RE: PIPE EROSION PROBLEMS

From: <Steve>
Date: Tue May 07 2002 - 04:19:00 EDT

There are a quite a few abrasion resistant materials about. You could look at S50C or perhaps NK-SL80 which is said to be readily weldable. If temperatures are low, then rubber lining may help, although at 250kg/cm^2 flange sealing will require extra special attention. Ceramics will probably bee too thick. Your pipe wall appears only to have about 2mm allowance for erosion. If you go to XXS pipe you will pick up another 3.7mm sacrificial thickness at the expense of further increasing velocity.

Cheers

Steve McKenzie

-----Original Message-----
From: shreedhar [mailto:shivapuji@mis.co.ae] Sent: Tuesday, May 07, 2002 6:42 PM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] PIPE EROSION PROBLEMS Importance: High

You can approach this problem in 2 ways.

1. You can try to reduce the velocity of the stream so as to reduce the erosion of the existing facility. Plus, try to reduce the number of bends i.e. directional changes.
2. Replacement of your line with any exotic material or any inner lining will be expensive. You can compare it with the replacement of the line over a fixed period. Finally, it depends on your how costly your downtime is !

Regards,
Shreedhar Shivapuji.

• Original Message ----- From: <Venugopalan_P_Kumar@ril.com> To: <PipingDesign@yahoogroups.com> Sent: Monday, May 06, 2002 4:41 PM Subject: [PipingDesign] PIPE EROSION PROBLEMS

> We are experiencing some erosion problems due to water carrying coke fine
> particles impinging on pipes and fittings.
> The pressure of the water is about 250kg/cmsq.velocity of about 9.5
> m/s.Material existing is carbon steel sch.160 pipe size 06".We would like
> to know about suitable metallurgy for the fittings to be used after
> replacement of the existing ones.This could be a change in base material
or
> lining inside the carbon steel.We wish to avoid additional filters or
> change the line size or use of long radius bends more than 1.5D.
>
> Regards
>
>
>
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Received on Tue May 07 04:19:00 2002