ML19246B043
| ML19246B043 | |
| Person / Time | |
|---|---|
| Issue date: | 01/08/1973 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-03.001, REGGD-3.001, NUDOCS 7907110229 | |
| Download: ML19246B043 (1) | |
Text
(#( k55 1 YbRY GUIDE 1/8/73 S:!
DIRECTORATE OF REQULATORY STANDARDS Dig,n g REGULATORY GUIDE 3.1 USE OF BOROSILICATE-GLASS R ASCHIG RINGS AS A NEUTRON ABSORBER IN SOLUTIONS OF FISSILE MATERIAL A. INTRODUCTION Maximum concentrations of homogeneous solutions of uranium and plutonium m sessels of unhmited sue Section 70.22 of 1J Cl R Part 70, " Contents of packed with borosibcate-g! ass raschig nngs are speatied A pph ca tion s" requires that an apphcation for a license The concentration of these solutions is expressed in to recene utte to, own. acquire, delner. receive, possess, terms of the mass of uramum or plutomum per umt use, transter, import o: export special nuclear material, volume. The concentrations s pea fied for uranium other than an application for a license authonzing ennched m the U notope are apphed regardless or 235 e xpor t onh, shall contain, among other information, the U ennchment but v ith a hmitatmn on the 2i3g 235 proposed protedures to avoid accidental conditions of content. Specifications for solutions of uramum which criticahty. Procedu res for this purpor.e mclude are pnmarily of the U isotope are desienated as 233 233 incorporatmg neutron-absorbing matenal suc h as boron
" Solutions conta mm g more than I wt t o, m process eqinpment. This regulatory guide describes a Limitations on the relauve abundance of the vanous method of using borosdicate-glass raschig nngs as a isotopes cf plutomum are imposed on the specifications neutron absorber 1 or criticahty cont rol in plants appheable to plutornu m solu tion s.
The de nsit y of processmg speaal n uclear materials accepti ble to the hydrogen m any solution cannot be less than ~'5 g hter Al C regulator) staff.
nor greater than Il 5 gjhter.
B. DISCUSSION C. REGUi. ATOR Y POSITION Subcomnuttee ANSA. Fissionable Material Outside of Reac t or s, of the Standards commit te : of the Use of borosihcate-glass raschig ungs as a neutron Amenean Nucleu Soacty has developed a str ndard for absorber for entieahty control in plants protessmg tissde guidance on the u.i of borosdicate-glass raschi; rings as a matepals in accordance with the guidance and neutron absorber m solutions of fissile mate rials. This requirements contained in ANSI N16.4 ICI 'Amerwan standard w as sprosed by the Amencan Nation al
%tional Standard --l'se of Iloiosibeate 6f ass Ras hig Standardi instit ute ( ANSli on October 20,1971, and Rings as a Neutron Absorher in Solutions of Ibile apphes to the o e of borostheate-glass rasch g rings for Matenals,"' constitutes a general y acceptable procedure pnm sry enthaluy control m solutions contaicing 2 3 s U, to asmd accidental torditions of enticahty.
3 " Pu. and 233 U.
The chemical and physical enurun ment, 'c roperties of the nngs ar d packed vessels, main t e n.in ce ine tion procedures and enticality i n,g,,
,n y 3,
p % n, a
,,o,n
,s, 3,,,,m en s pa,,,
operatin.R lim't s are specified.
Sioet y. 244 F a3t Ogden As enue. ninsamie. iiiinois ans 2 i.
l 49 1/ I US AE C H E GULATOP 'e guide S Cop.es or omshed p. des mov tie otwo.ned t>, r equest nd-st, the d s om dovrers to the US. A tom.c E nergy Corneruseson. W esh.ngto n. OC 20'> 4 5 R eg -* ' or, Gwos me.ssw
+o nose,.tm ne d mes e eve.ienne to ete put>bc A n*m eoa Director of Popletory Stenderde Comments amt sugest.ons *or meNh a ;ceptah8e to t he af (, Rep;eto,, pe#- of 9,rwnt g specif ac perte of 8 - - -,. en these puntos are encouraged end efhid he seet f 3 'ho set'e'**v i 'w rara mesmes. eyw a non, go
,w,n.,,,
, edinegves usert try the stef f
,e of the Comrnsesen. US. Atorme E nergy Comm essor. Washansion DC 2054s e eNe w, specihr p. on, ems o, popui, ped w,deng,, o, go p,o,c,,,,o,ng,,o Attent ce Chast. Put>he P oceedags SteH ene ra R ogs et or, G w.oeg e., nog sutiet.tw es f or regulations end correherwa a.i h 'he n e not re weed Mothews: end go yg, gn, dagsg,en, g,om those set out ers The pedes are soeuess en the to ioneq ten tiroad d-w.s ons r
s
'he r d et e H be e< tep*etse.t they grow.oo e tes s for the f.renge regwsite to t he saw.nr e onre at.nveme r # e pe,m t os bc.e se t y the commsee.on I Power Reactors 6 Products 2 Reneerdi and Test Reectors 7 T r oriepr> t erm 3 F woes erw$ Meteriese F ec.e.t es 8 Ou upet +onei M*e'th P atmsr *rt gwdes am be n ew sed per.od+(ati a, es eoprope.eie to suommodese 4 Environmasttai end siting 9 Antitrust Rer,ew
( ornm ane t and to e' ect ruew sel s rTwt.on or es pee.gecg
$ tuf eggy,geg g,gg pign, pro'*( f.On 1O Ge ne' e8 t
A0 A
7907110 7 /