Pulsation Studies according to API 618 / API 674

A pulsation study by KÖTTER Consulting Engineers goes far beyond examining your pipes. Complex compressor systems are subject to comprehensive influences that must be viewed just as comprehensively.

We keep an eye on all excitation and amplification mechanisms. We watch out for overflowing line branches and valves. We consider vortex shedding and repercussions on the piping system. We always react in time, e.g. using optimised pulsation dampeners or by adjusting pipe routing. This way, you will be able to look at your pipes with satisfaction throughout the planning stage and beyond. You’ll always know just what to do.

  • Studies in accordance with API 618 (reciprocating compressors), API 674 (reciprocating pumps)
  • Reliable results by calculating gas and fluid-induced vibration over time (adaptive method, non-linearity, etc.)
  • Quick damper checks and checks of the power unit loading
  • Investigations on valve dynamics
  • Structural dynamics calculations (over time) for the mechanical vibration and dynamic stresses on components (mechanical response) to be expected in the piping system
  • Acoustic simulation of the system after definition of the relevant scope in agreement with the customer
  • Optimisation of the support concept for piping system and vessels
  • Static pipe stress analysis and reconciliation of the results from the structural dynamic calculations
  • Consultation in detail planning and implementation, e.g. for flow metering systems


The benchmark for conversion: A combination of calculation and measurement.

Most plants are modified or adjusted to new uses during their service lives. In a compressor system, for example, the composition of the gas flowing through may change or parts of the system may be modified. Both will influence the piping acoustics and therefore overall operation.

We do not stop at performing a pulsation study in advance to take this into consideration. We can also include all essential aspects in our analyses and recommendations based on additional measurements conducted on the existing system to support smooth operation in the long term.


Expect more. Get more.

  • You will gain the best planning safety for your project.
  • You may expect practice-oriented solution suggestions from us.
  • You may rely on timely processing of your project.
  • We will provide manufacturer-independent consulting.
  • You can avoid further damage to connected plant parts (e.g. piping, foundations, fittings, etc.).
  • Our pulsation study will enable you to create optimised conditions for performance and service life, e.g. of your machine.
Project Examples

These customers speak a clear language: We say Thank you for your trust!

  • AIR LIQUIDE Deutschland GmbH
  • BASELL Polyolefine GmbH
  • Borealis Agrolinz Melamine
  • Borsig ZM Compression GmbH
  • DEA Deutsche Erdoel AG
  • Dow Olefinverbund GmbH
  • INEOS Köln GmbH
  • Krytem GmbH
  • Linde AG
  • NEUMAN & ESSER Deutschland GmbH & Co. KG
  • Nynas GmbH & Co. KG
  • ONTRAS Gastransport GmbHOpen Grid Europe GmbH
  • PCK Raffinerie GmbH
  • PSE Engineering GmbH
  • RWE Gasspeicher GmbH
  • Sasol Germany GmbH
  • SIAD Macchine Impianti
  • TGE Marine
  • thyssenkrupp Industrial Solutions AG
  • TOTAL Raffinerie Mitteldeutschland GmbH
  • URACA GmbH & Co. KG

We have developed our own simulation software: Nothing will mislead us.

If you have developed something yourself, you will understand its application best. That applies to software as well. Therefore, we designed the simulation software we use for pulsation studies in the late 1990s already, aligned with the standard of highest flexibility, programmed it and never stopped improving it.

The software therefore meets our demands precisely. For example, we can fully focus on the paths to solution with it, rather than on the operation of some software.

Your Contact

Dr.-Ing. Jan Steinhausen

Dr.-Ing. Jan Steinhausen

Head of Department Pulsation Studies

Telephone +49 5971 9710-64