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Guess water hammer is even more dangerous than I thought!

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Tony Conner_2
Tony Conner_2 Posts: 443
in THE MAIN WALL
... www.kirsner.org. He investigates waterhammer accidents just like this one. He's authored some excellent articles, and they're posted on his site. He is THE waterhammer guy.

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  • Vermonter_3
    Vermonter_3 Posts: 21
    Guess water hammer is even more dangerous than I thought!

    http://news.yahoo.com/s/ap/20070718/ap_on_re_us/manhattan_explosion
  • Tony Conner_2
    Tony Conner_2 Posts: 443
    Go To Wayne Kirsner's Website At...

    ... www.kirsner.org. He investigates waterhammer accidents just like this one. He's authored some excellent articles, and they're posted on his site. He is THE waterhammer guy.
  • Barbarossa
    Barbarossa Posts: 89
    Ah the Big Apple

    Quite typical for the Big Apple just not on such a scale. Having been a steam troglodyte as a kid you see stuff like this or the potential for this. Occasionally when the tunnel floods the insulation saturates heat loss goes way up and starts condensing at a rate greater then the trapping can handle or it cruds up and trap fails shut. Then the water slug is accelerated to a turn usually an elevation change and the pipe or fittings separate.Depending on location back then you could have 180 - 200 psig steam in the east 40's.Between the gas leaks Con Ed's powerlines in the tunnels Manholes would pop on a regular schedule. The standing joke was that visitors could keep any manhole cover they could catch.
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