If it was Oil & Gas Pipeline and ISO 15156' complaince was mandatory, SS316 wouldn't be allowed as per table A.2 of ISO 15156-3.
Regards,
Manpreet Singh
On Fri, 25 May 2012 04:53:37 +0530 wrote
>
Hi Vinod,
Generally austenitic stainless steels are very popular materials in
pharmaceutical industry due to hygiene and cleanliness issues. The selection
may vary from 304L 316L/LN and to the higher ends also.
Alternative could be duplex S.S also(see as attached).
The other options could be fluoro-polymers.But this is fairly new area in
terms of MOC.(seethe DuPont article)
I would think based on the operating parameters presented below a choice
between austenitic S.S or duplex could be ideal.
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario, Canada.
Email-pgoswami@sympatico.ca,
pgoswami@quickclic.net
-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of Aniket Gupta
Sent: Tuesday, May 22, 2012 4:13 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:14337] MOC for High H2S gas under pressure
You can use Carbon Steels with Nace Quality ( Controlled Composition of
Alloys).
Ex SA 516 60 ( Nace for Sulphide Cracking) Some of the clients want Heat
Treatment after fabrication.
Aniket Gupta
On 5/20/12, vnbhatt@gmail.com
> Respected Material Experts,
>
> We have a pharmaceutical client inquiry where they have gas media with
> 60 % H2S gas in the mix with 500 PPM moisture flowing from piping,
> vessels and shell-tube exchanger under pressure of 37 bar gauge.
>
> With many experienced brain on group, I seek details as to what MOC to
> be employed, what quality checks and what corrosion allowance??
>
> Appreciate guidance.
>
> Regards,
>
> Vinod Bhatt
> Sent on my BlackBerryR from Vodafone
>
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