ITT i-ALERT2, Инструкция по применению

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i-ALERT2 Application Guide 9 of 64
The majority of industrial equipment will tend to have a failure probability distribution similar to that of Figure 3, where the
risk of failure for equipment is highest upon startup, sometimes termed “infant mortality” and will decrease to some
relatively constant probability of failure over time.
Knowing that most equipment will follow the failure pattern of Figure 3 should guide M&R practitioners to select condition
monitoring equipment that can:
1. Quickly identify defects or problems when new equipment is started before they cause severe damage
2. Help establish confidence that a newly commissioned machine is operating within specific limits
3. Maximize the ability to detect randomly occurring failures after a successful startup.
The i-ALERT2 Equipment Health Monitor is designed to provide all of these functions while still maintaining cost
effectiveness. Always consider the benefits a new condition monitoring technology will provide against these proven failure
curves to ensure it will be effective. Implementing new technology just for the sake of saying you have the latest and
greatest technology will lead to a lot of wasted money and effort.
INTRODUCTION TO CONDITION MONITORING
CM and PdM tools available today are great enhancements to the traditional visual / audible Inspections and augment
regular operators’ inspections. Whether performing a simple visual inspection or using the most sophisticated tools
available the process is fundamentally the same. There are 4 Steps:
o
NOTICE
• We have to notice or detect that we have a problem with a piece of equipment.
o
INVESTIGATE
•
Once detected, we can investigate and analyze the problem to determine the root cause.
o
RESOLVE
• After determining the root cause, we can correct the problem and, if possible, improve the machine by leaving
it in a precise state.
o
DOCUMENT
•
By documenting our results, we are able to verify that the problem has been solved and communicate our
successes to others.
It is important to thoroughly understand each of these steps. Valuable time is often wasted when too much emphasis is
placed on any one component.
Figure 3: Most common failure probability pattern for industrial equipment
Random
Higher risk at startup
Time