Johnathan Paoli
During a technical media briefing on Thursday evening, Joburg City manager Floyd Brink said engineers, experts and all technicians combed through the scene to identify the causes and they came out with three possibilities, namely methane gas ignition due to infiltration of sewerage into the underground water systems, ignition of natural gas mixed with air within the same systems, and the ignition of gas from a burst gas pipe.
However, Brink said investigations are continuing to find the source of the gas leakage.
“At this stage only one of the above potential causes appears to be warranted. Accidental leakages of natural gas into the service duct reached explosion concentration levels of between 5% to 15% and were ignited by a source unknown at this stage. The source of gas in the service duct is unknown,” he said.
Brink said a team was sent into the area to test
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