Document bR3XGvzZ4EKMw7DazOGo4YqZ

AMERICAN NATIONAL standard FUNDAMENTALS' GOVERNING TilS DESIGN AND OPERATION OF LOCAL EXHAUST SYSTEMS FOR THE CONTROL 0? ASBESTOS-CONTAINING DUSTS 1. SCOPE 2.1 This standard comprises the fundamentals of good practice in industrial.exhaust systems installed to prevent unsafe environmental conditions when engaged in mining and milling / of asbestos, and the manufacture, fabrication or installation of asbestos containing products. 1.2 The scope of these fundamentals is restricted to normal and typical practice. 1.3 Many of the fundamentals utilized in the design of these systems are set forth in American National Standard 25.2 - 1971, entitled "Fundamentals Governing the Design and Operation of Local Exhaust Systems". .This standard will set forth % the fundamentals and specifics related to control of asbestos-containing dusts. Fundamentals not covered will be found in ANSI 29.2 - 1972, and so referenced. DEFINITIONS 2.1- Dusts. Solid particles containing asbestos fiber. 2.2 Safe Level. Airborne concentrations in the workplace air not to exceed the levels specified by OSNA in the Federal Register, Volume 37, tllO of Wednesday, June 7, 1972. (5 fibers longer uhan 5 microns - per cubic centimeter, o hour uimc--wog."'ouc. av.-regu, or .0 floors -- tnan 5 8005 1285 PRODUCED BY FORD