Re: Seawater cooling for power plant

The failure is not due to flow disturbance if an SS pipe is used for sea wtaer service. The concern is SCC. And the moment it starts, failure is sure to happen - its just a matter of time. There are other pipe material that is suitable for use for sea water application . One is a cement lined CS pipe (coated and wrapped for U/G application) or fiberglass pipe - both have a pretty good service life.

• In PipingDesign@yahoogroups.com, "Arif Javed" <ajaved@...> wrote:
  >
  > How to you protect SS from chloride attack if used, without
  coating,
  > for Seawater?
  >
  >
  >
  > A J
  >
  > Lead Design Engineer
  >
  >
  >
  > _____
  >
  > From: <a href="/group/PipingDesign/post?postID=ItK4lhB0t4i4DhoAIHlNN09ocGxwsNFJDdVFDl0mxlOM75i-T9jKYi2r1TV9gqMlhKaCOM2Yi-xas9vp2VO5hQFdZR8Q">PipingDesign@yahoogroups.com</a>
  [mailto:PipingDesign@yahoogroups.com]
  > On Behalf Of Dacharaju Krishnamohan Rao
  > Sent: 05 April 2007 07:19
  > To: <a href="/group/PipingDesign/post?postID=ItK4lhB0t4i4DhoAIHlNN09ocGxwsNFJDdVFDl0mxlOM75i-T9jKYi2r1TV9gqMlhKaCOM2Yi-xas9vp2VO5hQFdZR8Q">PipingDesign@yahoogroups.com</a>
  > Subject: Re: [PipingDesign] Re: Seawater cooling for power plant
  >
  >
  >
  > Use of SS316L and GRP for seawater service is also in practice.
  > There is also an improvement of applying a Specail (paint) Coating
  > inside
  > on SS316L for an extended life where seawater flow disturbances
  occur
  > such
  > as downstream of valves.
  > regards,
  > D.K.M.Rao.
  >
  >