finally it implicates 10X10 specimen irrespective of originnal
thickness, and acc to B31.3 upto -29 °C for category D no impact
requirement, i don't no about Stoomwezen?
any way for economical design you may choose high/ultra high strength
steels to reduce the thickness. members please also share your views.
On Aug 12, 7:32 pm, Rahul P <rahulpi...@googlemail.com> wrote:
> Hello All,
>
> Can anyone explain me about the Impact test requirement of material as
> per Stoomwezen rules ?
> from ASME 31.3 we can find the Impact test requirement for CS, as per
> thickness and minimum design temperature.
> But in Stoomwezen rules there is a minimum requirement of rupture
> energy of 27 J.
> I have to design a pipe class with -20 deg C as minimum temperature
> for 145 bar pressure and size of 30 inch & carrosion allowance of 6 mm
> With these design condition I expect to have very high thickness for
> pipe.
> is it possible to have cofirm 27 J requirement for such high thickness
> of CS ?
> Or it is advisable to change to LTCS material ?
>
> thank you,
>
> RahuL P
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