Document wrJbRQJZ26yZNXXjORVNwB1Q4

'ij iiiiwwtgwitf.ffrf?-r^ xittwr*** cm % S' THE ASSOCIATED ETHYL COMPANY LIMITED jAiypstcretOffice: T H E A D E L P It I , LON' D O K , w C. 2 Mips s a ll communications u n til further notice to: A R T IL L E R Y H O U S E , A R T IL L E R Y ROW , L O N D O N , S.W. 1 J e tc phone: a b b e y 3 9 7 4 - 7 .% ic y m n is: e t h y l p o r t , s o w e s t , Lo n d o n /D irectors: H . E . B E O F O R O (u .s.A.) J .W .B O YLE H .B.H E ATH EVES N .A .G A SS L . N . H A M t L T O N (O.S.A.) J . B . AU G - K E S S L E R ( N ETH ER LANDS) R .W .SE LLE R S A. J . SIN GLE TO N E. E. SO U BR Y T . R . A . B E V A n (J fa iu r y in tf) OUR REF. O /ea YO U R R E F . Dr. R. A. Kehoe, Collega of M edicine, U niversity of C incinnati, Ohio. 3rd. ? u ly , 1944. Dear Bob, For your Inform ation I enclose copy of a c i r c u l a r l e t t e r s e n t o u t by th e S h e ll Company t o t h e i r v a r io u s o r g a n is a tio n s th ro u g h o u t th e w o rld . am u n a b le t o a t t a c h th e draw ing s in c e , u n f o r tu n a te ly , f o r th e moment I have no c o p ie s a v a ila b le ',, ;^ \ Sin^tely i ^ ir s , . I .`V - ' T . R. A. Bevan. O rig in al by steam er: copy and enclosure by airm ail. H 0007301 * DISTRIBUTION: For attention: A lgiers Bombay C airo C alcutta Capetown C asab lan ca Colombo Dakar Istanbul ' K ingston Lagos L e o p o ld v ille C O' P ..Y... . ' /ea ENGINEERING- DEPARTMENT (THE ASIATIC PETROLEUM CO.LTD) CIRCULAR LETTER ' No. 1 6 6 - 9 . 6 . 4 4 . F or Info rm atio n Only: Lisbon M alta M elbourne Mombasa N airobi W ellington R ey k jav ik Takoradi , .v A ll Area Managers: (Area C - 2 co p ies fo r Chunking ((" M - 2 " " Azores ( " K - 2 "" " F aroes S h ell R efining & M arketing Co.Ltd. Shell-M ex & B.P L td . (E. & P .O .) B urm ah-Shell, London S h ell Leaseholds E agle O il & Shipping Co. L td. B .P.M . Export Department A v ia tio n D epartm ent {+ 2 c o p ie s f o r Bermuda and Newfoundland) "T" Department S.T.A. Department Venezuela Department L u bricating O il General Department REDUCTION OF HAZARDS IN'THE FILLING AND HANDLING 0? LEADED GASOLINES D uring th e p a s t y e a r some s e r io u s c a s e s o f le a d p o is o n in g have o c c u rre d among f i l l i n g shed o p e r a tiv e s due t o e x c e s s iv e in h a la tio n o f th e v a p o u rs from le a d e d g a s o lin e s owing t o war c o n d itio n s . The c o n d itio n s Y/hich g iv e r i s e t o th e s e c a s u a ltie s have been in v e s tig a te d by Dr. R.A. Kehoe a c tin g f o r The A sso c ia ted E th y l Company L t d . , who have - i n c o -o p e ra tio n w ith th e O il Companies - p re p a re d a booklet summarising the co n d itio n s resp o n sib le fo r th e hazards and co n tain in g recommendations fo r th e ir avoidance. Copies of th e b o o k let are enclosed w ith th is C irc u la r L e tte r and th e recom m endations c o n ta in e d t h e r e i n a re t o be re g a rd e d a s Company r e g u la tio n s in a ll areas. Although the c a s u a ltie s have Occurred under th e p ressu re of wartime c o n d itio n s , th e r e i s no doubt t h a t th e p r e c a u tio n s l a i d down i n th e b o o k le t a re n e c e s s a ry b o th now and tinder more norm al c irc u m s ta n c e s , p a r t i c u l a r l y a s th e u se of leaded g a so lin e s has become more g e n e ra l. I t i s n e c e s s a ry to s t a t e t h a t th e h a z a rd may a r i s e in te m p e rate c lim a te s i f th e removal of vapours is not adequate. As r e g a rd s c a n f i l l i n g i n s t a l l a t i o n s , th e reco m m en d atio n s-d eal w ith two ty p e s : (a) Permanent o r semi-permanent I n s ta lla tio n s , and K * o !' f"! < r. u> i j } i (b) Improvised, and m obile I n s ta lla tio n s . We w ish t o make i t c l e a r t h a t an im p ro v ise d I n s t a l l a t i o n i n c l i any f i l l i n g p la n t which h as been in s ta lle d in a b u ild in g w hich was n o t b fo r th e sp e c ific purpose of housing such a p la n t and which, th e re fo re ,is i n s u f f i c i e n t l y v e n tila te d . Most o f th e can f i l l i n g p la n ts which a re b ei o p e ra te d f o r th e S e rv ic e s come i n t o th e c a te g o ry o f " im p ro v is e d " . R eference i s made in th e b o o k le t to th e c o n tr o l o f th e le a d c o n c e n tra tio n in th e a i r in th e b re a th in g zone o f th e workmen, and th e metho f o r c a r r y in g o u t le a d d e te rm in a tio n s i n a i r i s g iv e n i n t h e A ppendix. We hav a rra n g e d f o r th e s p e c i a l a i r sam pling a p p a r a tu s t o be s e n t t o th o s e a r e a s wher. %ii th e Company h a s a L a b o ra to ry and, i f o th e r a re a s can a rra n g e f o r t h i s t e s t i n g to be done by a q u a lifie d chem ist, th e y w ill be su p p lied w ith th e apparatus i f th e lo c a l Management c o h sid e rs i t to be n e c e ssa ry . For im provised and mobile p la n ts i t w ill be necessary to provide s p e c i a l c lo th in g and in tr o d u c e r o t a t i o n o f la b o u r a s l a i d down i n th e b o o k le t i f , in th e o p in io n o f th e lo c a l Management th e exposure to le a d vapours i s lik e ly to be harm ful. As re g a rd s n e c e ssa ry a lte r a tio n s to b u ild in g s and equipm ent, th e se should be put in hand as soon as p o s sib le . The b o o k let s ta te s th a t m echanical v e n tila tio n should be o f th e su c tio n type designed to remove vapours a t t h e i r p o in t o f o r i g i n and, f o r y o u r in fo rm a tio n , we e n c lo s e h e re w ith two p r i n t s o f our Drawing No. 88011 which show d e t a i l s o f vapour e x tr a c ti o n d u c tin g a s f i t t e d to a f i l l i n g machine in t h i s co u n try . T h is arrangem ent has proved most e ffe c tiv e in reducing th e g a so lin e vapour and le a d co n ten t in th e f i l l i n g machine atm osphere. Two m ain d u c ts a re f i t t e d to th e m achine, one a t a l e v e l o f ab o u t e ig h teen inches above th e f i l l i n g n o zzles and th e o th e r ju s t below th e bottom o f th e t i n s . An in v e rte d cup about 3" d i a . i s f i t t e d t o e ac h f i l l i n g n o z z le in such a p o s itio n th a t when f i l l i n g , th e bottom o f th e cup i s Ig " from th e t i n to p . The annular space between th e cup and th e nozzle i s connected by fle x ib le m etalic hose to th e upper duct. Light sheet m etal tubes are also c a rrie d from th e upper duct to th e s n iftin g valv es above each p a ir of f i l l i n g m easures. These c a rry away any d rip s or vapour le a k s from th e s n if tin g v a lv e s. The low er d u c t i s f i t t e d w ith open s l o t s a b o u t 4 n lo n g b y 2 Ww ide o p p o s ite each t i n and draws o ff any vapour th a t c o lle c ts around th e b ases of th e t i n s due to splashes and leak s. An 18" d ia . e x h au st fa n hav in g a d isp lacem en t o f 1400 c u . f t . o f a i r per m inute, driven by a .15 h .p . flam e-proof motor i s f i t t e d in th e w all o f th e b u ild in g ju s t above ground le v e l and th e two d u c ts a re connected t o th e su ctio n sid e o f th e fa n . With t h i s s e t up i t has been .found th a t a vacuum of about w ater gauge is m aintained in th e d u cts. T estsvw ith th e explosim eter and le a d e stim a tio n s ta k e n in th e v i c i n i t y o f th e f i l l i n g n o zzle have shown th a t w ith in p r a c tic a l lim its th e whole o f th e vapour ex p elled from th e t i n s i s drawn away in to th e d u c t. T h is same p r i n c i p l e w ith m inor m o d if ic a tio n s c a n be a p p lie d t o alm o st any make o f f i l l i n g m achine w h eth er o f t h e w eig h t o r volume ty p e . . 0007303 I t has been found th a t one o f th e w orst hazards due to g aso lin e vapours i s caused by pushing uncapped tin s along a g ra v ity conveyor. Blobs o f s o ld e r on th e bottom o f th e tin s : bumping on th e r o l l e r s combined w ith th e f le x ib ili ty of th e sid es causes a fin e spray to be e je c te d from th e f il lin g h o le . C onsequently arrangem ents should be made t o cap th e t i n s a s soon as possible a fte r leaving the f illin g nozzles. I f i t is e sse n tia l fo r the t i n s t o be tra n s p o rte d away from th e f i l l i n g machine b e fo re th e caps a re pushed i n , th e conveyor sh o u ld be covered i n and co n n ec tio n s made t o th e e x tra c tio n d u ctin g to draw o ff th e vapour caused by sp lash in g . I f you consider th a t i t is advisable to f ix up sim ila r arrangement in any of th e f i l l i n g sheds in your area and are unable to o b tain su ita b le fa n s f i t t e d w ith flam e p ro o f m o to rs we can su p p ly them from t h i s c o u n try on re c e ip t of your cabled advice of th e siz e s of fan s req u ired and th e cu rren t ch aracteristics. . F o r your guidance we w ould m en tio n t h a t th e s i z e o f f a n d e t a i l e d above is su ita b le fo r a sraall f il lin g shed having one tw elve p o in t f il lin g m achine. Would you p le a s e acknowledge r e c e i p t o f t h i s c i r c u l a r l e t t e r and advise us b r ie f ly of th e a lte ra tio n s which you consider i t n ecessary to make in th e o p e r a tio n and c o n s tr u c tio n o f y o u r f i l l i n g p l a n t s , so t h a t we can obtain sanction fo r any co n stru ctio n al costs involved. I f considered necessary you should cable on t h i s p o in t. (S ig n ed ) E . R. CARTWRIGHT Chief Engineer E n d s . Booklet Two p r i n t s D rg. Wo. 88811. f G0Q73u4