What happened? What was source of ignition? Lack of competence? Whose competence is questioned here? ExCB, ExNB, manufacturer, designer, purchaser, installer, operator, maintainer, repairer?
All these questions above shall be addressed to responsible ones.
Who all are they?
It is better to be proactive.
Keep up good work!
Arpad
There is a company providing Ex services. They do follow the standard:
For Ex we do have IEC 60079-19.
on a conference I had the opportunity to highlight various topics from
IEC TS 60079-42:2019 Explosive atmospheres – Part 42: Electrical safety devices for
arpadveress 
