RE: {Distribution Forum} Cleaning Steam Pipe before Commissioning
wayne kirsner
Stan (Gent) might want to look on my steam accidents page for the photo’s that go with this paragraph. It’s under the heading of University of Massachusetts Expansion Joint Failure, Amherst, MA.
Strainer removed from trap assembly draining the low point in the 2000' of 20" Mains. Clogging material is pipe scale loosed from pipe walls as a result of pipe cleaning by the start-up contractor who, afterward, neglected to clean the strainers. While not the ultimate cause of this Accident (it was a proximate cause), the pictures speak to the residual pipe scale present in new pipe and the need for strainers to protect trap orifices. This strainer on the lowest elevation trap drained the most liquid and so caught the most crud.
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Stan Gent <sg...@seattlesteam.com> Jun 07 01:06PM -0700
What an interesting challenge. With such a long pipe I would look to the oil
and gas industry for advice. I recall much discussion on mechanical cleaning
with a device referred to as a "pig".
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