Hi all,
Can anyone please give some guidance on PMI Testing standards and requirements.
Is PMI testing required for SS material Trim on a CS body valve.
Who determines it. If the quality requirement says all ss pressure controlling and pressure containing parts and parts that are exposed to process fluids need to be PMI tested whether all materials are covered(flanges,valves,pipes,fittings,bolts nuts washers etc.Mainly PMI is tested for SS material
I heared that PMI testing cannot be accurate and if some discripancy occures the chemical test of materials is recommended.Can any one please tell is there any recomendation by standards.Does client decide the extend of testing simply by some assumptions or to make life difficult for vendors.
Regards,
Deepu Varghese
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