Document p2mvG6wMoK3KbKX6j36q2MQ5k

> LU QtL )3) :? FROTECTIVE EQUIPMENT SAFETY ENGINEERING STANDARD 'RESPIRATORY PROTECTIVE __ EdJJIPMgNT - >iiwce T Ml 1 A#C RCYilCO T**40A#0 JAN 1994 DEC 1979 DEC 1371 S2H Pggt 1 of 9 '-esja'd tnelud* requirement* of th# Occupational Saiaty and Health Ac o?.l970 (OSHA) as publunad in m# Caoarel l-irc- OSHA wlofmation i printed in ted. . ... ... ___*. 1. SCOPE 3.1.1 Rrapiratora purchased on or boforo : Tht* atandard provide* information for the aeleetion. ujj.. _ani_ care of. reapiratory protective equipment i fr*piratory. The term "reaptritor' in th in atandard i* Soptombof 30, 1974 and meeting the following Bureau of Mine* Schedule* are approved for u>e until the following date*: ujed inclmivelr and applie* to atmoaphere-aupplying and i'r-purif.vtn| device* that provide breathable tir to the w.-afer within the limit* of the equipment, whatever the cjiirfiTof tir. Thia atandard doe* not apply for expoaure to nirlwme radioactive contamination for which apeeial eoi* deration may be neeeaaary. ijjL - 2. GENERAL . _ Iga. . * -T _ ?|t- li --mratnra aimulil not be u*ed a* a auiwtitute for Ifl'iv' fvhau-t ventilation or other mpnccring control r. ' v - >-*,*- : .*." .: Type of - fteepfrator Bureau of Mno* Approval Schedule Tavmlnel Uaa One Self enntatned Caa maelta Supplied air Dual. fume, mwt Chemical cartryjK___ 13 thru 13E 14F 1911 21 n an March iT 1979* ,. March 31. 1980 " Match 31, 1976 . Match 1976 nlfwnnu,,i-d tireattue* ippafalia ay, he in im,i the fwpitewlema of 30 CTR. !' 11 aavt e-ia.ivU^. R.f.r in mamrfa*. Tuter, Temunal av Hate, art heint wmwrtfnfi h, OSH Chad Current autua' Irth Depaflmmal OSHA (/muiiiutnra. " Terminal me date haa teen viUiaravf, and 1 mrinfimtr.__ 2^..Re*pirator* ahall be warn at all timet where the. ai.jtophere may be harmful to employee* due to unuaual conthtion*. and where work ia neeeaaary in contaminated nf'Vy pm-dcficient. confined area*. __ jj"_ 2.2.1 When the air i* deficient in oxygen, the aymp- ' 3.12 Reapiratnra purehaaad after September 30, 1974 aheil be manufactured per quality control plan ap proved under Title 30. Code of Federal Regulation*. Part 11 and ahall njpet the requirement* of the Bureau of Minei Schedule* drawn in 3.1.1. Such equipment will tojj1_'ran|c from inereaaed volume of breathing and ac bear an approval label bearing the letter* "TC" inatead of celeration of pulac rat* to uneonaeiouanoa* and death, "BM". ' depending upon oxygen content and the degree of a per* on'* activity. Unconaetouanea* la Immodlato whan a mnn breathe* pura nltrogan and daath may follow In a la.jmlnuta*. .` 3.12.1 Exception, approved reapiratnra purehaatd aflor Soptombar 30, 1974 and on or bofora Juna 30, 197S may be marked "BM* if NIOSH haa ap proved the vendor** quality control plan under which the --2-2-2 An oxygen deficiency mayindicate a haxard reapirater waa manufactured. i than, inert gaa: e-g* flammability (aee 4.4), akin injfTcttv. or absorption through the akin, particularly 3.1.3 Rcapiratora purehaaad altar Juna 30, 1973 hydrogrn cyanide. Threahold limit value* (TLV'a) of air ahall meet the requirement* of Chapter 1, Title 30. Code rcuiaminanft are pven in S2T. Portable oxygen and of Federal Regulation*. Part 11 - Reapiratory Protective totic-ga* detector* are covered in S3T. Device*; Teata for Permiaaibility. t.'--.------ * ' . i. _ * * - * *... r* 2.11 1`urc oxygen ahall not be uaed in atmoaphere- 32 A liat of the reapirator* and their manufacturer*, cer implying revpiratora. " ' tified by th* National Institute for Occupational Safety and Health (NIOSH) per Jl.l 2. m* be obtained on 3. APPROVED RESPIRATORS requoat for HEW Publication No. (NIMH) 7S-- 119 plua euramulative lupplementa from: 3.` Where achcdulo* for a particular type of equipment have been eatablirfied, only equipment liated and ap NIOSH Teating and Certification Laboratory proved by the Uureau of Mine* and the National Irulitute 944 Cheatnut Ridge Rd ." fm Occupational Safety and Health ahall be uaed. Morgantowru V7 26503 Pv.iona printed ,n rad* ar* Irani OSHA regulator*. Metier, 1*t0 13* OUP^ 0960554 l'~r. li--------^>:ovv V#*4ort #n4 m#reh#n4is# d*ignti#n* #r# fi*n t# 4#tcrib# m#t#ri#l nd my rtbf melud# *U tecotabU #ro4uett- Subtitwn#tt by *u##lip f t# b m#4# only n Mpftvd f th# l#e#J utW#ny th# u# * tht* t#n4rb. DU 040764 Btafeai S2H RESPIRATORY PROTECTIVE EQUIPMENT Pig* 2_________________________ __________ JANUARY 1|S4 Thlg Piflt W> Spt 197| + iso Mnsil Offtrr nf Technical I'ulilirilinm l'ni IlfTtri* Btiildinn C.inriKnKYi. Oil 4&202 ! **. Ilureati of Mine, HrnUh ami Safety Kceirch anil Trtin|C Center 1800 Knrlir* Ave [,fitlHirith. P\ I 521.1 3.3 \l Iiw* preaent time, there are im approval aehedulea flip nir.*n|i|iliri| aiiltv 3.4 \ li*i of tin* arveral type of mapiratciry protective ntuuimnit. iiirtliiiil of operation. ue, limitation*, anil rptnork* i* p.ivrn in Tultlr !. For additional information in tin* regard. reference ilioulil lie made to: Prmtie** for Mepiratory Protection. ANSI Z88.2. tmrrnnn National Stomlanl* Inatitute. Inr. 14.10 llro.tdwa*. Ne%* York. NY 10018 lle*nirctpr; Protective Kifuipinent. Uata Sheet 't-441 Nutimial Safety Council. 125 North Mirhittan tirimr. Chicago. II. 60611 Ix'i'iunrt rxtrrmrly Iml intiicatr* that rnarv'nlritmna above tin* caniater limit have Iwrn encountered.) ' b. If iiauaea. diuineii or *tgn of ditre develop. C. If the raniter ha* a window indirator which hm the apeeified color chance. d. If any leakage i* iletrcted hy *mrll. tatr. eye, no*e or throat irritation. ' If high breathing teaiatance dr4r Inpa. 4.4 Air purifying rrapiratora. ahodfiT not he uaeil in atmoapherea immediately dingerpua to life and health or when the rontaminant haa poor warninfi propertiea, p,. rept for eacape. / 4.5 Uaera ahnulil aelerl ranutera and eartritigra apeci. Hrally approved for the toxic ga* and ronrentration to tie encountered. Caniater maaka that hear the laliel "AII* Sendee." "All-Hurpoae," or "liniveraal" ahnulil not lie1 naerl fur a peri fir gaa or vapor if a caniater i available for that apeeinc gaa or vapor. 1/ lb*pir*lorv Protective Device* .Manual published by \meruan Industrial Hygiene Association and \itimran Conference of Governmental Industrial llvgirn*!* (ropir* are available from Ilraun ami Hfotnrii'lt) ItK*. Hot 120:t. Ann Arbor. Ml 48106) 4. USCS AND LIMITATIONS / 4.1 l fr. of respiratory protective equipment dial! have mriinal jpprmal. / 4.2 Th* air-purifying rssptrators; l.a., eanlttar gaa masks, ehtmieal cartridge respirators, and machanlcal flltvr raspirators (Tabl# 1C) shall not bt ussd for rtacu* work, or lor amarganey work ol any naturs. Tin* * Ihthiim* ihrw respirator* iln not supply oxygen ami tli*rrfiifi* ill not jmifri't Nsatrwt |***ihlr oxygen deflcicn* % Htiur reason* for thi* requirement arr that; 4.8 Although rir>ronUinr<! breathing apporatu* nr ronv Innatlon airdinr and rlfmmatnrd brrathing apparatu harr no concentration limit in regard to toxicity, many toxic gae< and vapor* arr flammable and the uer could )ir expnaed to a potential Tire or cxplnaion. The 2'prrrcnc concentration limit* approve*) for Inxir ga removal with ranitcr*tvpc ma*k i* within the flammable range fnr 'me gate*. Work in atmoapherea in or near the flam mable range ia prohibited. When thr possibility of flam* mahle atmoapherea exists. check thould l>e made with an rxpbwimrtrr and pemtiaagble ronrentration* con firmed prior to entry. Stamiard K6J provide* information and tntructmna for uae nf portable flammable vsfmr and pt* detector*. 4.7 Rr*piratory protection t* required for cancer *u*fert agem*. Kcfrr to OSHA regulation* for peeific require, ment*. Sectum 1910.1000 aerie* ami to S2T. a. (a tmik an* iiormlrd for ttr with no more ilum . bv volume of nutk togtr gae*. 4.8 An uneontaininatrd *upply of air mut be a*ured when u*tng a hoe mask with blower. b. (.Itmii*al cartridge respirator* arr internied for tiw m significant Iv jnwrr toxic cas mncentralmn* than canister s;* ma*k*. Limit* vary fmm 0.05 percent m.iMimmi to 0.1 ^percent maximum. 4.3 The following wanting ign require immediate r*`ftirn to fr*h air: / I. l rvornfortalil#* bent in tlir tnhuh'd air. (A properly op'rating cnniler will become warm on e\fMi-urt' to certain gur or vajMir*. but ti ranitrr whii'h S. SELCCTfON 5.1 In selecting s re*pirator. the folbming fartor* (5.1 5.l.fi.I) and Table* 1 and 2 should be i'oo*ilered. hnginerring |)ept Report, 4cce**on No. 15167 MReapir atiir Selection," uio will provbk* guidance. * S. Nature of the hazard b. Severity of the liaxard e. Type of rontaminant . VtioxiAt pontas te rea v* item OSHA rtgglmoni. Ssetion tfi01000 tanas CJi'IFIDENTIAl DUP 0960555 i DU 040765 IU eo cn o O > LU QC JANUARY 1164 This Page Ray Dec 1>TI RESPIRATORY PROTECTIVE EQUIPMENT S 2H PS 3 d. Concentration of the conuminont - o. Period protection it required I. Location of the contaminated area with reapect lo * touree of reapirable air : tf. Expected activity of the wearer h. Operating charaeteriitics and limitationa of the i.vailable reapiratora . I. Safety regulation! of atate or local government! ^3.1.1 Self-contained breathing apparatua rated for it lent 30-minute service time ihould be uaed for entry into in irreapirable atmoephere. 5.1.2 Self-eonuined breathing apparatua with leaa tnan a 30-minute air aupply ahall be need only for emergency egreaa and net for reacue work or reentry. 5.1.3 Operating time for eelf-contained apparatua ia tiled on moderate work rates. Operating time it reduced fcv inereaaed reapiration required by heavy exertion. 5.1.4 Oniy Mlfontalnad breathing apparatua, cr combination alr-ltne respirator and eeX-contalned breathing apparatua, shad be used In axygntvdnfleinnl atmoapharaa or where the contaminant Is, or might bo, Immadlatoly dangerous to Ilfs. The air in the selfcintained unit of the combination air-line respirator and i-lf-contained breathing apparatua shall be used only for rcreis'In" event the hose-line supply of air ia interrupted. The volume of this exit supply may vary for different ap plications, but shall be ample to allow the worker ail* ficient sir to eaeape from the contaminated area. In any ciae. this aupply shall not be leaa than 3 minutes. Con sideration ihould be given to asing only positive pressure unit*. 5.1.5 Escape masks are uaed only while the wearer leaves e contaminated area. They are approved under Subpart 1. 30 CFR Part 11 and have a half maak fucepieee, or a mouthpiece, here eye irritation ia a cooaideration. a full facepiece ihould be need. For escape or emergency purposes from unknown concentrations of ex tremely haxtrdoue atmospheres (any gas or vapor having a rated lethal concentration LC SO of lets than 10 ppm), a pressure demand ae&eontaincd breathing apparatua or combination pressure demand supplied air respirator with p-easure demand eelf*eontained breathing apparatus ahall b: uaed 5.1.8 Entry Meaka. Use self-contained breathing apparatua with at least a 30-minute air aupply or a com bination supplied air respirator with self-contained breathing air apparatus. Unit shall be of iht pressure demand type. The entry masks ihould b* located outside of the potentielly affected tree in e noneontaminated area and properly identified and protected. 5.1.7 Fife Fighting. Uae aelf.eontained breathing apparatua with at least a 30-minute air supply. Unit ahall b the pressure demand type. - 5.1.1 Schedule 13E of the U. S. Bureau of Minea on self-contained breathing apparatus requires a re maining aeryice.life Indicator or warning for compressed breathing air (except for aelf-raecue). Some equipment now on piant* may not have these alanna. Three can and should be obtained from equipment auppiitra for aj> peratua not so equipped 5.1 J.1 Whan the tievie* is a combination self* contained breathing apparatua and air-line respirator (suppUed-air respirator), either a manual or automatic valve(a) shall be provided to change to the self-contained air supply if the sir-line supply fails, and to prevent the wearer breathing contaminated air from the outside atmosphere. If a manual valve ia provided it ahall ba easily operable and located in a position which is con. renient to the wearer. If an automatic valve is provided a warning also shall be provided to alert the wearer that he is breathing from the self-contained air aupply, (1) when his normal alr-line aupply fail*, or (2) when the selfcontained air supply falls below 95 percent of its hill eon. tainer pressure. A quick disconnect tnd check vsive shall be provided between the apparatus and the air-line supply host to permit ready escape from the area, and to prevent loss of bseathing air from the device or inhaling the surrounding atmosphere, respectively. 8. MEATHINQ AM 11 Both purchased and manufactured breathing air hall maet or exceed the requirements of the specification for Grade D breathing air as described in Compressed Gaa Association Commodity Specification G-7.1-1968*. See table below for Grade D analysis summary, and G-7.1 for details ineluding sampling and analytical procedures. Qm Oj CO CO, Hytbeeirfaona (condsaasd) HjO *1 Odbf resthtni Air Analysis 19 psream mis ta 23 percent nuat 20 ppm max 1.000 ppm mas ' 5 xig/a1 Dew point Ism then the k--am probable wmperewre ta be sresantsred* Balms Free af prsneaancsd adore t Sat StT tar data an dkttt rtebnt psnaHs strata siaqesta a T)w metaary la pnm frataatp sad titpip tf sir (Ua la iht oudL Far laWss refer la "Hai** af Cenprtaed Caws* * AvKiaas trout Cernoresssd Oss Association me. SOO-Pirm A-a. now rbrs, ny tooas Section! primes tn rad ! treat OSHA raputauona. Section ISIO IS* DUP 0960556 DU 040766 S2H Pl} * * ' k-4 i---- - " RESPIRATORY PROTECTIVE EQUIPMENT JANUARY 19M This Pq FUv Doc 147> + >54 6.2 \ rr liable mpplirr -liould lx- chosen. Viit hi* fn ilitir- to dctrnniiir hi degree of control oer thr op^rtlinn If an air compressor ia uaed. it ahould br nnnluhnntrd. If a lubricated compreaaor ia uaed. it muit haw- a rai-bnn monoxide or high temperature (or bothl ainrm Annual contact* ahould be made to aaaure equipini-m ana procedure* have not changed. Ai*o. demand-type air-aupplicd reapiratora and demandtypr self-contained reapiratora operate under negauve prraaure when the wearer inhalea. Since aome inward leakage of contaminant may be poaaibie, theae typea provide much leaa protection. When purchaaing new airuppliedL aelf*conUined or combination type, pressuredemand ahould be specified. 8.3 PmfrraKi*". certified breathing air ahould be purchard from a reliable aupplier. If a choice haa to be made between ce rtified air from a questionable aupplier and un certified air from a reliable supply, the latter would be the recommended chotee. 8.4 Drtei-mine if the air ia provided by eompreaaion or rrconautution (mixing nitrogen and oxygen) and anaiyxe a* followa: ~ Metnod ot Precaralkxi Compreeioo - wpplier ao* no nil cylinders with any (awi other than air. Ovnpre.widn"'- supplier r.U. edindrp. with |i*n otvr than air Rrcon-dtution Anatyelt Recommend Check 10 pereenr of eyiindera from each lot for percent CO and odor Anaiyxe all cylinder! for perctnt O}. Cheek 10 percent of eyiindera fruit each lot for pereenr CO and edor. Analyte all eyiindera for paroant Qj. Chack 10 paroam of cyUndare front aeh lot far perocna CO and ador. I.S In nidiuon a complete analyeii ahould be con ducted periodically to aaaure compliance with table in 6.1. 7. PRECAUTIONS 7.1 An extensive lint of inatruetion! in uae and precaution.! for rich type of reapirator ia given in ANSI Z88.2. Smhr-precaution* arc given in Table 1 under heaHina* of Limitation! and Remarks. . 7.2 The manufacturer' inatruetiona or pracautiona of thr ANSI nundard ahould be paaled with the reapiratory device. 7.3 Alt peraont who may have ooeeston to use respirator)' devleee, or cause them to be used, should be properly trained In their uae. Also, in execution of plant diaaaier plana, proper training in uae of reapiratory protective equipment will aid in the performance of mooth ami aafe reacue or repair operation!. 7A.1 A prtfiure*demand type aelf.eenUined reapir* aloe or air*aupplied combination aelf-oonuined ahould be uaed in atmoapharaa containing eontarainanta which can nul be detected by amell or where apeeial precaution! mutt be taken to prevent the wearer from inhaling any trace of contaminant. In this type equipment a imall poaitive preaaure ia maintained incide the facepiece at all umea. auch that if a leak ahould develop, there would be no leakage of contaminant into the faeepieee. 7.$ a proper eeel cannot be established It the temple her* ot aye glasses extend through tho eeellng edge of lull-taco masks. . 7.6 Contact lenaea aball not be worn with full-face maaka. See S4H. . 7.7 All eyepiecea in full-face maaka approved by the Bureau of Minei will paaa the bell drop teat, but tome piaatie eyepiecea may not paaa the needle drop teat (S4H). Current achedulea of the Bureau of Mine*, however, require that eytpiacea ahail meet the pertinent requiremenu for impact and penetration apocificd in the moat recant ANSI ZS7.1 Safety Coda far Eyo Protection. 7.7.1 Full-face maaka have been developed with aystema for mounting eorreetive lenaea inaide the facepiece. Contact the manufacturer! for aaaiataaoe. 7.S Major problem! in the uae of full-bee maaka at low temperatures are poor visibility and freeting of exhala tion valvei. Antifog compounds can be uaed to coat tha inaide and outside of the eyepiece to prevent its fogging, down to about 32*F. Below 0*F, however, antifog com pound will not prevent severe fogging. Antifog compound! break down and require reapplication periodically. 7.4 A half-mask faeepieee ahould not interfere with tha wesrer'a uae of spectacles or goggles. Proper selection of equipment normally will eliminate any problem of proper fit when using a combination of half.maak faeepiec* and spectacles or goggles. 7.10 Persona required to wear reapiratora must be eleen haven in the area of the reapirator seal. X3 OS CJ o > LU 7.4 A *lix-it negative preaaure occurs inaide the facepiece of face-fitting'air-purifying reapiratora (Table 1C). Care mu*t he taken in obtain an effective seal between the facepiece and face to prevent inward contaminant leakage. omens pnm.ie m rae am imm OSHA meutsMns. Section tsto.134 7.11 Conventional reapiratora do not constitute an ab solute barrier to transmission of speech. The reapirator exhalation valve usually provides a satisfactory pathway for speech transmission over Short dltlaneot in relatively LrOi\' T f Dc.l\T i ? AlDUP 0960S57 i- DU 040767 JANUARY HM tss Tht* Page Hw One 1WI RESPIRATORY PROTECTIVE EQUIPMENT _________________ *2H quint ifUl. Speech tnnamiuion device* ire available, i Caution: cheek for acceptability of tleetncil eimifi. ration for uee in haxardou* ana*, and M05H approval when mounted on rmpirator). >44 Cylinder* ahall be teated and maintained aa preacribed in the Shipping Container Specification Regulation* of tha Department of Tranaportation (*9 CFR. Part 173). <T5 O <3 m + a 7 12 Hoaaa for air atippiy ibotild be aelaeted to reeiit rhcmieala to which they may be ezpoted. . . CANE 1t Oewafli. a oentraliaed maintenance, eleatun*. and torae* nation ahould be uaed to care for rcaptratory ppc tectrve equipment ProMdurM Appllenbto to All Raaplratore 4.1 Inepoetlon. All raapiratora ahall be impeded muunrlv before and after each uae. Thoae held ready for rmrreenry uac ahall b* impeded at leaat monthly and fti-r each uae. 14.1.1 Selfeonuined breathing apparatua ahall tv- imported monthly. >44 Hett Math*. Cheek the blower periodically for proper operation. Cheek boac for wear and tear aftar each uae and dean when neemaary. Keep hoee capped when not in uae to prevent entrance o? (hut or other contaminant*. ~ 144 Air Une Raepiratara. The facepiece ahonld be aerviead after each uae. aa &* ail other reapiratora. The flow eonflroi vmhma ahould be inpeetad after each uae and cleaned and repaired, if aaeaaaery. Air-lint hoee ahould be checked for wear and tear after each uae cod be cleaned when neeeaaary. See S1H on airwuppiy ryttem. 144 MMtaacuara. Monthly impaction ia the moat important phaa* of the maintenance program with thia type of equipment became the equipment ia aeldom uaed but muil alwey* be reedy. n4A Chemical Cartridge Raaplratura 44 Maintenance. Than it ia neeeaaary to replace nm or deteriorated parta, only thoae made apecifieally inr the dance ahall be uaed; and the repair work ahall be erdompliahed by trained peraotmtl. For moat platsta. it it preferable that parta of thie type (wheaaeDtbliea) be replaced aa a unit or returned to the manufacturer or fac tory iraifltd peraonnel for repair. IJJ Cleaning nod Dlslafoetlng. Raapiratery protective equipment, except eanialen end cartridge*, ahould be cleaned and diimfected aftar each uae, tiulaaa aaatgned to individual*, when they ahall be cleaned aa nat aaaery to aaaura a aansury and properly fractioning math. >44 Itaragl. All reapiratory protective equip, meat thell be ttored in e clean, cool, dry place, out of direct aimlight, under eondition* of moderate tan* pci attire. They ahould be located for eaay aeeasaability ami the location adequately labeled if neeeaeary. Reipintare mould ant be atered in aoob place* aa locken or tool bnaa uniem they are ia carrying caaea or banea. 44.1 In plant* with eentnliaed maintenanoa tetiom, cartridge* innwrma* are diacarded after a predetermined period of uae. Haakal Laboratory will eeubUah chamteal cartridge breakthrough timea for pacific tonic aanoapherm on raquaat to aaaiat plant* in eatahliaking urn period criteria. 1444 Replacement ahould be incorporated into the maimenaame end daaaing yiaput. Ia meat mm. the wearer ahould not be roapoaaible for acheduling replace*' meat cartridge* in hi* rmplratoc. Howevar. chemical car* tridgea ahould be changed when the wearer detect* the' odor or irritating effect of the contaminant. >444 Where the anpeetod contaminant haa no odor or irritating tffae*. chemical cartridge rmpirator* ahall not be uaed. >444 Mouthpiece rmpirator* ahall not be uaed for routin* protection, became breathing through the mouth may bypaai the odor or irritation warning of aa ex. pended cartridge. Thoae do not hare NIOSH approval. J Apnetai Prasadurea toe Maintaining, Ctoming, Oiiitotoedna, and Mating Naapiratore >4.1 Mtcnntninnd Brnaming Apparatua. In demand.type (Table IB), tha eyiiader preaaure ahall be chteked monthly and recharged If bekrw rated preaaure (cc netted to 70T). Racharga after each uac. following manufacturer* iDetraction*. Follow aianufactmr'# i traction* on tightoea* toata for aelfconteined reaperttor* ami hydroautie teetiag of ooeapraaiad air cylinder*. Aaaure that regulator and lowpreaaure alarm* are functioning. *cmona onmad In rae are tram OSHA ragtiinion*. Saetion 1*10.13* >44J Particular care ihoold be enerciaed in the atorage of ahareical eartridgm kecmwe they deteriorete if expand to aanmr moiacur* and to gaaeoua air oo Carixidgre ahould net be amced in the are* where the workmen me them. >4.7 Mechanicel ntnr Reapbatnra. Mechanical filter* of tha "throwaway" type ahould be diacarded when the breathing reaiaunae became* bathereocne to the wearer. Some mechanical filter rmpirator* uae reelaan. able filter*. in which caae tha filtara are cleaned when the rmpirator ia being aerrieed. . I'ill'jU'.ii DUP 0960558 DU 040768 63 21 IN O sS I! H s3 h ag sir n 8| if iafitty RESPIRATORY PROTECTIVE EQUIPMENT TIHVIST*D 6SUT4INM0IMM00 KNOmceilNO STANOAJID JAN 1964 OCT I960 DSC 1979 82H Pag* 1 of 9 -ij_(tnard includes requirement* a) tn* Occupational Safety anonaaim Act of 197Q (OSHA) u publtsnad In in* Federal =i*0'itf OSHA infotmation It printed in md. i. scope Thu nandard provide* information for the aeleetion, ues . and care of respiratory protective equipment i respirators). The term "respirator" in thia aundard ia uad inclusively and appliet to stmosphsrs-supplying and air purifying dericea that provide breathable air to the *i irer within the limit* of the equipment, whatever the aourec of air. Thia atandard doea not apply for expoaure to airborne radioactive contamination for which apecial con* aidrration may be neceaaary. 2. GENERAL 2.1 Reapiratora ahould not be used aa a aubatitute for ^equate exhauft ventilation or other engineering control me hods. 2.2 Reapiratora shall be worn at all time* where the atmosphere may be harmful to employs** Nie to unusual condition*, and where work ia necessary in conurnirwted or otygFn-deficient, conflaad arses. 2X1 Then the air ia deficient in oxygen, the symp* torna n|t from increased voliaiw of breathing and ac celeration of puiae rate to unconacioaaness and death, depending upon oxygen coolant and the degree of a per son's activity. UmanMlOUNMM Ig Immediate wtMII man braathaa pura nltragan and daath may toHew in a toes mlitutaa. 2X2 An oxygen deficiency auy indicate a hasard other than inert gaat s-f^ flammability (see 4.4), akin toasrity, or absorption through tk* akin, particularly hydrogen cyanide. Threshold limit value* (TLV's) of air comaminanu anf'givea in SZT. Portable oxygen and toxic-gas datnetan are covered in SST. U Pure *aygen dull out be unsd in open circuit, eeif eoaaaiaed. aaanpbxtogplpiif raapiratare. er in airdaau type iwpnun. 24 A eloeed circuit (rubrtithiug) system recircsiatee sihi.led air. mabet up oxygen and rxiaovc* ondearable facet such aa carbon dioxide. Pure oxygen maet be used wtth then system*. Sytuaaa approved by the National institute for Occupational Safety and Health (NIOSH) which utilise a high-pressure cylinder for oxygen may b* used. Closed circuit oxygen generating type equipment dull not be wed. 24 Each location ahall develop written procedure* covering the aelaetiari, us*, and maintenance of reapiratora. 3. APPROVED RESPIRATOR* 111 Only equipanet* approved by the National Institute for Occupational Safety and Health/Mine Safety Health Administration (NIOSH/MSHA) ahall be wed. 3.1.1 Reapiratora ptirchaeod attar September 30, 1S74 shall be manufactured per quality control plan ap proved under Title 30, Code of Federal Regulation*, Part il. Such equipment will bear an approval label beering the letter! "TC instead of "BM." 1.1.1.1 IneepttofM. Self-contained breathing ap> paratu* approved by Bureau of Minei under Schedule 13 through 13-E equipped with an audible snd^f-servic* life indicator and gaa moaka approved by Bureau of Mines under Schedule 14F are approved for use until further notice provided they (1) were fabricated, assembled, or built under an approval or any modification thereof issued by lha U. S. Bureau of Mince. Department of the interior. (2) were purchased on or before June 30. 1975, and (1) arc anainuieei' in aa approved condition. 34 A liet of tkt naapimon end their manufacturer!, certified by NIOSH may be obtained by requesting HE3P Publication Nn. NIOSH 75-119 plw canulativt sup plement* from: NIOSH Tasting end Certification Laboratory 944 Chcatmit Ridge Road Margamewx, WV 26505 Division of Technical Sarviea* NIOSH Robert A. Taft Laboratories 4616 Coltanbia Parkway Cincinnati, OH 45226 DUP 0960559 Vendor* *n4 imrshsndia* issifnaiisna tr* gissn t* dtacrib* materials and at n* inalud* all assaatakla srsSucrs. Subatitulians by auppliara era ta be ms snip *n saarsvsl *f tbs Iscsl authsnty inirlsnnf fb* us* *f thia standei aueccwuirrta wj m yilii I* T.--:----- ----------- r DU 040769 52H P*g* 3 RESPIRATORY PROTECTIVE EQUIPMENT JANUARY i|u Thlt Pigt Rav Pel 1H6 f 64 3.3 At the prewnl timr. there are no approval achcdulr* fur air-*u|]>iirtl auit*. 3.4 A list of the aevrral tyyw-a of reapiratory protective equipment, tn-lhn<l of operation, u*e. limitations. and remark.* i* given in T*blr 1. For additional infoRnation in thi* regard. rrfcrrnrr ahould be made lo: "Practice* for Rerpiratory Protection." ANSI ZM.2. American National Stamlarda Inatitute, Inc, 1430 Broadway, New York, NY' 10018 Rrpiratnry Protective Equipment, Data Sheet D-444. National Safety Council, 425 North Mlchifan Avenue. Chicago, IL 60611 "Rrapiratory Protection Program, A Manual and Guideline," American Induatrial Hygiene Aociatioti, 475 Wolf Ledge* Parkway. Akron. Oil 44.111 4. USES AND LIMITATIONS 4.1 liaer* of rerpiratory protective equipment ahall have medical approval. 4.2 Tht alr-purlfylng raiplratora; |,t,, eanlitir gat maaici, chemical canrtdga roaplratora, and meehanleat tlltar reaptratera (Table 1C) ahall net be uaed ter reaeua work, or ter emergency work of any natura. Thir i, krtuv there rerpiratora do not aupply oxygen and therefore do not protect againat poaaibte oxygen defieienciet. Other rrnaona for thi* requirement are that: a. Ga* rnaaka are intended for uae with no more than 2 percent by volume of moat toxic gaaea. d. If toy leakage i detected by mr 11, laatc, eye*, note or throat irriution. ,. e. If high breathing reaiatance develop*. 4,4 Air purifying rerpiratora ahould not be uaed in atmoapherea immediately dangerotia to life and health or when the contaminant ha* poor warning propertie*. ex cept for eaeape. 4.8 liaera ahould arlect eaniiterx and cartridge* speci fically approved for the toxle ga* and eonrentration to be encountered. Caniater mark* that bear the label "All Service," "All-Purpoae," or "Univernal" ahould not be uaed for a apeeifie gaa or vapor if a caniater i* available for that apeeifie ga* or vapor. 4.8 Although aelf-eonlained breathing apparalu* or com bination air-line and aclf-contained breathing apparent* have no concentration limit in regard to toxicity, many toxic gate* and vapor* are flammable and the u*er could be expoaed lo a potential Tire or exploaion. The 2-percent concentration limite approved for toxic ga* removal with caniitrr-type maalu ia within the flammable range for come gaaea. Work in atmoapherea in or near the flam, mable range i* prohibited. When the possibility of flam mable atmoapherea exiat*. a cheek ahould be nude with an expioaimeter end permiwable concentration* con firmed prior to entry. Sundard F6J provide* information and instruction* for uae of portable flammable vepor and gat detector*. S CD O CT > U_t Del 4.7 Reapiratory protection ia required for cancer auapret agent*. Refer to OSHA regulation* for apeeifie requiremenu. Section 1910.1000 aeriea, and to 52T. b. Chemical cartridge reapirator* are intended for u-e in *ignifieiintly lower toxic gaa eonerntratlon* than caniater ga* mark*. Limit* vary from 0.08 ptreent maximum to 0.1 percent maximum. 4.8 An uncontaminatad aupply of air muat be aaaured when uaing a hoae maak with blower. . 8. SELECTION 4.3 The following warning aignx require immediate return lo fre*b air: a. Lnroinforuhlr heat in the inhaled air. (A properly open,ting caniater will become warm on ex. pnoirr :n certnin gaaea or vapor*, but a caniater which heenmr* extremely hot indicate* that concentration* above the caniater limit have been encountered.) b. tf nauaea. diatinen* or aign* of distress develop. C. If thr caniater haa a window indicator which -lo-wa die specified color change. 8.1 In aeleeting a reapirator. the following faetor* (5.1 5.1J.1) and Table* 1 and 2 ahould be conaidered. Engineering Dept Report. Aeeeaaion No. 15167 "Reapir ator Selection," alao will provide guidance. a. Nature of the haaard b. Severity of the haaard e. Type of contaminant d. Concentration of the contaminant . Period protection i* required I. Location of the contaminated area with reaped to a aource of respirable air . Ponuww nrwM a* n trwu OSaU neula '`JNFIDENTIAI t**.100B I DUP 0960560 DU 040770 + A' JANUARY 1M4 C L. ..This Pagj Rav Fob HI1 respiratory protective equipment S2M Pag* 3 g. Expected activity of the wearer ' h. Operating characteristic! and limitation! of the available reapiratore .* I. Safety regulation* of atate or local government! 5.1.1 Self<oMained breathing apparatua rated for "a'f leaat 30.mimite aervice time ahould be uaed for entry into an irreapirable atmosphere. 5.1.2 Self-contained breathing apparatua with leaa tlian a 30-minute air aupply ahall be uaed only for emergency egreaa and not for reacue work or reentry. , 5.1.3 Operating time for self-contained apparatua ia based on moderate work rate!. Operating time ia reduced by increased respiration required by heavy exertion. -- .3 . 5.1.4 Only aelt-contained breathing apparatua, or eomblnatlon alr-Nna respirator and aelf-oontalned breathing apparatua, ahall ba uiad In oxygan-daflclent atmotpnaraa or whore the contaminant la, or might ba, Icnmedlately dangeroue to Mia. The. air In the self container! unit of the combination,air-line respirator anil .'jelf-eontained breathing apparatus shall be used only for egress til event the hose-line aupply of air is interrupted. .The volume of this exit supply may vary for different ap plication*. but ahall be ample to allow the worker auffieiem ale to cop* from th eomtminattdi ir. In my case, this aupply shall not be less than 3 minute*. Con- aidrration ahould be given lo using only positive pressure units. 5.1-5 Escape masks are uaed only while the wearer leaves a contaminated area. They arc approved under iubpart 1. 30 CFR Part 11 and have a half mask facepiece, or a mouthpiece. Where eye irritation ia a eonderation, a full facepiece ahould be used. For escape or -mergency purposes from unknown concentrations of ex. .remely hazardous atmospheres (any gas or vapor having i hated lethal concentration LC SO of leaa than 10 ppm), a pressure demand self-contained breathing apparatua or combination pressure demand supplied air respirator with pressure demand aelf-contained breathing apparatua ahall lie used. 5.1.5 Entry Matha. Use self-contained breathing apparatus with at least a 30-minute air supply or a com bination supplied air reapirator with self-contained breathing atr apparatua. Unit ahall be of the pressure demand type. The entry masks ahould be located outside id the potentially affected area in a noneontaminated area tnd properly identified and protected. 5.1.7 Fir* Fighting. Lite aelf-contained breathing .apparatus with at least a 30-minute air supply. Unit ahall be the pressure demand type. 5.1.5 Schedule 13E of the U. S. Bureau of Mines -on self-contained breathing apparatus requires a re* msining aerviee-llfe indicator or warning for compressed breathing air (exeept for self-rescue). Some equipment now on plants may not have these alarms. These can and ^should be obtained from equipment suppliers for ap paratus not so equipped. 5.1.5.1 When the device ia a combination self, contained breathing apparatus and air-line respirator (aupplied-air reapirator). either a manual or automatic valve(a) shall be proviilcd to change to the seif-contained air supply if the air-line supply fait*, and to prevent the -wearer breathing contaminated air from the outside .atmosphere. If a manual valve ia provided, it shall be .easily operable and located in a position v,laic it is enn* venient.to the wearer. If an automatic valve is provided, a warning also shall lie provided to alert tin- wrarri that he ia breathing frmn the eir^.oiilaiued air -o|>piv. ii> alien Ilia normal air-line suppli CuiU, w (i) wl-n Hie rlf- contained air supply fall* la-luw 9.1 prreriu of it, full con. -tamer pressure. A quick iliaruunrrt and ilicik valve -.hall he provided between the apparatus and the audio, mpph lmae to permit ready escape from the area, and in prevent loss of breathing air from the device or inhaling die surrounding atmosphere, respectively. 6. BREATHING AIR 5.1 Both purchased and manufactured breathing air shall meet or exceed the reqirementa of the specification for Grade D breathing air as described in CompreaKd Gat Association Commodity Specification G-7.1. See table below for Grade D analyii* summary, anti G-7.1 for details including sampling and analytical procedures. Oil 2 CO CO, Hydrocarbom (condenaed) HjO 1 reatNng Air Analyst* 19.S pemtnt min to 23.S percent matt 20 ppm max IjOOO ppm max S mg/m1 De point leai then the lowest probable temperature to he entounttrod Balance Odor Fro# of prorwunaed adon t See 54T fee 4u m 4mi vtadinf povuMe at,ya*n iMimn. TVw m nftftry ta pnm fre-sap and at air flow m Ua* sna>k. Far uWw refer ta "KiaAnk tf Gtmpnmti Gw * Avaitaeia tram Comorattad On AMoeiaien me. 900 nrm a*. Htm ton, nv 10091 Pomona prtmad in rad ara tram OSha raguiai'Ona. Saction iiiQ.UK DUP 0960561 IVIINirilJNOO DU 040771 S2H Pig* 4 RESPIRATORY PROTECTIVE EQUIPMENT JANUARY liu Thin P#o# R*v June 111? + ira 8.2 A reliable mpplier ahould be chosen. Vin ht* fartliur* (ci determine hii degree of control over the operation. If *n tir comprr-aaor ii used, ii should be nonlubnratrd. tf lubricated compressor It used. it mux havr carljon monoxide or high temperature (or both) alarm. Anrual cnntirtf ahould be made to aaaure equip ment and proredurra have not changed. Atao. demand-type air-aupplied reapiratora and demandtype aelf-eonuired reapiratora operate under negative prraaure when the wearer inhale*- Since tome Inward leakage of eontiminant may be poaaible, the** type* provide much leaa protection. When purehaaing new airaupplied. aelf-conlained or combination type, pressuredemand ahould be apacified. m r: 6.3 Preferably, crrtificd breathing air ahould be purehaaed from a reliable aupplier. If a choice ha* to be made between certified air from a queationable aupplier and un certified at* from a reliable aupply. the latter would be the recommended choice. 8.4 Determine if the air it provided by eompretaion or reconXitunon (mixing nitrogen and oxygen) and analyxc aa followi: . . MX hod st Preparation C-vnpr--nvt - -trpplier lie, --it fill rytln-fc-rv with any gaww othrr than ar. Ana lyatt Recommend Check 10 percent of cylinder* Trent each lot for ppm CO and otkir. f!rxn|ve4 on - aupplier fill- rvlmlrra with gaaav other than air Reeotwtitntim Analyse all cyiindera for percent Og. Cheek 10 percent of cyiindera from each lot for ppm CO end otkw. Analyat oil cjdindtra for percent 6]. Chock 10 pereent of eyiindtr* Cram emIi 1st fsr ppm CO an4 8.5 In *ddition complete analysis should ba oonducted periodically to aaaure compliance with table in 6.1. 7. PRECAUTIONS 7.1 An eutcneivc list of instructions in use and precautions for each type of respirator i* given in ANSI Z88.2. Some precautions are given in Table I under heading* of Limitations and Remarks. 7.2 The manufacturer'! instruction! or precaution* of the A NSI standard ahould b posted with the respiratory device. 7.3 All perwM who map hmr* oeeaaion to use roeplratory devices, or cause thorn to bo used, shall be properly trained In their use. Also, in execution of plant disaster plana, proper training in use of respiratory protective equipment will aid in the performance of wnooth and safe rescue or repair operations. 7.4 A alight negative pressure occurs inside the facepieec of fare-fitting air-purifying respirator* (Table 1C). Care must be taken to obtain an effective sect between the farepirce and face to prevent inward contaminant leakage. Soman* oom*fln'r*3 ar* item OSXA regulation*. Section 1110.134 74.1 A pmature-demand type lelf-conuinrd respir ator or air-aupplied combination telf-oontained should be ued m atmosphere* containing contaminant* which can not be detected by amell or where apeeial precautions must be taken to prevent the weerer from inhaling any trace of contaminant, tn this type equipment, a small ptwitivr preaaure it maintained inaide the fteepiee* at all umea. such that If a leak ahould develop, there would be no leakage of contaminant into the facepiece. R 7.S A proper coal cannot bo oatabllahod It tho tempi* bar* ol ay# glaitea attend through tho sealing *dg* of tuil-tac* matka. . 7.1 Contact lenaea shall not be worn with full-face mask*. See.SAH, 7.7 All eyepiece* in full-face maaka approved by the Bureau of Minea will pas* the ball drop teat, but some plastic eyepieces may not pea* the needle (hop teat (S4H). Current schedules of the Bureau of Minea, however, require that eyepiece* shall maat th* pertinent require ment* for impact and penetration specified in the moat recent ANSI Z47.1. "Safety Code foe Eye Protection." 7.7.1 Full-face maaka have been developed with system* for mourning corrective lenaea inaide the fecepiece. Contact the manufacturer* for teeistance. 7.1 Problem* in the use of self-contained breathing ap paratus (SCBA) at low temperature* include failure of exhalation velvet due to froxen exhaled moisture and failure of the regulator or low air preaaure alarm. These problem* ean be minimised by: ' Uaing only air with low moisture conttm b. Inatallir* a nosecup in the mask e. Thoroughly drying maaka after cleaning d. Keeping SCBA'a in a warm location between use* (if practical) *. Visually checking preaaure gage* for low air supply I. Following manufacturer's instructions for use in ubfraaxing environment* Antifog compound* ean 1* uaed to coat the inside and outside of the farepirce to prevent its fogging, down to about 32*F (0*C). Below 0*F (~1C*C), however, antifog CONFintMTi'. DUP 0960562 DU 040772 NS JANUARY 1984 "Ml PIP* R*v Jun* 1982 RESPIRATORY PROTECTIVE EQUIPMENT 2H M;t 5 i rnriii'fl18l* will not_ prevent severe fogging. Attlifog (iniipniiiul* break ilnwn and require rcappiirslion j ir- ri* itltr ally. )'.9 \ li*lf.mk (iicrpirpe *lmulii not interfere with Uir I'.rarer'* ue nfapertarlr* nr guggle*. Proper *rlcrtinn nf J^|iii|inirnt normally will eliminate any problem nf prrqirr i ill wiirn tialng it rnmliinalinn nf half-innak facepiece and ' *i-'r ir or guggle*. !,10 I'crann* required In wear respirator* must lie dean ii*'n m the rr of the respirator seal. I.ii l.mivrnliunsl respirators do not commute in .'in' harrier lo tramtmaainn of apcecli. Thr respirator ivliaintmti vilve usually provide* aatiafartory pathway (* .|vrrh transmission over ihOrt dlltincil in rrlativriy e'ulel trial. .Speech lramtni**iun (levied are avsilaldr. Caution: check fur acceptability of rlrrtrioil cioiPi ! fur me in hazardous arras, mil NlOSll approval r.n, niTiuiiird on rospirattir). i 12 I i..r* for air supply should lie srlrrtrd to mint T.. m.i at. to whir It they may be cx|m*cd. ' i'i CARE__, " '. i 1 Oanoral. A rentraliard maintenance, cleaning, and rage station should lie uaetfto care for respiratory i rnimiii- rttuiianent. ijTM . - .. r r ` --.. ^2. .Procaduraa Agptlcabia to~Aft Raiplrateri 'i 8.2.1 Inspection. All r<*pr*ior shall 1m* inspected cutV.inrU l**frc *nl fu*r each we. Those held ready for *&*'***? ur ahall 1$ inspected at least monthly and each use. . ~ 8.2.1.1 5e|fa<?ontainccia breathing apparaius shall tn*pretcd monthly. * * , 8.2.2 Maintenance. When it ia necessary to replace * nrh or deteriorated parts, only those made jprcificilW fir tfie flevier ahull I** uaril; and die repair work shall be arr*nttliahed by trained personnel. Fnr iimwi plants, it is j r' frraltU* that parts of this type (suixtasrinhlie*) lie r--pl<ir*r| a* n imii nr retnrtird to the manufacturer nr fur* t>r\ (ruined |*Tvimrl for repair. . 8.2.3 Cleaning and Disinfecting. Ueapirntnry [*rntrrtive n}ui}*m^ti(, rxrrju eamstcra and rartridfes. s imdil _le cleaned ami <li*infeeted after each use, unless d*2ii vd to imliviikiaia, when they .hall lx* cleaned aa nrr.-.inry to assure a sanitary ami properly functioning iiin*k. _. . 8.2.4 Storage. All respiratory protective equipnient .hall lie atored in a clean, cool, dry place, out of dlrret "silhliglit' under condition* of moderate lem* peraturr. They should lie located for raay acce.aahility nnil the location adequately labeled if nece.ary, Fe.ptrainr. iluiuld tart lie stored in aurh place. 11 lockera or tool boxes unless they are in carrying ease* or iioxei. 8.3 So*el(l Preeaduraa lor Maintaining, Claanlng, Citlntoetlng. and Storing Raaplratora : 8.3.1 Salt-Contalnwd Braathlng Apparatua. In ,)..[,i.ntl-iype {Tahir til), the cylinder pressure .hall lie torked monthly aixl recharged if lielnw rated pressure 'chioni grintao in iao ara iron OSH* taouianoei. Saetion ttlO 13. (rnrrectrd to Tfl'V (21*C)]. Kecharge aftrr each toe, following tnanufarturrr'a iivtructmna. Kullnw manufK< tttrer'a iiwtrurtinna mi tlglitneu te.ta for aelf.eontained rfnfplratora and hydrnatntie te.ting of cnmprewied-air cylin* <ier. A wore that regulator and Inw-prraaure alarms are functioning. ]j | I _ 8.3.2 Cylinder* .Hall he teated and maintained aa preaeribrd in the Shipping Container Specification Regulation! of the Department of Trimiportition (49 CFR. Part 173). * 8i3.3 rtoia Maaka. Check the blower periodically for prnper operation. Check hoae for wear and tear after each ute and dean when neemtaary. Keep hoae capped when not in uae to prevent entrance of duat or other eontaminanu. 8.3.4 Alrd.lna. Raaplratora. The farrpieee ahnuld la* aerrieed aftrr each uae, aa for all other reapiralora. The flow control valvea ahnuld lie inapertrd after each oar and cleaned and repaired, if nee-waary. Aff.line hoar ahnuld be cheeked fnr wear and tear after earh uae ami lie cleaned when treeaaary. See Kill on air-aupply ayalem. 8.3J SalMaaeliars. Monthly inapeetiun ia the inuat important phaae of the maitueiuuiee program witli tin* type nf equipment iiecatwe die equipment ia aeldom uaeii but muit alwaya lie ready. . - 8.3.8 Chamlesl Csrlridgs Rssplratort (.3.1.1 In plant* with cemraiicrd maintenance atatinn*. cartridge* amnetime* are dianirded after a pVeiletermined period nf uae. Htsktll Lsberatory will eiubliah chemical coiiridgr iireaklbmtigh timea for' apcctfic Imie atmoapltera. on request to aa.iu plant, ir eaubliahing uae period criteria. j ' 8.3.S.2 Replacement aimuld lie ineorpe. .. . the miimenanee ami cleaning program. In moat case*. wrarer idinuld not Im rr*|nin*ililr fur wheduling replace* inent cartridge* in hi* respirator. However, rhrmieai car* tridgea should lie dtangeti when the wearer iletecia the mlor or irritating effect of Ute contaminant. -- I.3.S.3 Where the eapected rontaminant hat no mlnr or irritating effect, chemical cartridge rrapiratora shall not be uaed. 1.3.8.4 Mouthpiece respirator* shall not be uaed for routine protection, liecauae breathing through the mnudt may bypass the mlnr or irritation warning of an eg. funded cartridge. These do not have N10SII approval. S4.8J Particular care should lie exercised in the norsge of chemical cartriilgra liecauae they deteriorate if exposed to exec* moisture and to gaaem* air eon* taminant*. Cartridge! should not be stored in the area whara th* workman uae thain. . 14.7 Maehanieal Flflar Raaplratora. Mechanical filter* of the "throwaway" type ahoulil !* discarded when the breathing reaiatanrr Imcome* tiotheraiimf to the wearer. Some mecltauical filter reaptrator* ue recleanable filter*, in which caae die filter* are cleaned when the respirator ia being aervieeil. ' . DUP 0960563 DU 040773 S2 M Page RESPIRATORY PROTECTIVE EQUIPMENT ____________ _________________ _______________ JANUARY 1|$4 This Pag* R*yS*pI 1ITI tO' TAIL! 1 " TYPES OP RESPMATORY PROTECTIVE EQUIPMENT (CONf0 ON PAQC TJ Table 1A - Alr-PuppMed SuN Mt nod oi Operation Air supply from suppiied-air breaming apparatus. Saa S1H on air-distribution sysiam. UM Ooereting or raasir work wnare there is aipotura to suesiancas mat ara irritating or eorroanra to the skin and mucous membranes. Out wnara ma atmosphere is not immediately dangerous to life If immediately dangerous to life, tne respiratory equipment should Be provided as In S t 4 and the air-supplied suit snouid be kept witn a slignt positive pressure In sny ease the air 'i supply should net be lass than 18 minutes to allow the worker sufficient air to escape from the contaminated area. A body hameae is required to handle me hose line and me life line, which always snouid be worn as a rescue device Helper (weanng similar air-euppiied suit. Body her. nass. and life line) should be assigned with no other duties than to obaeive the man m the nasardous area, attend me iiie line and m emergency, ask for help and be ready to rescue tne worker (See S18Q) Umnitom ; The weanng of an impervious suit for any extended period is extremely fatiguing and ' dangerous unless it is well ventilated. The suit must be impervious to the substance an. countered. With the longest hose length for which use is intended assembled to me respirator, and the lowest inlet pressure intended for operation introduced to the air-euppiy hose, constant how units must deliver at least e efm measured at tne facepiece The exhalation resistance at Si liters per minute snail not exceed i men of water. When hairnets or hoods are used, the same requirements must be met except that the flow rate must be at least 8 dm For both types of assemblies with the highest inlet pressure and shortest hose length, the maximum flow shall not excesd IS dm. nmarts No NIOSH* approval. For additional information, see Fleming. A. J.. O'Alonso. C. A., and Zapp. J. A , "Modern Occupational Medicine." Chapter 7. "Protective Clothing tor the Chemical industry," Lea and Febiger. Philadelphia (18801. A Ranqua-Hitsch vortex tube** wont as a portable refngerator can sattstactonty cool com. pressed air tor personnel weanng Industrial protective clothing. The vortex tube Is light and small, and can be strapped to tne belt where it does not interfere with pnysicai movement. The tube operates on 20 to 23 cfm of compressed air at 80 to 100 psi and delivers IS to 18 etm ot air cooled SO to 60*F oeiow the mist sir temperature. The tube can be reverses end used as a heater. * Nations* insi-iwts tor Oceup*enst * Aviao*s gneo ComoaPy O io Houston TX 77Q0* ana Hcantt, u %. 0*tt of Him. Education ana wwtaro l. _. , t' 4 " .. - - * 's r / / / i t ti L * \ \ . , X.% > s [ * . -'CONFIDENTIAL Pl'JlIjJ DUP 0960564 JANUARY 19*4 67 YW* ^*9* ** 0t yPO RESPIRATORY PROTECTIVE EQUIPMENT in 11 I "Tpfl i illliiliiilfl IliHi Hill & ifiiHi! y! 1 I2K A9 7 in ' K ii?!i i, hllilil1h !1 iJ J" Ui iEl"I *JlU !ii II i; If li'iUliJllll ,.11 $ in I 111 ij ilfjHsjjL !!i i] mu; i i ifiii fi i i'.'lllilii! Is Cf Io m n S ckcuil oayorm f W fiUoq t f p l cyulpmn4 is not IppiOvPd lor u l* li 1 <T5 O O' ijii in u* ill 8' iff! Slip!, 111! Ii!ll (i Ijlj! *1 ilk !! <?* si i III U\ a hi I!!' ill I! ii 1 Finiwie DUP 0960565 DU 040775 68 DU 040776 feBtta jiuiiUSaafBii^ DU 040777