Document MzxYo27YzEOVX2qrbJ0EpBma

Castleman File: American Petroleum Institute w/c = with cover letter or memo If DATE = 0, undated CD-ROM Document #:API i q , DATE " published article from trade journal published advertisements newspaper article published government report government inspection results unpublished or internal report unpublished presentation from conference letter memorandum industry warning labels industry sales literature industry recommended practices meeting minutes (with attachments) membership list BC notes company coirassirmL Hot For Publication In Procent Form . REPORT ON "somirr of tee piant industrial ETCITNE PROBLEMS" C. Perry, Fb.D. J. K. EaEiumd, M.S. It. 5. Bcnoib, E.M. K. V, Eondricka, M.S. April 12, 1949 MEDICAL DEPARTMENT, RESEARCE SECTION STANU3D OIL C0KFAHY (KEV JERSEY) 30 ROCKEFELLER PULA hew yof.k 20, iev yore EM003118 SOMXART 07 TUZ FLAN? INDUSTRIAL HTGZ2IE PROBIZKS OBSERVED Hi SEVERAL REFINERIES ESSO C y-LPA'TY_____________ C. K. Barry, Fh.D. la the time allotted to me, I should like to discuss the Industrie 1 hygiene problems in the Er.ro Company on tho basic of broad group!nicy: int>- the type cf expccuroe. I beliovo that this approach, rather thar. by oporr- tion, vill point up moro clearly the responsibilities of the industrial hygienist. The following is a partial list: 1. Exposuro to toxic gases, vapors, and mists 2. Exposure to toxic fuses and dusts 3. Industrial dermatitis ' a. Primary irritants . b. Sensitising agents . 4. Exposure to carcinogens . 5. Excessive heat 6. Excessive r.oisc 7. Inadequate illumination 8. Inadequate ventilation a. General b. Local exheust 9. Vibrating tools 10. Atmospheric pollution . 11. Sanitary facilities 12. Special problems Tctflc .gases, vapors, and mists occur quits generally throughout the rc-ineries; from hydrogen culfidj in tho processing of oour cruder, to morcurj vapor in the instrument shoesj from sulfur diozidc in sludge cookin', E.K0 03 11V -2- to carbon monoxide In Byntheaic gas/ and fron benzol vnporo in solvent de waxing, to the mists associated with drum painting. Other potential expo- are to oxidoo of nitrogen, merccptnns, umnonin, chlorino, toluol, xylol and other aranatica, acetone, sathyl ethyl ketone, methyl propyl ke tone, methyl chloride, carbon totrachlorido, boron trlfluorido, aluminum chloride, hydrogen chloride, oulfur trioxide, lead tetraethyl, phenol, sulfur trioxide, aliphatic hydrocarbona both saturated and unaaturated, vaporized lube and grease additiveo, vaporizod and sublimed plosticizcrs, alcoholG from methyl to iso-octyl, ethers, esters, and others. Fumes and ducts are encountered almost aG widely. There arc weld ing funoo in maintenance opcratlono end occasional heavy oxpoeurco to ciliceouc catalyst dusts, coke dust free equipment cleaning and litharge dust in Doctor svcetonlng, aobostoo d.uot in insulating opcrc.tlonr. and talc duet in rubber manufacture. Catalyot manufacture offorn a rldu varioty cf duot . expoouroo. Lube and groans manufacture offer cxposurcc to diatomaccouc ecrlh, ceveral typec of clcyc, graphite, motal stearates, line, aobostoc, mica, mo others. Metallizing operatione, lead burning, Band bleating and pipe re con ditioning -- all prceent potential industrial hygiene problems. Tho problem of inductrlcl dermatitic is like the poor -- always with us. The problems vary from thoce associated with defatting of the chin, as would occur on intlcnte contact with certain petroleum fractions, to those accompanying tho use of harsh abrasives end detergents in hand cleanocrG. There ere plant oxpo6uron to primary skin irritants, such ao the mineral c.rJdo and alkalis, end to mere Berioun subetancec, as tho chrocnhcB. Cutting oi m, gaoollno, lute, and grease additiveo prcoont opportu-il Men for contact withprimary lrritanco, as wall ao ccntltizlng agentc. E MO 0312 0 i ' -3- Erposuro tc cereinogenn, known and cuspocted, dips honvily intr the time and enorgy of tho industrial hygienist. All of un are fan: liar with the problca acacclatod with wax pressing. The control of thio protJcr:.. hovever, nay not be sufficiently conplcto as statistical evidence io Bound ing that the incidence of syctemic manifestations among thio group of c.tj- Ic., eoB io out of lino with that for the general refinery population and the population at large. The control prograa nuct be continually observed end reviewed to incuro that mizimum worker protection is provided. Aninal experimentation hoc Indicated that certain heavy fractions fron catalytic cracking are potentially carcinogenic to non, as are the trrr. fron cteam cracking and thermal reforming. Tho control programs for thocc materials have boon discussed in detail and need not be reviewed at thio time except to indicato that they represent a significant effort on the p-rt of industrial hygier.o pcrsonnol,' past and procent, and there is every ret:;.on to believe that oven greater industrial hygiene effort will bo required before all groups ccnceniod with tho problem are sure that a oaticfacto.-y control program has boon ovolvcd, inaugurated, and io running smoothly. Excossive heat crpoourcc cannot bo oolved for plant pcroonncl os easily as for office employecc viiero the latter can be sent hate in the middle of the afternoon if it gets too hot. Such exposures, directly acocriated vith the work, occur in such widely varied activities as pipc bonding end furnace thermocouple corvlcing, certain boiler house nativities, and working in confined aroao where tho equipment hno not cooled down entirely. During cortain ooaoon-, any physical labor of a strenuous typo, and cnpcc i rO.Iy if it is performed in direct sunlight, may represent an occupational exposure of no noon citjniflcanec. EM003121 -k- A medical opinion line been exproeoed in certain of the refineries that hearing impairment z relatively cosmon among certcm groups of workers, ouch aa the bcilersmkera. Eevover, high noiee levolo am encountered in other parte of the refinery ea well. Potentially undesirable noiee lovclc might be encountered in the vicinity of high-speed pumps, in compressor rooms, in generator rooms of the penfar houses, to mention only a feu. Inadequate illumination la a problem that affects clerical persanrei as much and as often es process workers. Satisfactory illumination must be considered in closo conjunction with tho Job to bo porfoimed and is u con-eeite of a number of items -- the intensity of the light, its color, contrast, amount of glare, and angles of incidence. Potential difficulties arising from inadequate illumination may bo encountered in any area of the refinery tut is most likely to orioc from clerical activities. Fortunately, the open type of construction employed in retroleur. refining reduces tho number and variety of gonoral ventilation problcnn with which tho industrial hygienist nurt contend. On tho other hand, there arc numerous instances where enclosures liavo been ccnstructod for the oholter of men and/or eouipreent, ari the ventilation of these cpococ then bccccroo c problem. Pun? housen frocucntly effor exponures to hydrogen oulfide; com pressor houses may provide exposures not only to hydrogen sulfide, but also to methyl chloride, ermcnla, or oemo other refrigerant. In many caccs local oxhaust ventilation if. required for spoolf7e operations. Each of us ic familiar vith the cprsy paint sooth and the laboratory hood, but tho need for this typo of voniilotion can bo dca?net:v-;ed for metaLli2ii^operations, permanent welding locations, degreaocro, and driers, calondero, and dusting machines in rubbor nmr.ufaciurc E Y0 03 l22 - 5- As in the cf of illumination, each operation must ho considered on an individual basic. If no ventilation ie provided., then the coed for aueh control nruot be demonstrated and aaoiatonce provided to bo oure that the system vill be of the correct docign and of suitablo capacity. Becauro ventilation for health protection io ao poorly understood, every industrirl hygienist must bo conversant with hoed and duct design, fan types, and the propor collector to uce for the specific contaminant. The capital outlay for a satisfactory ventilating system Is for too large to permit unconcern ovor its future performance by tho industrial hygionlct. Vibrating tools are in use througiout tho plants and their effect:, are of interest from an occupational standpoint. Thooe instruments rangr from electrically driven star drills, to Jackhammers and povement broakers^ and from tho uoo of chipping chicoln, to riveting operations. Those need to be scrutinized from the standpoint of frequency and duration of use, the number of cyclco por minute, and features peculiar to tho activity that may have 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 heunted the industrial hygionict. Thio individual is trained on-l experienced on tho evaluation and control of atnosphoric contaminants vithin 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 atnosphore of e community. All cf tho Esbo rofinorios nr located in urban areao, and it is not unlikely that tho vork load of the inlurtrial hygienicl vill be augsented by boing callod upon in some degree to assist manego "mi in this fiold of ondeovor. EMO 0312 3 - 6- With respect to sanitary facilities, it would be desirable to be assured that governmental requirements arc net and exceeded and that any control program/ aa in tho caco of the carcinogens, will not bo impeded by the lack of lavatorieo and shevert. In cortain cf our eotnbliehnentc, the lack of suitable facilities, their location, or their physical condi tion, io a rery real problem. On the other hand, tide condition is being steadily alleviate^ and tbo next few years should find the cltuation much improved. ' . In addition to tho industrial hygiene problems and activitico previously enumerated, thero are others, real or alleged, that'require investigation. Tootorday wo hoard of tho cancer problem associated with the manufacture of iooprspyl alcohol at the Bayvay Refinery. This problem, coneidored acuto by the local Bcnagcnent becauso of the employee relations aspoct, hao entailed a tremondous amount of offort and tho oni io not in sight. Dovoloping incldonco figuroo for tho Chemical Irodncto aroa alone utilized all available porsonnol from tho Nodical Department of tho Jersey Company and our own for ocveral weeks, and incidence figuror. for the alcohol plant are Just now boing completed. Tho etiologie agent As not known but no offort io being operod to identify it. Only after the problem has been vo11 dofinod will it bo possible to 60t up an intelligent control program. The facto evolved at Bayvay muct then bo translated, insofar as they arc comparable, into a program at Baton Rouge. ' _ Sevoral studios of a similar typo nay bo in ordor in other refin eries, inasmuch os otatccoato relative to tho incldoncco of certain medical entltioo have .toon made and should either be substantiated or dloerovod. CMB April 11, 19^9 ' EM003124 litD'jGTOiAi. ETGn:g raoix'-h-s CESgivsr* IK Till p/.yrcr..y Ki,Tr';:?.y J. V. Ec=aad, K.S. In 19hS a ourvoy of tho Baytown Bcfinory and -he Specialty riant wao ffindo with the assistance of llr. H. V. Hendricks. Tho purposes of this survey were to detormina the emtoriole and conditions of health significance and acquaint the Industrial Eygionict with the technical operations, rateria.'.r, and products which are handled lr. tho Rofinery and the Specialty Plane. Thcoc operations ard the naturo cf the materials were investigated for tho -4 purpose of locating any prcblec associated with refinery operations that oight have on adverce offoct on the health of the employees. Soso of the quoctions that ware studied which seem to bo the moot outstanding oro prr>- Bcnted in the omraary attached. The subjects ahown ore by no moans a comp.-.oto list of obeorved industrial hygiene problems associated with refinery opsra- tionc and tho aanuiacturo of petroleum spocialticc. On page cno cf tho Summary the sanitary phaccr of -the Industrial hygiene survey aro briefly presented. Tho question of protection cf the drinking water supply ana the cothod cf bacteriological}}- chocking this for uncucpected sources of contamination vereinvestigated. Ac a result of thin investigation several voaknocscs wore brought out. The no-hod of collecting sanplcc was changed to include camplcc evory threo mootie from tho foremost ends of the water mains in addition to collecting camples at a point very near tho well cito. This new program hac discloood, on on" or two occanionr, minor contamination which hue rc-culted in a bsw careful control-over the en tire Byctem. It was observed during thlc curve;- that there wore cevora] fom- tains and other-.plecco where employees obtained their drin':iug water that eld not neat with tho niniema eiandard from the standpoint of sanitation, A p-o- graffl is now underway vlth tho ordors being iouucd from the nanagor of the refinery to replace all ur.approvod typo of fountains, thus to elinirate ar.y Ef"003l25  V1 2" - - croco infection of the pcroonnol by thio msone. The old typo of drln'-inr: water corns ore being roploced by a sanitary type which keeps the water end ico eoparated. Until the nov typo cf cans can bo 6ubrtl:utod in evor.v intt tnr.ee, chlorine tatlots aro being used to a tori lite the drinking voter mirturo in tho inccaitary iypo of conn. The rofuac and sewage dioposel methods wore ctudied. Tho good sanitary program ouch as, the construction cf tho oovagw disposal plant, installation cf ccvcrago linos to esparate tho storm and industrial waste draino from the oanltory zevaro, and replacement of all the open-typo privies, hao been greatly accelerated since taio survey. This survey pointed cut through the ropert that communicable disoaoos were easily Iranomitted by varioufl inoects under the existing conditions in tho Refinery. Tho vaohing and sanitary facilities evcilablo to tho employees vero reviewed. Rcccrxnocdnticns for tho increase in the number of thooe fa cilities wore made and in many cases tho noodod changpo or additions have been occured. Thio program has been veil underway since before the connec tion of tho Industrial Eygionist with the Compeny, but dv.t to the bringing to light of many induotrial hygiene probloms which would dictate tho noed for the expansion of the facl?.itioo/ thin program has now roachod the stag.'' that the approval cf requosted facilities from top management lo assurod if they are escential in the medical program. By tho beginning cf tho yoar 1930, tho facilities which wore soon to have boon nooded will bo ccmplotod or undor con struction. In e few locations where toxic materials were being bandied and the nature of the vork made it nocossary for the employees to got badly sot led, hot vator has. been added to tho preoont washing facilities. The precenco of toxic materials vao brought to the attention of the Manajrjcjnt to Justify tho added expense of installing hot water. E HO 0312 6 3 It vill only be possible in the few nlnutm? that have bocr: aMoi.--, to ma to cover the moot outstanding hazerda ossoeiatod with toxic cctcrielc. Firot, from tho standpoint of tho number of emtloycoa oxpoood an-] the esneral proconce of tho material throughout the fiefleery, cno vould have to list hydrogen and organic sulfidoo. Prior to thic ourvoy, oevercl cesos of cerious ojts irritation car to the attention of the Medical Division fran a low gnde expooure of rather long duration to oulfidea. At cinothei location thio ourvoy dioclocod that there veo a rather eeriouc poaoibility of eye irritation from t!ie presenco of hydrogen culfldo. Before any actior. v.v taken on tho recommendation, such as instigating a aotailcd atudy of thic location and recommending adequate ventilation, several eye casco reported to the hospital for treatment froa tills unit. There still exists tho need for a detailed and quantitative invontigntion of thc-oe oulfldoo in mr.ny other unito. Thic gao has boon responsible for very eeriouc, acute poisoning end oorno casco have reoulted in fatalitloo. Undor the existing conditior.o, th* precautions used, and the concentrations cf oulfido that are now found, it io the opinion that the danger lo not only oyo irritation, but poccitly chronic systonic poisoning, from lav conccntraticnc. The currently used eulfide detector io not censitivo enough, to pick up ccr.centrationo of there r.neo which will produce physiological effects. An adoquate appraisal would depend upon using abooluto quantitative chemical methods and intsgrated camples. There aro at least five shilled crafts where possibility of plur.'Mrm exicto._ To date no invectlgation of this problem in tho nature of either atmoopheric sacploo or lead excretion vnlueo of body fluids has been carricc. out. This loiter will oocn be undertaken by the analytical laboratory. Morcury io extensively used by the laboratory analytical group, tho resoarch engineers, and handled in largo quantiticc by the Inctrumont Men. EM003127 -c Thifl potential protilor has received u great deal of attention from the Medical Diviaicn through having employees vith the greatest exposure report to the hospital so that urine specimens could be ccllectcd and sub mitted to the analytical laboratory for analynia. More than 60 samples have been collected and chocked for mercury no far. Thia study io continring. In several locations iwrcury yapora have been found by atmospheric r.arrrv ling. In some of thece locations vhore mercury io rogulerly ueed; a vock.iy check la being cs-do end a roccrd kept by the operating personnel or the analytical laboratory at the request of the departmental supervisor. Other heavy metals vhich have been located and vo kr.ov present enough exposure that they should bo studied or tine, chromate, cadmium, and to a lessor 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 Rofinory by a limited number of employees. To date the only quantitative atudy ve hevo made dealt vith the composition of contact clay. The fros Bilicc contont of these clays has been determined by a caroful chemical analysis seriated by x-ray opoctograph. It io felt that a otuiy on the atmospheric concentrations on ailica and silicate duct associated with rolinlng the furnaces is cf immediate Importance. Silica bricks are commonly ucod in lining the furnr.crs used in the Refinery. Even vhere silicate bricks are used, it is known that in high tomporatures theoo silicates docompoco to form very dangerous forms of silica, criotobalite, end trldymlte. The exposure to aaboctos under normal operating conditions in the Refinery le not* oxtencivc but frequently it io necessary for an insulator to do work inside of e closed space vith limited ventilation. Tasking It roseibln that a high concentration of asbestoc dust may be engendered. Also,the EH00J128 I ' -5- asboato* inanitions art* paved by power aavo which give off rather bonny clouds of dust. This problea should be studied. Tho annlynio for free allies in. contact lubo cloys dloclooccl thei, the average concentration io about five percent. This in valuable inform-- tion in viev of tho fact that the Public Health Service hao on record an analysis of a similar type clay vhich they claim to have contained 20Z free oillca. It further boheovoa un to coke fairly cocnplcto surveys of the loca tions where silicate is apparently being handled/ includinc tho Bubber Fltr.t where talc io applied tc tho finiohod rubber. Such a detailed study, with complete duot counts at various locations and enpoouree, will be invaluable for our records should ire lntor bo confronted with carplninto ar.d claims from fornor employees who might have worked at theso locations. Ho doubt tho duot ccunt6 vill dioclooo cans unnoceseerily duBty operations that can l.e controllod by mechanical meanc. At the Acid Plent and at the SOp Plants/ low concentrations of cul- fur dioxido end trioxidoc aro potential problems. Many complaints have been received at various times from the Acid Plant, and it vac observed that various operations carriod out there involve irritating concentration:). As a happy result of an activo doportmont management's attempt to improve these condi tions, the current situation is much improved. The proof of those improve ments was recently brought to our attention when It was reported that employees are now roquootiDg tc be asoignod to the Acid Plant rather than trying in every vny poaslble to get transferred away. Hot all of the problems have been solved, but much money for tho jxrrpooe of improving this area has boon spent and even moro- Hao been requested. . In connoction with tho sulfur oxide problem, not only ir. the Bofir'Ty proper but in the surrounding community, a study has boon instigated to teko EM003129 -6- atmospheric sample* at voriouo distance* from the Keflncry to establish information pertaining to the concent ration* that may exlet unbar vnrylr'; weather condltlenr. It Is planned that thl* study fill be prolonged ov<- a period of yetre, If necessary, to eatabllah enougi factual analytical date that l decloicn can hr reached or. to the errtent of the proa lea w.'th vuet" gases. A preliminary Investigation nr to the extent of vegetation dr:r>/.. ii: the vicinity of the Be finery has already been otaried. It vac oboerv^d >-ing this survey that fairly high concentrations of nitrogen dlcnide e::ir.led in fear email bul.ldirgt: occoziatrd vita the. Aoid Plant. Aimocph"ric r:a,'>disclocod that the nitrogen dioxide exposure van a very ceriou6 problu:.. i 5 anyone having to enter the building even for a 6hort period. Warning drr, have been placed in this area ant. Management has orderod t'iat the er.gl rears design adequate ventilation to1reduce the concentrations of nitrogen clle"<dto those that are recognized as hnr.'ilcae. Concentrations of benzol were detected in thu ntmoophere nt Hit- I'.-.l. Plant; in some of the laboratories, and at the Bottle It undry which vere be lieved to bo excessive IVr prolonged exposure. Ac c. roiu.lt of the ot.'icc..<'rc vorh accomplished through this survey, the M1K Plant oujervieor hac lull luted the removal of benzene and the substitution of toluene in its stead. ThiJ substitution dees not control the problem entirejy, but it d lainiehcr the seriousness of it. Other aromatic r, including toluene and xylol, cu-reneo, and ot.h'rr cm # manufactured in large quantities. These cxpocureo r.ro considered lr. t:r.ny cases to be wlthin.,accepted limits, but there lo uo vcy of bcir.f. ourn ri to tl:: off. .1 that they nay produce on the health of the employers v'ithojt nailing cuif< jicrl atmospheric examinations to cstncliih the range and dvrotian of cxyacu-r. EM003130 - -7- It is e caixacn practice to use chlorinated hydrocarbons to cm, electrical motors nc) various inatruments in two or more* department a 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 feund being viand freely vlthout regard to tho 1 yL oro- matica it contains. * In a fev unite heat, which has been the cause of variouo fatigue canes as well as the nource of many complaints, van obotrved. Time* has not permitted eny detailed study of the problems associated with beat and nolo", 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.tlnn personnel in charge cf the various departments with the assistance of tht* laboratories which are available tc then. The Kedlcnl Division has eervrd an consultant on making available approved typo analytical methods to be uced ir atmospheric tecting, analysis of urine camples, end to interpret the results that the analyst reports. In some departments the supervisor fces net felt that they had qualified personnel, eupp.Uos, equipment, cr the time to mnk" these indicated surveyo. In these cases, when possible, the Industrial Hygienic has carried cut the chemical and engineering services. In come instnr.cec th" equipment and time were not available to the Industrial Hygienist and he has turned to the inductrial hygiene services of the Texas State Department of Health for assistance cn a quantitative apprcical of the toxic materials known to be present in the atmosphere. These public officials have fcesn very co operative Id every voy in trying to further the general v:eUnbeing of the Humble employees. . i E PO03131 i -b- Tine does not permit ne to touch on mnny of the otbor problenr. Boat of which are as major el theso, thct have- been unco-vcrod, nor ie tlhe the meeting to report on the ecnitary engineering erpset o-' the work which has been carried out in closo cooperation with the civil engineerc of the Compcny. It ie sufficient to say that,ao a reeult of three activities-, th- various engineering standard* and guides have been rewritten with the viev In mind of mating it possible for the unlnitictod engineer to eupervior construction of adequate water and sewage facilities to protect enployeoc1 health This phase of tho problem soeca to have met with complete c.pjrovt 1 of Moaageiont. JWH April 12, 15^9 E MO 0313 2 i APrnCJXX SUI-yAHT OF FRZLH-HKART INDUSTRIAL EYGIEHE SrJRVZZ AT BAlTOWN Condition and Foeill tv Drinking Water, Fountains and Cooler.* Sewage Dicpocal Washing and Sanitary Facilitieo Potential Ploeaaeo Trenty-ons Comrunicable Dlooaoes Ten CoKunicable Diseases Shin Irritation (dermititia) and Systoxic Poioo.nlcc Departnont cr Craft Afj'cctru _____ By Rroccjrer.datlcn Turnaround and labor Gangs, and Twenty or tore Unito All Units end Pe rooms I Mechanical, labor, Proceocing ar.d Others EM003133 2 StW.UTT or raIIKIit\HT IWTJSTRIAL eygxei.t summer at airrcwi; Materiel or Condition Hydrogen end Organic Sulfides Lead Potential Diseases Eyo Irritation and Ulceration. Systemic Poisoning Plumb1sn Mercury Zinc, Metal Fueoo Chromates and Beryllium (SllEJjt Exp.) Silice and Aebestoo Mcrcurielisn Puma Fever, end Systemic Poiocning Lung Cancer and Skin Tumor Silicooic, Fiberoolc, Erythema & Cancer of Lungr Departments or Crofts Affec \c.o Er Pecocrotndnticnn Distillation, Light Eraic, Cracking, Treatero, Pumpir.r. Gauging, 1'nchanicai & Ct'irr:' Labor, Painting, Weeding and Burning and licchino Shop Instrument, Laboratory, Warehouse and Pilot Plant MochanicuI Fainting, Mechanical t Labor Brick Masons L Helpers, Insulators, Laborers ana Pipe Benders t E K>03134 3- SPKMAHY OF PHELIinNAPT INDUSTP, IA I, EYSIENE SUPVET AT BAYTOWN Material or Condition Silicates and Coho lust Sulfur Dioxide and Trioxide and Acid Mist Nitrogen Dioxide Potential Effectc ' Fibroele, and Poeeibly lung Tunore Irritation, Asthna, and Poisoning Eucm of Lungs Dapirtrent or Craft Affected by Recogmendationr, Contact, Straining and Blending, Cracking Colls and labor Treaters, Acid Plant, Battorles, and SC>2 Plants Acid Plant and Welding E HO 0313 5 t -u- SUMMARY OF PRELIMINARY INPUSTEIAl. HYGIENE SURVEY AT BS.rZWK (Continued) Material or Conditlon Benzol Toluol, Xylol and Heavy Aromatics Potential Effects Blood Dlcceoe one Cancer Bleed Dioenoe Varocl and High Aromatic Naphtha Chlorinated Hydrocarbona Heat and Noise Dermatitis end Blcod Dioeaoo Cirrhooio of Liver General Malalco, Exhaustion and Deafnooc Department or Craft Affected by PecominDndr'.t ionn hEZ Plant, lebomtory and Bottle Laundry MRK, SO? Plante, 1SFU, NRU, and P & C Unite Generally Deed Throughout Refinery Instrument & Electrical Maintenance Crcvo, Punpero, Boilor and Power Houses Personnel EMO 03136