Editing Ozone (section)

===Safety regulations===
Because of the strongly oxidizing properties of ozone, ozone is a primary irritant, affecting especially the eyes and respiratory systems and can be hazardous at even low concentrations. The Canadian Centre for Occupation Safety and Health reports that:

<blockquote>Even very low concentrations of ozone can be harmful to the upper respiratory tract and the lungs. The severity of injury depends on both the concentration of ozone and the duration of exposure. Severe and permanent lung injury or death could result from even a very short-term exposure to relatively low concentrations."<ref>[http://www.the-o-zone.cc/research/abstracts/OSHC.pdf What are the main health hazards associated with breathing in ozone?], Canadian Centre for Occupational Health and Safety</ref></blockquote>

To protect workers potentially exposed to ozone, [[U.S. Occupational Safety and Health Administration]] has established a permissible exposure limit (PEL) of 0.1&nbsp;μmol/mol (29 CFR 1910.1000 table Z-1), calculated as an 8-hour time weighted average. Higher concentrations are especially hazardous and [[NIOSH]] has established an Immediately Dangerous to Life and Health Limit (IDLH) of 5&nbsp;μmol/mol.<ref>[https://www.cdc.gov/niosh/idlh/intridl4.html Documentation for Immediately Dangerous to Life or Health Concentrations (IDLH)]: NIOSH Chemical Listing and Documentation of Revised IDLH Values (as of 3/1/95)</ref> Work environments where ozone is used or where it is likely to be produced should have adequate ventilation and it is prudent to have a monitor for ozone that will alarm if the concentration exceeds the OSHA PEL. Continuous monitors for ozone are available from several suppliers.

Elevated ozone exposure can occur on [[passenger aircraft]], with levels depending on altitude and atmospheric turbulence.<ref name="portfolio">Lai, Jennifer (2008-05-08). "[http://www.portfolio.com/views/blogs/daily-brief/2008/05/08/airplane-air-heavy-on-the-ozone Airplane Air Heavy On The Ozone – Daily Brief]". Portfolio.com. Retrieved on 2012-02-01.</ref> U.S. [[Federal Aviation Administration]] regulations set a limit of 250&nbsp;nmol/mol with a maximum four-hour average of 100&nbsp;nmol/mol.<ref>[https://www.sciencedaily.com/releases/2007/09/070905140105.htm Air Quality In Airplanes: Blame Ozone And Natural Oils On Skin]. Sciencedaily.com (2007-09-05). Retrieved on 2012-02-01.</ref> Some planes are equipped with ozone converters in the ventilation system to reduce passenger exposure.<ref name="portfolio"/>