Wherever such requirements there client specify the chloride content
normally it should not be more than 50ppm for carbon steel job and
25ppm for Stainless steel jos as per my regular experience.
On Sep 28, 8:40 am, GOPU NAIR <gopunair5...@yahoo.com> wrote:
> 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_...@yahoo.com> wrote:
>
> From: Kannan <kannan_...@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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