Course Ref No: V2

Vibration as a Condition Monitoring Aid
A mature course designed to provide an understanding of the techniques used for vibration monitoring of rotating plant. Topics will include monitoring during on-load and variable speed conditions, fault detection and diagnosis.

Duration:2 Days

 Location:Selected venue or client site
 

Objectives:

 By the end of the course, participants will be able to:

¨ Know which standards to apply to assess the condition of plant.

¨ Understand the procedural requirements of balancing.

¨ Appreciate which monitoring techniques suit which plant.

¨ Understand how machines produce vibration at different frequencies.

¨ Recognise a number of vibration signatures used to diagnose plant faults.

 

Course Content:

DAY 1

¨ Review of Condition Monitoring:

  1. Maintenance policies, monitoring options, definition, monitoring classes, trends, benefits

¨ Vibration Priciples:

  1. Review of simple harmonic motion, definitions, acceleration/velocity/displacement units and conversion
  2. Free and forced vibration, behaviour in resonance, amplitude and phase, damping
  3. Adaptation to machines, including methods for resonance testing

¨ Measurement and Analysis Basics:

  1. Filters, integration, broadband and narrowband measurements, measuring instruments
  2. Demonstration of all the above features

¨ Basic vibration transducers:

  1. Accelerometer
  2. Velocity transducer
  3. Displacement transducers, (eddy probe and inductive probe)
  4. Demonstration of transducers on a model machine

¨ Vibration standards:

  1. Pedestal vibration and shaft eccentricity, balancing
  2. Discussion of balancing techniques and requirements
  3. Demonstration of balancing
DAY 2

¨ Vibration monitoring systems:

  1. Off-line monitoring data collectors, on-line monitoring on load and variable speed (run- up/down) suitability for auxiliary and large turbogenerator plant, specification and features.
  2. Review of requirements for detecting the existence of a fault, alarms applied to trends of overall levels and single frequencies; polar diagrams and ellipse alarms.

¨ Diagnosis of faults:

The following fault conditions produce changes in vibration: the reason for the changes will be discussed together with case histories which are presented in a variety of formats.
  1. Balance
    • manufacturing problems
    • build accuracy
    • operational effects
    • permanent and temporary bends, rubs
    • thermal asymmetry
    • loss of parts
  2. Discussion of balancing techniques and requirements
    • parallel, angular, axial
  3. Looseness
    • support system and rotating parts
  4. Whirl
    • oil and steam generated
  5. Cracked shafts
  6. Gearboxes, and rolling element bearings
  7. Electric motor problems
 

Who should attend:

The course is geared towards those personnel whose work includes responsibility for the operation or maintenance of rotating plant or for its vibration measurement systems. It will suit technicians, engineers, control room engineers, and interested operations and maintenance managers.

  

Contact: Sue Ward
Course Administration Officer		 Tel: Fax: Email: 01744 616712
01744 758527
pruftechniktraining@compuserve.com

For additional training course information and request form.