No; actually, there was no safety system. The appliance was estimated
to be 50-60 years old. The guy who estimated that was the guy who came
and saved my house (and my neighbors houses) from blowing up. He's
been with the fuel company for 41 years. He says they haven't made
that appliance since he's been doing service for the fuel company.
So it's at least 40 years old.

Lesley