FET means forced expiratory time, which is the time from the beginning of a forced exhalation (the back-extrapolated time zero) maneuver to the end of expiration.


42 CFR § 37.91

Scoping language

Definitions provided in 37.2 will have the same meaning in this subpart. Any term defined in the Federal Mine Safety and Health Act of 1977 (Pub. L. 95-164, as amended) and not defined in 37.2 or this section will have the meaning given it in the Act. As used in this subpart:

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