Re: Re: Seawater cooling for power plant

From: <Alok>
Date: Thu Apr 05 2007 - 13:52:00 EDT

Hi Jun,
I do agree with you.
best regrads

• Original Message ---- From: Jun Atibo <jun_atibo@yahoo.com> To: <a href="/group/PipingDesign/post?postID=ZsO5-wKxT7S8IPythvMr5BHll2-3G_ZGfCUvCOe_FOkpONWixkN0GjvEocpWdgjmSnzKcMDMZn6t4-iJBNyvt_WK">PipingDesign@yahoogroups.com</a> Sent: Thursday, April 5, 2007 1:39:16 PM Subject: Re: [PipingDesign] Re: Seawater cooling for power plant

From the previous post.
... use of SS316L .. for sea water application.

And SS316L is not similar nor equivalent to "enhanced super stainless steel" UNS N08367. Not only that, the test covered by the alleghenytechnology is more of a tube that a large bore dia pipe normally use in heavy industry for cooling service. Considering cost, availability of material and duration of fab/installation for large LSTK project - my preference will be "plastic" pipe rather than the exotic for sea water application.

• Original Message ---- From: Dacharaju Krishnamohan Rao <dk_rao@qp.com. qa> To: PipingDesign@ yahoogroups. com Sent: Thursday, April 5, 2007 12:37:33 PM Subject: Fw: [PipingDesign] Re: Seawater cooling for power plant

Following is NACE article on Stainless Steel Materials for Seawater Application

www.alleghenytechno logies.com/ ludlum/Documents /Seawater. pdf

regards,
D.K.M.Rao.

• Forwarded by Dacharaju Krishnamohan Rao/MD/QGPC on 04/05/2007 12:29 PM -----

Dacharaju Krishnamohan Rao <dk_rao@qp.com. qa> Sent by: PipingDesign@ yahoogroups. com
04/05/2007 07:18 AM
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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>
Sent by: PipingDesign@ yahoogroups. com
04/04/2007 08:10 PM
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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> To: PipingDesign@ yahoogroups. 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.
  > >>
  > >>
  > >>
  > >>
  > >
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  > >
  > > ============ ========= ========= ========= ==
  > > PipingOffice - Excel Spreadsheets for Piping Calculations
  > > http://www.pipingof fice.us/
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  > >
  >
  

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[Non-text portions of this message have been removed] Received on Thu Apr 05 13:52:00 2007