Piping Stress Analysis and Piping Engineering Services

Transient analysis deals with transient fluid properties, such as pressure pulsation, mechanical vibration, valve closure, pump start/stop, relief events, slugging, and water hammer.

These factors can be present in normal pipelines and facility piping.

Reciprocating Compressor piping may resonate with mechanical vibration or pressure pulsation.

Slugging in Pipelines occurs in multiphase systems. The slug causes significant forces at changes in direction and can result in piping failures or damage to adjacent equipment and piping.

Mechanical Vibration Measurement and Analysis analyzes transient response of a system to excitation forces. This can be a simple natural frequency comparison with excitation frequencies, a force spectrum analysis, or a time history analysis. Sometimes the nature of the vibration being experienced, vibration measurements are required to determine the cause. Measurements can also be used to confirm design corrections are effective. We are experienced with flow induced vibration problems, as well as pulsation or acoustic vibration situations.

Water Hammer Analysis addresses events which can cause pressure surges resulting in equipment failures in pumps, turbines, and valves. Diagnosing and removing potential causes of water hammer events minimizes failure risk. Water hammer can be caused by sudden valve closure or pump trip, start-up/shut-down of facilities and equipment. These events can cause unexpected and uneven fluid forces; equipment and systems must be designed with this in anticipation to prevent failure.