Monitoring the machine condition by vibration measurement is possible not only for Cargo pump el. motors, but also for Cargo pumps.
Before performing vibration measurements of such a pump, it is important to correctly determine the measurement points at which such a vibration measurement should be performed. It is important to take measurements at the correct location on the pump so that the received signal may indicate the part of the machine that is causing excessive vibration. The location of the points for one of the pumps located on one of our customers’ ships can be seen below.
Below are the measurements before the fault was detected and after the recommended works were performed by crew.
After taking the measurements, high values were visible at several points and high signals on the FFT velocity spectra, which indicated a problem with the impeller. We recommended checking the impeller in the pump and its seating on the shaft. The crew performed the work and noticed a crack in the pump housing. Significant improvement is visible also on FFT spectra and in measurement readings.
FFT velocity spectrum before performed our recommendation:
FFT velocity spectrum after performed our recommendation:
Marine Machinery Condition Monitoring: The Role of Vibration Analysis
Marine Machinery Condition Monitoring plays a crucial role in ensuring the reliability and safety of onboard equipment. Vibration analysis is a key diagnostic tool, offering valuable insights into the condition of pumps and enabling early detection of potential failures.
For cargo pumps handling flammable liquids or chemicals, proactive vibration monitoring is essential to prevent hazardous situations. This advanced technique helps identify issues such as rotor imbalance, bearing wear, mechanical play, shaft misalignment, and hydraulic problems like cavitation.
By detecting and addressing these problems early, Marine Machinery Condition Monitoring reduces the risk of sudden failures, enhances operational safety, and extends equipment lifespan while preventing costly repairs.
Investing in Marine Machinery Condition Monitoring ensures a safer, more efficient, and reliable fleet.