ML19246B053
| ML19246B053 | |
| Person / Time | |
|---|---|
| Issue date: | 08/31/1973 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-03.012, REGGD-3.012, NUDOCS 7907110287 | |
| Download: ML19246B053 (6) | |
Text
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August 1973 U.S. ATOMIC ENERGY COMMISSION
@ MN M EG U LAT O RY G LIGE DIRECTORATE OF RESULATORY STANDARDS
% rs c5 PEGULATORY GUIDE 3.12 GENERAL DESIGN GUIDE FOR VENTILATION SYSTEMS OF Pl.UTONIUM PROCESSING AND FUEL FABRICATION PLANTS
- f. INTRODUCTION Ventdatien sy stems are important to safety because they sene as prmcipal conimement barners in a multiple Lach apphcant for a hcense to possev and use confincment barner sptem whhh guards agamst the special nuclear matenal m a plutomum processmg and release of radioactive or other potentially dangerous fuel fabncation plant as defined m s 70.4 (r) of 10 CFR matenais dunng nor mal or abnormal conditions.
Part 70, "Special Nuclear Matenal," must satisfy the Ventdation systems
- v. d: be subject to sanations m prowons of s 70.23 " Requirements for the Approsal o pe r a tin g temperatures and presst es and to of ApphcationsJ Paragraphs (aH3) and N) of s 70.23 en nonmental conditions aaociated with normal requae that the appheant's proposed equipment and operation, mamtenance, plant shutdown, and testing.
facihties and pr oposed procedures be aJeq u.it e to Ley may also be subjec t to effe :ts of nat ural protect health and mmimize danger to hfe or property.
phenomena such as seismic motion and floods, missdes, tire and explosion, and other acciden At plutonium processmg and fuel fabneation plants, a prmespal nsk to health and safety is the release and The systems must contmue to perf orm their safety dnpersal of radioactise matenals. The presention of such funenons effectively under all conditions by continmg release and dispersal is an important function of the radioattisc or other potentially dangerous matenals. The sentdation syste ms. This regulatory gu de pr esent s systems must assure that the cone m t ration of methods acceptable to the Regulatory staff for radioactive matenals m the effluent gases is as low as complymg with s s 70.23 (aK 3) and (a W4) with respect practicable.
to the design of sentdation systems for plutomum processing and f uel fabncation plants.
The contmuity of necessary ventilation can be a s.;u red by means such as standby equipment and B. DISCUSS!ON fad-safe control systems. He abihty of the systems to perf orm their safety functions effectisely can be assured Venidation systems for a plutomum processmg and by penodic testmg vi safety-related components durmg fuel fa boca tion plant may t onsist of a:r su pply.
nurmal operation of the systems to demonstrate their abihty to perform at design etliciency and to venfy their recirculatme an. process sentdatmn, and exhaust au systems t oge t her w ith associated an t il te r s,
- tans, asadabihty for emergencies.
da m per s, ducts, and ehol m3uumentation. The au supp > sptem draws m and conditions tresh air and C. REGULATORY POSITION distnbutes it throughout the plant A pornon of supply an enters the process sentdation sy stem through glose The sentdatmn systems ut a plutomum processine boxes. hoods, and other components and n remosed ard fuel tabocation plant should assure the confmement aa throudi the exha u st 01 hau rdou, matenah dunng no o or abnorm aJ together wnh other plant sentdation system whah Jmharges throuch a stnk to cund,tions includmg natural phenomena, fire, and the environment. Part of the occupied area sentdatior e x plosio n The re: case of radmactive matenal to the au ma) N recycled to the aa supply system thioq;h the em nonmet. or to an area in which lesels of recuculatm; au system.
radioactisity are norm dly suttiaently low to permit USAEC REGULATORY GUIDES C we e pubnshed go.oes may ta cot.ned by r eount.%cating the d.w
.or,.
des
- to t he US. A to m.c E ne gv Cornm'ss oa W es N ngt o a.
Of 2054s R egula tor, G udes ar e.ssued to desce.tv and meme swa we to 'he putmc A fteat me D"ec t or of R egw ator y S t a. ida rds Comrrects end tuwast ons N Nove reatt 'a thew games are enc w agec ed s',on. d be sent to tne seve'ery uw rrwthvos acteoteme to the AEC Reguetyv sten of memeei m vec N pans o' M the Comass oa U.s A tom.c E ae gv Coremess
- m N rgt on Dr.2064s the Comrmsoce's regu4t ons ta oeweare verhwuei usert by the s'," n oc stusted au. dea's or to provide geo4%, to Af tear oa C h.cf Puhi.c P.os eed rgs staf f 9
evet.ng e4w=of.c protvems or Hegwerot y Gu des see rsot subst-tuteg f ar regu At'061 end C or'iDt s*Cf epecents e
The @wles are 'stued in the f Wun mg 'en broad w
r me...s.ne.uenteme..hodt end toNt'ont dMe'ee' I'ffen tNee het out m swith therre es esOf reywf ed Met
, c. orme a b.1, f or,he
%s me,o 1 PMr RMctors 6 Prod #s the essuente or continuance M e per%f Dr hCente by the Comment.on 2 Research and Test H eac ey s 7 Tr ensporte,or.
8 Os c a,et.onei He och 3 F me s and V ee.4.s F ac. es Pubisshed guides wl8 he few sed per er' d.ca M y an am.it of,rr d'e tC Secommodate 4 few rOnmental a nd $ t g g AngaryggApnew s a me'er iais ama 9 tart Pro'et' ion 10 Ge ne' e' coterrynts and to ref 4ect neww e t or rqs t ion or e s per 4 e ve u
7 90711 ONr'7
personnel access, should be reduced to a level as low as fires, fire-resistant m a t erials of construction, practicable in accordance with the proustons of 10 CFR fire-resistant filters, heat and smoke detectors, alarms, Part 20.
heat removal devices, and fire-suppressien eqtupment.
The design of the fire protection system should mclude 1.
General Safety prousions to protect agamst adverse effects m the esent of operation or failure of this system. For examp!e, a a.
The s e n t dation systems should confine drain system should be prouded to prevent a cnticahty radioactive matenals withm the process areas as close to meident in the event of water ducharge on acuvation of the point of ongin as practicable. They should also a water spray heat remosaJ system or m the event of water leakage on fa21ure of a heat removal system confine and prevent uncontrolled release of radioactne aerosols, noxious fumes, and vapors mto rooms an component, such as a spray nozzle, while the system is i
areas normally occupied by personnel.
not in operation.
b.
Confinement of radioactive matenals should be g
g g
g, prosided by multiple zones. Each zone is bounded by operatmg dunng a fire in the areas they sentilate and barners such as vessel and gove box wa!!s, bundmg ufely hand!e products of combustion throu gh walls, and internal room walls. The pnmary con 0nemem appropnate sentilation channels. A supply air system zone (Zone 1) should be the process ventdation system should remam operational, however, the opuon to for glove boxes, conveyors, transfer boxes, and other discontmue air supply to the msobed space or spaces spaces that may contam plutomum or other radioactive g
materials dunng normal ope rations. A secondary otected from backDow.
confinement zone (Zone Ill) should be the operatmg and other potentially contaminated areas surroundmg h.
The ma t enals of constraction for the the process ventilation system. Areas mude the buddmg.
sentdation systems should be Gre resistant.to protect potentially free of contamination and surroundmg the agamst fire 3 occurring withm or without the systems. A I pomary continement ione, but interposed between 61te rs should be of a fire resistant type and, where Zones I and 111, would constitute an additional apphenble. approved by Underw nters' Laboratones.
secondary continement zone (Zone 11).
Incorporated (UL). Filters and exhaust fans, especially a Onal tilter plenum and exhaust fan enclosure, should c.
Pressure differentials should be manta med be located where they are not exposed to the direct between buddmg continement zones and also between the budding confinement zones and the outside effects of fue or explosion in the operating areas. Smoke detectors and thermostats for fue detection, approved atmosphere to assure that air now is trom zenes of lesser by UL 2 should be provided in the sennlation systems.
potential for contamination !; zones of greater potennal Fire. and smoke suppression equipment should for contanunation, i.e., from the enurons into the i.
building, thence to secondary and pnmary confinement be so located as to assure that the mtegnty of nnal umes. Deuces should be prouded to cont rol and high<f ticiency filters or tiher systems is not degraded.
mdicate pressure differentials be tween confinement Spark and Game arresters and isolanon vahes may be zones. Alarms should be prouded to indicate when used at lih er mstallations m mtermediate stages of pressure ddferentials are not mamtamed m a presenbed et0uent cleamng. A heat removal system should precede the first stage of a high-efficiency filtration system range.
d.
All sentdation systern should be designed so servmg as a final means of ef0uent cleanmg (see that the fadure of any one compment (equipment or regubtory position C Ae).
connot dmce) wil! not af fect the contmuous operation p
- h. wmey t ccmbustible sehents, gases, and of the s entd : tion sptems. Ventdanon sptems and vapors are idenutied or posttJared to be present m a components should base fail-safe features with prouston ventdation system under normal or abnormal conditions, for abrm mdication.
they should be monitored by stu table contmuous Onsite emergency pmer supply systems should g
e.
g be pr ouded to operate the sentdation systems and 3 ', 3 semponents as well as other systems and components k.
The sentdat:an sptems should be designed to a portant to safety. Venulation systems should be withstand t ornado sendiauns with ou t loss of capable of operatmg. Junra normal power outage, at c a pacities requned to mamtain con 0nement ot-conhnement capabihty due to mechamcal damage to the system or components or due to the reduced ambient contanunants. The onsite emergency power sources and the e l e c t rical distnbution e n cuits should hase P "'n m at the nuake and exhaust opemngs of the buddmg. Protection agamst missiles should be prouded inJependence and testabihty to assure performance of f r the intake and exhaust operungs.
then safety functions awuming a smgle fadure.
t.
The ventilation systems should be designed to 1.
Components of the sentdation systems should withst and ans credible tire and exploston and connnue he designed to wahstand the ef fects of earthquakes and to aa as contmement barners Fue protsction teatures remam funct:enal to the extent that they wdl prevent a ihe sennlanon sptems shou!J mdude tire doors and the uncontrolled re' ease of radioactne matenals to the dampers or other proven deuces to res :ht the spread et e nu r onm ent.
3.l M
2.
Occupied-Area Ventdation Sptems 3.
Process Ventilation Systems
%pp!> air shm!d be prepedy conditwned and a.
Air or mert us should enter eash sentdated a
utcJ at or near the se.!aa to the potennally close box or process endosure through at least one Js
,4 namn.ated mas et the taahty lue-resatant lH PT filter and be dNharged through at o
INtd +i makeup or supply umts shouk be least one tire-resistar,t fiLPA Idter to exhaust ductwork plc d t rum the weather. I or example m t ak e s leading to a tmal tuter system (see regulatory position
~
~
L ma ced w as to nmunne the ettects ot hich C.Neh T he m!et hiter presents any back tlow of u a :an snow, i'c. and deh n s on the operatmn of the contamnants into the work areas. and the outlet fdter o
s st a. Heater s may be necessa:3 in meas where icmg nummves mntanunation of the exhaust ductwork att s a.ne %gtlitlwanI supp!s liktCi da n' age. bIeCns b.
All protew senulation systems should have should be prouded mer supply au mbts to protect ade<pate upaat) and appropnate controls to mamtam o n wp r akh and n_lters t rem w mJ-Hown debrn m
at le a n, l a, hnear teet per nunne mward au llow
\\n n. m eash /me 11 m /~.111 aca shou:d tinouch the maximum tredible breach and theieby n n, m ed nea th: thi 'hroudi mJnidual area gnlh present the ewape or parna2:ates.
legniers ca.h equ pped unh a t ue-eustant An or mert gas trom glove boxes or other s
ncdom at naency Idter Re tdhr should hne an p%cw nJosures wh re w et themical operations take a t.w s ph er n dust spot einaency' ra ir; ot pam sh ould be treJted to protest the sentilanon am m mutely w'
or beiter. I Jtered aa can be dus tw R tmal tilter 3, anJ tilter p nums trom e.xposure L
to n _ ulated or.an be dachargt d th:ous an exhaust to wetimg or deletenous themical attask.
sen1 Loon 9 stem.
J Cor.aderanon should be enen to reanul anon d
Pat of the /onc 11 o Lne ill Idtered air may or exhaust an or mert gas to ghne boxes and other o :e. m u!ated to reduse th: :ma h Js 'l he pom'
,t p ro < e ns e n J os u res to muunu/c release of radionuchdes
/one ll or /ene 111 an unhdraw.d shadd be seleced so to the !insphere It recuculation n useJ. the exhaust ps th o /one I.m streams cannot he dow n uno the /one 11 irom these enJosures w,uld be tdtered through two or /< me lit mr supply. I ocal exhaue enbent : hat may stages ut tue-resatant lil PA tdter,in senes before beme m ma m w x mus toxic m con mne e.nes m.J s Jpoh recnwalaL d.
sho dJ not be recirculated into a /one 11 o Zone til met Recmulated au should be passeJ throuch two 4.
Fans stages i s t" f ir e-res nt J n t hich.etti iency particulate au till PA) tihen in 'enes betare n n retmned to /om H a
I ns t alled spare fans ad isolation da mpers or /one ill Meau sh<'uld be prouded tor the supply an and exhaust
~
an e
pnn nion should be nude for wn t m uo u' systems when any one tan n moperative m a system,a
.mn me of re, o culated au piior to the sc<ond stace b d dow damper shou ld automancally isolate the idle ill l' A tdiranon. I pon an m<hcanon that the hnnt' tan f rom the suteu. Standbv t'ans should automatically tm oluHe notopes of plutomum speata d m TaNe 1.
stm and iuse lut ncient, ap$ city to mamtam mimmum iv m i
,t \\ppenda itto in ( l R Pari ?u or m th' 1
- nom hne been eu ceded. th( nr m the amh.
b Alums shou d be piouded to mdicate
- i. ;, ma,y o stem should be da ci te d to a du non of ed senthnon tan (see regulatory m, e-ilu.,A exhaust senti:an a y eem tor d s harce pusition C.5.fi.
ai nher p'enum. The pomt of daersion '
th: u.,,
/.
11,,/om lli tHtered au mt t he anathrough Supp ur tm, shoulJ he mterhded with an gg n133 p. mn pres.ie sensor to present supply tan p
ao u et on ss stem sho dd N pr o to the heat operatam un!cu the exha'nt lans are runnmg Tha will p
!me iht tu lit t e r plenum.
, u,
prm em prew n/atmn of any process room or area 11 ist /iir:e 111 Mr l.Js FCre'un p
it /i i
,, h '.1 JJ e xh imt s critila ti 'n '.i'
.,! ot tenduy opeutn. s and or equ:pment J
- 1. mere r c v po *. shou!J he supphed to f ans in v
s e the e,ent of tmbue o! the nornul pm er supply t see i.
\\ imi nher p!cnun sh N hne a lent two reculatory posinon C.I.e t h e w ant HIPA nhen m - es-III'P A
~
4 'i k N cned to numan spea nm an u ns 1
\\tli i s t ud and Mll. IU10wA" and should satnty 5.
Ventdatmn Sy stem Construction and L> out p
acnn oi 11 An ~ l nul nh utmn sy stenn 4.
uimt r tu tu m t<ir the ventilatnsn
<lp l jtIng h!dl-etticiency t,lters other than LA a.
ie er on, Mict, m J haur g equnalent et!L r e and resntcce to sy stenn should be < net u l> sebed axordmg to su.h
.eptab!c ( set
( gula tim ) p lotioM O f 5d!CII 'on dderJil'lns a' st rCn/th llt w ilhtand adidenI Jk) at is
,!c,a cond: on s.
' +
resnian. pa n<ulaly when the ':!t a ed an 4 h m d to th.
amaated w uh hen mal pros aes : ire resntante. long s 6: d a std
~t v os ni hm. L, red u oper a L't to
+ cJ neq;ent :e piaceme n t of inc 4 4 s tC I-
' aIed C4JiH:ith' f Ld srINotb Wr Id%C tlnish Ili ii ; i i
'c t c stu sent!s'.
2 l
2 s
ger ius e t a n:w t s.
ad m des entamu. anon mN k
2 142 265 m,
b.
D u ts and hounngs sho2d he despea.
caen to locatm; cent:nuousl) operat:ng exhaust fabr.cated, and eretted with a mmirnum cf iede sqier, atter cach stace d llLPA Garanan protrus:ans ar.d crences that could co!!ect du.st and e.
In add; ton ta a Fcal stanen alarm, ine ( AMS mcature or that couM impede personnel or create a ard stack mennonng systems shou!d hase readaut and huard m performance of their wori. Dxt runs and On a: arm pareis m the tentral centrol area (s) distnbutors shou!d + sre uniform, representatne a:r flow past mornto.ag and samphng stations as web as Giose Boxes and Other Process Enclosures duoar,h ther instal!anans.
a Glose %es shVd be ccnstructed us:nc th c.
The design should perm:t co w rter eu pm a r md ed whnN to me inspea om m am t en an ce.
,bnt am tnatia a nd i tmal antamhent and numm:ze le. sage. Cambusnbb rep!xement of entical eporents such a3 tihers. tans, atMs out are an mtegral part of the gue box
--m< w ~
should be held to a m:mmum d.
lio u s m es, nher rn vnrg frames. and ca:'
h Wd of end, sees should be %d a should be designed to w:thu.md system pressure chanee' NdMt sentdatam flow to mimruze the sprud et wohout distortion' fatine' or vieldme of suc Heat detectors 4
4 arw comyast He ps anu up, t:re.
magmtude that mleakage er hy passme of the tdtos 3etec a.n men.rs shoului s^ pimded on p)ose bmes v:
resuh ertlosures where tire or explosion haz ar d3 exist.
e.
SJ- ', retu culanon' process senn!ation, and i
Actomata tire su ppr ession e quipme n t shou.d be exhaust ducctg should ince porate manual and prouded in these boxes or entlosures Where automatu automatic dn vrs and centroh to etnhute ed 4
hre detector; w o,. a d
- s. -
a regubte the me ernent of n m exh room, area, M re mt r e a u: r e s..
u a
n stems n stai ed an d prm m'ons made for manu ai tue senniation syst.m and to prevent possihte bd Cow
.r suppresswn.
case of prewur. reser< t
. Small dme box er enclosure ssstems supphed uhde pm, pressure' should hase f.
The vennhtion syter"s sht uhl be app: grot e '
wh mn mstrumm 'ed to read out and alarm.n one posgne.atnng po uste < J et J wices (dikhargmg mte an s
m' cennal to, rol areat Dese neas shouM be desicned n edet emi to pmem. rpressuntat:on Funhe per nut i <,.u pancy and action s to be taken to operate the should these u ue us he rearcubnne all n ec e ssa n s en nl a no, sptems saf ely dunne normal or abnorme hup xd Num pg"nt for nNoux anE c on di n on s-or explosne sapors t : cases should be considered d
The gles e bm or ene sure design shodd en Ventilation Sptem Testmg and Morutonng mm Na rp a tr' with mimmum expmure m
pe rsonnel pe r fm tmr. c tN s ia,k and with nununum a
Pr ou sion s shoyM be made m that compm m wh of contammn to the ensironment outside of of sentdanon sp te ms tan he teued pen < >du a a t'
the Ane box or cou-t i pv ! a h:!1 t ' arid regulIed t'.lPe t hCa! pe rtorrH 3Ilce $ hCs tm n brh'n TEM a hoe N'x Ih n '
sh.mM imlude ta rubdity f or pe noda meaauremo '
or enchnure sennbtam w > tem should include demes a a i r th 'w 3 In e xhauil ducIs afid in ('r a f e qu;pmen t, i.th' g g j
and g ose boxes en t losur e and the urrounumg w ork area. the E!'e r b
ll"~
t a pa bih t s sht'U!d be pr oside d o'
resniance, and the exhcust now rate trom the box m utider Londith>ns as t h he 141 d $1.G J s praclicab e. Ibf j
isIleraltrw sequence that w.>u:d bring sent::atit a Tendars e ti I in u stenn C t m u ous proieu. a se nsi sh t m,.o,,oc a.
mio atuun* untadmg the narn!er ahernar powe prin ide, t<1 mt 5 nit, r 3hpa,rgg3} preogre <3r tegyptrat i
u viur d.'s add the GesliJl J;r Otlw deIlsers tapabi}It and abrm at a p 41n t w here toen:/Jul pe rsonnel arl
-\\!! exhaust;ni dJtts at d sta hs w hl6It i: 1.
stationed t
cen t am plut onium ton tamiaants shool ' be p u ided w it h twi, rm >nin ring a stems a c on t:r mius im mi t.
3 gg 3,q,
l('illtll hi'u > Au Mllr: lit 5r in d M, sie m ( k A bI dnd J I A h exh. si nLer hou m douM hm. nc s urnpling pu', uses shood u pb l he pron s nxed s a
a d
IdIef l bi c llm h C '
- ' U h t r a be desidte d t()r lu n;netis sa m pi ng Jnd l-' a '" d I ' "I a d 5 mi'lin !mg t!a r e p r e se n t at n e sam ple s inh sptem shouM he urut ture shouM have muumum leJ e f rom ouNde '
v ir. net t ed t o an e mer gen cV power supplV ( Nec reQbn '
mside, mqde r+i i ny N de or a.ross the Ster ejl s,
p nit 'i o l' l el the etiritlntious statk sampier d'il!d bar rier (e x<lusise t't t!!c ti!rer I alert topurant pem:ne! throuch an 'udiNe and um b The tW e r act ess oper.my
- u. these hoam an r;uN i a! Ur !! thC alrNrIe radloacInc ebIluenIs casL shuM pe r mlI bher Icinos a[ ar.d 'ep!AemeN wlO mmimun expmure tc penonnel pert urmmg thn t a.k presenbed hnuts d
\\u momta mt and w arnme o stems (mJuda t and w ith imnunum rdcas of sntanur. ants outud
(' ADI sh s WM be Psta!hd m arCas where radaus ':sc th-h asme materu! n handed. Mr samphne beo shoid prod i lhe tuter Lou y s!n dJ be em.:n < wm e
r e p rec aine um p!c of th: mtenna! aubor
< euan teu pe:S n1 pctnat icha+ m pbcc ' snra of r as l l oa i. i n ! t s hcl!!g UIca thed. (h'inide ? alle 5f oW d be ah
.Ie f sIaies w irb d!'k Is ! pblh d! ate (IN M) 142 266 o
d.
Damper valves should be so located that a bank f.
HEPA filter systems should be tested after filter of filters cr.n be completely isolated from the ventilation instaMation usmg a ' cold DOP test. Acceptance should systenu dunng filter replacement operationis.
be based on an efficiency of 99.95'c or better for DOP e.
A FIEPA filtration system serving as a final having a hght.scattenng mean 6ameter of approximately mean3 of effluent clearung should have at least two 0.7 microns. Regular in-place resung of both on-line and stap of tire-res.stant filters in senes m a filter plenum.
standby filter mstallations should be performw because A heat removai rystem and a spark arrester should of system detenoration that can take place even when prece te the first stage of filters. If a coolmg spray such the installations are not bemg used. Test prxedures used as a v.3 r spray system is used for heat removal, it should comply with the recommendations contained m sh oal ! be fotbwed by a combmation spark ORNL-NSIC 65, " Design, Construction and Testing of t
aneue m lemister screen to also remove entrained thgh-Efficiency Air Filtration Systems for Nuclear Trepk, thereby protecting filters from pluggmg and Apphcation"' and m Regulatory Guide 3.2.'
damago A roughing filter should be mounted behind g.
Final fi;tration systems incorporating these wmp wents to remove the bulk of the high-efficiency filters other than HEPA filters and havmg draft-carned debris so as to avoid loadmg the HEPA equivalent efficiency and resistance to fire are aho filters mstJ!ed downstream, acceptable.
The coohng spray systeni should operate automatiedy (with a manual overnde) upon abnormal heat nse m the cochng chamber mlet mdicated by 9.
Quality Assurance Program detectors in exhaust ducts fee 6ng the filter plenum. A manually operated valve actuattng the spray system A quahty assurance program should be establided should also be provided as a backup.If a dram system is for the design, constrt.ction, testing, operation, and insta!!ed t) pr event accumulation of hquid in the maintenance of all structures, systems, and components plenum, th-collection tanks should be of favorable addressed a this guide in accordance with the entena m gomet ry.
Appendix B of 10 CFR Part 50.
O mw 3.12-5
REFERENCES 1.
Underwnters' Labor 2 tunes Buddmg Ma ruls Lat Nas al Pubhcattuns and Forrns renter, SMii Tabei (latest edition). Copies may be obtamed from Avenue Philadelphia, Pa.19120.
U nde rw n te rs' Laboratories. Inc., 207 East Oh o 6.
MIL F-51079 A, "Fdter Medium. Fire Resntan:
Street, Chicaga, Ill. 60611.
IL gh-E f fiu en cy.'
Mihta ry Specificanon. Ctpies 2.
U nde rw rite r s' L abor atoncs Fire Protection may be obtained from Commandmg Offic. Nasal j
Equipment List (latest edition). Copies n.ay be Pubhcanons an d iorms Cente r, 5801 Tabor obtained from Underw nters' Laboratones, int,207 Annue, Phdadelphia, Pa.19120 East Ohio Str et, Chicago. Ill 60o11.
7.
U r d e r wn ters' Laboratones Standard l'L-S w,
3.
Regulatory Guide 3.7, "Monitarmg of Combusuble
'lhgh-E fticie:Ny Air Filt ratien Units.
(also Gases and Vapors in Plutomum Processmg and Fuel dergnated ANSI fl 13: 1-1971 L C opies may he Fabocation P!an tsf Direc t or ate of Regulatory obtamed fror-Unde rw nters' Laburatones, Inc. 207 Standards, US AEC.
East Ohio Street. Chicago,111. 60n11.
4.
ASliR AE i American Sosiety of Heatmg, 8.
C.
A.
Burchsted and A.
Il F ulle r, "Desien.
Re tn ge r atm e an d Air Condioonmg Engmeers)
Construction. and Testmg of Iligh.t-f ticiency Air Standard 52-63, "MethoJ of Testmg Air Cleanmg Filtration Ss stems for N uclear Apphcation.
Dences Used in General Ventilation for Removmg ORNL.NSIC A5. Oak Ridge National Laborator'.
Particulate M a t t e r," Section 9 Copies may be J an uary 1970. Copies may be obtamed trorn obtained from American Socie ty of Heatmg, National Technical In f or mat ion Se nice. lS Reingerating and Air Condinonmg Engneers, Inc..
Department of Commerce, Spongfield. Va. 2:151 l'mted Engmeenng Center, 345 East 47th Street, New York, NY.10017.
9 Reculaton Guide 42, "Ititciera) Te,t"
_ m 5.
MIL-F 5106xC,
' Filt e r. P articulate, liigh-A ir-('le am n; Ssstems Contaming Device-tei E fficiency, Fire-Resist an t f Mihtary Specificanon Removal ot Parne!cs." Directorate of Regulatory Copies m'ay be obtained trom Commanding Otticer.
S t andards, US Al.C.
b T42 268 3.12+