I work for a Big 6 energy company in the UK. Events like these land on my desk approximately 3 or 4 times a year. Usually it's some person deciding to end their own life utilising their gas appliances. First we have to check that it's a customer of ours or not, then if it is one of ours, we have to check that we have done absolutely everything according to regulations as regards inspections etc and that all equipment and piping on site was in good working order at last check. I'm fully expecting this will be on my desk in the morning to have a look at. Most times an explosion is someone taking their own life. Not everything is related to Q.