1 reply to this topic

[JACKBRYAN]

Hi all,

This is my first post in this web site. Am one of the young professional who got valuable information and guidance from the discussion here.Thank you all for your contributions.

My question : Inlet line pressure drop for the PSV should be limited within 3% ?...

i) As per API RP 520 pressure drop accounts for non -recoverable losses in the inlet line must be within 3%- What is this non-recoverable means ,whether it includes both static head losses and frictional losses ?

ii) In-house standard says that 3% pressure drop limitation doesn't include static head and effects of fluid acceleration- whether this is OK?..

Am confused in this and unable conclude on this.This is may be a silly question.But i need understanding for this.

Thanks in advance

[JoeWong]

i) As per API RP 520 pressure drop accounts for non -recoverable losses in the inlet line must be within 3%- What is this non-recoverable means ,whether it includes both static head losses and frictional losses ?

Non-recoverable loss includes line frictional loss only.

ii) In-house standard says that 3% pressure drop limitation doesn't include static head and effects of fluid acceleration- whether this is OK?..

OK. Read more in "Only Consider Non-Recoverable Losses in PSV Inlet Line Loss Determination"