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Riser VIV Screening

Riser VIV Screening

Riser VIV Screening

(OP)
In DNV-RP-F204, Section 4.1.3 stated

"For screening purposes a 1-year velocity with associated velocity profile is considered conservative."

Does this means that for riser VIV screening, only 1 year return period environmental data needed to applied even for operating condition?
I understand for subsea pipeline VIV screening, 100 year return period environmental data is applied as per DNV-RP-F105 for operating condition.

Can somebody explain to me the logical behind this 1yr RP approach in riser VIV screening?



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