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Thank you. Yes AIV = Acoustic Induced Vibration. Engineering contractors are telling me they need to approach the vendor for formal sizing and confirmation of number of holes and multistage requirements. I feel like it is possible to design and manufacture alone (single stage) if we can provide...

All thanks for the responses. Thanks little inch - I realise it is polite to respond - this is the soonest I was able to recheck this site and respond. Some details: 1. It is a 3 inch natural gas line. (AIV not relevant in liquid lines I understand). This is a manually operated line which...

Hi I would like to design an RO that limits the flow in a line to prevent AIV. I have calculated the allowable flow to avoid >155 db as per enegery institute guidelines. If my RO is sized to stay within that flow, can I just have a single stage RO? If audible noise is not an issue (a temporary...

Hello Is there guidance of how long to purge a flare header prior to Return to service? Felicity