Document 3ev0v9JeyBVJXo9kR5pVzGB8E

90SL2001S I would now like to Introduce DB DW60HHUN from our Hod! ml Qapt. iae_ Mr. Degesero !c Dr. Ducommun have presented the technical aspects to us with several recommendations - you might now be asking yourselves "NOW WHAT DO WE DO?" .. LARRY WARREN will now discuss PERSONAL PROTECTION with us. SUMMARY: l\u As you can see, the past presentation^ questAorta uni -nnrirt. nffrrti ALL of us. Those of us. In management * . .* have a moral and legal obligation to see that you have a safe environment in which- to work. To continue'our efforts to give you a safe place to work -- we are obviously going * 1AA***** to eliminate any insulating material containing asbestos ^ ASAP. Starting August 11, in specific areas, until adeq substitutions are acquired, approved respiratory equipment ust be worn. .nk you for your attention. yT* Da- Ol /M#w* ^ 397091 A. ; ,t *-" v - JLLU 1. USE LOCAL rstav^m rv ,%x * 2. USE APPROVED Riaf^TORjr QO^KjC^qp * * 1 i 3. HZfLACX DBUI^TDW MATSUOS Cp*MJ|p ASBESTOS 1 / I. I \ 1 i /.ns/.znn i s l 397092 b iu u ^ /b u y S.ll n M A R Y 1. WE HAVE A KNOWN HEALTH/ PROBLEM. 2. THE SOLUTIONS MAY NOT BE POPULAR. 3. WE HAVE A CHOKE BETWEEN PROTECTING EMPLOYEE HEALTH OR - OCCASIONAL DISCOMFORT. WE ARE GOING TO' PROTECT YOUR health: 9 r 397093 ST0027509 Good day. Gentlemen. My name la Roy DeGesero. Supervision requested an Midland pipe coverers' here In Midland. These dusts contained asbestos and fiberglas. I shall present the results of the study, conducted from January to April, 1969, then turn the meeting over to members of Medical and management. Before discussing what the exposures are, I'd like to define a term you'll hear several times today. That term at WKal7you do, and UfavraTt^nfvou do It, and ffiEMdcKlbf a certain dust you fellows are exposed to at these times. We learned how often and how long pipe coverers perform the several most common Jobs of pipe covering by talking to you men, your supervision, looking at the time study and from personal observations. We decided on this basis where to sample the air containing dusts caused by pipe covering. The sampling gave us a concentration number of millions of particles of dust per oubic foot -- an expression of how much dust is .in the air you men breathe. (SHOW SLIDE I) 397094 5 I 00275 10 2 This table is a list of the most common operations pipe coverer's perform: removing old covers, mixing adhesives and so forth. Next to the operations are the % Day or estimated average time spent by a pipe coverer performing these operations. Then next to that are the mean concentrations in mppcf measured for each operation with each material listed, and the range of concentrations. Finally, we see_a column with the fractional products of time x concentration, for each material in each operation. Y/hen this column of fractions is totaled, we have arrived at a time-weighted exposure, and can then discuss the significance of this number. For men working indoors, the time-weighted average exposure to asbestos containing dusts was 4.9 mppcf in the 8-hour day. The time-weighted exposure to f iberglas (dust) was 0.5 mppcf. (SHOW SLIDE II) This table represents the time-weighted exposures to asbestos containing dusts for men working outdoors. That number is 4.2 mppcf and'reflects the fact that some air movement outdoors tends to dilute the dust. The time-weighted exposure to flberglas dust was 0.4 mppcf. 397095 ST-002.75 I I 3 After obtaining a time-weighted exposure, we then relate this exposure number to the best current Information available on the health experience with asbestos and flberglas. A group of advisors called the American Conference of Governmental Industrial Hygienists has gathered up as much sound data as is available from laboratory research and field experience on the health problems associated with insulating materials, and the ACGIH expresses this information in numbers called the Threshold Limit Values; asbestos has one TLV, and flberglas has another, different TLV. The Threshold Limit Value describes a ^ average concentration of dust to which men can be repeatedly exposed for 8 hours with no adverse effect on health. This average number can be exceeded for brief periods of time, provided such excesses are balanced by equally long periods of time when exposures are below the average Threshold Limit Value. For asbestos, the present TLV is 5 million ppcf, based on knowledge accumulated 30 years ago. Present experience with health problems in 397096 ST00275 I 2 4 Insulators and others working with asbestos has suggested that the Threshold Limit Value bet lowered by 1971 from 5 mppcf to 2 mppcf, in light pf vary subtls health problems. 4;**;V . v-. The TLV number represents good practice and Is used by most governmental agencies in maintaining healthy work environments. As you can see, the time-weighted' exposures 1 we have measured for asbestos containing dusts ape above this proposed TLV of 2 mppcf. The time-weighted exposures for flberglas containing dusts are below the TLV for fiberglas dusts. That TLV is 15 mppcf. i The Environmental Research Laboratory has proposed to management, three ways of lowering pipe coverer's exposures to asbestos containing dusts to within the 1971 limit. They arej (1) Use local ventilation (on the Job air movers) to pull dusts away from the man's breathing zone, or 397097 ST00275 I 3 5 (2) Use approved respiratory protection whenever men remove, cut, or apply. Aircell, Kaylo, High-Temp or Thorwobacto-s, or when they mix Webers and Armentite. (3) Replace present Insulating materials containing asbestos with materials which do not present the health problems of currently used materials containing asbestos. 397098 \ ,, ' . t \ * ST00275 I U Table 1. i', : # TIME-WEIGHTED EXPOSURES OP PIPE C0Y2KERS TO DUSTS FSOM ASBESTOS CONTAINING MATERIALS -" joerations Materials ' Concentrations (mppcf) % Day Mean- . Range ' Time-weight Factor: Asbestos Remove Klx Cut ` \ Apply Air cell Kaylo Mag oxide Flberglas No. 1 Plus Armentite Superpower Air cell Kaylo Piberglas Others Air cell Kaylo Piberglas Others No. 1 Plus Armentite/ Superpower 1.2 1.6 0.2 2.O' 1.6 . , 0.1 0.8 . 5.9 8.8 2.2 0.6 15.6 19.9 4.5 2.6 4.8 2.4 11.4 ii/2 2.8 3-3 *7 0.3-24.9 .3.7-20.5 1,8-4.6 1 1,2-33.7 13.4 . 2.2-30.5 9.5 2.7-13.5 34.9 . i9.6-6.i4 3-0' 11-7 1.7 0.6-6,2 4.9-23.1 0.8-2.6 5-7 0.2-15.4 5.7 0.4-22.3 2.4 . 1.2-3.3 9.6 1.1-39-5 . O 1m O.9-3.9 0.137 0.179 0.006 -- 0.219 0.010 -- 0.177 1.030 -- 0.901 1.123 0.461 0.050 Clean up removed covers Stocking ; get new covers |Move to job, set up 2reaks, lavatory 3.0 2.0 5.0 15.0 8.5 2.4-24.6 1.0 0.1-2.3 2.0 1.4-2.9 1.4 0.1-3.9 . 0.255 0.020 0.100 0.2fli Time-weighted exposure to . asbestos containing dusts (indoor) in mppcf 397099 ST00275 I 5 Warren Portion of the Insulation Talks After all of the explanation and facts concerning the hazards of asbestos I can imagine a lot of you are wondering "where do we go from here?" t For years and years, asbestos and insulation value have been almost synonvmcus. The higher the asbestos content the easier it was to sell. Most of us were aware of the health problem, covering asbestos, but it seemed rather insignificant as it didn't seem to be affecting us much. Then there were a couple articles in our local paper concerning the affects of asbestos on the respiratory system. These were brought to my attention and I in turn brought it to the attention of the Medical Department $ Invirpmental Research. We decided that each of the covercrs should have . a chest x-ray and at the same time we should have an invirorrental research study to find out exactly what our exposure is. We were very pleased to find that none of our coverers had asbestosis. But when the inviromental research findings were told to us we recognized that we do have the potential for o o r<cj-o> -2- The Doctor and Roy Degcsro have explained the causes of the problem and-the affect on the body. I'm here pw X fc w ' to tell you`we expect to eliminate the problem. If you will remember Roy gave usp three (3) things he thought we could do that would lower the parts per million of asbestos dust to a acceptable level. ST00 27516 Local ventialtion. You and I know this is not an acceptable method as it would be i] 2. Use Bureau of Mines approved respiratory protection (show example). This is an acceptable method in most cases if we follow the chart I will now show on the screen. If you will notice the removing of aircell, Kaylo, high temp, and mag oxide have all been checked. All of you men who are in the trade I'm sure have seen the reason for this. Also checked is the applying of kaylo and aircell. It was found the applying of either of these insulations caused the parts per million of dust in. the. breating area to to to 5.7"which is above the limit. This was almost 3St of your work day. The mixing of asbestos shorts or plus one is also checked for appar nt reasons. You will notice that Fibriglas is not checked in any 397101 catagory. The reason for this has been pretty well covered by Roy $ Dr. Ducommon. I will only say that I've heard -3- i q / z n n i s/ many controversal words said about fibriglas, but never have I heard or read any thing by a reliable source, that said it was dedtrimental to your h'eat lth., ~ In fact I have with me a pamplet put*out by the Industrial Hygiene Foundation of America from which I would like to read you a few excerpts. I would say that under same circumstances that it is some what uncomfortable. According to most people who have studied its use, a person using Fibriglas insulation should wear loose fitting clothing, no tight belts or cuffs and they should keep clean. Talking about cleanliness brings up another point that bears mentioning and that is that shower time for men using fibriglas is not and I repeat no, automatic or mandatory for health reasons. A supervisor will grant shower time if he feels the condtions warrent it. 3. Replace our present asbestos containing insulation with materials that don't cause a health problem. We have all of our resources on the lookout for replacements now. Ray Anderson will cover this subject further later on. 397102 These were Roys recommendations and starting August ST0O275I 8 4 a) asrvuch as possible with non asbestos Fi)\brglas foam glas, cernic foam, polyurethane, etc. b) When using insulation containing asbestos, a bureau of mines approved per the chart. Ne will pass out a wallet size copy of the chart as you leave. c) for moW If we do these three things there is no doubt in my mind that we will be below the 2 M.P.P.O.F. limit that will go into affect soon. ,l .I Gentlemen, we have a problem; it isn't going away by itself. We feel we recognize the problem and we have the solution. You have heard the plans. We expect and insist that we get your full cooperation to implement these plans. 397103 I'm sure some of you men are sitting there thinking about possible additional costs, and of the possible corrosion in some instances where a perfect weather barrier is not achieved. We know we have had some of these problems in G I Q / 7 f in I c- -5By working together we know that all the problems can be worked out. Our main objective today is to make the job safe for you men. The economics are important, but not of prime importance at this particular time. Thank you for your attention, now here is Roy Anderson to talk about possible substitutes. Remember August 11th is the day that we must wear respiratory protection when working with asbestos type insulation. The card is your quide. Thanks again Here's Roy. J 397104 ST 1)02 7520 THE DOW CHEMICAL COMPANY July 17, 1969 As a result of his survey, Mr. DeGesera.haa made up a table showing under what conditions and with what materials an approved respirator must be worn. This table has been reproduced on a small card and each one of you will receive a copy. (Show transparency on the screen. ) i ,. I think you all know that there is a very good replacement for Aircell and that is Fiberglas. Fiberglas is more than twice as effective as Aircell as an insulating material and contains no asbestos. (K factor . 61 versus . 29) Fiberglas is being used in every Dow division except here at Midland. Actually, Aircell should not be used on any job except for personnel protection. It is not designed for temperatures higher than 200 F. and we know it is commonly used on lines traced with 150# steam (375F.) At the present time we are trying out an expanded silicone (perlite) type of insulation called Careytemp 1500. This material does contain about 6% asbestos which is about the same as Kaylo; however, it is not supposed to be nearly as dusty. The Phillip-Carey Company has been doing some work on eliminating completely the asbestos from this material. More information on this material will be forthcoming as soon as an evaluation can be made.' Hi-temp is a diatomaceous earth type of insulation which contains about 15% asbestos. There is no non-asbestos substitute for this material on very high temperature applications; however, its use is rather limited and it should not present a real problem; 397105 I ZS12001S Mag Oxide is another fairly high asbestos containing insulation which, at present, is not being used to any great extent here in the plant. Mineral wool insulating cement commonly known as Webber's Cement contains about 10% asbestos and is quite dusty when being mixed with water. It has been suggested that the dry material be made up in batches large enough to last for a week or two. This would eliminate the need for a respirator each time the material is used. The use of Armentite is small enough so that making up large batches vrould not be warranted except in special cases. Every major manuracturer of insulation has been contacted with regard to new products available, etc. This practice will be continued and any time we can find a new product that will be more effective or easier to work with, it will be brought into the plant for "your use. Roy Andc-rson Maintenance Engineer 222 Building Phone 6-4456 rb 397106 * % MINIMAL RESPIRATORY PROTECTION REQUIREMENTS 7 SI ?.nn 1 ;<2. Material__________________1 Re rave j Mix ' | Cut | Aooly t Air Cell Xaylo (Cal sil) Kijih Ter.?. Maj Gxice No. 1 Plus (Webbers) A r.r.entire (Asbestos Shorts 352) Super ?ov:er The mooes to s Riber^lass X XX X*. X % X X X X G 2. You *?* wear a respirator-*- when dcir.3 the above operations GAZ'tS&ji&r You C:otb respirator* ( MSA Dustfoe or Sure Guard (R-2090) ere the .only allowed types. 397107 ST 002 7523 r (~y-' put together this morning for Jim Scovic. He seemed .>' pleased with it and is tending copies to the Productivity Committee. ' - ; o. See you Monday. Tom I 397108