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The course commences with a study of the construction & operation centrifugal compressors. The approaches to the monitoring & maintenance of these machines are described & extensive use is made of case study material to underline the important aspects..

Course Outline

Centrifugal Compressor operate at high speeds and are usually directly connected to the driver so that transmission losses are small. Owning to their high speed, the Units are relatively small for a given capacity and head. Machines that pump gases are known as Fans, Blowers or Compressor, depending on the pressure rise achieved. This course will investigate methods of Control and Operation of such machines as well as design and reliability aspects.


The course commences with a study of the construction and operation centrifugal compressors. The approaches to the monitoring and maintenance of these machines are described and extensive use is made of case study material to underline the important aspects of the course.

Target Audience

This seminar is directed towards Supervisors, Team Leaders and Managers in Maintenance , Engineering and Production . The seminar will also benefit anyone who wishes to update themselves on Centrifugal Compressors, judge the suitability of them for their needs, and learn how to operate and maintain them for the benefit of their organisations.


At the end of this seminar participants will have:

  • An understanding of the construction and operational constraints of centrifugal compressors
  • Knowledge of how to optimally maintain the equipment for the benefit of the company
  • Hints and Tips for practical application of monitoring technologies so as to achieve the best results
Key Benefits
  • enable the delegate to develop a proactive maintenance regime within the organisation
  • give the delegate confidence to carry out failure analyses thereby avoiding repetitive failures
  • allow tighter control of maintenance budgets by the avoidance of unplanned equipment failures in service
Training Methodology

The seminar will be conducted along workshop principles with formal lectures, case studies and interactive worked examples. Relevant case studies will be provided to illustrate the application of each tool in an operations environment. Each learning point will be re-enforced with practical exercises. There will be ample opportunities for discussion and sharing experiences.

Organizational Impact

Effective maintenance and operation of centrifugal compressors is vital to the budgetary success of the operations organisation. On completion of this seminar the delegate will be able to critically analyse the methodologies employed within the organisation and instigate improvements where required.

Personal Impact

Technical knowledge is key to effective control and peer respect within any maintenance organisation; when this is achieved personal satisfaction follows. This seminar will give the delegate the required level of technical knowledge and skill to achieve that personal satisfaction.

  • Understanding of monitoring techniques as applied to centrifugal compressors
  • Ability to put in place measures to quantify equipment condition
  • Effectively maintain and operate centrifugal compressors
  • Interface with and control service providers

Program Outline (1.2 CEUs / 12 PDHs)

Day 1: Introduction to Centrifugal Compressor

  • Principles of Centrifugal Compressors
    • Characteristic curves; invariant representations
    • Surge and stonewall; range of working efficiency
    • Capacity control methods
    • Start-up, vibration surveys
  • Centrifugal Compressor Components
    • Casings, diaphragms, stator, blades
    • Rotor, journal and thrust bearings,
    • Mechanical seals
    • Dry Gas Seals
  • Cooling & Lubrication Systems
    • Air-gas cooling Systems
    • Liquid-gas cooling systems
    • Lubrication systems

Day 2: Mechanical Issues

  • Couplings & Misalignment
    • Different types of couplings, related problems
    • Different methods of alignment
    • Compressor Foundations & Bedplates
  • Bearing Problems
    • Purpose, different types of oil and grease
    • Anti-friction bearings: types, lifetime, mounting, applications, related problems
    • Plain and pad bearings, thrust bearings, operation, maintenance, incidents
  • Rotors & Shafts
    • Single and multi-plane balancing
    • Flexible rotors
    • Balance and critical speeds
    • Cracks in shafts
  • Compressor Failure Analysis
    • Mechanical issues
    • Process aspects
    • Operating parameters; head, flow, rpm, efficiency
    • Effect of wear
    • Vibration Monitoring
      • Vibration limits
      • Orbit analysis
      • Spectrum analysis

Ronald Frend is an engineer specializing in maintenance engineering technology as applied to rotating and static plant. Ron spent fourteen years in the British Merchant Navy as a certificated engineer officer during which time he became the youngest Merchant Navy Engineer Officer to receive Chief Engineer Certification. He then spent five years in Oman during which time he developed and implemented a complete inspection regime for static equipment. He went on to implement a vibration analysis system, and he designed and implemented a new maintenance engineering structure for Petroleum Development (Oman).

Ron rose to become Head of Surface Support (North Oman) with responsibility for all maintenance and maintenance engineering in the surface production field. Moving to the USA as senior consultant to General Motors, he was awarded a B.Sc. in Technology and is a member of the Vibration Institute and the Thermographic Institute with appropriate Institute qualifications.

Ron has his own engineering consultancy working worldwide, developing system-specialist monitoring systems. He has written over fifty technical papers and has published "The Press Monitoring Handbook" (currently is in its second reprint) which is used extensively in the Automotive Industry. Systems designed and set up by Ron have consistently provided return on investment figures of more than 1,000% in the first year. He has worked across the globe, providing consultancy, training and acting as expert witness.
Prerequisites & Certificates

Certificates offered

A certificate of completed Continuing Education Units (CEUs) will be granted at the end of this course. Each participant will receive a complete set of course notes and handouts that will serve as informative references.

Cancellation Policy
If you wish to withdraw from a course, you must advise us, in writing, including the official receipt. Our policies regarding refund are:

More than fifteen business days in advance: a full refund minus $50.00 administration charge.

Fifteen or less business days in advance: a transfer to another course or a credit, valid for one year, to another GIC course can be considered. Credits are transferable within your organization.

If the course has been running for more than 2 weeks, or after the course has started, an 80% credit towards another GIC course may be considered, if notice is received before the start date of the second session. After this time, no refunds or credits will be issued. If a speaker is not available due to unforeseen circumstances, another speaker of equal ability will be substituted.

GIC reserves the right to cancel or change the date or location of its events. GIC's responsibility will, under no circumstances, exceed the amount of the fee collected. GIC is not responsible for the purchase of non-refundable travel arrangements or accommodations or the cancellation/change fees associated with cancelling them. Please call to confirm that the course is running before confirming travel arrangements and accommodations.

Refund Policy: Allow up to 30 days for refunds to be processed.

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