Limit oxygen concentration

Triangle diagram with registered SGK, UEG and OEG

The oxygen limit concentration (SGK) is the maximum concentration of oxygen in a mixture of a flammable substance with air and inert gas at which an explosion does not occur.

The limit oxygen concentration is, in addition to the upper and lower explosion limit (UEG or LEL) and the flash point, a parameter of explosive mixtures.

It is determined under specified test conditions.

literature

• Ulrich Hauptmanns: Process and plant safety. Springer Verlag, Berlin / Heidelberg 2013, ISBN 978-3-642-37252-0 .
• Henry Portz: Fire and Explosion Protection from AZ. Explanation of terms and fire protection characteristics, 1st edition, Friedrich Vieweg & Sohn Verlag, Wiesbaden 2005, ISBN 978-3-322-80198-2 .

Web links

• SAFETY CHARACTERISTICS IN NON-ATMOSPHERIC CONDITIONS (accessed on February 21, 2020)
• TRBS 2152 Part 2 / TRGS 722 Avoidance or restriction of hazardous explosive atmospheres (accessed on February 21, 2020)
• Research report safety parameters of dusts under non-atmospheric conditions (accessed on February 21, 2020)
• BIA report Combustion and explosion parameters of dusts (accessed on February 21, 2020)
• Plant safety: gas explosion parameters (accessed on February 21, 2020)

Individual evidence

1. ↑ Standard DIN EN 1127-1: Explosive atmospheres - Explosion protection - Part 1: Basics and methodology ( beuth.de ).
2. ↑ Elisabeth Brandes, Martin Thedens: Characteristics of Explosion Protection - Working Group 3.71. Physikalisch Technische Bundesanstalt, accessed on March 19, 2020 .  .