Document Zm4Kb42YGd5LNzMJNY0oyDL

Rc^ULAiiwo I 1910.93* AV>CTlo. (d) Definition*. For the purposo ol this section, (1) "Asbestos" includes chrysotlls. amosite. croclciolltc, tremoUte, aathophyUito, and actinollta. (2) "Asbestos libers" means asbestos fibers longer than S micrometers. (b) Permissible exposure to airborne concentrations of asbestos fibers--(1) Standard effective July 7, 1972. The 8-hour time-weighted average oirbomo concentrations of asbestos flbors to which any employee may be exposed shall not exceed five libers, longer than S micrometers, per cubic centimeter of air, as determined by the method pre scribed In paragraph (e) ol this section. (2) Standard effective July 1, 197C. The 3-hour time-weighted average air borne concentrations ol asbestos fibers to which any employee may be exposed shall no* exceed two fibers, longer than 5 micrometers, per cubic centimeter at air, os determined by the method pre scribed in paragraph (c) of this section. (3) Ceiling concentration. No em ployee shall be exposed at any time to airborne concentrations of . asbestos fibers in excess ol 10 fibers, longer than 5 micrometers, per cubic centimeter ol air, ss lnleon`v:*l by !>* iucUkiu i-.i scribed In nr.M>:'rapii <o) ol U>U :.<:cll>-n. <C) JSclliod* Of -lii f>- pinccriup methulls. U) iiupiurerrag con trols. Fogi.ncerliVT controls, .111011 ns. hut not limited to. isolation, enclosure. ex haust vcntUaUoii. and dust collection, shall be used to meet the exposure limits prescribed in paragraph <b' ol this section. <ii) toco! exhaust vmUUatii,'.. 10 > Local exhaust venlflatlou and unit col lection systems shall be dcslrmii. con structed. Ihktailed. and midair in*; in accordance will* the American National Standard Fundamental.! Ooreming the Dewier. and Cbwatjnn ol X-ocel i.xhaust Systems. ANSI ZH.2-1971. which U in corporated by reference herein. (b) Sec S 1910.C concerning the r-vnliabUlty ol ANSI Z9.2-1971 ai-.u <>.* maintenance of a historic file in coi.noc- tion therewith. The address n.` tire Amer- teon National Standards IrwUluto given in 11910.100. (Ill) Particular tools. All hand -op erated and power-operated tool'.- which may produce or release asbestos fiiers In excess ol the exposure limits Pre scribed In paragraph (b of this section, such on. but not lbrdtcd to. saws, scorers, abr&slvs wheels, and drills, son!) )-.* p/->- vided with local exliaust vcnUlrtioii sys tems Jtn accordance with ouixlivision <II' of this subparagraph. (2) TYork practiccr--(1) t^c: mrin-its. Insofar os practicable, asbr.itr-s m <- hnncHed. mixed. app.Ued. rcinom'. scored, or otherwise worked in r *ret stato oufilelent to prevent the cmK-.;on of airborne fibers In excuse of tii-i ex posure Unfits firescrlbcd In parr.r.TM^ii (b) of tide section, unless the iisr hiinc.: of the product would be dli',i.U.-.,u thereby. (ii) Particular products and anrra- ticlire. No asbestos cenienfc. morl* . . r.o- *.- bin. grant, planter, or alinliar ni;\'-i containing rvibastes shall be r..nw,t. i from brus, cartons, or otiicr cu.v.d-- In which they rxo shipped, without bis ' either vrettoS, or enclosed, nr vesitU-.-cd so ns to prevent effectively tlie reie-.-r u. airborne asbestos fibers in execs* of th- limits prescribed In paragraph <bi of thti motion. (Jit) Spraying, demolition, or'removal. Employees engaged in the Kurivyu*\ o' asbestos, the removal, or doirilh'mw pipen, structures. 01 crulnnic'it env* or icrvlated with nobcRlun. .-,<a ;> the removal or demolition of arireitn? >/- culatf.oa or coverings alitdl be p. cviuiu with respiratory erpSpivurnt V xc-'-ord- anco with pomg.nvoh (d> CiKiU) of tui* section and with sposisl doth; v. in r.c- cordfnsse with paraevopa (tiiiw of ti.U oectlas- (d) Pcrcer.pi protective <5<p.-fr;ncnf -- (1) CmpDanso with rile oxvatnivn lluiiis prescribed by paragisipU (l of ijij- *<;- tlon nmy not be achieved b7 the use of respirators or ouift rotation of *mployccc, except: (1) During iho Umo wiled ncoosCT.rv to iinlsdi tire a^las:ring controls and to institute work practices requli-evl by paragraph (c) of this section ; KDERAt REGISTER,. VOL 39, NO.- 123--THURSDAY, JUNE 37, 197*