Definition(s)
PRV
Pressure-relief valve.
Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards
Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards
PRV
A flow-control device installed as part of the circulating system able to open and shut in response to operating conditions in order to maintain preset limits for pressure applied to parts of the circulating system to prevent over pressurization.
Source: ABS Guide for Classification and Certification of Managed Pressure Drilling Systems, September 2017. Global Standards