A gas expert says he has never seen such a serious gas explosion during his 25-year career after today's Christchurch event.
A gas explosion at a home in Northwood, Christchurch today left a house that struck the ground, 17 others affected and six people injured, some seriously.
Master of plumber Martin de Gouw said that in general the New Zealand gas industry is very well regulated with a good focus on education and compliance.
He said that people could have confidence that the systems in place would keep them safe, but also said that mistakes were happening and that an investigation of what happened would reveal the true cause.
De Gouw said it was a reminder that the gas systems must be inspected regularly, and that if people smell gas, they should immediately take action.
"I've been in the business for 25 years and we haven't had anything like that at that time, to my part in Christchurch," he said.
"Though images from the site today were horrific and I am sorry for the passengers and it is obviously a huge devastating event that they went through."
De Gouw said that when he first saw the movie was "My First Instinct" this has been turned into matchsticks ", you know?
" The devastation not only for the house, but also the neighbors ̵
" Our thoughts go out to these people nearby because it will live with them for a long time. "
He said" if tragedy happens, industry must learn from it and then move on and make installations smarter and safer – but that's not to say there are unsafe installations out there.
"I suspect something has gone wrong with the incident that happened there, but we just have to wait and see what the result is."