Document ZB2nMRoZkvZxeqzkX8er2Ja1J

FILE NAME: Oil Industry and American Petroleum Institute (API) DATE: 1949 Apr 12 DOC#: API121 DOCUMENT DESCRIPTION: Standard Oil Confidential Report - Summary of Plant Industrial Hygiene Problems T I I company coirassm AL Wot For Publication In Proctnt Forn REPORT ON "SOMlMrr OF TZE FIANT INDUSTRIAL EGIZNS FR03LSMS" C. E e r r y , F a . D. J. K. Ecumond, M.S. R. 5. Bonoib, E.M. K. V, Eondricko, H.S. April 12, 19^9 MEDICAL DEPARTMENT, RESEARCE SECTION ' STAIDURD OIL COMFAIIY (KE'./ JERSEY) 30 ROCKEFELLER P U ZA lev yore 20, lev yora: EH003118 SOKXAHT 07 THE FI/JTT IKDHSTRIAL HTGIEIE EROBIEKS DESERVED IH SEVERAL REFINERIES e s s o cy-!PA?nr__________ _ C. K. Barry, Ph.D. la the time allotted to me, I should like to discuss the industrial hygiene problems in the Enro Company on tho baaio of broad group!ngn int- the type cf expccuroe. I bcliovo that this approach, rather than by oporr- tion, vill point up moro clearly the recponnibilitieB of the industrial hygienist. The follotring is a partial liot: 1. Exposuro to toxic gases, vapors, and xdntr 2. Exposure to toxic fuaec and dusts ` 3 . Industrial dormatitio a. Primary irritants . . b. Sensitising agents 4. Exposure to carcinogens . 5. Excessive heat 6. Excessive r.oiEC 7. Inadequate illumination 8 . Inadequate ventilation a. General b. Local exheust 9 . Vibrating tools 10. Atmospheric pollution . 11. Sanitary facilities 12. Special problems Tctflc .gaoeo, vapors, and mists occur quite generally throughout rc-inerics, frem hydrogen culfidJ in tho processing of oour cruder to mercury vapor in the instrument shopsj from sulfur diozicic in clv-tlge coolrin*, E (-0 03 119 -2 - to carbon monoxide in synthesis gas/ and from bcn2 ol vaporo in solvent de waxing, to the mists acsociatou with drum painting. Other potential expom i v .n cure to oxidoo of nitrogen, merceptnna, ocoonin, chlorine, toluol, xylol and other aranntica, acetone, methyl ethyl ketone, methyl propyl ke tone, methyl chloride, carbon totrachlorido, boron trifluoride, aluminum chloride, hydrogen chloride, culfur trioxide, lead tetraethyl, phenol, oulfur trioxide, aliphatic hydrocarbone both saturates and tineaturated, vaporized lube and grease additivee, vaporitod and sublimed placticizcrs, alcoholG from nathyl to iso-octyl, ethers, esters, and others. Fumes and dusts are encountered almost aG widely. There arc weld ing fumoo in maintenance opcratlono end occasional heavy oxpoeurco to ciliceouc catalyst dusts, coke dust free equipment cleaning and litharge dust in Doctor avcetonlng, oobostoo d.uot in insulating opcrc.tionr. and talc dust in rubber manufacture. Catalyot manufacture offorn a rid') varioty cf auot . expoourao. Lube and groaco manufacture offer exposurec to diatomaccouc errlh, ceveral typec of clcyc, graphite, motal stearates, lime, aobostoc, mica, rr.o others. Metallizing operatione, lead burning, sand bloc ting and pipt' resendltioning -- all prccent potential irductrial hygiene problems. Tho problem of lnductrial dermatltic io like the poor -- always with us. The problems vary from those ao3ociated with defatting of the okir., as would occur on intimate contact with certain petroleum fractions, to those accompanying tho use of harsh abrasives and detergenta in hand cleansers. There are plant oxposuron to primary skin irritanto, such ao the mineral c.rido and alkalio, end to more aorioun subetancec, as tho chromates. Cutting oim. gaoolino, lutt, and grease addltiveo prcoont opportuii M e n for contact with primary irritanzo, as wall ao ccnritizing agontc. E MO 0312 0 ' -3 - Erjaauro tc cereinogens, known and cuspocted, dips honvily into the ties and energy of tho Industrial hygienist. All of ur. ore faci liar with the problem acacelatod with was pressing. The control of thio protJcr:.. hovever, nay not be sufficiently cccplcto as statistical evidence io mount ing that the incidence of syctemic manifestations among thin group of c.-rplc;, eoB in out of lino with that for the general refinery population anil the population at large. The control program must be continually observed cni reviewed to incuro that mazimum worker protection is provided. Animal experimentation hoc indicated that certain heavy fractions from catalytic cracking are potentially carcinogenic to man, ns are the trrr. from cteam cracking and thermal reforming. Tho control programs for thee: materials have boon diBcusoed in detail and need not be reviewed at thie time except to indicato that they reprcccnt a cignifleant offoil on the p r t of industrial hygier.o paraonto 1 , paot and procent, and there is every rcu;cn to believe that oven greater industrial hygiene effort will bo required before all groups ccncernod with tho problem arc sure that a satisfactory control program has boon ovolvcd, inaugurated, and io running smoothly. Excocsive heat crposurcc cannot bo oolved for plant pcroonnel as easily as fer office employed viiero the latter can be sent hate in the middle of the afternoon if it gets too hot. Such expcourcE, directly acocrjated vith the work, occur in such videly varied activities os pipe- bonding end furnace thermocouple servicing, certain boiler house o.ctivitico, and working in confined aroea where tho equipment hao not cooled down entirely. During certain ooaoon-, any phyolcal labor of a strenuous typo, and cnpccirO. ly if it io performed in direct sunlight, may represent an occupational exposure of no noon oltsniflcancc. EM003121 - 1* - A medical opinion lifts been expressed in certain of tie refineries that hearing impairment is relatively cannon among ceitcin groups of workers, ouch aa the boilermakers. However, high noiee lerolo a m encountered in other parte of the refinery es well. Potentially undesirable noise levels might be encountered in the vicinity of high-spoed pumps. in compressor rooms, in generator roams of the power houses, to mention only a feu. Inadequate illumination la a problem that affeete clerical pcraonrcl as much and ea often aa proceas workers. Satisfactory illumination must bo considered in close ecnjuuction with tho Job to bo porfoimod and is u con-ssite of a number of items -- the intensity of the light, its color, contrast, amount of glare, and angle of incidence. Potential difficulties arising from inadequate illumination may bo encountered in any area of the refinery but is most likely to arinc from clerical activities. Fortunately, the open type of construction enployod in tetroleur. refining reducec tho number and variety of gonoral ventilation problems with which tho industrial hygienist nurt contend. On tho other hand, there a m numerous instances where enclosures liavo beer ccnotnictod for the ohclter of men and/or equipment,end the ventilation of these cpacec then became c problem. Pump housen frequently effor exposures to hydrogen oulfide; com pressor houses may provide exposures not only to hydrogen sulfide, but also to methyl chloride, arncrUa, or seme other refri gorent. In many caeca local exhaust ventilation ie required for n p n r l H r operations. Each of us is familiar with the cproy paint booth and the laboratory hood, but tho need for this typo of vontilotion can bo dcm?n':t:T';od for metalii2ii^-operat Iona, permanent voiding locations, dogreasers, tr.-.d driers, calenders, and dusting machines in rubber mnr.uiaccure. Er 003 122 - 5 - As in the cr of illumination, each operation muct bo conr.idorcd on on individual basic. If no ventilation ie provided; then the coed for such control must be dsmonotratod and asoistonee provided to bo ouro that the system vill be of the correct docign and of suitablo capacity. Bcrauro ventilation for health protection io so poorly understood, every industrird hygienist must bo conversant with hoed and duct design, fan types, and the propor collector to use for the specific contaminant. The capital outlay for a satisfactory rontilating system is for too large to porait unconcern ovor its future performance by tho Industrial hy&ionlct. Vibrating tools ere in use throughout tho plants and their effects, are of interest from an occupational standpoint. Thsse instruments range from electrically driven star drills, to Jackhammers and pavement broakcrc; and from tho use of chipping chicclc, to riveting operations. Those noed to be scrutinized frees the standpoint of frequency and duration of use, tho number of cycloo por minute, and fcaturos peculiar to tho activity that may hove significant medical implications. Since the snog incident r.t Donora, Pennsylvania, currently being investigated by the Industrial Hygiene Dlviricn, U.S. Public Health Service, the specter of atmospheric pollution has hsunted the industrial hygionict. This individual is trained and experienced on tho evaluation and control of atmospheric contaminants vithln a plant and it is only a small step, and a very logical one, for him to be called upon for similar functions related to tho discharge of undocirable contaminants into the atmosphore of e community. All cf tho Esso rofirerioo nr located in urban areas, and it io not unlikely that tho vork loc.d of the inlurtrial hygicnirl vill be augmented by toing callod upon in some degree to assist rr.nnace"rnt In this fiold of ondeovor. EM003123  - -6 - With respect to sanitary facilities, it would be desirable to be assured that all governmental requirements arc net and exceeded and that any control program, ae in tbo caco of the carcingena, will not bo imponed by the lack of lavatorieo and sheyert. In cortain cf our eotnbliohnentc, the lack of suitable facilities, their location, or their physical condi tion, io a very real problem. On the other hand, thir condition is being oteadily alloviated^ and tbo next few years should find the cituation much improved. " . In addition to tho industrial hygiene problems and activities previously enumerated, thero are others, real or alleged, thnt'require investigation, lootorday wo hoard of tho cancer problem associated with the manufacture of iooprspyl alcohol at the Bayvay Refinery. Thin problem, considered ncuto by the local menagocant becauso of the employoo rolntiono aspoct, hao entailed a tremondous amount of offort and the ond io not in sight. Devoloping lncldonco figuroo for tho Chemical Producto area alone utilized all available porsonnol free tho Nodical Department of tho Jersey Company and our own for ocveral weeks, and incidence figurn for the alcohol plant are Just now boing completed. Tho etiologic agent is not known but no offort io being oparod to identify it. Only after the problem hao been voll dofinod will it bo possible to sot up an intelligent control program. Tbs facto evolved at Bayvay muct then bo translated, insofar ao they nro comparable, Into a program at Baton Rsugc. ' _ Sovoral studios of & similar typo nay bo in ordor in other refin eries, inasmuch ao otatccouto rolative to tho incidences of certnin medical entltioo have .boon made ond ohould either be substantiated or dioprovod. CMB April 11, 19^9 ' EM00312; ismusTfliu. Ffcu:tg w ouz.-s cectvsp ik tits p .m v K'jrr-;:?.v J. W. Demand, M.S. In 19hS & curve7 of the Beytova Be firary End `he Specialty riant van made vith the aosistence of ISr. R. V. Hendricks. Tho purposes of this survey were to detoraiuo the materiair and conditions of health cignifiexnso and acquaint the lnduovrir.1 Hygienist vith the technical operations, rater.i.a.'.r, and products which a m handled ir. tho Rofinery and the Specialty riant. Thcoe operations ard the naturo cf the materials were investigated for tho -A purpose of locatinG any problem associated with refinery operations that night hive an cdverce effect on the health of the employee3 . Some of the quoctions that wore studied which occm to bo the most outstanding cro pvo- Bented in the summary attached. H e subjocte shown are by no moans 0. comploto list of obaorved industrial hygiene problems acsccicted with refinery opsra- tionc and tho manufacture of petroleum spocialticc. - On pace cno cf ths Summary the sanitary phcccr of -he industrial hygiene survey aro briefly presented. Tho question of prosoction cf th; drinking water supply and the method cf bactoriologicolly checking this for unsuspected boutcob of contamination were investigated. Ac a result of thin invoetigstion several voalmoesco wore brought out. The re .hod of collecting samples was changed to include carpics evory threo months from tho forerrost ends of tho water mains in addition to collecting conplce at a point very near tho well eito. This now program has disclosed, on on'* or two occnnionr, minor contamination which hue rc-culted in a m o m careful control over the cn tiro Byctcm. It was observed during thlc curvej' that there wore sevoral foun tains and other-.plxcco vhcro c.r.ployoeo obtained tlioir arinhing water tlv:t cjld not meet with tho nininnmi ciantiard from the standpoint of canitatiov.. A p-o- gram is now underway with tho ordoro being ioeued from the canRgor of the refinery to replace all unapproved typo of fountains, thuo to olir.iratc ar.y E f-0 03 125  V 1 " -2 - croco infection of the pcroonnol by thio means. The eld type of drin'-inr: water etna oro being replaced by a sanitary type which keeps the uator ar.i ice copamted. Until the nou typo cf cans can bo 6ubrtl:utod in every in stance, chlorine tablota aro being uaed to Atari lice the drinking water mixturo in the insanitary typo of cano. The rofuoe and sewage dioposel methods wore ctudied. The good, sanitary program ouch ao, the construction cf tho oovago diopoanl plant, installation cf cewerago linos to cepare.ce the storm and industrial wncito draino from the sanitary severe, and replacement of all the- open-typo privies, hao been greatly accelerated. since tais survey. This survey pointed cutthrough the report that comunicable diooaoos wore easily transmitted by various insects under the existing conditions in the Bofinery. Tho washing and sanitary facilities available to tho employeoo were reviewed. Beconnecdaticne for tho Increase in the number of thooe fa cilities wore made and in many caooo the nooded changee or additions have been occured. Thio program hae been well underway oinco before the connec tion of tho Industrial Eygloaist with the Compeny, but due to the bringing to light of many industrial hygiene problomo which would dictate tho noed for the oxpanoion of the faci?.itioo, thin program hao now ronchad the stag.-> that the approval cf requested fecilitieo from top management lo essurod if they are escential in the medical program. By the beginning cf tho yoar 1930, tho fecilitieo which wore soon to have boon nooded will bo ccmplotod or undor con struction. In a few locationo where toxic materials were being handled and the nature of the work mao it nocesr-ary for the employees to got badly ootled, hot wator hao. been added to tho preoent vnohing facilities. The precenco of toxic mterlalo vao brought to the attention of the ffenageejnt to Juetify tho added expense of installing hot water. EHO 0312 6 3 It vlll only be possible in the few minutes that have. bocr. allot.'-, to ma to cover the moot outstanding faaxerda osaociatod with toxic cetcriel.c. Flrot/ from the standpoint of tho number of enmloycoa oxpoood ai/l the general proconce of tho material throughout tho Beflnery, ono vould have to list hydrogen and organic sulfidoc. Prior to thir. survoy, ooverei cocos of serious 030 irritation ec.ro to the attention of the Medical Divi clon fran a low grade expooure of rather long duration to sulfides. At cinothei locotion thio ourvoy dioclocod that there veo a rather oeriouc poooibility of cyo irritation fron t!ie prescnco of hydrogen sulfide. Before any actior. v.v tehee on tho recommendation, such ae instigating a dotailed atudy of thlc location and recommending adequate ventilation, soveral eye caaeo roportod to the hospital for treatment from tills unit. There still exists the need for a detailed and quantitative invontigntion of thcoo oulfidoo in many other unito. Thic gas has boon responsible* for very serious, acute poisoning end oomo cases have reoulted in fatalltioo. Uador the existing conditions, th-* procaucion3 used, and the concentrations cf oulfido thes aro now found, it is the opinion that the denger lo not only eyo irritation, but possibly chronic systemic poisoning f r a lev concentrations. The currently used euifide detector is not censitlvo enough, to pick up concentrations of there ft'-sco vhlch vzill produce physiological effects. An adoquate appraisal would depend upon using absolute quantitative chemical cotbods and integrated camples. There aro at least five skilled crafts where possibility of plur.'M cm existo.. To date no investigation of this problem In tho nature of either atmospheric samples or lead excretion values of body fluids has been curricc. out. 7hi6 litter will osen be undertaken by the analytical laboratory, Mercury is extensively used by the laboratory analytical group, tho resoarch engineors, and handlod in largo quontiticc by the Instrument Men. EM003127 This potential problcn has received u deal of ettention frea the Hedice! Divlaicn through having ocployoos vitfc the greatest empoeure report to the hospital so that urine speclncno could be collected and sub mitted to the analytical laboratory for analysis. More than 60 samples have been collected and chocked for mercury no far. This study io continu ing. In several locations mercury vapors have been found by atmospheric rarr>- llcg. In some of theca locations vhore mercury is rogulerly used; a weekly check is beingmado end a record kept by the operatine peraonnel or the analytical laboratory at the request of tho departmental supervisor. Other heavy metals vhich have been located and vo kr.ov present enough exposure that they should bo studied aro zinc, chromate, cadmium, and to a l c c c o r degree, beryllium. Up to the present tine no quantitative values arc avail able on these materials. Silica and cstectcs are both extensively ucod in the Refinery by a limited number of employees. To date the only quantitative study we have made dealt vith the composition of contact clay. The free Bilice contont of these clays has been dotormined by a caroful chemical analysis acsioted by x-ray opoctogrsph. It iB felt that a otudy on the atmospheric concentrations on silica and silicate duct associated with rclliiing the furnaces io of immediate importance. Silica bricks ere commonly ucod in lining the furnaces used in the Refinery. Even vhere silicate bricks are used, it is known that in high tomperaturoo these silicates docoupoco to form very dangerous forms of allies, criotobslite, end tridymlte. The exposure to nabontoo under normQl operating conditions in tho Refinery is not* oxtencivc "but frequently it io necessary fer an insulator to do work inside of e closed apace with limited ventilation, nnkinc It roorib.'o that a high concentration of asbeatoc dust may be engendered. Also,the EH003128 I ' -5 - osbostos insulations art* saved by power savo which give off rather bcr^-y cloudJB of dust. This problem should be studied. Xho onalyoin for free silica in. contact lubo cinyc diocloaccl the average concentration io about five percent. This is valuable informs - tion in view of the fact that the Public Health Service has on record an analysis of a similar type clay which they claim to have contained 20 free silica. It further boheovoa un to coke fairly cocpleto surveys of the loer- tions where silicate is apparently being handled/ including tho Bubber Flor.t where talc io applied tc tho finished rubber. Such a detailed otudy, with complete dust counts at various locations and erposuree, will be invaluable for our records chould ire lntor bo confronted with carplainto ar.d cleimn from fornor employees who might have worked at theso locations. Ho doubt tho duat ccunt6 will disclose coos unnecessarily dusty operatlono that can In controlled by mechanical mesne. At the Acid Plent and at the SOp Plants/ low concentrations of sul fur dioxido and trioxidor are potential problems. Many coupleintc havt> b?cn received at various timec from the Acid Plant, end it vac observed that various opcratlonc carriod out there involve irritating concentration:). As a happy result of on astivo deportment management's nttonpt to improve these condi tions, the current situation io much improved. The proof of those improve ments was recently brought to our attention when it was reported that emplcyoec are now requesting tc be acoignod to the Acid Plant rather than tryinn in every way poosible to get transferred away. Hot all of the problems have been aolved;but much money for tho jxirpooo of improving this area has boon spent and even moro- Hno been requected. . In connection with tho sulfur oxide problem, not only ir. the Bofir-ry proper but in the surrounding community, a study baa boon instigated to teko EM003129 -6 - atmospheric temples at vtriouo distances iron the Keflnary to C8tr.b7.inh Information pertaining to the concentration* that may exlet unbar vei-ylr'; veather conditlenr. It 1b planned that this study fill te prolonged ov<- a period of years, if Monetary, to establish enough factual analytical date that l dccloicn can hr reached or. to the errtent of the proa lea w;th vnrl" gases, j\ preliminary Investigation or to the extent of vegetation d i n the vicinity of the Eefinory hao alreaiy been otaried. It vac oboerv^d i~ing this survey that fairly hip concentrations of nitrogen dlcnide e.ulcied in feur cioll tulldirgi: cxcooictrd vita the. Aold Plant. A:morph'rlc r discloced that the nitrogen dior.lde exposure vea a very ccriou6 profclc:.. *.j anyone having to enter the building even for a 6hort period. Warning tins have been placed in this area ant. Management has ordered t'ist tho engineers design adequate ventilation to1reduce the concentrations of nitrogen d1o"<d'to those that are recognized cs hcrnlese. Concentrations of benaol vere detected in tho atmosphere at the h.-.l. Plant., in some of the laboratories, and ct the Bottle Lcumdry vhich voro t-rlicvoc to bo excessive iVr prolonged exposure. Ac c. rciult 0/ the or.<icu .!a r e '. vorh accomplished through this survey, the IdlK Ple.nt oujervieor har Suit.luted the removal of benzene and the substitution of toluene in its stead. This substitution does not cor.trol the problem entirely; but It d lainisher the seriousness of it. Other aromatic r, Including toluene and xylol, cu-ronro, and oth'rr cre # manufactured in large quantities. These cr.pacurco r.re considered lr. r:r.nv cases to be v!thln.,acecpcc(. limits, but .here lo uo vcy of being ouro 1:1 .c- .1:: <.!/'. ;l that they nay produce on the health of the employerr. viihojt making. ;ler`. atmospheric examinations to cstacliih tho range and duration of cxyonu-o EM003130 7 It 1 e causen practice to use chlorinated hydrocarbons to c>rnu electrical motora *t\ various Instrumenta in two or mor* deportments of the Refinery. This problem is being currently studied in detail with the assistance of the safety engineers. This study will include not only the Refinery and the Specialty Plant, but also the Production Department err! Rumble Pipe Line Company's operations. Varcol was found being used freely without regard to tho i y aro matics it contains. *In a few units heat, which has been the cause of various fatigue caaes as well as the source of many complaints, was obotrved. Tics* hoc not permitted any detailed study of the problems associated with heat anti noio", but it is felt that it is important enough that such e study is Justified. In most casec, these studies have been carried out by the cperr.tlng personnel in charge cf the various departments with the assistance of the laboratories which are avcileble tc then. The tedlcul Division has servod a r> consultant on making available approved typo analytical methods to be uced ir atmospheric tecting, analyeis of urine ccmples, and to interpret the results that the analyst reports. In some departments the supervisor hes net felt that they had qualified personnel, supplios, equipment, cr the time to mnk** these indicated surveys. In there cases, when possible, the Industrial EypdenJr has carried cut the chemical and engineering serviceo. In some instar.cer th" equipment and time were not available to the Industrial Hygienist and he hnn turned to the industrial hygiene services of the Texas Stste Department of Health for assistance cn a quantitative apprcical of the toxic materials known to be present in the atmosphere. These public officials have teen very co operative Id every voy in trying to further the general well-being of 1-ho Humble employees. . i E P O 03131 / -b - Time does not permit ne to touch on m a y of the otbor prob'.enr, some of which are aa major e* tbeco, thct have been uncovered,nor ic tills the meeting to report on the e cn .ita .ry engineering crpsct o:' the cork which has been carried out in cloao cooperation with the civil engineerc of the Compeny. It ia sufficient to say that,ao a result of three activities, th-> various engineering standards and guides have been rewritten vith tho viev in aind of mating it possible for the unlnitictod engineer to eupervioo construction of adequate water and sewage facilities to protect erployeoc1 health This phase of tho problem caeca to heve net vith complete c.pjrovt i of Manngeiont. JWH April 12, 19^9 E MO 0313 2 ; APFTIDIX SUKHAHT OF PftZLII-HKART INDUSTRIAL BYGICTfE STJBTC3 AT BATTWN Condition and Focili tv Driating Water, Fountains and Coolers Sewage Dicpoca! Waehirg and Sani tary Facilities Potential Di oenaeo Twenty-one Cosrcuni cable Dlooaoes Ten Coastunicable Diseases Skin Irritation (dentatitin) and Systoiic Poioonlcc Departnont cr Craft Affected ____B;~ RrccCTcndation______ Turnaround end labor Gangs, and Twenty or tore Unito All Units and Peroorno! Mechanical, labor, Proceooing ar.l Others EM003133 -2 - sunvrr sW.Mrr or p g m M i u r r ikitjstrial k y g i .t a t a\rrwr; Material or Condition Hydrogen end Organic SulTideo Lead Mercury Zinc, Metal Fu e o q Chromateo end Beryllium (Slight Exp. ) Silice and Acbostoo Potential Diseases Eyo Irritation and Ulceration. Systemic Poleonine Plumb1 on Mcrcurialisn Puma Fever, and SyDtemic Poiocning Lung Cancer and Skin Tumor Silicosic, Fiberooic, Erythema & Cancer of Lungf Department or Crofts Affected _____ Sy Pccocrorndntlcnn_______ Distillation, Light Fndc, Cracking, Treaters, Punpinr. Gauging, llschnnicai & Ct'irrr Labor, Painting, Weeding and Burning and licehino Shop Instrument, Laboratory, Warehouse and Pilot Plant KSochanical Painting, Mechanical L labor Brick MasonB L Helpers, Insulatore, Laborers ana Pipe Benders t E MO 0 3 1 3 4 3 - STJKMAHY OF PHSLUHNAPT INDUSTRIA I, ETSIEKE StEVETT AT BAYTOWN Material or Condition Silicates and Coks lust Sulfur Dioxide and Trioxide and Acid Mist Nitroc.cn D i oxide Potential Effects ' Fifcroele, and Poeoibly Lung Tunore Irritation, Astkna, and Poisoning Edcnn of Lungs opartDent or Craft Affected by Rccoraendntionr, Contact, Straining and Blending, Cracking Colla and labor Tractera, Acid Plant, Battories, and SOg Planto Acid Plant and Welding E HO 0313 5 i - U - SUMMARY OF PRELIMINARY IMrjSTR IA1. HYGIENE SURVEY AT BiYTWK' (Continued) Material or Condi tlon Benzol Toluol, Xylol and Heavy Arcontlco Varool and High Aromtic Naphtha Chlorinated Hydrocarbons Hoat and . N a la c Fotentinl Effects Blood Dlcceor one Cancer Bleed Dioenoe DeiiEititiB end Blcod Dioeaoo Cirrhooio of Liver General Malalco, Exhaustion and Oaafnooc 0 ep3rtncnt or Craft Affected by Peconncndr.tlonn MLn Plant, Icbomtory and Bottle Laundry MRK, SO? Plante. ISFU, NRU, and P t C Unite Generally Deed Throughout Refinery Instrument & Electrical Maintenance Crcvo, Punpero, Bollor and Power Houses Feraonnel EMO 03136