Update Seminar
Avanti - In-Depth SOLUTIONS TO MACHINERY &
MAINTENANCE VIBRATION PROBLEMS
Avanti! It means, “to move forward.” If you’ve attended
our Vibration I (“Practical Solutions”)
seminar, you should already be saving your company significant money
by using the practical knowledge and skills taught in this core course
covering vibration analysis, correction, and machinery improvement.
But why stop there? If you’re like over 90% of Update’s
clients, you save your company considerably more by going beyond the
concepts and practical applications you learned in Vibration I.
In Vibration II, or Avanti, we cover a brief overview of the basics
that experienced analysts ‘know.’ Then we move forward to
more advanced subjects, case histories and exercises on the most crucial
topics.
As with all Update programs, emphasis is on the practical essentials
of in-depth analysis and vibration prevention. You’ll not only
learn from the instructor, but also from roundtable discussions on real
situations that you and others have experienced.
In order to move forward, results will only occur as YOU gain the knowledge
and skills to really make it happen!
Course Objective
To ensure a solid foundation in practical vibration fundamentals and
examine key machinery and maintenance vibration topics in greater depth
using practical instruction, real case histories, and round-table discussion.
Previous attendance at Update’s Vibration I (“Practical
Solutions”) seminar is strongly recommended.
Format
- 5-Day Format (½-Day Friday)
Course Outline
- Further understanding of analysis using phase and machinery motion
- Understanding and improving the operation of very slow speed machinery
- Going beyond the ordinary regarding use of instruments
- Further insights on improved spectral analyses including time waveform
considerations
- Practical understanding of various types of balancing in the field
and at the balancing machine
- Advanced gear vibration
- Advanced resonance topics
Course Content
Further understanding of analysis using phase and machinery
motion
- Most common distortions of phase information and how to correct
for them
- Further understanding of the more complex phase situations such
as machines with several faults
- Obtaining phase using several practical means
- Using phase and vectorial understanding regarding why sometimes
correcting one vibration source could result in higher total amplitude
- More complete case histories that strengthen the participant’s
phase ability
- Using strobe to determine synchronous vs. non-synchronous vibration
- Effect of very, very slow beats that confuse analysis/balancing
using phase
Understanding and improving the operation of very slow speed
machinery
- Why hand-feel of very low speed machines seems smooth when the source
is bad, causing premature wear and downtime
- Considerations for special slow speed machinery (ball mills, agitators,
conveyors, cooling towers
- Slow speed rolls and drums
- Converting machinery
Going beyond the ordinary regarding use of instruments for
analysis rather than monitoring
- Various means for obtaining phase readings when the rotor cannot
be shut down
- Obtaining phase with an oscilloscope
- Fast means during routine monitoring to determine when to obtain
more in-depth spectral readings, etc.
Further insights on improved spectral analyses
- A practical approach to time waveform analysis
- Sources for excessive amplitudes at 2 x RPM (second harmonic) that
are not due to misalignment
- Misconceptions and myths regarding axial vibrations
- Confusion regarding misalignment in one direction resulting in large
amplitude in the other direction
Management considerations for preventing problems from happening
in the first place
- Means for preserving case history data for easier presentations
for further training of staff
- Roundtable discussions dealing with the obstacles to changing emphasis
from analyzing to preventing problems
Practical understanding of various types of balancing in the
field and at the balancing machine
- Make vectorial understanding easier for problem solving
- Why some procedures seem confusing or don’t work
- Graphical means for separating static form couple
- Overcoming difficulties in obtaining precision balance in the shortest
time
- Balancing exercises
- Means to easily determine true heavy/light spots
- Overcoming tooling difficulties
- Balancing at resonance
- Easier balancing of narrow and overhung rotors
- Preventing or removing “whip” in rolls
- Means for creating new correction balancing planes
- Eliminating “mythologies” that prevent true precision
Preparing reports that managers will read
- Examples of presentations that are difficult for the non-specialist
to understand
- Common errors made by technically-related report writers
- Focus on management concerns
Gear vibration
- In-depth case histories to eliminate misconceptions on gear vibrations
- More reliable analysis combining gear vibration spectral analysis
with time wave form analysis
Understanding alignment procedures well enough to recognize
why results vary
- Considerations for what goes wrong regarding thermal growth and
calculating thermal growth
- Simple graphical means to overcome bolt-bound and base-bound alignment
problems
- Special alignment tips from other participants
Advanced resonance case histories and exercises
- Improved shaker design (for larger shakers)
- Difficulties in analyzing motions and sources of resonance in vertical
pumps
- Very difficult resonance case histories easily solved with a very
practical approach including:
- Pulsations in bellows
- Generator sparking of brushes
- More on when not to detune
- Pipes cracking throughout a new plant
- Resonance buildup due to reactions with process liquids
- Large gear cracking that shuts down a plant every few months
- Cavitation induced resonance affecting machine section over
50 feet away
- Exercises on participant case histories
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Skills Enhancement