Machines and Reliability

Machines and Reliability

Often the most unreliable and troublesome equipment on site is the rotating equipment.


When solving reliability problems, this can be at the expense of efficiency (e.g. increasing wear ring clearances increases recirculation which increases the power consumption of the machine for a given delivery).


Machinery seals can also be the primary source of leaks so selection and use of the correct seal and seal environment is important to ensure such losses are minimised.


The seal arrangements on machinery handling potentially flammable or toxic fluids also need to be addressed to mitigate against accidents which often can form part of the COMAH case for such sites.

The lubrication environment is also key to ensuring the long running performance of bearings and other components so it is important to ensure that this is specified and maintained.


Plant uprates increase the demand on machinery and this can decrease the mean time between failures, so reviewing the potential effect of increased flows, pressures, temperatures, etc. on the machine needs to be addressed prior to any change in duty.


Our Rotating Equipment Machinery specialists can offer a number of services including:

  • Identification of machinery failure modes and mechanisms
  • Root cause investigation
  • Specifying and managing repairs
  • Machinery improvements to increase plant reliability and efficiency

We have over 30 years’ experience in the maintenance and installation of machines including most types of centrifugal and positive displacement pumps, reciprocating compressors and agitators.


We can use historical data in order to develop operations and maintenance procedures specifically tailored to the needs of the client and can train personnel in their use to ensure equipment performance is not compromised due to maloperation and inadequate maintenance regimes.


The machines and reliability group is backed up with support from the materials group which can identify problems in materials selection or poor repair.

Case Studies