deanc,
Thank you for the link. Are there any other backup systems used to protect against a tether/gag failure? Perhaps woven netting or something of the sort?
When performing hydrostatic testing on large tube & header assemblies, expandable plugs are often used in place of welded plugs. This presents a major problem if the air is not properly bled. This may be more of a ballistics question, but what type of backup safety precautions are typically...