Until this occurs, this list contains IDLH values based on both the 1994 revised criteria and CIB 66 [NIOSH 2014-100]. It is important to note which criteria was applied to develop a specific IDLH value.

The revised IDLH for carbon monoxide is 1,200 ppm based on acute inhalation toxicity data in humans

Jan 11, 2024 · Carbon monoxide (CO) exposure is determined by calculation based on carboxyhemoglobin (COHb) measurements provided by medical professionals as described below. OSHA uses a modified Coburn, Forster, Kane (CFK) Calculation.

IDLH: 1200 ppm (1374 mg/m3) Procedure: Expose a personal gas monitor using a carbon monoxide (CO) electrochemical sensor to workplace air. Recommended sampling time: Full shift (up to approximately 8 hours with new batteries) Reporting limit: 2 …

The term immediately dangerous to life or health (IDLH) is defined by the US National Institute for Occupational Safety and Health (NIOSH) as exposure to airborne contaminants that is "likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from such an environment." Examples include smoke or other ...

Apr 25, 2022 · Immediately Dangerous to Life and Health limits (IDLHs) are workplace exposure limits that are meant to protect workers when they are exposed to a toxic chemical in the course of their work. What are IDLHs?

Nov 1, 2020 · Firefighters may describe the conditions inside a burning structure as IDLH: Smoke, superheated gases, and the toxic by-products of combustion may all be characterized as IDLH conditions that...

Feb 1, 2025 · Prevent fire extinguishing water from contaminating surface water or the ground water system. Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Includes pyrophoric substances.

The Immediately Dangerous to Life and Health (IDLH) level for CO is 1,200pm at any given time, according to the National Institutes for Occupational Safety and Health (NIOSH). Best practice is to never allow CO levels to go above 150 ppm within any area at any given time.

Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode