The following guidelines and references are sources of valuable information that those working with new compressor, pump, and piping systems and also design changes to existing systems need to be aware of.
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The GMRC is the leading US organization involved in gas machinery industry. In addition to research, training, and conferences, the GMRC has developed many guidelines for reciprocating and centrifugal compressor systems.
API RP 688, Pulsation and Vibration Control in Positive Displacement Machinery Systems for Petroleum, Petrochemical, and Natural Gas Industry Services, is currently available as a Recommended Practice (RP). The fundamentals of pulsation and piping system vibration analysis are presented, including theoretical basis, modeling techniques, and field testing.
The second edition of API 688 is being written as a normative standard to be published in early 2016. API 688 will address the major aspects of pulsation and vibration analysis currently contained in API 618 (reciprocating compressors) and API 674 (positive displacement pumps). API 688 will also include requirements and design approaches for screw compressors and screw pumps. In the future, pulsation and vibration specifications will be based on API 688, and this content will be removed from API 618, 619, 675, 675, and 676.