Document nzneRqLVV5NR0vGNrewebyMa

MEASUREMENT ANO C0NT7.0L OF ASBESTOS BUST EXPOSURE S4T Pop* 3 t. SAMPLING 6.1 Martitoring. Snmpling of cnch operation mini be for nl leost 15 minutr* rlurntinn nnrl taken m a frequency nod pattern to ncrnrntrly represent the employee's ex* p*urr over hi? work period. If results indicate n Irvcl of n*br*tns dust in excerss of the limit, the operation should he reviewed to reduce exposure, see 2.4, and resampled. The initial sampling program must determine the 8-hour time weighted average. Intervals between samples shall not exceed six (6) months. 6.2 Equipment. Samples may be taken with a portable battery-operated ajr sampler attached to an employee'* ' bell or placed in the work area. 6.3.2 Clip filler holder to lapel or shirt pocket a dose ns possible to the person'* mntilli. This method of personnel sninpling is preferred. 6.3.3 If sampler is uffixed permanently in n work area, suspend the filter ns dose us (Hissililelo the person'* breathing tone nl the job to he monitored. 6.3.4 Remove top section of the filter to expoe the full filter face. 6.3.5 Turn on pump and set si approximately two (2) liters per minute rate. Check rate periodically. When finished sampling, turn off pump und record elnpsrd sampling time. Sampling record forms. EN--2731 (see Figure .3) ore available from Stationery Storea, Eng Dept, Wilmington, Del. CAUTION: Samples may not be collected in bastrdous areas, ts defined in DE1D, without a permit to use a spark producing device. 6.3.6 Replace filter top alter sample Is collected ami aeal with tape prior to shipment. 6.2.1 Pump ' Micronnire or Model Cl 15 Bendix Corp Environmental Science Division Towson.Md 21204 or Gravimetric or Monitairt Mine Safety Appliances Co 230 N. Braddock Ave Pittsburgh, Pennsylvania 15208 * I ; I j a[ jEither unit must include battery charger and battery; carrying ease is optional. 1 6.2.2 filter 1 Mitlipor* No. MAWP--037--AO fiber, white, nongriddtd, : 0.8 micron port | Millipore Consolation Bedford, Massachusetts 01730 6.3 Precedere 6.2.1 Flow through the pomp should be calibrated, with the filter in line (or each pump. 6.4 Analysis. Completed samples (exposed filters) are placed in a mailing tube, sealed, and sent to.a qualified ' laboratory with two copies of the sampling record. In clude an unexposed filter with Ibe sample which has hren handled in the tame fashion without drawing air through it. Qualified laboratory information is available from Haskell Laboratory. 6.4.1 All determinations shall be made by the mem brane Oiler method at -100--450X (magnification) (4mm objective) with phase contrast illumination. I 6.5 Record Rasping. Records of personnel and environ-1 mental monitoring shall be maintained for three (3) years ^ and made available upon the request of authorized repre- ' teniatives of OSHA and NIOSH (National Institute of Occupational Safety and Health). 4.6 Wanting signs conforming to Figure 1 shall be j posted at all approaches to areas where asbestos concern: (rations may be above peruiiMible exposure limits at a sufficient distance to permit an employee to read the signs. and take necessary precautions before entering llie area.' Caution labels conforming to Figure 2 shall be used to; identify containers of raw material*, scrap, waste, other products containing asbestos, and asbestos contaminated dothing. | Persians printed In rod meat 0SHA fqiWaTlgfis. Section 1910.93a. j DUP 0902929