Measurement of vibration and noise level at power plant and refinery companies that represents a condition monitory for the health of machines

The measurement of vibration and noise level of varies machine at any power plant station and refinery companies helps the management of the companies to observe the variation of vibration and noise level for each machine during the operation period. It helps for the indication for the health monitoring of the machine and gives a warning, before break-down occurs [1]. Two companies were chosen at Bejy town 200 km north of Baghdad, to conduct vibration and noise level measurement values with the standard of the general form of vibration level evaluation criteria and noise document[2]. The companies chosen are Bejy power plant and Bejy northern refinery. Four units of the power plant were selected, having 100–120MW electric capacity of each. Three units having 100 H.P pumping capacity were chosen. Vibration meter with its accessories manufactured by B α k (Denemark) and noise level meter manufactured by the same company above were also used. It was found that high level of vibration measurement was due to rotating unbalance and misalignment, causing high level of noise at certain points.