Anindya,Samsul,
Thanks for your help.
I understand that the criteria of ρV2<200,000 kg/m/sec2 for flare line is as per NORSOK P-001 to avoid flow turbulance and acoustic vibration.
Request experts guidance on calculation methodology for lines having higher ρV2> 200,000 kg/m/sec2.
Regards,
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Manoj Sarkar