Air-purifying respirators, which remove contaminants from the air. Employers must use the assigned protection factors listed in Table I to select a respirator that meets or exceeds the required level of employee protection.

Assigned Protection Factor (APF) means the work-place level of respiratory protection that a respirator or class of respirators is expected to provide to em-ployees when the employer implements a continu-ing, effective respiratory protection program as specified by this section.

Manufacturer must demonstrate APF of 1000, otherwise use APF of 25. Fu ll facepiece PAPR with HE filters for exposure to asbestos. All statements, technical information and recommendations contained herein are based on data we believe to be reliable, but the accuracy or completeness thereof is not guaranteed.

2024年11月5日 · Assigned Protection Factor (APF) is a crucial concept in workplace safety, especially regarding respiratory protection. In environments where airborne contaminants or …

§The APF (assigned protection factor) is the minimum anticipated level of protection provided by each type of respirator worn in accordance with an adequate respiratory protection program.

2022年8月4日 · At 50 mm, the APF is equivalent to using a 100-class filter. To avoid using APF of 25, the manufacturer must show an APF of 1000. For asbestos exposure, use a four-piece full-face PAPR with HE filters. Is N95 dust mask APF 10?

Loose-fitting PAPRs have an APF of 25. Loose-fitting PAPRs with a helmet or hood can have an APF up to 1,000 if supported by manufacturer-supplied test evidence.

2017年10月19日 · This level of performance can best be demonstrated by performing a WPF or SWPF study or equivalent testing. Absent such testing, all other PAPRs and SARs with helmets/hoods are to be treated as loose-fitting facepiece respirators, and receive an APF of 25. These APFs do not apply to respirators used solely for escape.

Every respirator is given an Assigned Protection Factor (APF) by NIOSH, which represents the workplace level of protection respirator is expected to provide workers. Typically, workers need a PAPR when working in environments with an APF between 25 times and 1,000 times over the quantifiable limit of concentration.

(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus