An instrument for determining the percentage of oxygen in a sample of the atmosphere drawn from a tank, pipe or compartment.

A group of thermal cutting processes that separates or removes metal by means of the chemical reaction between oxygen and the base metal at elevated temperature.

Thermal gouging that uses an oxygen cutting process variation to form a bevel or groove.

These are man-made chemicals which degrade the ozone layer in the upper atmosphere and which are being phased out, both in terms of manufacture and use, in accordance with the Montreal Protocol.

A depletion of the amount of ozone in the earths atmosphere which reduces the eaths protection from harmful ultraviolet (UV) rays from the Sun.

The ODP of a compound is defined as the ratio of the total amount of ozone destroyed by that compound to the amount of the ozone destroyed by the same mass of CFC-11. The ODP of CFC-11 is defined to be 1.0.

The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation.