical unnellers. or t puinpmg the solution out and back l!!L sampDng operations with all process requirements and with any additional constraint 3 iinposed by corbidera-Gas spargers are telatnely inet fectne, lengthy sparg.
tions of safety and entieahty presention.
lny bCing required to bong about unifornuty of the tank s ont Ca ts. Ihey alu) Increase the load im the offgas d.
Piping tonnected to nica s u t e me n t Ve nels t i! t e r t llowe\\er. they are inexpensne and rJgune httle should be designed to drain reprodaubly and. It no mamt0ndthe. Spargeh aie more CItectne tu tall.
P5 Mlble. to drain quickly.
of rurrow tanks than in short, wide tines. The optimum gas lhe design diould iequire tlut i'nly witli e.
lh)w rate h ahtiut 035 in see (1.5 (t m) peI square toot the lucasultinent venel and 114 ontents at rest should B oIlank crim section s
measurements be made.
Mee hamcal agitators (motor-dinen impellers) pro-1 The tollowing guidelines apply to \\eswh who,e ude posane nuxmg astion and are widely used where ba k LonICnl ki dCICI mlned b) w elgbing Ibe \\eOC! and its numtenJncJ h pouible.
annients.
b.
Obstacles to Effecti\\e Mixing a.
The tank should be installed m such a nunner that no \\ariable extraneous loads.ne imposed as Preuse measurement requires that the co mpou t u,n and temperat ure of the so}ution to he measured be a IciulI ob WecbaInCa! of Ibernu! SIIeWes W attasbCd co m p:et ely tun for m be fi n e tl e solution n sampled.
pipmg Systems haung ewentially zero dellection (null
[~!!tt)f t unately titr fl!h purpthe, Ve nej s o m t :11nin g bJ[ance) should be.olblder0d as a ineaIn f or redusin g stre n etIects Iroln (t in nec till g pi pin g then Willl a u tilit tuns til Ml J e otten. f or Critica!itt pre \\erttlon, inadJ In tl10 shape ill den; der c)!inders, thin slabs,iir tlan null-balance sy stein. tite \\ewels should be po ntected annuh shapes that are not suitable for ettecti\\e nusing f rom thernul and medunical f orces. Care should be f > h!hlHGd \\ eweh w hose a%eN ne hon /Untal or MC.u!) so taken to mimmi/c Updity of pipmp to weighing \\cssels, are especuliy pouily adapted to ettiaent nuxmgf 11 a as by the uw of properly supported tiesible in:tal hnes slab oi ghnder does not ha\\e adequate storage capacity or small-duineter pipmg wah icasonably long hon /ontal tM rurb. Io n ll ul M H /0 t heIIHJl stresses, the desl[H should it)r a gl\\en \\tduine t)! 11 {uld and 11 se\\eral sush sldhs Olinders are nunitolded in p.n allel, the prob!em is pro \\ide f or constant or reprodusible temperatmes in the IL !!.eT ae !akated. Wlin se\\eral suull Vebe b JIe s tirines tlng pl[Inp Ilbt) at as pi tulble.
Utaillllilded in parallel. uniltu n;1ty (i the u mtellts i>t all b.
C on Vi d u t li lf h in IIe xlhie InCta! !!IleN alld id lhC \\coC6 h dlltlJ111t to aslde\\e.
any bends. uldir pt iralCd tti llu n t illl /C plpine rigidit)
Sittul-0)titJ1H1Hg law!tig rings lhed as tJnk filteri tt) dh W!d bC (dlCnICd VI I laI IbC fl IUC dia lh !ICC I-pre ci t uitisahty are another impe h et to 1 ive
- Net, w ht n p@hhl, a reculan o cuide e in incrarat o nl.
"\\le eu r e m e n t C ontrol Proer m f or 5pt ml hicar \\taten d
\\suiunum Nec al m
\\NNI 5t andar ds Nif.lN Nio
- 1G t >; mended po sedmes and equm ment I.,r ukin/
Caht rathn T es h niq u a lor hicar \\tatenal, Gntrolf and lhjuld situdes a r' e tiintained in. irs,ther re 'tilat, r s
'iide sin N i s.19, iolame ( ahlu.iti..n l eti:nniues !<'r N,nlear M itcrih preparationi in this seno
( ontrot"( both in preparation).
h.4 N-3
\\let hJnica! 'Inkages bCtwCen tbe welf Wg cirCu mterence ks unibor m w klb c)!inder length.
b t
Jevue and readout inethai'nm should be minunited.and An omalous t it c u mfe r ence uniations m ey hndr ical Incas u r e!N n shimld be r.Norded b) PYans of Ielnitte sewels Nhould not cheed U U$ per cen t bClwetn prin!ma pa l t i t u!all) li the alternaMC !s a setieN of cahbration points.
9 lesers to trans:er the ie.id.ng t rom the sessel to the m % unn h ica t ion. In any case. d:ptal puntout is re inntnended m order to asoiJ pa r a!!n errors.
N) Ihe sewel mtenoi should be as f ree as MMsrcJding and recording bl'.indert lf ali Integ!ated po"ible o Gu!5. blIlles, and olber objeJ!s that Wte!! ele wmputeund unentury spie n n used, the weight with the hnearity of the cahbration.
should be rewided by tht ompater.
c (5) When misny battles or other mtenul J.
Any medumcal hnkaecs useu m the load devises are ewential to the deugn.suJi baldes or deuces nans meion ss stem should be lubmated and protected siniuld luse a umfor m cross section througiniut the thint tor rosll'n or Ihe in trodut Ilon oI d nsI.
range w here Incasuleinents ale nornull) nude. Iwo or thlee sush tt'rhtJHt-Jtea reglolls Jre pernll"ib!c in a It a heatmp-wohng pcket a needed on the sench prouded the nainaam areas aie outside nmmal e.
IJIik. ille piping 'dlould be deMgned so Ihat i pe ra ting replim s s i i! !1 t i tin either it.e umket can be O!1ed to a wn, tant solume or it
[
<an be domed <ompletely to clinunate errors caused by L
ury m e w eight > of fluid in the pcket.
c.
houston should be nude tm penodic m 9
sil ti recahbrJtion til VeMe!s by the additii:n of pretnely
?
t.
Ihe w eighmg sy ste m should he deugned so know n qtunnues et liquid."
that nuti.tl t.allbIaIU'n and perl'idic reca!d ralit'll tan be done m [l. ice. Ibn regulres that the s)st ?m hase the d.
I or sewels in wlash absidute QuJntluCs aie cJ pab di t) of addme i ret nC!) know n welghts In IbC measurCd. proWlon should be nuJe f or keepmg the hect J oser the enn<e measurement rann solume constant, and the heel solume should be kept ses snull. To the extent leauble. the heel solume ordmanls Ense senels mounted on weqJung systems hould not exceed l' of the nonunal wlume of hquid C J r ' h q'la k e 5, incasured.
are ntit sllppor ted agalnst slH ic k s l 'r a p pr t > ['r la t e the sl > illd be r;ud0 6d sta) bars or hmlt s t o ps e.
Mether nuung is done by sparging or by an impe!!er, measurement of the hquid lesel shou ld be I
t he to;!ow mg < udehnes apply :o sewels whose done when the ewel contents are qmewent m order to s
bu i ontent is deter nuned by measunng wl u me,
get an anuute readmg During measurement. retircu.
Ic ' h per at hle. an d speu be graVlty.
laIlng s.lniplers should h0 ttuned int and inC gas Ilow Io th0 dip tubes sllould be the minimum prastical.
The senel should be cahbrated by hqu:d a.
.d htions in such a nunner that the total enor of the f.
If pne u matie dip tubes are tued for bWk mlume cahbranon at any hquid level is withm the de t er mining hquid lesel, care should be taken in an uuq appropnate to its metall wntribunon to the sclettmg the dumeter of the dip tubes, the length of gas knut ut enor of nuttna! uruccounted for. (Greati supply hues. the shape of the open end (bubbler orifice),
aa uug m uhhut on n nornu!!y required for sewels the Gung of the dip tubes m the tank.anJ the nutetuls Gmia!!Iltly Iced tir prodilst Mdu!l;iltli t!un flir se%els that sit GinstrUCllon; a!so, equJh/ ation til llow' ratCS in any st'n tain w aste Wllitions.) I he (JIikJtiim 5lH mld nh.lude palf o dip tubes shOuld be proVidCd.
a wttisient number of hquid lesels to bracket slosely ail dhu mtnitu ties m ilust uJin4h in crownettlonal area.
The u.
t ubes should be InslaNed so that the opemng of one of them is located abme the higJtest lesel b.
Ihe followmg teatures m the deugn of a reashed by the !iquid and any foam formed on top of sessel enhanse the ca pabih t y of obtaimng use rall the hquhl. T he lower dip tube should be located as low measurement enors that are aaeptabic.
as pracucable.
(1) Ihe sesvl shoo!J be a right tirtular The lower tube should be ngid and should be a hoder. with the runsipal nis onented vertially.
supported to resnt bending. 'Ihe openings at the ends of Vewels haung a s!ab wntiguutton should be amided the tubes and the pneunutit supply hnes should be unless spe<ial pr o n u on s are nude for ensurmg destpwd so that pressure drop between tube ends anJ umimnuty of tron sesnon with height the pomt w here pressure is measured does not exceed about 3 pascals 70.01 in. ll;O) for the flow uted used.
(2) T he uno of vessel he:g it to hon /ontal Pneun'at c supply knes should be leak. tight.
j unss+ettional area should be such that tbe pmduct of the crow +ecnonal area and the snullest merement of To prouce a means for measurmg the specific hip!!d lesel that can be incasured W>es not enced 11" grasity.it the hqt.id, ati additituial dip tube niay be iequned volume senutmt) msta!!cd with its oPn end in the hquid a fixed distane above the lower tubt. This measurement can be used to (3) l or cy hndocal vewels tabricated of wnHrm sy speutic.tranty deterntinatmns on a sample nat stosk. care should be taken to ensure that the of the hqui.1 wntents.
15,7 U/9 5.4 K4
The type of re.idout, nunometer or transducer.
of hquid in each vessel, and each vessel in the bank should be esaluated for each dip-tube application. A should be capable of being sampled independently.
nunometer pses a more duect meas ure men t. Also,a presision manometer read by a careful. trained operator 4 The following guidelmes apply to design Bpses better accurasy than can be obtained with consideutions pertaming to miung of sessel contents to t ransd ucers routmely assocuted wTth process instru.
ensure the obtaimng of a representative sample mentation. lloweser. a precision pressure transducer can A smgle ps sparger may be used f or sessels pse readings that are just as accurate without the need a.
for a tumed operator. Furthermore, the transduser up to 3 m (10 ft) in dumeter; larger vessel should have readmgs can be transnutted directly to a data collection more tlan one sparger.
system, there5y asoiding readmg errors entirely.
Iloweser. transdusen should be cahbrated frequently.
b.
Use of rasJug nug3 in sessels in w hiJi For either ty pe of mstrument. the design should proude accountabihty measurements are to be made should be for mf ace cahbration, asoided w hereser powible. Other tocans of preventing l
critieahty should be consiJered for such sessels. It if an mtegrated computerized inventory sptem raschig rings are used. precautions should be taken to h used, the ditterential prewures and the eqtdvalent ensure thorough nuung and completeness of transfer.
solutmn bua should t ' recorded by the computer.
Because rawhig rings tend to iompact dunng use, the designer should consider the need for more f requent g.
Ihe w eight fa t t or should not be used cahbration of sessels filled with raschig rings.
without te.nperatme correctmn unless it can be de monst rate d that any thange in spetitic granty is c.
If ndung is done by external recuculation custly oftet by a change in hquid depth. Uus and if the recirculat:ng pump and pipmg are not ondmon u dl mcur orJy it the sessel tross secuon is deditated to the measurement sessel, care should be c
< or > tant with changing temperature or it the chan es exercised that the m!ation te be measured is completely s
en tuinttred in sewel sidiime or tempCratule are small returned to the measuring sessel and that ruine escapes s
eno gh that thennal apansion of the ses.sel walls can be elsew here m the process. In any case. the returning neg!cctcJ.
solution should be distributed in the sewel volume for cuimple, by spraying.
h.
If hqui,J lesel is measured by means of a sight daw. care should be taken to ensure that the D. IMPLEMENTATION densits o! the hquid in the sieht dass i, the same as the den'ity ot the liquid w it hin the vessel. The scale This section proudes infoinution to apphcants and SEP attashed to the sight dass should bs of noncorrosne licensees reprding the NRC statt's plans for usmg tlus materol and should luse a low coefficient of thermal regulatory guide espanen; prousion should be nude for its cahbration.
lhe designer should also ensure that the sight glass will Exsept in t hose cases in whish the apphcant measure a!I hqmd levels to be encountered during its use.
proposes an alternative method for complymg with hotection should be prouded apinst breakage of the spec:fied portions of the Commission's regulations, the sy h t g!Jss.
Inethod desCithed herein will be sed W the cialuation at submittals in connection with special nuJear notenal
- i. Il the the of seseral thm slabs or long hcense, operatmp hcense, or Construction PCnnIt JpphJa-is necessitated by cntisahty tions dotketed atter June 1.1C5-c3hnders in paiallel cew J e u t ions. provision should be nude f n ensunng tht lu qlb yenelly til the conteills of J1[ o the se wCls.
If an apphC'.I wiloNe app!!Catlon lor a s pC Lidl Altenutnely. pmusion should be made for ensunng nuJear nute;ial hsense. an operat mg license, or a thJt Whltion cannot (Cak f rom one venel to another and construction pernut is dotketed on or before June I, that stdutton Intended ftir a pVen iesiel cann'11 leJk 105. w nhes to the t!in regulatory guide in deseloping te g.. tluough a uhel to another sewel in the bank.
subnuttals for apphcations.the lutment portions of the Pit @ioll sht'u!d aho be nude Ior incasuring the so!ulne a ppIlcJ tit ul w d! be evaluated on the basis of this gulde 157 075 2
REFERENCES 1.
1). M. ('onudine and S.1). Ross. "llandbook 01 4.
J.
T.
trog. "Enaneenng for NuJear 1:ne)
Applied Ins t r u me n ta tion.
pp. 5-41 to 5 54 Repiocewmg.
pp. 3 30-3 32. Gordon and IheaJi.
\\L Gr.sw -IL!!. New h k.10h4.
New %k. lo 7.
n in ung oid Lm lu;; firiJ:cJ 1' 234 5.
J. I:. Ilancil, e
2.
1). M Consdme. ed..
" Process Instr uments and l luids m CyltnJrical Storage Contarners, l'SAlf Contioh llandbooU' pp. 7^ to 7-2 3. Ms Giaw -t h:1.
Repor t Y-15ol January 17.1967 New York.195 7.
(..
C. G. Itodden.ed., " Selected Measuremcut Methods for Plutonium and l amum in the NuJear I aci C Je.
CS.\\l C ite por t 111) 70'9
'd edition, l.
M. Groth and 12 O. Cartan. "l Aaluation ot' 3
in s ti tu nen t itim for NuJear l'uels Repiecessmg pp. ol-as. lo 72.
Ilallt Illput \\\\ tight Meas!!IeMients. [3 \\l.C Rept)rt 101'-1014. J uly 1072.
7.
J. T. Long. op. cir.. pp. 733 7%.
A 4
9 6
p 3rj 3/0 IDI 5 #.o
r UNITED STATES F
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NUCLE AR REGULATORY COMMISSION W ASHINGTON, D. C.
20555 POST AGE AND FEES P AID t net E D staff 5 NUCLEAe UEN OFFICI AL BUSINEST et cut Avoa v cowusssiom b
J PEN ALTY FOR PRIV ATE USE, $300 l-s
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157 077
$