For the program "Flame transmission FT" the general routine procedure is described by the standard of the type of protection flameproof enclosures "d" - IEC 60079-1. An essential characteristic for the testing and assessment of the explosion protection is the test for non-transmission of an internal ignition (clause 15.2). It is of decisive importance for the design and construction of "d" products. This is why the flame transmission test has been selected as the characteristic of interest which is to be conducted in the program "Flame Transmission - FT".

The property of flame transmission is determined with the Test Sample "FT" for three different nozzles and with a defined gas-air mixture selected according to IEC 60079-1. The gas-air mixture filled chambers are connected via flange with three exchangeable nozzles. After ignition in Chamber A the participant observes if there is a flame transmission into Chamber B or not.

To increase the statistical significance, ten tests shall be made with each nozzle. On the basis of three configurations of the Test Sample "FT", one gas-air mixture and ten ignitions each, a total of 30 explosion tests must be performed by each participant for the program "Flame transmission". The workload to perform this program is approximately 3 working days.

You can find all detailed information, descriptions and data for the performance of the program in the download area below.