Reducing pump noise by good maintenance

The problem

While considering the implementation of a noise control programme, a major soft drinks manufacturer was advised that a pump used for transferring fruit juice concentrate from 200 litre drums to the product mixing tanks was producing A-weighted noise levels of 103 dB.

The solution

A preliminary inspection showed mechanical deterioration of the pump which required a complete overhaul to include:

• rewinding the drive motor;
• replacing the motor bearings;
• checking and cleaning the pump bearings;
• repacking the pump glands.

The cost

Nominal costs for staff time. (1995)

The result

A noise reduction of 27 dB.

Source

Report details supplied by Sound Research Laboratories Limited, Wilmslow.