81 Who remembers the explosions that came from the FBI building? The official story was that it was a pressure relief valve due to steam release. I only question this bc I am a boiler operator. I've seen many pressure relief valves in action. However I've never heard one do this. Typically it is (twitter.com) posted 218 days ago by Joys1Daughter 218 days ago by Joys1Daughter +81 / -0 8 comments share 8 comments share save hide report block hide replies
Mythbusters did a show where they damaged a pressure relief valve to launch a hot water heater skyward. As I recall, it took a lot to accomplish their goal.