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Corroded Buried Steam Line

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Charlie4255
Charlie4255 Member Posts: 2
in Strictly Steam
Our church has a buried steam line that serves two buildings.  Dec '08 the line failed and was replaced with a fusion bond carbon steel pipe.  It has corroded through and must be replaced again.  The corrosiion is from the outside.  The backfill is sand and pea gravel.

The contractor is proposing to use a DuraBond X-TecTruCoat Schedule 40 pipe with cathode protection via a sacrificial anode.

I suspect the premature failure is either from the wrong type pipe, the wrong type backfill or a combination of the two.

Any suggestions?

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  • Steamhead
    Steamhead Member Posts: 16,832
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    What size pipe

    and how long?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • jumper
    jumper Member Posts: 2,246
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    where is the corrosion ?

    One spot or the whole thing has rotted ? Air plus hot water on steel is bad. If a coating works it would be very good. A drained conduit is a good long term investment.
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