Document 82ra9ykYE1bbwQ5mZ1nXnLokZ

January 30, 1970 E. 3a 1 car cc R. T. Budovec it. J. Sheehan G. U. Brown u A. C. Si e ter S.~JFCT: Industrial Hygiene Survey Asbestos Warehouse and Beater Scon Ventilation Re: A. Dieter*s letter to . Sheehan dated 12-17-69 The follotsing is a summary of the meeting we had set up with Ur, Romeo Fomentini of Firemen's Fund for 1-27-70, which you could not attend, Fe went over all the modifications that have been made and dis cussed our reasons for not mating some as I outline in my memo of 12-17-69 to Ur, Sheehan. Generally, he was in agreement with ay thinking but withheld any discussion concerning the effectiveness of our revisions until after another dust survey. He suggests very strongly another dust survey and feels as I do that adequate progress has been made to justify it to see where we stand. I think arrangements for this survey should be handled by your people, so I will leave that to you. If I can be of any help, please call* A. C. Dieter jm VPD-153-0002245 DANA-299 MORGEN DESIGN INC. Professional Engineers EMD-g ENGINEERING DESIGN DEVELOPMENT DRAFTING '(s>l (< --^ fSj l--fiQT /4 J]k C/^c< //. /: "; r~ ^t '7I /rj-/X t,C 11 wv , t/' --- -A- v. * ?<^(f "/ i AT Li- e C. yf A**---* ! L ' ^ f * * \ /"y- \ ' -C-"** **4 v \ ^ <rt. . t/ Wisconsin Division Illinois Division Michigan Oivlsion Ohio Division W. Gorman Division 2060 South 61st Street, Milwaukee, 53219 6970 W. Diversey, Chicogo, 60635 12731 Puritan Ave., Detroit, 48227 6111 Ridge Road, Cincinnati, 45213. 741 Reutlinaen. W. Germany Phone (414) 545*5600 Phone (312) 745-9097 Phone (313) 864-3766 Phone (5131 731-4534 Telefon (07121) 34508 VPD-153-0002246 TO: FROM: RE: December 17, 1569 W, J. Sheehan cc R. T. Budovec M. J. Sill G. M. Brown A. C. Dieter JndU3 trial Hygiene Survey Asbestos Warehouse and Beater Room Ventilation Apparently the summaries I made in my memo of December 1, con^rused the progress report rather than simplifying it as was intended for this I apologise. The following is a detailed report by item of the progress made in each area, Recommenda tion 1. As far as being practi cal, the Beater Room should be cut off from the remainder of the plant with openings and partitions as dust tight as possible. Action taken: The Beater Room has always been isolated with Class "A" fire doors which are reasonably dust tight. The addition of an exhaust system as recommended in item 2 will further aid this isolation since it will put this room under slight negative pressure which will prevent exfiltration of dust. 2. Adequate input air and forced ventilation system should be provided so aa to draw dust away from the breathing zone of the operator. Preferably this should be a local system with down draft exhausts leading from the mixing vat to 1the outside Action taken: Installed as recommended. 3. It is suggested that adequate humidity control be provided so that the humidity of the atmosphere in the Beater Room be such that the dust mentioned will be held at a minimum. Action taken: With the success of the dust collection system mentioned in item 2 and the cost and difficulty of maintaining humidity controls, it is felt this will not be necessary. VPD-153-0002247 2- - December 17, 1569 4. A fine water spray in conjunction with necessary closure of the mixing uais should be installed to prevent the mixing ' machine from producing dust by immediately wetting the as bestos fibers poured into the mixing machine. Action taken: With the success of the dust collecti on system mentioned in item 2f it is felt this will be unnecessary. 5. Beater man should be required to wear inhalation masks and at all times while in the Beater Room. Action taken: Was and still is S.O.P. 6. Clean up of the Beater Room should be done by vacuum process then sweep up if possible. .Action taken: Cleaned via industrial vacuum. 7. When clean up of the Beater Room is made, the scrap asbestos on the floor, overhead, etc., should be moistened as much as practical prior to vacuuming. (This possibly could be done by adequate increase of general humidity.) Action taken: The industrial vacuum used in the clean up would not handle wet dust. It did clean up and control dU3t to prevent any further hazard. 8. Adequate forced ventilati on and input are and should be pro vided for the packing room with local exhaust hoods and vents provided to draw the dust away from the operator's breathing zone. Such hoods and ducts should be as close as possible to the source of the dust, at the bag filling spout. Action taken: In addition to the local exhaust hood which has been located in the bagger, we have provided fresh filtered air in such a way that it will wash the operator's face. 9. The Bagging Room should be cut off from the remainder of the plant with doors and openings being as dust tight as possible. Particular attention should be made to the separation of the Bagger Room from the adjacent room in which the dust collector bags are located. Action taken: The Bagging Room is separated from the remainder of the plant by Class "A" fire doors. With the reducting of fibers as outlined in item 10, the interior dust collector bags referred to will be eliminated. VPD-153-0002248 December 17, 1969 3 10. Preferably, the collector bags from the dust collectors should be outside of the plant building walls. If this ;s not prac tical, the room containing the collector bags should be dust ti ght. Action taken; With the recent comple ti on of experimental runs on the corbe3tos fibe rise r, we have changed the duct work of existing aj/aiema so that the in terior dust collection bag3 can be eliminated along with the corbestos fi berizer and the Victopac fi berizer. 11. Forced exhaust and input air system should be provided for the room containing the dust collector bags. Action taken: The interior dust collector bags have been elim i noted. 12. The method of securing the burlap bage to the filler spout of the bagging facility should be inspected to determine if a more foolproof method of securing the bags can be found to eliminate the hazard. of excessive dust when such bags pull loose from the spout during the filling opera ti on. Action taken: An investigation revealed that no real problem occurred during the bagging operation only when the bags are removed does some fiber fall free. This will always occur and with the other precautions which have been taken this little bit should be no hazard. 13. Adequate humidity control for the Bagger Room should be pro vided to maintain as low a level of dust suspended in air as possible. Action taken: As with the similar recommendation for the Beater Room, (item 3) it is felt that no appre ciable improvement will be made by adding hu midity controls in this area. There are adequoted dust collecting facilities available to handle the dust generated. 14. Provision should be made so that the bagger can control the filling spout in the event that the bag 3hould pull loose from the filling spout during filling. VPD-153-0002249 December 17, 1969 4 14. Continued ... Action taken: The current procedure allows the operator two alternati ves should a bag pull loose during filling, . a. Change over to the other side. b. Turn system off, I see no reason for further controls. 15. The bagger should be required to wear inhalati on mask at all times when in the Bagger Boom. Action taken: This is S.O.P. 16. Preferably, the asbestos grinding operation should be cut off from the remainder of the plant. Action taken: None - no dust is present at the grinder. 17. (a) If practi cal, the blower mechanism should be electrically in terlocked with the grinding operations so that in the event that the bag filling and blowing operation has to be inter rupted, the grinding operation will also be stopped. Also, this would prevent grinder ope rati on without proper dust collecting facilities in operation. Action taken: It is impractical without rather elaborate con trols since we do not want to 3hut down the grinder while loaded. This would make restart ing diffi cult at best. The system currently has a buzzer signal which provides the same protection. ,(b) The operation and efficiency of the dust collection system should be reviewed with attention given to the types of col lector bags in use, their replacement schedule, and the ex tent of which fines emanate from the collector bags. Action taken: The system has been checked and is operating properly. We use the best collector bags aiKiilable and replace them when necessary. Any fines emanated are exhausted therefore causing no hazard. 18. A defin. te schedule and record of replacement of inhalati on mask filters should be established and maintained. VPD-153-0002250 December 17, 1969 -5 18. Continued ... Action taken: Replacement has been and is still done on an as required basis. It was found impractical to do on a scheduled basis. There is a supply on hand. 19. It is suggested that chest X ray for employees involved in all or any asbestos opera ti ons should be put on a semi-annual schedule. . Action taken: None to date - upon completion of all pre cautions presently being taken a review of the operations will be made to de termine the fre quencies required. 20. It is suggested that the work duties of all employees cur rently and previously employed in the asbestos department be reviewed and that the work duties in which they were engaged when not in the asbestos department be reviewed and recorded. Action taken: None - the assignments of all employees are a matter of record. . I hope this will answer any questions involved. A A. C. Dieter J'm VpD-ls3. 00022S1