Document mpxd2BYwaYr60J6O323yMMJ44

Vapors concentrated directly cbove a spill or. open container of KEK can easily reach or exceed the lower explosive limit. RECO>g^Jrt^TI0tTS 76-1 Exieting exhaust ventilation design at blok preform units excludes- shrouding or hooding which is the only effective way to contain floated asbestos fibers. As discussed in provious reports, each blok preform unit should be completely enclosed by an exhausted enclosure except for requirod access openings. If possible, the weigh scale should be incorporated into this enclosure. 76-2 Exhausted enclosures at the blok end book preform units should be provided for the mix buggies, or tha mix should be confined in exhausted hoppers In such a manner that scooping and manual weighing can be eliminated or minimised. 76-3 Frequency of clean up of spilled, scattered asbestos nix at blok and book preform should be increased. Vacuum pickup should be used exclusively for this purpose. 76--4 Steps should be taken to reduce exposures at Disc Brake Inspection either through precleaning of tha pad3 or provision of adequate local exhaust ventilation. It can be assumed that if one inspector is exposed, others in the immediate vicinity are also subject to exposure. 76-5 Although exposure levels were low at disc preform during this survey, it is likely that significant exposures still exist at Disc Preform Units No. 1 and No. 2. Hoppers similar to that installed at Disc Preform No. 3 should also be made available at units 1 and 2 to elimi nate manual loading of the raw fibers. 76-6 The dry line operator in Lower Compounding Bhould be provided with and required to wear an approved particu late respirator during filling of the mix buggies. 76-7 All operators in Blok Preform, Book Preform, and Disc Brake Inspection should be provided with and required to v/oar approved particulate respirators until ventila tion controls have been proven to be adequate. This io a fundamental protective requirement which should not be further delayed. (Repeat recommendation) 3- -