Document vVrX9B67wDbKa9jLYD41GkBM6

FILE NAME Manville JMA DATE 1939 Oct DOC JMA325 DOCUMENT DESCRIPTION Manhattan Stratford Plant Survey by Metropolitan Life Insurance 9826 30 rc f, y ^' Stratford Gana A third survey of this plant was conducted on October 12 13 and 16 1939 by the Industrial Health Section of the Metropolitan Life Insurance Company The two previous surveys had been made during March 1970 and June 1935 This plant is engaged in the asnufscture of pecking garkots and brake linings Since the previous surveys the woven brake lining processes JS have been eliminated and new processes have been installed ene eo ome te . _ ee 2542 PLANT VERSTRUCTI.5VERSTUCI.5 VERSTRUCTI.5 The plant is housed in a number of one and two story brick buildings of modern construction Ample natural illumination and ventilation are supplied by numerous side wall wincors and skylights Offices are located in separate buildings apart from the menufacturing departments PLANT PROCESSES PROCESSES Bldg 6 Fant 12. Shast Zacking _ . o In this building sheet packing is mede from which brake lining gaskets and packing are stamped or out Boom vo. haa Asbestos Labeatas used in meet packing is prepared for use in a crusher and opener The asbestos is graded on screens The asbestos passing through the opener is dusped on the floor and then hand shoveled into the opener The opened asbestos is then conveyed by air to a hopper on the roof and dropped through pipes into the grading screens or directly into a hand truck Serep material is ground in a pulverizer then conveyed by air to hoppers on the roof and dropped through pipes directly into bags The lone operator is this rooR La supplied with an approved dust respirator This room opens directly inte the dry mold six room and the main airing and roll rosa Elace the previous survey the equipment in this room has been improved Exmple 6 of 1935 survey and sample 3 of the present survey show that good results have been sttaized | Fry Hald Mix Room Naterial for the dry mold zix is hand scooped from original con- teinera and dumped into a barral on a scale Most of the asterials weed pre ee ee 8 eee mem ee -- tee eae 02491 0249102491 02491 02491 02491 -3- kept in loosely covered or uncovered containers After the batch is weighed out the operator a flight un rries the barrel of stairs to a platform and sumpe then from mixed batch is the batch into the : mixer The dropped thebottonofthe * mixer into atruck The materials used in there batches contoin seberte esco lite resin santicizer plasticiser and scrap The rubber mills are located in this room At the time of sampling one of these wills was operating The rubber is thrown around the floor scattering scattering some soapstone dust Ressirators are available to the operator but as noted that respirator wae ee . - was not word ay . ote ~ owe No exhaust equipment is used in this department building This room is located at one end of the # and opens inte the mixing a roll room The operations in this room are intermittent Extaber containing large quantities of litherge 18free lead and alca are weighed out we from original containers into a pan on a scale The ties is ressived in baga " These bags are ripped open down the middle and allowed to lis on the floor It aues notAee that < "eonni/dor quantitiesquantities of the litherge and upon they remain mica sare spilled the scale and floor bere were allowed to t The elsened shift until close to the end of the shift floors and scale wore then by ress batch dry sweeping The complets contains liquid bakelite sulphur nics asbertos litberge aroclor serep and ruboer The percent of litharge in the batch varies from 30 to 35 The weighed batch is the tracked to the mixers | into which it is dumped and mixed with ssline and erbertos The opereter working in this department bed been at one tias supplied with a dust respirator but preferred to work without it complaining that it interfered with hi glaskes he also said it we too bot for confort This un stated that he has been engaged at this work for about seven years 02492 02492 02492 02492 02492 ee ree ee ee ey - - ee oe tempter aisers In thik departnsat the batches mixed with " in closed -- The mixed acterial is then hand shoveled from the mixer into the ralls One roll is hot the other cold The asterial adheres to the cold roll The naterial is rolled to the desired thickness From the rolls the asterial is taan rum onto cutting tables where the sheets are cut to length The gasoline Used is recovered in a condenser located in the esa2 room Free abeets - rings gaskete and packing are stamped out on power muchinsa , 2: One end of the building is used for storage of raw material Asbestos board used in making clutch facing and a spesial astarial called 18 is made in this departac . .__ Scrop material and new asbestos are hand dumoed into paper bestore mixed with water and starch and worked to the proper consistency The pulp is then passed through the rolls to the required thickness The 18 material which is composed of usbestos atomized metallic lead elum glisonite graphite und scrap are zised in a bester and the pulp pumped to storage tanks The atomised lead is about 200 mesh The Lead is dumped on a piece of cardboard on the floor in front of the beater and is sieved into the pulp by bend shoveling into a sieve resting on the top of the beater The wet pulp is run from the beaters to storage tanks From the storage tank the et pulp is run inte troughs | coffine where the water is drained out leaving the solid material in the trough The solid material is then transferred to a heated press share it is pressed to required thickness removed and cut into strips by hand It was noted that the operator handling the stomized isad uz well on others in close 02493 proxialty did not wear respiratore Asbestos board is cut to sise for the punching machines Facinga- are stamped out on aschines by men and wiped sad stecked on skipbsy girls The composition of this board is practically 95 or more asbestos ' * Feeings cured and then finished The finishing sorations include grinding surfaces and edges on Blanchard Cincinnati and cylinder grinders drilling and shot blasting All shines this department are equipped . with exhaust systems On the Blanchard grinders and drilling operations these exhaust systems are ingmented by the use of compressed air At the time of mechine this survey the compressed air line on the grinder 758 ausple 19 had been moved out of position causing puffs of dust to be dispersed into the . atmosphere with each revolution of the grinder This condition was readily remedied after attention had been called to the condition . Considerable dust dhering to the clutch facings is dispersed into the atmosphere when loading the the on sachines and restacking facings the skips No provision is made to en| trap the dust at these points Dry Hold This is & so speration The mixture for this operation is made in building 6 At the time of this survey machines tere being installed or renovated so that teate taken at this operation would not have been represente- tive Therefore no tests were made a Bresold fhe asterials used in the wiremold batch are alzed in small nizers 02494 02494 02494 02494 in partitioned area on the main floor These acterials include asbestos hardwood pitch sulphur laapblack graphite asbestine pondered white lead and index oil The hardwood pitch is run through a grinfer four times to the re- quirad sash The pitch is hand scooped from the container into the grinder This grinder is enclosed and exusted The powdered white lead se wells wells the pitch and index olla are kept in open berrule just outside the partition on the main floor The compounded batch is used on the wiremold chine which in ise loca- ted in this partitions The con engaged at batch sixing wear dust respiretors but the aen at the usenine a fow feet from the mixer are not so protecteThde mixed setori^lis pressed around a wire backing and is used to anke brake lining Information was advanced that plans and appropriations have been as~ e to provide dust controalt these operations Kolded and rubber brake linings are finished in these departments The operations consist of grinding and drilling All machines with the e2047 tion of a few small drill presses zachines 360 277 and 93 are exhausted | Cent 28 - 48 Preasing In this department L^brake lining is shaped and pressed in a~-n- drels Soapstone is head dusted to prevent the linings from sticking The operator on this job wars an approved dust respirator The dopes used on the brake linings and clutch facings are prepared and stored in a separate brick building All solvents are kept and prepared in olosed tanks The min solvents used are xylol formaldehyde cresylio soid and actors The soutons is stored in tanks outaire the building The -- 02495 0249502495 02495 02495 02495 07- prepared suturanits pumped to the saturation room is required " used in the saturation is not a cold tar product The asphalt Other operations and departments include inspection sasembly of parts and packing of finished product alto a machine shop and stock section These operations are located in the newest section of the main building , no dusts produced by these operations | sos A tals There are PERSONAL FACKLITIES AND PARTING PARTINPARTGING ot rd Ample washing and toilet are facilities provided Drinking rater in supplied from mechanically cooled bubbler fountains| & restaurenits ilable to * all employees & first aid room under the direction of's of's full time nursent nursent 9 is maintained Housekeeping in general is good Aisles are well defined and are e always kept free from obstructions. Vacuum is employed on the rafters walls and floors in the main building It is planned to extend this to other buildings~ Safety meetings are held once a week at which time the employesal representatives as well as the foreasa are present end take on active part in the proceedings KETHODE OF SAMPLING AND ANALYSIS ANALYSIS ANALYSIS Atmospheric dust samples were taken solvent fun with the interferometer at the ad withthe impinger and the breathing level of the workmen at representative representative operations The interferometer is en instrument designed designed for use in detecting gases and vaport The impinger developed by the United bred States Public Health Servies is the standard method used in this country Air the Health Service Harlth Bulletin Public 4717 Intermination and Control Public Control of Industrial DustJ.J. Bloomfield and .. DallavalleDallavalle 1935 . i a ee nee ee - : 02496 constricted Thetube ends ina orifice under the surface of distilled veter contained in a flask The air passes through the orifice and impinges upon a ginse plate which breaks up the eir streem allowing the dust particles to sample set and entrapped in the water in the flask a Alcohol is added to the an a preservative to inhibit the solu the and also tion of fine particles prevent the formation of aggregates of -.... the fifninee partiales by clumping Suction is supplied for dresing the air samplethrough the impia er by meansofanejector or else an electrically driven pump there compressed i | air is not available to actuate the impinger The dust counts were ande by the methods and technique developed and used by the United States Public Health Service _ The | following table offers comparison of the results of analysis of samples taken at identical locations for the 1915 and 1979 surveys As sabestos is in- volved at prectionlly all operations dust counts are given as total esunt la " millions of particles per cubic foot of air * 02497 er o ceng -10- CONCLUSIONE CONCLUSIONE NE RECONNLATIMS RECONNLATIMS RECONNLATIMS . _., In the azbestos room the ecunt at the crusher high 542ple M Apparently the operator que overlosding the pansin Crushed agbastos was falling. upon the floor necesaltsting frequent sweeping and hand shoveling It is recommended that the amount of materisi that can be handled without spilling on the floor se ascertained and controlled Enclosing the crusher would fas Pillows Pillows Pillows also be of value Since the other operations in this room are now well c n- Pilows trolled se svidenced by samples 42 and 3 it is not mosssary to install an elaborate system for this one sachine The operatoirs supplied with and wears the proper type of respirator The dry sold batch neighing is a dust disperzing operation semple 4 The operator is exposed to the heavy concentrations because of the class prorisity of his face to the containers while scooping out the ingredients and carrying the weighed betaohp the stairs to the mixer platform It is recommended that all batch weighing operations - dry wold wire- mold and rubber compounding - be done at one point where effentive control by exhaust rystems should be installed Hand handling of materials should be eliminated as much as possible The resin bakelite used in this batch asy produce a dermatitis Therefore it will be necessary to provide some protection for the skin if the resin is to be handled by hand Enighed batches should then be kept in closed containers when transporting to the department where they are to be used Tacuum system should Cleanin Cleanin be used for all cleaning purposes The mixing and rolling operatione do not present any dusty conditions with the exception of mixers 332 and 313 sample 6 I. At this point conrider- Z J y | !! . , -11- able mier oner card litedust is dispersed when dumping and mixing until the asterial HHaakeke becomes thoroughly wet This is for a short time only The floor arsund these aixers in slippery due to the spilled material and moisture These operators could be adequately protected if they were supplied with and wore approved expialite dust respirators while handling and dumping the The floor should be kept free of the dust to eliminate the hazardous slippery condition that exists ; 7 Concentrationsof 12 to 160 parts peralllion of geoliageolia vepore sere detected in department 19 airing and milling room This concentration is fer belowsoprosisately 1,000 parts per millionwhich is the zarim con- i Bad centration allowable for prolonged exposure vat The batch weighing operations in the rubber compounding room are definitely has^rnousunder the present methods of operation Samples 7 and 14k 14k14k 14k show concentrations of lead far in szeres of the toric limits which have been determined to be 1.5 milligrams in hour day The dust respirators supplied iran to the operator are not for lesd dust As this operator has not worn iran supplie~ approved years weaver the respirator him and has been exposed for a period of seven weaver ' Applied on sad off it is recommended that he be physically exsained SymptiesSympties of lead Applied poisoning are given in the rear of the report for the inforsetion of your Applied fl | physician . bea - " Semple 15 does not indicate the seed for any further protection for me the operators working in the vicinity of 4 beater other then the proper typetats7 of respirator is this is an intermittent and comparatively short operation the insistence by the foreman that the respiratore be vorn should not be s , serious hardship for man ample 19 in the finishing department between Blanchard grind sy a 371 and 768 shows 6 definite sardous condition Although this result wes 02499 -13- obtained under an abnormal condition due to improper setting of the exbrust exbrust system it serves to demonsttrheanteeed for periodic check up of these systema by the engineering staff The lead concentration found at this point is three times graster than the toxic linit Ecaple #il betwe na chinos457 and 455 indicates the more normal condition at the Blanchard grinders Semple 24 department 28 shore 9 lead concentration approaching closely to the toxic limit This condition could be eliminated by weens of one central batch weighing und mixing department as has already been suggested for other batch weighing operations _ The saturant room did not show any dangerous concentrations of solvents Sixty parts per million of zylol were found The maxique concentration for prolonged exposure of xylol has been estimated to be less than 100 parts per aillion It is recommended that when new processes are to be installed a stuly be azde of the various ingredients in the material as to their toxicity and the proper protection applied at the beginning of the aperation and shile it is in the experimental stage a done Taking into consideration the emount of grinding and drilling the counts found were low indianting the efficiency of the exhaust cystems The hesards in the plant are confined solely to the batch weighing soi eixing operations Proper control of these operations will eliminate the health hazerda in this plant vr The report of the survey made in June 1935 contains a discussion of health hazards of the toxic substances used Reference should be made to this report in connection with the findings of the present report 02500 02500 02500 02500 02500 02500 ry . a * e - - ee =. ~ * : . 7% - s _ no era I mw - - - -~ a . oe 1fe. led led _ Millions Dust Particles per cu ft.air sag led Mulligrana per Load per cu ft Willigrams Lead per hF per 10 2.0 19.319.3 116 300 a. 3.9 73 - , 37.0 6.2 38 ~ 21.3 32.0 24.0 121 a = 3.3 . 0.001 . a 0.353 cor . 30.0 9.0 . 49.0 594 594 58-6 X 0.3895 35 35 137.0 107.3 12.0 - 270 5.0 270 0.3039 - me 107.3 : Stratford N. Sample Sample Date fi Sampling Cu.Ft. Milliow Air Dust Particles Sampled por cu.ft sampled sampled 1935 Hl igrams Hlligrams Lead par cu.ft. . 1 . 2 6/25/356/25/35 . . 4900 -- 6 8.5 7 . x 4.1 te Sb TAL 20.0 : . Lae . rs - - . cote 2 < . * 49.3 a) 2 Lo, - 2.3 0.00038 _ . sa eey - Sate la . Milligrams Lead por 10 dex trpe of Duat Remarke 1939 Survey : tek ate Asbestos 1.man approved dust respirator word Ko just control applied at this srubsrube ero sr rubeo eoe : Scrap hand shoveled from floor inte pulverizer . Asbestos scooped from floor by hand inte opener PE -22* Asbestos strap cardolite resia plasticiser All materiale hand shoveled from original containers into barrel on the scale No respirator worn dust contral applied 0.136 . wy) Litharge asbestos rubber Whiting mica sulphur * Broclor = Machines closed while running wre Cardolite : Considerable just given >off when dumping and until esterial becazes vet Litharge asbestos rubber whiting nica sulphur aparlar 1 man intermittent operation respirator had been supplied but not vorm no dust control applied -. No fast contral applied - ee 33.0 42.0 28.9 54.0 70.01 29.0 76.2 18 ) 26.0 07.0 oo Q 36 2.5 > 4 1.1 Qo w 305 c 6.4 39 39 39 / 0.0002 . 3 2.07 2.3 ' 3 Ta 1.2 1 + 5-3 20 20 5.4 38 38 - 19 7aa 0.0116 4.5 bf 42.T 1.2 -) 13 26 105.0 1.4 . - 11 6/25/25 56.1 2.4 12 46.0 4.4 _ 17 6/26/25 6/26/25 ata 106 . * 14 aug 1.8 - 12 25.4 25.4 6.5 3 2 een , : Asbestos Netallic lead zebectos grochite gilaznite gilaznite a . Asbestos ~ . fl Mizers and rolle closed while operating Scrap material fed into bestars by hand Hotelli lead imped on cardboard on the floor and hand sheveled into a sieve over the benter Respira tors not worn No dast samiral saaliasi Pulp run Ints troughs coffins and dehydrated Esterial then pressed and sut inte strips - 1 man lotts 1 can renOTOS excess ard from thine 1 girl viging adges of clutch fazing no dist ose re) soclicts Cutting board to size floor cleaned by dry swBI ing and shoveling sampling period santral oliede oliede during No dust No just control`applied control`applied The compressed sir line used to supert the ewe : ** sos fF ^' 3 17 7.6% e ~) 1.2 " A v7 Set 50 50 26.0 : . 38 bat 38 + . oe . ete meee eee Lae wee ap pene oe . 23.8 2.1 19 ; 16.0 14 0.0126 408 . nanan . 87 cep : ee ene eae 42.0 29 | t 0.0003 , 50205 41.0 . 2.9 17 0.00034 2.12 ~ a !! 6/05/25 12 : bd 2 lene 17 5/265/26/25 /25 es rere ee . ra -_- 3) co * cic ninitnaninine ntl and Pulp run Inte troughs caffins dehydrated Material then pressed and cut into strips 5607 46.0 2.4 $8 Asbestos 49.4 1.6 eg cs eee ne me oe meen aerwee ne ete emma nemrn mem . ; cornmoer 209 1.8 1 man locis 1 can rOZOTOS excess board from askine 1 girl wiring edges of Nutch facings ne just como palaamallada palaamallada tee Satting board to sise floor cleaned by dry STOOF= ing and akaveling during sampling period Ma dust eintzel arolled No just control applieds 18 . ee - ; . 15.4 6.5 3 a) : compressed 3 * The air line used to augment theex- eres eee tne meet euaanue hhaauusstt___ut ut line I haust__ ut haust__ ut haust__ ut cs vemareen TS RS causing puffs of of . dust to escape the exhaust hood be dia^ersed ccm me metre me nes mremmrmmennn en and into es - ee the atzea _ 22 4 30 42.5 2.6 42.1 . ne 12.1 0.0037 : < oO . mo . Floors svept dry during easyling periode Exhaust applied In 1935 operator blew dust off fezing before reveraka sides Exhaust uralied uralied .5.0 8.3 168 bad . . 3 106 w C) 0 q 5 ) 8.2 0.3325 o 4 20282 wee ~ 10.0 2.4 fl ee 3009 1.8 oo - we ew ee me oe eee ee a g on" 43-9 ween 102 tee 7% ee 4q em oe t) vee .. - meee 7 aaamned - ee ; ee ee Lene. . applied --a ae * Arbestine applied usbestos NoBuat c^ntrol Respiraters supplied mixer white load operators on machine in index oila Es room do not rear hardwood pitch respiratore sulphur black graphite Pitch Pitch mun through grinder Your tince Grinder one closed and exhorted _ . oe Only machines 360 277 and 93 not exhausted 3000 420 22.0 49.0 42.0 2.5 J 0.00037 0.13 cece 0.00037 emeree 0.13 eee Jane 1.1 = % 0.0003 v 0.105 1.6 Om 1.4 o uw be4 4 fF 25 6/25/35 309 26 . 11.3 . _ 18.4 12.0 coe ae . Exhaust applied _ - Asbestos . Exhaust applied ; . osExhaust applied Exhaust applied Soapstone ee mreneeee No dust control applied respirator suppliedssu-plieds- a ) Larch FUST ; ; _- - Sot Over ^beater se mo wm 5.83 load