Document zzv8Ov29ZMyqRwEZYJMYre5Ba

*4 T .,3 + MCASUKtMENT AND CONTXOl S4T OP ASSISTOS DUST EXPOSURE Pog* 3 1 SAMPUNO t 6.1 Monitoring. Sampling of rich oprration must be (nr at least 15 minute* duration and takm as a frequency and pattrm to aewsratriy rtprurnt the employee'* nposorr nvrr hi* work period. If rraalu iadiealr a level of asbestos dual in excees* of the limit, the operation should br reviewed lo reduce exposure, arc 2.4, and resampled. The initial sampling program must dMermine thr 8-hour time weighted average. Interval! between sample* shall not meed six (6) month*. 4.2 Equipment. Sample* may be taken with a portable batteryoperated air sampler attached to aa employee'* , belt or placed ia the work area. 4.3.2 Gip niter holder la lapel or shift pocket n dose as possible to thr person's mouth. This method of personnel sampling is preferred. a 4.3.3 If a sampler is affixed permanently in a work am, suspend the filter as dose as possible lo the person's breathing rone st the job to he monitored. 4.3.4 Remove lop section of the filter to expose thr fail] filter lace. 4.3.5 Tarn on pump and set st approximate!) two (2) liters per mimilr rate. Check rate periodical!). - When finished sampling, lorn oil pump and record , (lapsed sampling lime. Sampling record form*. EN--2731 (see Figure 3) are available from Stationery 1 Stores, Eng Dept, Wilmington. Del. CAUTION: Samples may not be coOactod ia baurdoas areas, a* defined ia DE1D, without a permit to am a (park producing device. 4.3.4 Replace filter top after sample is collected and seal with tape prior to shipment. 4.2.1 Pomp - MieroBarreor Modd C11S Bendix Corp Environments! Science Division Towson. Md 21204 or 4.4 Analysis. Completed samples (exposed fillers) are ' placed ia a mailing tube, sealed, and sent lo a qualified laboratory with two copies of the sampling record. In- dude aa anexpooed filter with the sample which has been handled la the same (ashtoo without drawing air through it Qualified laboratory information is available from Haskdl Laboratory. Gravimetric or Moafaaite Mine Safety Appliances Co 230 N. Braddock Ave Pittsburgh. Pennsylvania 15208 1 44.1 All determinations shall be made by the mem j brane filter method at 400--450X (magnification) (4mm objective) with pfaaae contra*! illumination. .[ Either unit must include battery charger aad battery; carrying case ia optional. 4.2.2 Wtor ' Millipora No. MAWP-037-AO filter. white, nooxriddrd. . 0.8 micron pore | faillipore Corporation Bedford. Maasachusetts 01730 4.3 Procedure 4.X T Flow through the pump should be calibrated, with the filter in line for each pump. 4.3 toaard Reaping. Record* of personnel and environ mental monitoring ahaJI be maintained for three (3) years aad made available upon the request of authorized repre sentative* of OSHA and N10SH (National Institute o( Occupational Safety and Health). 4.4 Warning signs conforming to Figure l that! be j poated at all approaches to areas where asbestos concen-; trationi may be above permissible exposure limits at a : sufficient distance to permit an employee to read toe signs , and take necessary precautions before entering thr crea.' Caution label* conforming to Figure 2 shall be used to' identify container* of raw material*, scrap, waste, ether. product* containing asbestos, and asbestos contaminated dothing. (b--ttfs scHitad In cad meat OSHA rafuiatlan*. Sactlaa 1910.93a. Dt'P 0902974