Pulsations and Vibrations

The varying flow caused by reciprocating pumps, compressors or process conditions leads to a pulsating flow within the connected piping. Excessive pulsation amplitudes can lead to mechanical vibrations and thereby fatigue failure of the piping or supporting. To avoid these problems good system design is key and here DRG can be your perfect partner.


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Compressor API 618 Studies

Our pulsation studies cover acoustical and mechanical aspects according to API 618 DA3.

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Pumps API 674 and API 675

DRG conducts pulsation studies according to API 674 or for metering pumps according to API 675

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Vibration Root Cause Analysis

Why does your vibration occur? What is the most economical fix?

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Pulsation Studies

API618/API674 pulsation and mechanical response studies.

Pulsation Dampening

Design and sizing of pulsation dampeners for reciprocating pumps and compressors.

AIV, Acoustically Induced Vibrations

Acoustical fatigue can occur due to acoustical noise downstream of valves.

Mechanical Response

How does a system respond to a shaking force.

Flow Induced Turbulence

Broadband kinetic energy is generated by abrupt flow changes in bends and tees.

Vibration Measurements

Field measurements identify whether remedial action is required.

Fatigue Assessments

Determine if fatigue failure could occur due to vibrations in the piping.

Vortex Shedding

Vibrations may arise due to vortices shed from dead-leg branches and protruding probes.

Related Training Courses


CAESAR II dynamics

Become competent in using CAESAR II as a tool for solving and identifying dynamic issues in piping.



Investigate the impact on piping of pulsations due to pumps and com­pressors and evaluate so­lutions, such as compression dampeners or geo­metric changes.