"Tom Warner" wrote in message
...

Several reports have stated that the regulator should have prevented too
much
pressure in the house even after the pressure mismatch. Is this true?
Can the
regulator next to the meter reliably regulate when the supply pressure is
that
high?

Then again I don't think there were any other leaks inside houses on that
street
other than the one house that was destroyed, so perhaps everyone else's
regulators worked ok.


Many regulators are designed to handle only so much inlet pressure. Over the
rated pressure they "lock out", or just slam shut, stopping the gas flow. It
is possible that many regulators do not do this, or the diaphragm in the
regulator ruptured from the excessive gas pressure, spewing gas out the
vent.
Greg