Document BRXGkJGydq1xMY58kExNJpZrJ

239 RTV. 2-6? Vl) Cvj^ jpr MA ^ <3 ^ C^> A/ty\ UNIROYAL, Inc. Oxford E-G-l (Location) IECBVED BY BRl TO: D. E. Dudrow R. E. Lowell FROM: W. D. Harris, Ph. D. Corporate Industrial Toxicologist DATE: December 18, 1972 SUBJECT: Painesville Plant Visit,December 12 and DEC 21 72 OROC* itoim | TO CEB JHC CHK REH WMt DATE RELEASED NAM DIM with the following people present. B. R. Leach C. H. Kim C. J. Urbanski C. B. Westerhoff N. R. Walter Raymond Kenney W. M. Iliff Michael Jasman R. E. Holman Factory Manager Technical Superintendent Production General Foreman- Area #4 Chief Chemist Safety Supervisor Utilities Engineer Plant Engineer Chief Process Engineer Production Superintendent CRM Ml r XX I explained the TLV concept and various sampling approaches. There was general agreement that it is advisable to get better data than they now have. Mr. Leach summarized facts which Mr. Westerhoff had given him. a. Lower Explosive Limit (LEL) 4% = 40,000ppm b. 10% LEL = 4a000ppm c. TLV = 200ppm d. Possible limit based on Dow and other work = 50ppm e. Test limit = 0.5ppm . f. Odor threshold about = 250ppm g. Concentration which will anaesthetize = 16,000ppm in 5 min., 6,000ppm in several hours Possible trouble spots in Area #4 1. ' Second floor at polys during drop 2. Slurry tank 3. Poly during jetting 4. Second floor at compressors 5. Dryer outlet INTERCOMPANY CORRESPONDENCE UNIR0000816 2- - Mr. Westerhoff then took me on a tour of #4 Area (PVC and Paracril), It was very obvious that grab samples unless very numerous, would be of little value. We agreed that it would be well to get four grab samples on Wednesday morning. Mrs. Stoll will have them run thru the chromatograph but will not be able to interpret the curves until she has run some knowns in the expected concentrations. She may not be able to do this until after Christmas. Jack Porter took me through Area #1, the old PVC plant, in. the afternoon. The process is somewhat different and does involve use of a modest amount of vinyl acetate about one week in four. They are also working on THP cleaning of polys but do not have this process in regular use. Both vinyl acetate and.THF have a much stronger od.or than vinyl chloride. Some sampling should be done on both. TLV's are as follows: Vinyl acetate THF 10 200 There are several possible sampling and analytical approaches, each with certain advantages and disadvantages. Analytical 1. Gas chromatograph Can be very specific and precise. Each analysis takes about one hour. Each sample is a grab sample so a large number of samples is required.due to frequent movement of worker and wide variation in con centration with time at a given position. The same method can be used for vinyl chloride, THF, vinyl acetate, acrylonitrile, acrolein, etc. It is necessary to work with knowns to establish Rf value for each material. 2. Permanganate oxidation followed by chloride determination This method can be made very specific and adequately sen sitive. It lends itself to an integrating sampling pro cedure. It can probably be used in a personal sampler attached to the worker, greatly reducing the number of samples required. Reasonable results could be obtained by sampling at a number of carefully chosen fixed points and calculating time weighted average based on a time study of worker habits. This method is useful for VC only. 3. Analysis of breath of worker following a full work shift and comparing with a standard curve This gives an inte grated time weighted average exposure. 4. Possible use of existing sequential sampling set-up with a more sensitive analyzer UNIR0000817 -3- It was agreed during the close-out discussion that sampling should be done and that it will be best for Painesville to do it. We will cooperate and will evaluate results* They will explore method 4 at once to see if hardware is a vailable and at what cost. WDH:rg cc: L. F. Dieringer B. R. Leach W. D. Harris UNIR0000818 V CM CO!! C C N TR AT ION 2 4 houTT samples-!Tram results DATE BLOG. LOCATION RANGE , ppm AVF.. ,ppm 2/12/74 2/13/74 2/14/74 2/15/74 2/18/74 2/19/74 2/20/74 2/20/74 2/20/74 2/20/74 2/20/74 2/21/74 2/21/74 2/22/74 2/23/74 2/24/74 2/25/74 2/2G/74 2/27/74 2/27/74 2/27/74 ?* f>7 //7 A* 2. 3/ 74 3/1/74 3/1/74 3/1/74 3/1/74 3/2/74 3/4/74 3/4/74 3/4/74 3/5/74 3/5/74 3/5/74 3/6/74 3/6/74 3/7/74 3/7/74 3/8/74 3/8/74 3/9/74 3/10/74 3/11/74 3/11/74 117 117 117 117 107 107 107 107 107 ' 107 107 107 107 414 41 4 414 414 . 415 117 117 117 117 108 108 108 107 107 108 414 414 414 414 414 108 117 107 107 107. 108 117 100 108 108 108 2nd Floor 0 Charoe Station 52 1st Floor 0 Stripper \\ 36 1st Floor 0 #7 Compressor ' 528 2nd Floor 0 Exhaust Fan 148 2nd Floor 0 W e i q h i n o Bench 52 2nd Floor Between A&D Strippers 25 Air Above Manhole Durinq Jettinq 32-230 90 (40 nin.) Poly Cleaner Entered 0 26 ppm 26 Poly Cleanout Matl.in Drun(2/3 full) 6"abv.drun 40 611 into drum 75h ii i: it ii ii ii 1st Floor Catwalk Under t?17 2-1100 120 (22 hrs.) 2nd Floor Exhaust Fan 26-1000 120 (4 hrs.) With Polv Cleaner in #15 1030 (chronato 2nd Floor Exhaust Fan 20-1050 88 2nd Floor 2'* East of Polv #11 0-1640 88 1st Floor Exhaust Fan 3-1600 100 1st Floor Between Strainers 0-1600 160 Banner Station 20-160 26 Poly 10 Jettino 70-745 265 (30 min.) Poly 6 Jettinq 50-1095 2 60 (24 min. ) Poly 6 Jettinn-next shift SE Exhuast Fan-2nd Floor 160-1600+ 31 8C.0t) (M17e mh ^in.)\ V w W W` W Centrifuae Catwalk 0-950 65 ' Swenson Banner 30 ( 30 in i n .) Bowen #1 15 (6 hrs.) Poly 22 with Poly cleaner 120-580 185 (75 min.) Poly 22 with increased air 25 Catwalk @ Bowen #2 Derrick 35-S00+ 250 1st Floor Exhaust Fan 8-360 60 (2.5 hrs. ) Poly 5 Jettino 100-320 160 (8 min.) Poly Cleaner in #5 10-25 15 (23 min.) 1st Floor Exhaust Fan 10-380 40 (4 hrs.) Jettinq #4 1600+ ( 7 min. Feed Chute to Vims. Mills 5-100 ` 25 (11 hrs.) Between Compressors 7&8 160-550 270 2nd Floor Exhuast Fan, 50-1040 120 (19 hrs.) Poly Cleaner in #16 50-150 80 (70 min.) 2nd Floor Exhaust Fan 50-160 70 (2 hrs. ) Locker Room 0 0 (3.5 hrs.) 2nd Floor Exhaust Fan 25-800 90 (18 hrs.) Break Room 4-14 8 Locker Room 2-190 5 Sock Chancie-Bowen #2 15-26 20 (15 min.) Pilot Plant 0-700 14 (10 hrs.) UNIR0000819