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Fit Testing

Fit Testing. Tab 8. Purpose. Identify proper make/model/size Verify that the user can: wear comfortably without frequent adjusting inspect and identify faulty parts properly don perform positive / negative user seal checks

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Fit Testing

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  1. Fit Testing Tab 8

  2. Purpose • Identify proper make/model/size • Verify that the user can: • wear comfortably without frequent adjusting • inspect and identify faulty parts • properly don • perform positive / negative user seal checks • maintain a sufficient seal through a series of representative movements

  3. Quantitative (QNFT) • Test Aerosol (TSI Portacount) • Conc Outside / Conc Inside = FF • Overall FF does not equal PF • new standard 100 & 500 • recommendations • 1000 & 2000 TSI • 2000 & 5000 Darrell Bevis • Controlled Negative Pressure (CNP)

  4. Qualitative (QLFT) • Subjective • Odor • Taste • Irritation • NIOSH warning

  5. Appendix A, General • Medical clearance prior to fit testing (e1) • Training on donning • Selection, most acceptable fit • + and - pressure (user seal) checks • Facial hair = NO TEST • Worn 5 minutes prior to test with all other safety equipment that could interfere with the fit

  6. Isoamyl Acetate Protocol • Odor Threshold Screening • 3 jars • odor free water • isoamyl acetate • separate room • must identify correct jar

  7. Isoamyl Acetate • Fit test protocol • clear drum liner • 2 foot frame • proper cartridges • copy of exercises • paper towel • atmosphere stabilization (2 min.) • test exercises

  8. Test exercises • Normal breathing • Deep breathing • Side to Side • Up and Down • Talking • Grimace (QNFT only) • Bending over • Normal breathing

  9. Isoamyl Amyl Fit test protocol (continued) • smell odor TEST OVER • leave immediately • reselect • re-screening (olfactory fatigue?) • repeat fit test • break seal if and when a successful test is achieved

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