Definition(s)
Surface Base Pressure
Minimum operating pressure of the hydraulic circuit for supplying power to the function(s). NOTE 1: This is usually a regulated 1500 psig. NOTE 2: Exceptions are to special functions that have a specific pressure requirement, such as shear rams used to cut a specific drill pipe or tubing. NOTE 3: This value is used in Method C accumulator calculations as defined in API 16D and referenced in Annex C.
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards
Surface Base Pressure
Minimum operating pressure of the hydraulic circuit for supplying power to the function(s). NOTE 1: This is usually a regulated 1500 psig (10.47 MPa). NOTE 2: Exceptions are to special functions that have a specific pressure requirement, such as shear rams used to cut a specific tubular.
Source: API STD 53, Blowout Prevention Equipment Systems for Drilling Wells, Upstream Segment, Fourth Edition, November 2012. Global Standards