Reference

OSHA 1910.134(d)(3)(iii)(B) requires a documented change-out schedule for OV respirators. This guide covers ESLI vs. calculated schedules, 3M Service Life Software inputs, P100 replacement rules, combination OV/P100 dual service life limits, per-SKU guidance for 3M cartridges, and a 6-step worked example for solvent spray painting.

OSHA 29 CFR 1926.1153 is the construction silica standard. It sets a PEL of 50 µg/m³, allows Table 1 engineering controls as a compliance option, and requires written exposure control plans and medical surveillance when applicable. This guide covers each compliance option and respirator selection for concrete grinding and masonry work.