skookum Posted November 24, 2011 #1 Share Posted November 24, 2011 I found this footage taken in Peterborough. Really weird. http://www.telegraph.co.uk/news/newsvideo/weirdnewsvideo/8909819/Strip-club-CCTV-captures-lucky-couples-escape-from-exploding-manhole.html Link to comment Share on other sites More sharing options...
Englishgent Posted November 24, 2011 #2 Share Posted November 24, 2011 The local Fire Brgade said it was possibly wires overheating? I am no expert in this matter but I would have thought that wires overheating would not have caused such an explosion unless there was some other flammable element such as gas involved. Link to comment Share on other sites More sharing options...
skookum Posted November 24, 2011 Author #3 Share Posted November 24, 2011 The local Fire Brgade said it was possibly wires overheating? I am no expert in this matter but I would have thought that wires overheating would not have caused such an explosion unless there was some other flammable element such as gas involved. I was wondering about that, I can see melting and arcing wires being a source of ignition but what is the fuel for the fire. Plus being phones surely loads of people would have reported their phones dead after as I can't see the wires being intact after that. Link to comment Share on other sites More sharing options...
MissMelsWell Posted November 24, 2011 #4 Share Posted November 24, 2011 (edited) Beleive it or not, they've done an episode of this on Mythbusters. It CAN happen and it's pretty impressive. On Mythbusters, they actually managed to create a mini sewer, and blow their test manhole covers like 100ft in the air. Sewers are full of waste, and waste creates methane which is highly explosive. if it's ignited, it most certainly can explode and send manhole covers flying! In fact, the test sewer explosion they built on Mythbusters looked a lot like the one in the video in the OPs link. It's rare that it happens though... there are all kinds of conditions that have to be met, so it's not like any old sewer can rocket itself into oblivion, but its possible, typically with older sewer systems. The newer ones are designed to prevent this kind of accident. Edited November 24, 2011 by MissMelsWell Link to comment Share on other sites More sharing options...
Englishgent Posted November 25, 2011 #5 Share Posted November 25, 2011 Beleive it or not, they've done an episode of this on Mythbusters. It CAN happen and it's pretty impressive. On Mythbusters, they actually managed to create a mini sewer, and blow their test manhole covers like 100ft in the air. Sewers are full of waste, and waste creates methane which is highly explosive. if it's ignited, it most certainly can explode and send manhole covers flying! In fact, the test sewer explosion they built on Mythbusters looked a lot like the one in the video in the OPs link. It's rare that it happens though... there are all kinds of conditions that have to be met, so it's not like any old sewer can rocket itself into oblivion, but its possible, typically with older sewer systems. The newer ones are designed to prevent this kind of accident. Hi MissMelsWell. Yes, I fully agree that manhole covers over sewers can do this. However, the news article in question says this manhole covers some electrical cables, not a sewer. Link to comment Share on other sites More sharing options...
Professor T Posted January 26, 2013 #6 Share Posted January 26, 2013 (edited) Check this out. This is a sewer explosion taking out an entire roadway.. [media=] [/media]And this Is a man lighting Methane gas and sending himself & a manhole cover flying. http://youtu.be/7Aq7WjwaVkE Edited January 26, 2013 by Professor T Link to comment Share on other sites More sharing options...
BiffSplitkins Posted January 28, 2013 #7 Share Posted January 28, 2013 I found this footage taken in Peterborough. Really weird. http://www.telegraph...ng-manhole.html That almost looks like pyrotechnics to me. Link to comment Share on other sites More sharing options...
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