Document ymX4719bk68GJVOVe11D7dDME

. 'CC^ius'^: xyy ';i..r ;||piiai^ v<~ TETRA ETHYL LEAD PLANT* Maxell l6g 1931* SS5wsfsfe '*'....'' jlmifme ?, >- % VSv v *h ** - \ f-W ., Vs-T S|l3lS||: *'* s~ * - -V"S?2&&S&*??* : <*J'? ' V"" "MAbu f ao t iSr ih g d iv is io n X ATTN:;MR.: C. D. PORCH, ASST. MGR. i;ss *> ^ 4- ' \ -7*&$. ** vr>*^ **- ^ INSPECTION OF TETRA ETHYL LEAD PLANT BY?DR. KEHOB, FEBRUARY 25. 1931 A C-'.jswf*' ,'.;'i.f ,,,In reply to your letter on the above subject, I wis2krto ^inform you^that the present condition of the air in our buildings is*better than it has been since the early part of I92S. This" statement is corroborated by the fact that our present analyses of the air in the buildings contains ;less contamination than any previous test and the stipples^-as shown,by our hospital record, are lower than they havefebeeni Below is the average number of stipples per man for.^the years of 1923 and 1931* Location5- / 1923 -1931 > hth#and 5th:floors 1 2.27 1*57 . Stiil-'Floors , j 6.22a#-I.Oo , Furnace#-# * 5*1^^ 1.0.66 Alloy*.Building- r * 3*^3 - Sl*^ -, Blender^felM?. - jM* * < 1.66- '.g? 1.30 Yardfe:^;#fC >*, 6*r62^| 0*37 ` sgfS .. " '%r ~`i ife ifivefethe". above information because we do not wish you to u ?* ' -'j^We- wib -^0 render at; this- time a brief history on the progress ^ v#5":I:e|i^^Vi^|^befcoiditi6hs:16f::!our: building. During the month of ? -p*.,.^<*.>^^Pllayqe^js|J19o2hg|^fawceh'-rsftlaorote#doif:oeuvfe*fri^rsbtu' iltdeisntgs . ftnWse acmopnlitninguethdethaiisr aatt bvarriieofus---------JJ.-------------------------------------------------------------- ------------------------------------------------- ----------------- -* J.V4- _j.. V^a . interyala,juntil March, .1930^-At that time we felt the information of- our chemists to take .j We then correlated grouped the'men roperati ofcand^averaged the stipples of each group. ,, The would, in most oases, coincide with ?&.r% s stream ib.-s colaf^L^I This?-asilli ;of air nf -obhtandnatiohts^;*:?'^;'' only"and the blas^%V.f^|; ^ the door of the 5tv coolihg quantities of air regulated - so .that consequent?# blown into the chamber and these chambers at all .-Ofr&Cetkjslr--,iw-*pi :. timeis* Thi.s.. "Was dbne' to prevent' any air blowing out into the main room; Jwher?eerthe*rmenare .wprKin^*l1.-1%l;:'%:r ", * > *r `Jr"-e> '% m - 4 '_ His-,'suggestion! tb,eliminate brushing the tops of both alloy cones and hoppers and' substitute an oily cloth, will be complied with ' at on* ce*','^'I "J*. '**' *...... ^>ijg*r ^ it ' ^^^ *" *1 ''"'^7^ " ^ : ' He mentioned' the use of. air masks for workmen repairing the furnaces* -This is^ommon practice to equip all men with air masks . during dismantling of the furnace. All of this work is done by the men in this operation and the furnace is cleaned before the mechanics are requested to make the necessary repairs,' The mechanics' are supplied with the necessary clothing and are compelled to bathe before leavingsthe plant. The suggestionj tiie BlendinS plant included in our air testing programs will be . done. . Another-item D#*','Kehoe mentioned was the high concentration of lead in the air/dufiring _the time the autoclaves are discharging. He suggests that ,;the^,:.may be^,soathing wrong in the valve assembly. This is impossible because if the valve assembly is not absolutely tight we would show-fitdecided drop in pressure on the recording pressure chart.'-V We fbel^that- the high concentration of lead is caused froaCthets-oem: of^/the.valve being exposed when the valve is opened during the;. discharging^period* This however will not come out of the enclosure duegto;;our present method of ventilation. Since .... ,..the volociijs^of ,the . j&j^assingr.by. the front^doora of, the autoclave is approximately; 17QJ|ftl per minute it is hardly conceivable that any odorsVget- out into'f^he room"*? We have an operating rule that not more.Tthanttwo`-o^theLpeht^doors be opened-at any one time.- - . 3;We"hayb;>s%yerk^^^^^^^mak^er*doors in front of the autoclave enclbsure^wtiCsb^as ^b||^lbw3b:'- front doors to close while the ' ; 'autoolav.e^lwpha^ge^l3^&l'Blopened*xf'-Dr* Kehoe suggests; that all of these* be'"done*' We-will comply with his request. *, : "He mentions'th^use--of4water;,on.the floor of the Alloy * buildi"ng*|:'Wedb -us^|aw;-ddat^molstened with oil"which works very. Tg&SgMR r*xjt*3 affef'submitted to Dr*? Deuel'the workedsiriS&e Alloy and also menr *&7,. , > , ** .^ > x-tC? present efforts:;^ I am case yon to reply to to have X am also a on the analyses oflthe?}air, in "liliSS c\i ru o '-U blr siW^ \^r~' . "--':f'r^;."-::;. : - -m- bmi - JvV lv^f' f U / j,Sy i'.-. -iiifJpiti ... . J^-.V,(-' .................. b.<S$ -v ^\ ys. ini*?; ~: ............... '>.': * '-,r<S-!w~- * > * ! - s 'JS ~ ,,. 'S Jfclie hazaTdi''^^^pl oacenfcrate our c^- feffeC, Iply^th^you in V J *.do'- not^intend fV-*-! ^enjinjthe past ,, Icbnryour.office. "... *7im&;z....~rM" inland* s recent reports***. * & -< ^#yaliroWp ** Hg i ^Sw BI i-t'w V ^1*. 3g& g *V u- ^f * <--r - i?b;