RE: [PipingDesign] Re: Seawater cooling for power plant

From: <Arif>
Date: Thu Apr 05 2007 - 00:22:00 EDT

How to you protect SS from chloride attack if used, without coating, for Seawater?

A J

Lead Design Engineer

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From: PipingDesign@yahoogroups.com [mailto:PipingDesign@yahoogroups.com] On Behalf Of Dacharaju Krishnamohan Rao
Sent: 05 April 2007 07:19
To: PipingDesign@yahoogroups.com
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.

Alok Dubey <terrion_786@yahoo.co.in <mailto:terrion_786%40yahoo.co.in> >

Sent by: PipingDesign@yahoogroups.com
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04/04/2007 08:10 PM
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Subject
Re: [PipingDesign] Re: Seawater cooling for power plant

Hi JUn,
stainless could be duplex (22 Cr%,...) or super duplex (25%) and that was
the intent. These two grades are used extensively in subsea or marine enviornment.
Cheers!

• Original Message ---- From: jun_atibo <jun_atibo@yahoo.com <mailto:jun_atibo%40yahoo.com> > To: PipingDesign@yahoogroups.com <mailto:PipingDesign%40yahoogroups.com>

Sent: Tuesday, April 3, 2007 1:52:53 PM
Subject: [PipingDesign] Re: Seawater cooling for power plant

Stainless steel pipe material for sea water service?? Not in our plant.

Cupro-nickel material may be OK for US Navy application but in process/power plants where the coolant header (sea water service) is about 108 " NPS size - well you might have to rethink the economics of utilizing such material.

• In PipingDesign@ yahoogroups. com, "Bestweld, Inc." <fittings@.. .> wrote:
  >
  > Nearly all U.S. Navy seawater systems are piped in Copper/Nickel
  > alloys 706 (90/10) or alloy 715 (70/30), those that are not
  > copper/nickel are titanium or stainless steel. These are
  buttwelded or
  > belled-end IAW MSS SP119.
  >
  > Ray Stubbs, Jr.
  >
  > Quoting blenrayaust <blenrayaust@ ...>:
  >
  > > For seawater applications the choices are :
  > >
  > > GRP refer ISO 14692 or ISO 10639 for specifications and design
  > > Duplex or Super Duplexc stainless Steels. www.nidi.org or search
  for
  > > Zeron 100
  > > ABS, PVC or PE for smaller sizes
  > > Steel dipped in PVC resin or FBE coated
  > >
  > > Search the internet for web istes on desalination
  > >
  > > Geoff Stone
  > >
  > >
  > > --- In PipingDesign@ yahoogroups. com, akif ozmen <maozmen@> wrote:
  > >>
  > >> Dear Friends,
  > >>
  > >> I am working in an industrial company in gas (air gases, CO2,
  LNG,
  > > LPG, Helium, acetylene, narcos) , steel and power generation
  > > businesses. Currently we are going to extend our power generation
  > > capacity with a new coal-fired power plant. We plan to employ
  > > seawater as cooling agent. Does anybody inform what materials are
  > > generally used in such works. Is there any website link
  explaining
  > > more about such a project to have prelimenary knowledge.
  > >>
  > >> Regards,
  > >>
  > >> Akif Ozmen
  > >> Mech.Eng.
  > >>
  > >>
  > >>
  > >>
  > >
  ____________ _________ _________ _________ _________ _________ _ _
  > > ____________ __
  > >> Don't get soaked. Take a quick peak at the forecast
  > >> with the Yahoo! Search weather shortcut.
  > >> http://tools. search.yahoo. com/shortcuts/ #loc_weather
  > >>
  > >> [Non-text portions of this message have been removed]
  > >>
  > >
  > >
  > >
  > >
  > > ============ ========= ========= ========= ==
  > > PipingOffice - Excel Spreadsheets for Piping Calculations
  > > http://www.pipingof fice.us/
  > > ============ ========= ========= ========= ==
  > > Main site: http://www.pipingde sign.com
  > >
  > > Yahoo! Groups Links
  > >
  > >
  > >
  > >
  >
  

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[Non-text portions of this message have been removed] Received on Thu Apr 05 00:22:00 2007