Document obgz5N4xzQnJRx9YnaGXzbZ3

PLAINTIFF'S EXHIBIT RULES AND REGULATIONS 208 10503 '>(> Strength 0/ step supports. When manlift will be stopped before the loaded <d` Operating rules--(1/ Proper use ubjected to a load of 400 pounds applied step has reached a point 24 inches above of manlifts. No freight, packaged goods, at the approximate center of the 6tep. the top terminal landing. pipe, lumber, or construction materials step frames, or supports and their guides (ivj Electrical requirements. id1 of any kind shall be handled on any shall be of adequate strength to: Where such switches open the mam manlift. iai Present the disengagement of any motor circuit directly they shall be of the ie> Periodic inspection--(1) Fre tep roller. multipole type. quency. All manlifts shall be inspected ` ib) Prevent any appreciable misaline- (b) Where electronic devices are used by a competent designated person at ment. - they shall be so designed and installed intervals of not more than 30 days. Limit (c) Prevent any visible deformation of that failure will result in shutting off the switches shall be checked weekly. Man the steps or its support. power to the driving motor. lifts found to be unsafe shall not be oper <vii) Prohibition of steps without (c) Where flammable vapors or dusts ated until properly repaired. handholds. No steps shall be provided un may be present ail electrical installations (2) Items covered. This periodic in less there is a corresponding handhold shall be in accordance with NFPA No. spection shall cover but is not limited to above or below it meeting the require 70-1968 National Electric Code, require the following items: ments of subparagraph (4) of this para ments for such locations. StpS. graph. If a step is removed for repairs id) Unless of the oil-immersed type Step Fastenings. or permanently, the handholds immedi controller contacts carrying the main Ralls. ately above and below it shall be removed motor current shall be copper to carbon Rail Supports &n<l Fastenings. before the lift is again placed in service. (4) Handholds--(i) Location. Hand holds attached to the belt shall be pro vided and installed so that they are not less than 4 feet nor more than 4 feet 8 or equal, except where the circuit is broken at two or more points simultaneously. (6) Emergency Stop--(i) General. An emergency stop means shall be provided. Rollers and Slides. Belt and Belt Tension. Handbolders and Fastenings. Floor Landings. Guardrails. Lubrication. , inches above the step tread. These shall (ii) Location. This stop means shall be Limit Switches. be so located as to be available on the within easy reach of the ascending and Warning Signs and Lights. both "up" and "down" run of the belt. descending runs of the belt. HIumination. (ii) Size. The grab surface of the (iii) Operation. This stop means shall Drive Pulley. handhold shall be not less than 4 & inches in width, not less than 3 inches in depth, and shall provide 2 inches of clearance from the belt. Fastenings for be so connected with the control lever or operating mechanism that it will cut off the power and apply the brake when pulled in the direction of travel. Bottom (boot) Pulley and Clearance. Pulley Supports. Motor. Driving Mechanism. Brake. ' handholds shall be located not less than (iv) Rope. If rope is used, it shall be Electrical Switches. 1 inch from the edge of the belt. not less than three-eighths inch in Vibration and Misalignment. (iij) Strength. The handhold shall be diameter. Wire rope, unless marlin- 'Skip'* on up or down run when mounting capable of withstanding, without dam covered, shall not be used. step (indicating worn gears), , age. a load of 300 pounds applied paral (7) Instruction and warning signs-- (3) Inspection log. A written record lel to the run of the belt. (i) Instruction signs at landings or belts. shall be kept of findings at each inspec (iv) Prohibition of handhold without Signs of conspicuous and easily read style tion. Records of inspection shall be made steps. No handhold shall be provided giving instructions for the use of the available to the Assistant Secretary of without a corresponding step. If a hand manlift shall be posted at each landing Labor or his duly authorized represent hold is removed permanently or tempo or stenciled on the belt. ' ative. ' rarily, the corresponding step and hand hold for the opposite direction of travel (o) Such signs shall be of letters not less than 1 inch in height and of a color (Sooaci: ANSI A90.1--1969 Safety Code for Manlifts.) shall also be removed before the lift is^ having high contrast with the surface on again placed in service. * which it is stenciled or painted (white or 1910.69 Sources of standards. (v) Type. All handholds shall be of yellow on black or black on white or Sec, Source the closed type. _ gray). '910,66 ANSI AI20.1- 1970 Safety Code Tor (5) Up limit stops--(i) Requirements'. (b) The instructions shall read ap Powered Platforms for Exterior Two separate automatic stop devices proximately as follows: , Building Maintenance. shall be provided to cut off the power and apply the brake when a loaded step passes the upper terminal landing. One of these shall consist of a split-rail switch mechanically operated by the step roller and located not `more than 6 inches above the top terminal landing. The second automatic stop device may consist of any of the following: Faoe the Belt. Use the Handholds. To Stop--Pull Hope. (ii) Top floor warning sign and light. (a) At the top floor an illuminated sign shall be displayed bearing the following wording: ' "TOP FLOOR--GET OFF" 1910.67 1910 68 ANSr A92.2--1969. American National Standard for Vehicle-Mounted Elevating and Rotating Work Platforms. ANSI A90.1-1969 Safety Code for Manlifts. .1910.70 Standards organizations. Specific standards of the following or ganizations have been referenced in this (a) Any split-rail switch placed 6 Signs shall be in block letters not less subpan. Copies of the standards may be inches above and on the side opposite the than 2 inches m height. This sign shall obtained from the issuing organization. first limit switch. be located within easy view of an ascend American National Standards Institute. 1430 <b) An electronic device. ing passenger and not more than 2 feet Broadway. New York. NY 10018. (c) A switch actuated by a lever, rod, or plate, the latter to be placed on the "up" side of the head pulley so as to just dear a passing step. (ii) Manual reset location. After the manlift has been stopped by a stop device it shall be necessary to reset the auto matic stop manually. The device shall be so located that a person resetting it shall have a clear view of both the "up" and ' down" runs of the manlift. It shall not 36 Possible to reset the device from any step or platform. ni' Cut-off point. The initial limit stop device shall function so that the above the top terminal landing. (b) In addition to the sign required by subdivision (a) of this subdivision, a red warning light oi not less than 40watt rating shall be provided immedi ately below the upper landing terminal and so located as to shine in the passen ger's face. (iii) Visitor Warning. A conspicuous sign having the following jegend--AU THORIZED PERSONNEL ONLY--shall be displayed at each landing. The sign shall be of block letters not less than 2 inches in height and shall be of a color offering high contrast with the back ground color. Subpart G--Occupational Health and Environmental Control 1910.93 .Air contaminants. (Gases, vapors, fumes, dust, and mists.) a) Exposures by inhalation, inges tion. skin absorption, or contact to any material or substance (1) at a concen tration above those specified m the "Threshold Limit Values of Airborne Contaminants for 1970" of the American Conference of Governmental Industrial Hygienists, listed m Table G-l, except for the American National Standards listed in Table G-2 of this section and CEDERAL REGISTER VOL 36 NO 105--Sit'JRCA- maV 29 '?71 2192 * }Sr 10504 RULES AND REGULATIONS f- except for values of mineral dusts listed Tablx G-!--Con. Tu-ls G-I--On. in Table G-3 of this section, and (2) con centrations above those specified m rubstan ce p.pjn.* SlibStAflC* P P a.* Table G-l. G-2, and G-3 of this section, shall be avoided, or protective equipment shall be provided and used. (b' To achieve compliance trith para graph (a) of this section, feasible ad C Chloroacetaldebyde.............. . o-Chioroacetopnenone (pbertacylchlonde)................ . Chioroienrene (moaocn.oro- bentene*.................................. . o-Cbiorobenxylidene 1 0 05 75 - 3 03 350 Z"~" --?tm............... I;..-:;; isomers.-- ?t:-....... ............................ Skiz_................. E'<r.::.Mtoiutoe--Skin.................... Dicxane Dietbyfcnc dioxide'-- ministrative or engineering controls must malononttnle (OCBM).......... . first be determined and implemented in Cblorobromomelbane................ 2-Chloro-l.j-buUdiene, see 0.05 0 4 100 Dip.neny!.................................... a2 Dipcery. amice........................ all cases. In cases where protective equipment, or protective equipment in addition to other measures is used as the ChJoroprene.......................t... CbJorodiphenyl (42 percent Cblorinei--Skin....................... ChJorodiphenyl (54 percent . Dipbesvimetaane *.u$ocyaaaie ise* Methyiene bispbenyi 1 isocyanate (MDI).................... D:*'-opylcn' glycol methyl method of protecting the employee, such Cblonne)--Skin....................... 1-Chioro.2.3-eporyprop*ne, see a 6 ether--Skin............................... Di-?*c. occvi phthalate (Dl-3* protection must be approved for each Eplcblorhydrm........................ . etnylheryjphthalate)............... specific application by a competent in 2-Cnloroeibanol, see Ethylene chlorobydrin.................... . Er.dosullan (Tblodan <$)-- , Skin................. ............--........ dustrial hygienist or other technically Cbloroeth'ylene, see Vjnyl cborjde...................................... Ecdrin--Skm.............................. Eoicbiorhydnn--Skin................ qualified source. * C Chloroform (trlchloro* methane)................................. . 50 EPN--6km................................. . 240 1.2-Eporypropaoe, see Table O-I l-ChJorol*nitroprop*ne.......... .. Cbloropicnn.............................. . 20 ai 100 a? Propyleneoxlde.......................... 2.3-Epory-l-propanol, see Cbloroprene (2-chioro-l,3- Glycido].................................. . butadiene)--Skin...................... 26 90 Ethanethiol. see Ethylmer- Chromium, sol. chromic. captan....................................... chromous salts as Cr--....... 0.5 Erbaoolanune................ . 3 Abate.................................................. --Acetaldehyde............................... 200 Acetic acla.................................... Acetic anhydride......................... 10 5 Acetone......................--............... 1.000 Acetonitrile.................................. 40 Acetylene dlchloride. see l, 2- Dlcliloroetbyiene.................. ..................... \tyleae tetrabromlde........... 1 Acrolein........................................ d1 Acrylamide--Sirin.......................................... Acrylonitrile--Skin..................... 30 Aldrin--Skin................................................... .Allyl alchol--Skin------------ 2 Ally! chloride......................--- C AUylclycidyl ether (AGE). .1 10 Allyl propyl disulfide................. 2 2-Aminoetbanol. see Ethanol* amice...................................................... 2-Amlnopyrldjne......................... 0- * "Ammonia................................. W 15 360 25 20 2.400 70 U 0.25 as 45 0.25 5 3 45 12 2 35 MetaJ and insoL aalti............... Coal tar pitch volatile! (ben* sene soluble traction) anthra cene. BaP. phenanthrene, aendine, chrysene, pyrene.... Cobalt, metal fume and dun... Copper fume................................ Dusts and Mists......... ............. . Cotton dust (raw)........................ Crag^ bn-bldde.......................... Cresol (all isomers)--Skin...... Crotonaldebyde......................... Cumene*--Skm.............. -............ Cyanide (a* CN)--............. Cyanogen................................... Cyclohexane................................ Cyclobexaool............................... Cyclohexanone............................ Cydohexeoe_____ Cyclopentadieoe.....................-- 2.4-D.............................................. 5 2 60 100 300 60 60 300 75 0.2 0l 0.1 1 I 15 *6 245 6 'Two'"' 200 200 1.015 200 10 2-Ethcryethanol--Skin.............. 200 2-E*horyetbylacerat (Cello- solve acetate)--Skin-------------- 100. Ethyl aoetate........................... -- 400 Ethyl acrylate--Skin................. 25 Ethyl alcohol (ethanol)........ --. 1.000 Ethylamine___ _--.................... 10 Ethyl sec-amyl ketone (6- metbyl-3-beptanoae)............... 25 Ethyl benzene........................ 100 Ethyl bromide...........................- 200 Etbyl butyl ketone (3- Heptaoooe)............................-- Etoyl chloride................... . 1,.000 Ethyl ether.................................- 400 Ethyl formate................ ............. 100 Etnyl mercaptan....................... - at Ethyl silicate................... 100 Etbyleoe chlorobydrln--okm.. 6 Etbyleoedlamine....................... - 10 Etbyleoe dibromide, see U2* Ammonium suifamaie (Am* mate1............................................................ n*Amyl acetate............................ 100 sec-Amyl acetate......................... 135 Aniline--Skm.............................. 6 Anbidme (o. p-isomers)--Skin................... - Anllmonv and compounds as Sb)............................................-.......... A.VTU (alpha naphthyl thiourea)....................... ............................... Arsenic and compounds (aa As)..................... Arsine................................................. 0*05 Ailnpboa-metbyl--Skin.............. -..............- Banum (solahle compound!)....------ ...... 15 525 650 19 as as . as aa2s as 0.5 DDT--Sinn................................... DDVP. see Dichlorvos................ Decaborant--Skm__.................. Demetoo--Skin......................... Dlaoetooe alcohol (4-hydroxy* 4*methyl*2*peatanone).~......... 1,2-diaminoethane, see Etbyleoedlamine.............-........ Diaaomethane......................... -- Dlbormne............. ....................... DibQtyl phosphate..................... Dibutylpbthalate............-............. C Dlchlocoacetyleoe_............. C o-DIchlorobenzene.._........... a: ai l ai 60 1 0.3 ai a4 ai 5 S 0.4 300 Dlbromoetbane........................ Ethylene dlchloride, see 1.2* Dichioroethane......................... . C Ethyleneglycol dlnicrate and/or Nitroglycerin--6fcta... Etbyleoe glycol monometbyl ether acetate, see Methyl cellosolve acetate....................... Ethylene Inline--Skin............. -- 'EthyleDe oxide............................ E thyUdine chloride, see 1,1- Dlchloroethane.......................... N-Etbylmorpboline--Skin...... Ferbam................ *........................ a2 as so 20 p-Bentoqumone. see Quinone............--............................. CKDIeblocobaaeDe, 76 450 Fr-rovanadiom dust.................... Benzoyl peroxide...--. Dlchlorodifluorometbane.......... L, 000 4.950 Fluoride (as F).............................. Benzyl chloride.... ........ 1,3-DlchIoro-S.S-dlmethyl Fluonne...................................... - 0.1 Biphenyl, see Dtpbenyl___ b yd an tom................ . 0.2 Flaoromchlorometbane--.... 1,000 Blspbeool A. see Diglyddyl l.l-Dichloroethane...................... ether.................................................................................. 1,2-DichJoronhyleoe. Boron oxide. 15 C Dlchloroetbyl ether--Skin... 100 400 Formic acid............ ................... 6 7Q900 Furfural--Skm............. ......... Furiuryl alcohol.......................... 5 60 Boron tribromide............ 1 10 Dichiorometbane. see Glycidol '2,3-Epoxy-l- C Boron tnfluonde......... Bromme........... . 'Bromine peotafloonde. l 3 Methylecechloride................. propanol)-............................... 50 0l 0.7 DldJloromonofinoromethane... 1,000 4.200 Glyco. moooetbyl ether, see ai 0 7 C 1.1-Dichloro-l-nltroethane... 10 td I'-Ethoxvetbanol--..................... Bromoform--Skm. 0.6 5 1.2-Dichloropropaoe. see Gutbioo. see Axlnphoa* Butadiene (1, 3-bntadleue)........ UOOO 2.200 , Propyleoedicbloride......................... methyl........................................ ButaoethioS. see Butyl mer* Dtcblorotetrafluoroethaae......... i, 000 Hafnium........................................ captan........................................................... .................. Dlcblorvos DDVp'--Sric.. r-Butanone... T-Botory eth^ao. (Buty? Cei- Ioro)v<"--Skm ......................... 200 50 590 Dleldrln--$tm. DifthyiamiD*............................. 25 240 Dietbysaroino ethanol--Skin__ 10 L 25 75 t*> 500 Hct3cnsoroeihan--5kin----- -- 1 B exacmorocspntnalene--Skin.... Bury, acetate m-buty) aceiale/. 150 710 *C Diethylene triamine--Skin. 10 Hexane 'n*beiane>...................... 500 -olBucyf acetate........................ 200 950 Diethylelh^r. see Etbyl ether..., 100 vn-Buryl acetate........................ buty. aicoco*................................ K'-Buryl alcohol........................ ''J-Butt! alcohol....................... 200 100 150 100 950 Dlflaorodibromomethsoe-........ 100 300 C Diglycidy; ether (DOE)........ as 450 Dibydroryuenzeoe. see 300 Hydroqusr.one........................... Beroae Methyl isonu^l a $ c^ton-...................................... 100 sec-aery, acetate........................ 60 KvaraziTj#-- Skin........... ............ l " Bjrriamir.*--Skin.................. 6 *' Vrt-Butv: chromate fas ^rO; --Stir............................................... 'Bujv. c^vcjdv- ether 3GE'.. 50 15 01 370 DnsobuTy! ketone....................... Dusopropy lamme--Skm....... Dimethorymethane s^ Metnyfa...................................... 50 Hviroces bromide..................... 3 .V C Bvarocen chiorlde............... 5 12* : i*. :vjLiir--Sktih........... 10 Hvorj>t jvroiid................... m^rCtfUiiUi....................... 0.6 l 5 Dimethy: aceumtac--Skm..... AS Hvorocen seieaide...................... :-:crt*&u:ylto.uene..................... 10 'ii^.um anenatc................... .............. . 60 Dimethy.amme......................... l Dimethy.aminobentene. see li Ryuroqumone............................. In ............. ........................... "aicium ctsde............... ................................ `'CoripLo: ^yntneiic.............. 2 f ar**ary. S**c;s$ ...................................... . artx.- b.jrk.................................................... ' 5,000 * :: ''x fc....................... 50 5 ....... b" 35 9.000 Xyj.jen*-. . .......... Dm^tr-yia:....;}* N-ctmetn?r ar.:.r --^cm................... Dimet',.\.:***r:t#ne. see Xr Ditr-tsj. 1 .4jibromo*2..*df c` "> . r .'<pr.3t- Indium and compounds, is In.. C Iodine............... ................... Iron ov:de fume........................... Iron <a!t. joloble as Fe............ I>oam'. sretate........................... Uoamv. a.<*r>QC>............. :............. )(. 1u r.-.. i i.p.w.y. ctide...... - <JlCX,d*',.~ ............. "Tt *':r:fluor;de........... T >< : a* end of table 1 at 0.1 Dir.r!*.r,,. ....... f'* r.eptAaooi ve jt\. k*jcn^... . . .. C 3 1 i-I'm.eT.y.-v :raxme--Scm... u4 i.<oi>u;i. (uuolo............................ Hspnorone.................................. l^op'opy, acetate........................ l?opropv. aiconol......................... Isoprcpj i&mfne............................ 250 400 6 * l as Lt 360 1 10 ai 19ai as 6 740 640 1,400 100 U900 IS 130 436 690 236 2.600 1,200 300 1 650 1 if 1 90 94 16 1 2.6 0.2 5,600 20 300 160 2,000 10 0. 1,800 410 410 300 1 10 7 11 1.4 02 450 l 1 10 1 5>5 37'>*i, 30U 140 60 12 FEDERAL REO'S'eF v2. 36 SO 105--SATURDAY. MAY 29. '-971 2193 .to ASL* G-I--Coo. RULES AND REGULATIONS Tabic G-I--Con. Table G-l--Con. 10503 Subtree P p.m.* mg./M* * Substance mg Ms * ?ub*:aDor ,<y*ror,`(ether........................... |.v* rupj f.ycidyl ether (1GE,. ..... ..............--......................... ^ sr.'enate.............................. 500 50 a5 ;... jjmc--Selt................................. bxonat......................... L.P c. (liquified petroleum 1.000 M.iu:;* uum oxide fume............... ,.;lico--Skm...................... annvande................. .-.*- ..... c.'si*' C M.mgauese and compounds. M00 240 0.9 00..515 acis 1.600 15 16 1 Sulfuric acid................................ Suite? moDochionde................... Sulfur pentafteonde................... SulteryJ fluoride.......................... Sysiox see Demeton --......... . 2.4.ST............................................. Tantalum.................................... TEDP-Skm............................... Telionum...................................... Tebunum bemf nondt.............. TEPP-Skir................................. C Terphenyls............................. 0 02 1 10 02 0: 0 05 Tr.r-'t-i: W-.tene.................... -- 120 2 (t>-Trmis,opoeuo.. see Picnc acid.............................................................................. . : 4 o-TnairrophenylmetoyN see Tear-........................................ .......... Tnmtroioiueoe-- Stic........................ -......... 1.5 Triortnccresj I phosphate............................... CJ Tr.pnenvl phosohaie................ ..................... 3 Tuhriou asd compcur.ds. as \\ 5(.:uM........................................... i is Mr.......................................... Me*;*' i .e..................................... ""5i..... MtK.ancthioi, see Methyl mercaptan.................................. Mi/Jioi'tbior................................. jAjtinorptbanol. s Methyl teliosolve................ .......... .......... Methvl acetate..............-- 200 Meihyj acetylene (propyne).... L 000 Methyl acetyiene-propadiene mixture (MaPP)....--. 1,000 Methyl acrylate--Stln_________ 10 Methyl*! (dixnetboTymethane).. 1,000 Methyl alcohol (met-uano*)--. 200 MethyUmlne................................ 10 Methyl amyl alcohol. see Methyl isoburyi carbmol______ .Methyl isoamyl ketoae__ ___ _ 100 6 100 610 1.650 1.800 35 3,100 2b0 12 475 l,1.1.2*Tetriicnioro-?.2*d^uoro* ethane...................................... 500 1.1.2.2*TetricfcIor^l.2*di2uor<h ethane.-.................................. 500 l.l,2.2*Tetr3Chloroethane*"Eka 5 Tetrachioroethylene. see Per* cnloroeuiyleoe........................................... Tetraciiioromethane, see Carooa tetrachloride.............................................. TetrachloronaphtbaJene--Skm--------------- Tetraetlivi load (as PL.--Sk;n................. Tetrahydrofuran......................... 200 Tetratnetbyl lead (as Pb/-- Skin--......................................................... Tetramcthy! succmonltrUe-- Skm........................................... 05 Tetranitromothane..................... 1 Tetryl (2,4.G*irntrt.ohenv- 4.170 35 / 0.100 590 /a 150 3 Turpentine................................... 100 M l radium tcarura!* ?&i and insol. compounds a? T.......... ...................... 0.2 C Vanadium: V*Ojou>t....................................................... 05 VjO*lame..................................... ................ ai Vinyl uenxene. see Styrene................................................. *C Vinyl chionde...................... 600 l. 300 Vinylcyaaide. see AcrylouJtnJe.......................................... Vmvl loiuene............................... 100 Warfarin........................................ o1 Xyiene (xylol).............................. lou ^ Xylidme--Skm............................ , Yttrium................................... i Zinc cblonde fume....................--.................. i Zinc onde fume................................................ 5 Zirconium compounds (as Zr>....................... 4 Methyl (n-amyl) Jcetone (2* methylnitrammei--ekm............. _......... Heptanone)................... ........ C Methyl bromide--Skm.......... 100 20 465 Thallium tsotubk com* SO pounds)--Skm as TL-............................. 0.1 337i) Addition. Methyl butyl ketone, see 2* Thiram........ .................. .......................... 5 Parts of eaper or pas per million parts of contami* Hexaoone...................... --........... Tin (inorganic empas. except nated air by volume at 25 C. and 760 mm. Hg pressure. Methyl cebosoive---Skin__.--. Methyl cellosolve acetate--Skin 25 25 80 SnH< and SoOt)......................................... 120 Tin (organic empds;..................................... Approximate milligrams of particulate per cubic 0 1 meter of air. Methyl chloroform...................... Methylcyciohraane........ ............. Mcthylcyclobexanol.................... G-Metbyi<*ytlobeianone--Skin.. 350 500 100. 100 1.900 2,000 470 460 C To!ufne-2,4-dusocyanstc........ 0 02 o-Tohudine--Skin..................... 5 Toxaphene, see Chlorinated camphene.................................................... a 14 (N*o footnote "c" is osed to avoid confusion with ceiling value notations.) An atmospheric concentration of nor more than 0 02 p.puE.. or personal protection may be necessary Methyl ethyl ketone (MEET), Tnbutyl phoaphate_______ ______________ Uj avoid headache. see 2-Buunone........ .................... Methyl formate..______ ........ 100 Meibvl iodide--Skm................... 5 1.1.1`Trichioroethane see as sampled method that does not collect vapor. 250 Methyl chloroform...................................... 1 For control of general room air, biologic monitoring 28 b 1,2-Tnchloroethane--Skin ... IQ 45 is essentia) for personnel control. Methyl isobotyl carbinol--Skin. 25 100 Paralbion--Skm................. ........ ................. 0.1 Methyl lsobutyl ketone, see Pentaborane..................................... a005 a oi Table *G-2 Hexone.......... ........... Methyl isocyanate--Skm______ Methyl mercaptan.------------Methvl methacrylate.................. a 02 0.5 100 0.05 1 410 Penucbloroaaphth&lene--Skin.--______ ... Pentachloropbenol--Skia______ Pentane...................................... 500 2-Penlanone................................ 200 0.5 0.5 1.500 700 6-h.our time weighted average .Methyl propyl ketone, see > Fercnioromrihyl mercaptan.--. L`. 1 as Benzene 1237.4-1969)_______ lOp.pJn. C Methyl silicate......................... 4 C a Methyl rtyrene___ --............ 100 Perchloryl fleonde..................... 3 30 Phenol--Skin.................. ........... 5 480 p*Pbenylene diamine--Skin..-- 13 5 in al Beryllium and beryllium compounds (Z37J29-1970) _ 0.002 mg./Td?. C Methylene bopbenyl Isocyanate (MDQ.................... aos Phenyl ether (vapor!................. a: Phenyl etber-bipbenyl Cadmium dust (as Cd) (Z37.&-1970) ........................... 0.2ag./M. Molybdenum: Soluble compounds-- Insoluble compounds___ --... Monometby) aniline--Skin-___ mixture (vapor)................ ...... 1 Pbeoylelhyiene, sec Styrene.--,.. . 15 Phenyl glyefdyl ether (POE)... 10 9 Pbenylhydrmwoe--Skin_______ $ Cadmium fume (as Cd) 0a0 (237.5-1970) _____________ O.lzng.'M1. Carbon disulfide (Z37.3- C Monomethyl hydrartna SUn_________ ______________ Morpholine--Skin....................... Naphtha (coalui)....................... 20 100 0.3$ 70 <00 Fbosdnn (Mevmphos <$, )-- Skin.......................................................... . Phosgene (carbonyl chloride)... 0.1 Phosphine....... -......................... 0.3 1968) .....--_____________ 20 p.p.m. ai 0.4 Carbon tetrachloride u4 (237.17-1967) ____________ 10 p.p.m. Naphthalene....-------- ------..NV.ke! carbonyl.................... -- 10 a cm 40 Phosphoric acid........................................... a 00; Phosphorus (yellow)..........--.................... . 1 Ethylene dibromide ai (237.31-1970) ______ _____ 20 p.pun. Nickel metal and soluble cmpds, as Nl....--__ ______ -- Nicotine--Skin...._________--. N'tmc acid. Phospnoru# pentachlonde..................... --. 1 Phosphorus penlasulfide............................ as Phosphorus tnebionde.............. a5 Phtbahc anhydride--................. 2 Ethylene dichloride i 3 (237.21-1969) ..................... 50 p.pjn. 12 Formaldehyde Nunc oxide...................... ..... 25 30 Picnc acid--Stir.,........ ..................... . C 1 (237.16-1967) ____________ 3 p.pjn. ?* NivoatuUne--Skin .................. Xnroheiueoe--Skin.................... j>*Vstrocblon>benxeoe--Skin......... Nuroetbane.............................. -- 1 1 100 6 Prral ^ (2-Pir*lyM,3- 5 lndandione................... ..................--... 1 310 PlPatitn-u..m....(.S.o..l.u.b..le...S.a-lt.s...a.s.... ............. Hydrogen fluoride a l (Z37J28-1969)____________ a 002 Fluoride as dust 3 p.p.m. Nitrogen dioxide........................ Nitroeen tnf.oortd*............. Njtrog.ycenn--atos__________ _ N (.."`methane........................ . 5 10 a2 100 9 Pr&pargyi alcohol--Skin.......... 1 3 2 r..Propy'. acetate....................... Propyl alcohol......................... .. 220u00 250 o-Propyl rjtrate-.................... 25 hso 500 llu (Z37.2&-1966) ____________ 2.5 Lead and its inorganic com* pounds (237 11-1969).... 0.2 mg 'M*. JA'.'TT'rronane............ .. 25 VO Propyiene dichionde................ 35: Methyl chlor.de ; Nitr^pfonane................... . Nr.rctoiuene-- Skin_______ ____ N'.votnchlcromethaae, see Ci^oropicnn.................................. Oct ach lOronaphthaJene--Skin..... 25 5 90 P^ropyiene imin?--Sna............ 30 Propyieoe oxide,.......... 100 .................Prcpyne, see MethyUccryitn*. o.i Pyr^tomm Pyr.dine................. .... ..........- 5 (237.1B--1969i_____ ______ 100 p.p.m. 240 Methylene chloride (237^3-1969) ____________ 500 p.p.m. 15 Oreano (alkyl) mercury tate.. is*, patioilate..................... L90 U5 Qumoae........................ --......... RDX-Srfir............................ vta.ic a.itdet.r.o.x.l.d.e....................................... f,,yr-,r; dtSucnde....................... 0 C5 C. 002 1C 1 Rhodium. Meta) fume and dusts, as Rh......................... . Sol'JL.e So.t......................... . Osnc.................... .......... ai 0 2 RonneL..................................... 1 j'j'.na:--Sen............................ 0 5 Rolenone (commercial ........ 0. 1 04 C1 ; uui 10 5 (237JO-1969) Styiene (237.12-1969)______ Tetrachloroetbylene Z37.22-1967 -----------------Tcluene (Z37.12-1967)______ 0.01 mg N51. lOOpp.m. 10C ppm. 200 p.p.m. **. v. *neia and sc.utie com* . founds................................... . duoroacetate tl0d0>-- Selemum compounds ,as St ... a ci S^ienjum hexifluonde............ Tncnlcrometuane. see Cr.toro. 0.06 Cr 2 Acceptable ceiimp concentration Fod.int hydroxide................... 2 Tncninrynauhtnai^n--t;n____ Hydrogen sulfide M.t me ... .. ':'.-ii3rd solvent....................... -.'-* c nee........................... a1 200 ` a 1, 150 (. 15 *.3 l.Z3*Tncboroprcpiae............... l.i.NTrv.iLGrG 1--..*irujUwro- .... ...................... .. . Tnei"-- .ar-.J" e ... . .. 5>, - ** y 300 - fiV j .237^-19561 .......................... 20 ppm. Chromic acid and chromates (237.3-1571; ...................... lag '.CM\ - . '.xLfMonic.................. .. 1 OUk, C. \KKr *Tu.u^rvhi--iwcrt __ 1 w. C ix> Mercury i23,.S-- 1ST!1 mg ICNf*. fvOLnoies at fend of table. No 105-- Pi FEDERAL REGISTER. VOL 36. NO 105--SATURDAY, MAT 29. 1971 2194 1O50G RULES AND REGULATIONS 7i'.'lL VS-.MlMBAl I". blasting r.ozzie and direct the flow tf the Association Explosion Venting Guide. abrasive material. NrPA 68-1954 Mppd MgM ' v Blasting cabinet. An enclosure 3 Blast-cleaning enclosures. <n where the operator stands outside ar.d Blast-cleaning enclosures shall be ex Siira Crt'tallr ivuartz i.'o.-pi.'i- 250 < Kras M: operates the blasting nozzle through an haust ventilated ir. such a way that a oper.me or openings ir. t.ie enclosure. conttr.uous inward flow of air will be .r,i 'Clean air Air of such purity that maintained at all openings m the en Ou&rtz total dtzs: `7~lOi-5 [-<SIOi-`-2 yuis-'M1 it will not cause harm or discomfort to an closure. during the blasting operation. individual if it is inhaled for extended a1 All air inlets and access openings cjSIO--I periods of time. shall be baffled or so arranged that by the Crutobaiite. Use '-5 the value calculated bora tbe count or raaso formulae for quartz. t an i Dust collector. A device cr com combination of inward air flow and baf bination of devices for separating dust fling the escape of abrasive or dust parfrom the air handled by an exhaust ticules into an adjacent work area will Tnovmlle' Use 45 the value calculated from tbe for* mulae for quartz ventilation system. be minimized and visible spurts of dust (viiii Exhaust ventilation system. A will not be observed. Amorphous. Including natural djatomaceous earth............. 20 SOmf'M* system for removing contaminated air (E>* The rate of exhaust shall be suf from a space, comprising two or more ficient to provide prompt clearance of the Trcmoltte. SfSIOs 5 DGragfM1 of the following elements (a> enclosure dust-laden air within the enclosure after or hood. (b> ductwork, (c) dust collect the cessation of blasting. Silicates (less than crys talline silica): Asbestos-*12 fibers per TiSiOi ing equipment, id) exhauster, and (e) tc) Before the enclosure Is opened, the discharge stack. blast shall be turned off and the exhaust ax) Particulate-filter respirator. An system shall be run for a sufficient period znlllllfter greater than 5 - microns In length 'or----Mica...................................... . 202 * air-purifying respirator, commonly re of time to remove the dusty air within ferred to as a dust or a fume respirator, the enclosure. Soapstone.............................. Tale....................................... Portland cemeDt.................. 20 20 JO which removes most of the dusz or fume idi Safety glass protected by screen from the air passing through the device. ing shall be used in observation windows, Graphite (nactlral)" Coal dust (respirable fraction lees than 5% StOil ............. For more than S<7 StO:........... 15 .... a Imp Afl or ... lOmg.'M* Cxi Respirable dust. Airborne dust in sizes capable of passing through the up per respiratory system to reach the lower lung passages. where hard deep-cutting abrasives are used. (ei Slit abrasive-resistant baffles shall be installed in multiple sets at all small %StOri-2 (xi) Rotary blast cleaning table. An access openings where dust might escape, Inert or Nuisance Dust: Respirable fraction___ Total dust.................... 15 SinglM* enclosure where the pieces to be cleaned and shall be inspected regularly and re 50 15m/Mt are positioned on a rotating table and are placed when needed. passed automatically through a series of (l> Doors shall be flanged and tight Norn* Conversion factors-- mppcfx35 3-mllllon paruclee per cubic meter -particles per c.c. Millions of parades per cubic foot of air. based on Impinge.* samples counted by light-held technics. ' Toe percentage of crystalline silica In the formula Is tbe amount determined from atr*borae samples, eztep: In those Instances in which other methods have been shown to be applicable. i As determined by tbe membrane filter method at 430 X phase contrast magnification. - Both concentration and percent quartz for the application of this limit are to be determined from the fraction passing a size-selector with tbe following charactensucs: Aerodynamic diameter (unit density sphere) -/ 2.5 35 5.0 10 Peroeot paselog selector 90 75 50 25 0 Tbe measurements under this note refer to tbe use of blast sprays. (xii) Abrasive blasting. The forcible application of an abrasive to a surface by pneumatic pressure, hydraulic pres sure, or centrifugal force. (2) Dust hazards from abrasive blast ing. (i) Abrasives and the surface coatings on the materials blasted are shattered and pulverized during blasting operations and the dust formed will con tain particles of respirable size. The com position and toxicity of the dust from these sources shall be considered in mak ing an evaluation of the potential health hazards. (ii) The concentration of respirable dust or fume m the breathing zone of the abrasive-blasting operator or any other worker shall be kept below the levels specified in 5 1910.93. " when closed. (2) Doors on blast-cleaning rooms shall be operable from both Inside and outside, except that where there is a small operator access door, the large work access door may be closed or opened from the outside only. ' (4) Exhaust ventilation systems. (1) The construction. Installation, inspec tion. and maintenance of exhaust sys tems shall conform to the principles and requirements set forth in American Na tional Standard Fundamentals Govern ing the Design and Operation of Local Exhaust Systems, Z9.2-1960, and ANSI Z33.1-1961. (a) When dust leaks are noted, re pairs shall be made as soon as possible. (b) The static pressure drop at the exhaust ducts leading from the equip ment shall be checked when the installa an AEC Instrument. If tbe respirable fraction of coal dust ts determined with a MRE the figure corresponding to that of 2.1 Mg'M* In tbarable for coal dust u 4.5 Mg 71* < ill' Organic abrasives which are com bustible shall be used only in automatic tion is completed and periodically there after to assure continued satisfactory systems. Where flammable" or explosive operation. Whenever an appreciable S 1910.94 Ventilation. dust mixtures may be present, the con change In the pressure drop indicates a (a) Abrasive blasting--(1) Defini tions applicable to this paragraph.--Ci) Abrasive. A solid substance used in an abrasiye blasting operation. (iii Abrasive-blasting respirator. A continuous flow air-lme respirator con structed so that it will cover the wearer's head. neck, and shoulders to protect him from rebounding abrasive. `in1 Bia$r cleaning barrel. A complete enclosure which rotates on an axis, or which has an internal moving tread to tumble the parts, in order to expose vari ous surfaces of the parts of the action of an automatic blast spray. *n Blast cleaning room. A complete struction of the equipment, including the exhaust system and all electric wiring shall conform to the requirements of American National Standard Installation of Blower and Exhaust Systems for Dust Stock, and Vapor Removal or Convevmg. Z33.1-1961 I.NFPA 91-1961 . and Amer ican National Standard National Elec trical Code. Cl-1968 NFPA 70-1958 The blast nozzle shall be bonded and grounded to prevent the buildup of static charges Where flammable or explosive dust mixtures may be present, the abra sive blasting enclosure, the ducts, and the dust collector shall be constructed with loose panels cr explosion vent.r.? areas, located cr sizes av ay ircir. any cccup.ed partial blockage, the system shall be cleaned and returned to normal operat ing condition. riii In installations where the abra sive is recirculated, the exhaust ventila tion system for the blasting enclosure shall not be relied upon for the removal of fines from the spent abrasive Instead of an abrasive separator. An abrasive separator shall be provided for the purpose. " in > The air exhausted from blast cleaning equipment shall be discharged through dust collecting equipment. Dust collectors shall be set up so that the ac cumulated dust can De emptied and rerr.c.ed wunoui contaminating other enclosure in which blasting operations area to provide for pressure relief m case working areas. are performed and where the operator of explosion, following the principles set >5) Personal protective equipment, m worits inside of the room to operate the forth in the National Fire Protection Only respiratory protective equipment FEPEFA1 REGiS'EF VOL 26 NC 105--SA-jROAr MAY 29 -92! 2195