Glossary beginning with O

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ODS (Ozone Depleting Substances)

potentially harmful substances in the ozone layer that, as such, contribute to the depletion of stratospheric ozone. The most important and harmful are chlorofluorocarbons (CFCs), generally used as refrigerants, solvents and propellants, and hydrochlorofluorocarbons (HCFCs), used to replace CFCs.

OHSAS 18001

oluntary standard published by the British Standards Institution, defining the requirements of occupational health and safety management systems.

OIFR (Occupational Illness Frequency Rate)

cases of occupational illness per 100,000 hours worked.