Document mBm29ErdnY6ZRrxv25d5yD1Y4

TA M CLEANING CORRESPONDENCE 1 Mr. William Neman Ethyl Oaso.i ine Corporation Mutual Hoiae Building Dayton, Ohio Dear Mr. i!cwnar ; Y?e are retiming h^rervi th the booklet and I am tabulatiing our several comments below us they cam to use (1} The first question one asks is v/hether such book as this is desirable or necessary. I believe it is desirable in that it makes for easy explanation of tank cleaning practice and avoids the fooling on the part of the listener that he is being lectured to. One would also have to consider whether the cost of an illustrated booklet would justify differential in price over a book that is merely printed# If the cost is not prohibitive, certainly it is the best way of getting the material to the listener. (2) There are several points very neatly brought out in the book, such as methods of keeping the manhole cleaned, methods of prevention of splashing of sludge, etc. It night be desirable to add several pages showing pre ferred methods of cleaning within the tanks, whore sludge is %vet and in instances where it is nearly dry. One night also illustrate the beat method of removing sludge from seams and cracks. (3) The section on pump cleaning should be a separate booklet if reference i3 to be made to it at all. Authority Men and others concerned with tank cleaning are not usually responsible for pump repair work. Consequently, it strikes us that this material is best omitted from this consideration. (h) On the first sheet headed "Tank Cleaning" changing the position of items 1 and 2 and stating the purpose of the booklet first seams to us a more logical order. (5) The order of pages 2 and 3 might be reversed or a new picture substituted for that on page 2. The picture tfE" 0022539 Mr. W. Newman - (2) - August 22, 1941 on page 3 would be very good Tor as. opening ploture, since the one on page 2 show3 the tank cleaning already well under way. On page 2 instead of a picture, it might be very interesting to have a graph showing the relative frequency of reasons for tank cleaning. This material could be obtained from Oscar Lewi3* study last year and might suggest to some of the readers that tank cleanings are done more often than is necessary, as we know. (6) The p_ ic rare vu iytVpt? jf 13 uoriniuQxy DQu tulCl XU strikes us that the explanation following it is unneoes- sarily long believe the v/hole thing could be boiled down safe into a in one cfeawsesiesntennoct ens,ecp-e--o-s-i-sn--at.ir.n.i.lg.y.....so..auf*rte* rthin1natkwQha0taSisQ Qf the other material* Tory few people oo w-*>h.om you talk will bo able to jump from par cent to parts per mmiilnlioi n to milligrams and keep relationships clear. It would be well to retain on that page the statement that you have on page 5, that no instruments are of aid in determining the axlstance of load hazard. (7) Somewhere in the booklet rax'erenca should be made to die American ?etr< ileum Institute rsgulutions or recommendations for tank cleaning and along with this reference statement should be .made wherein our regulations or recommendations differ and are to bo added to the others. (} The point in the second paragraph on page l is well taken. The matter of location is sufficiently important that the second paragraph might well be placed first. {9) Oh page 44, rather than protect the truck from con tamination by sludge by means of burlap or sacks, it would be better to clean the equipment before moving it. The picture on page 44, is on example of very bad practice, in that the face-piece and other equipment is lying in close proximity to what is apparently dirty ho3e. This photograph might be used as an example of suoh practice, while a more naat arrangement in the picture on page 45 with men in somewhat cleaner clothes, might be used as an example of good practice. (10) On page 47, do you often find that it is necessary to use korosene in cleaning air-line equipment? In our experience, water, especially from a high pressure ho30 has proved adequate for removing sludge. KE 0022540 Kr. W. Howxaan - (3) - August 22, 19^1 (11) We have no assurance that even sandblasting or chemical cleaning will make tanks that have contained leaded gasoline safe for use in drinking water service, and accordingly, the best statement to r&aka in relation to this is that tsnks that have contained leaded gaaolino should not be used for storage of foodstuffs or drinking water. This stetensnt cay not prevent their being so used, but it certainly will not put us in the position of anvlsir.n that any method of cleaning will make these tanks safe for use. (12) The items on page 53 might be mentioned on the introductory page l u g then again at the conclusion. I think this book in the main has been extremely veil done and will be very much interested in keeping in touch with the progress of the work. Very truly yours, . ifll ** r:**i * V 4 I'iilsra 'techie, vr Tu ^ 002 OKO *