Re: Condensate line erosion problems

oops. I mean API 570, Pipng Inspection Code:Inspection, Repair, ALteration and Rerating of in-service Piping Systems. We're using the second ed. Get in touch with your Inspection Dept and start talking about the test and inspection frequency, identify location of thckenss survey, assesing and ranking risk, agreeing on the retirement thickness, setting up the database, emthod of evaluation etc.

• In PipingDesign@y..., Samuel Liu <samuel.liu@a...> wrote:
  >
  > Did you mean API RP 576 Inspection of Pressure-Relieving Devices?
  I'm
  > inetresting in the pipe material selection to protect piping from
  two-phase
  > erosion. Is there any than SS?
  >
  > Regards,
  >
  > Samuel
  >
  > -----Original Message-----
  > From: mechengr1977 [mailto:mechengr1977@y...]
  > Sent: Thursday, November 28, 2002 4:47 AM
  > To: PipingDesign@y...
  > Subject: [PipingDesign] Re: Condensate line erosion problems
  >
  >
  > not suprising. If youre aware of the API 576 , this could have
  been
  > avoided. there are a lot of reported incident involving the
  failure
  > of the piping in the condensate system. Guys from Furmanite,
  Plidco
  > and Team Inc
  > makes their living fixing leaks in the condensate piping system. 2
  > phase flow is mostly what hit us and undersize pipe. What we did
  is
  > check the vel and pressure drop. piping failing the criteria were
  > marked and inlcuded in the wall thikcness survey. If the metal
  > thinnning is trending up, we are ready/ and prepared and when
  > opportunity comes we implement the fix. can be use using the CRA
  at
  > elbow, enlarging the pipe, upgrading the trim of the control
  valve,
  > etc.
  >
  > --- In PipingDesign@y..., "Arif patel" <marif_patel@h...> wrote:
  > > Haridas,
  > >
  > > Can you provide velocity in the header ? The high velocity in
  > condensate line may be a cause for erosion.
  > >
  > > Arif Patel
  > > AM Consulting Engg Co.
  > > Saudi Arabia
  > >
  > > ----- Original Message -----
  > > From: t_haridas@r...
  > > To: PipingDesign@y...
  > > Sent: Monday, November 25, 2002 1:00 PM
  > > Subject: [PipingDesign] Condensate line erosion problems
  > >
  > >
  > >
  > > Hi, Gentlemen,
  > > Here Iam calling your attention to corrosion-erosion
  problem
  > noticed in
  > > Steam condensate lines in our Refinery / Petrochemical units.
  > >
  > > Due to the severe erosion problems in Medium
  and
  > High steam
  > > condensate lines, the elbows and reducers at
  d/s
  > of CVs are
  > > punctured. One typical layout of a Medium
  pressure
  > condensate
  > > line CV station is enclosed for reference.
  > >
  > > The erosion points noticed were :
  > >
  > > (i) the elbow at the d/s Globe Valve (by-pass line)
  > >
  > > (ii) the ecc. reducer and elbow at the d/s of CV
  > >
  > > (iii) the Control Valve trims (316 SS)
  > >
  > > (Embedded image moved to file: pic26443.pcx)
  > >
  > > Query :
  > > 1) Kindly let us know your expert opinion on above failures
  > > 2) Do you have any suggestion / comments on the piping
  layout
  > used for CV
  > > stations
  > > 3) Remedial actions reqd to avoid such failures in future
  > >
  > > Best Regards
  > > T Haridas
  > >
  > >
  > > [Non-text portions of this message have been removed]
  > >
  > >
  > >
  > > Discussion List sponsor: Texas Flange - a good source for
  > information on industrial flanges, all they ask is for referrals
  for
  > designs they help with.
  > > 877-610-8924.
  > > www.texasflange.com
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  > >
  > > [Non-text portions of this message have been removed]
  >
  >
  > Discussion List sponsor: Texas Flange - a good source for
  information on
  > industrial flanges, all they ask is for referrals for designs they
  help
  > with.
  > 877-610-8924.
  > www.texasflange.com
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