Document O3bzqEG7j671R94xxRBgJNanQ

E. |. du Pont de Nemours S Company chaizits wo?.:a ccfstsuctic:! (MINtC^lNO DiMXTMCNT To: CO^ISTEUCTIOls DIVISION K. 2. JGUPTS divisio:: Lcuviins sBaUfIL-tDyI sR unsi^ircsiT w From: L. V. THATCHES SAFETY illGIIZaS. Subject: PBCTaCTIC* PCS I13UL1I ION BSA1T?. KAZA?J)S In reply plceie vie tubjee! listed btlcw Date: Dacewber 5, 1966 c,tl H. D. Boyce - Louviej t t.. \ c / Per your request, the following practices are followed; 1) K*tj the Shop clean. Use a vacuum for clean up to avoid stirring dust. (A built-in vacuus system could be considered for any new Shops). Pay particular attention to ledges and purlins. 2) Vo have our machines ir. an isolated area to prevent creating a general shop hatari. ' 3) Keep as low a ceiling as practical and possible to reduce the cleaning prcole::* 4) We are monitoring for air borne dust hazards. (This is common to this site for many tonic materials). However, a dust hncard monitoring system requires special instruments, etc., as the asbestos study has pointed put. 5) Ve exercise caution in our field vork; avoid congestion, vork on the up-vind side, isolate jobs, etc, We do not need any power tools in the field since all possible fabrication and actual application is done in the shop. 6) Power tools in the shop have exhausts directly connected under the cutting tables. These lead to a Cyclone Collector outside. Thus far, this has proven adequate; however, a wet system or bag collector might be in order to prevent dust being "blown through" the system .polluting the outside area.. This sort of "after filter" cants added if it proves ncccsssry. Our system is a 5 HP Torit V.20-5FM, Torit Corp., St. Paul, Minnesota, makes these in various capacities. Sice will depend on the number of marhine* to be handled, We exheust a minimum of 1500 C.F.M. at 4000 F.P. Torit has a consulting service available; however. Plant Design checked e out also. 070 0It.- .1 V. 1 - DUP 0900736 SC-DP-01626