On Mar 18, 1:42*am, Bernhard Kuemel wrote:
Hi!

I have glass tubes filled with liquid CO2 at high pressure and need to
make it safe in case the tube explodes.

1. Substitute another liquid and tell the customers it's CO2. It can
even be a fluorocarbon that will demonstrate the triple point, but at
a lower pressure.

2. Use concentric PC tubes and test, test, test. (But visibility will
be reduced.)

3. Embed in solid transparent polymer and provide a pressure relief at
one end.

4. Use pressure rated steam boiler sight tubes and pass on the
liability to the manufacturer.

5. Buy lots of liability insurance.

DB