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[MW:3337] Re: CL in water

By Materials & Welding
Dear Kannan
 
The extent of Chloride  permitted in water for hydrotesting of SS vessels depends upon the customer specification based on the end use.  Generally customer specifies 25ppm.  In extreme cases they demand choride free (DM) water also. So please follow the customer spec.
 
Gopu

--- On Thu, 24/9/09, Kannan <kannan_cit@yahoo.com> wrote:

From: Kannan <kannan_cit@yahoo.com>
Subject: [MW:3293] Re: CL in water
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Thursday, 24 September, 2009, 1:25 AM


In the context of valve pressure test API 6D calls for max. of 30ppm
chloride for SS and duplex. I do not remember the claus. Pl. have a
look of the std. At site the piping hydrotest chloride limitation is
defined in a API RP standard which I am not able to recollect now.
Moreover having difficulty in achieving such low limits calls for
relaxation at site overruling such std requirement. 50ppm in such case
is a limit accepted by most contractors and clients.

regards
kannan

On Aug 16, 4:18 am, Ali Asghari <asghari...@rocketmail.com> wrote:
> dear all freinds
> can you share  your expriences about the amount of CL in water that used for hydrostatic testing of st.st?because in somewhere i see 25 ppm and another 50ppm is mentioned.which correct & why?
> regards

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