Online Monitoring Systems

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On-Line Vibration Monitoring Systems

Presented by:

Timothy S. Irwin, P.E.

Senior Rotating Machinery Engineer

M&B Engineered Solutions, Inc.

13 Aberdeen Way

Elgin, SC 29045

Email: [email protected]

17 February, 2006

mailto:[email protected]

mailto:[email protected]



M&B ESI

Timothy S IrwinFebruary 2007


What kind of monitoring system do we need?

What options are available for monitoring systems?

Do we need protection? Or do we need only monitoring?

What kind of failure modes do we need to monitor?

Would it be appropriate to reference any industry standards?

What type of monitoring/diagnostic software are weor would we be using?

Some of today’s subject items:

What do we need in a specification to get what we want?



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There are a lot of options

available today. This is onlya portion of what is available

on the market.



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What kind of different permanent monitoring systems are available?• Continuous – monitors signals from transducers continuously

• Polling – Samples signals from transducers on a pre-arranged schedule

• Switches or Transmitters – Sends a signal to the control system

• Permanent transducers with remote connections for monitoring/diagnostics

Another differentiating item is whether the system provides equipment protection

or is purely for monitoring

So to determine what level of monitoring we need, we need to knowwhat kind of equipment the system will be installed on.



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Equipment Classifications:

• Is the equipment expensive to repair or replace?

• Will equipment failure immediately affect operation/production of the plant?

• Will equipment failure create an unsafe condition (EHS)?

• Will equipment failure affect operation/production of the plant after some time?

Answers to the above questions will supply you with the some of the information

that may lead to an appropriate justification for an appropriate level of monitoring.

• What is the equipment reliability history?

What we need to do is set a goal or target for the desired system and then use

the following information to develop the specific details, for anything put a full-

blown protection system some of the following information may not apply.





M&B ESI

Timothy S Irwin

February 2007


Continuous vs. Polling:

What are the differences and why do we consider them?

Continuous:

Monitors the desired parameters on a continuous basis and can

typically be set up to trip the machine under preset conditions

within milliseconds to several seconds as desired.

Polling:

Monitors the desired parameters on a pre-arranged schedule,

the ‘polling’ of the parameter can typically be set from seconds

to once per day. This type of system is not typically used for

equipment protection but is used for alert and danger alarmsfor operations personnel and machinery monitoring and diagnostics.





M&B ESI

Timothy S Irwin

February 2007


Once the level of monitoring is determined (continuous or polling),

which parameters should be monitored?

We answer that with another question:

What kind of component failures are possible?

• What is in the machine? – sleeve bearings, REBs, gears, pumps, low-speed,

high-speed, etc.

• The answers to the above question will determine the appropriate transducers.

• Non-Contact proximity probes

• Accelerometers – Low, high, standard frequencies

• Velocity Coils• Speed Reference

• Phase Reference

• Some process parameters may also be appropriate













M&B ESI

Timothy S Irwin

February 2007




M&B ESI

Timothy S Irwin

February 2007


Are you in an industry or process that requires or uses any of the

standards that are presently in place?

• American Petroleum Institute (API):

• API 670 – Machinery Protection Systems

• International Standards Organization (ISO):

• ISO – 2954:1975 - Mechanical vibration of rotating andreciprocating machinery -- Requirements for instruments for

measuring vibration severity

• ISO – 5348:1998 - Mechanical vibration and shock -- Mechanical

mounting of accelerometers

• ISO – 8042:1988 - Shock and vibration measurements – Characteristics to be specified for seismic pick-ups



M&B ESI

Timothy S Irwin

February 2007


• ISO – 7919 – Mechanical vibration of non-reciprocating machines –

Measurements on rotating shafts and evaluation criteria

-- Part 1: General guidelines

-- Part 2: Land-based steam turbines and generators in excess of

50 MW with normal operating speeds of 1500 r/min, 1800 r/min,

3000 r/min and 3600 r/min-- Part 3: Coupled industrial machines

-- Part 4: Gas turbine sets

-- Part 5: Machine sets in hydraulic power generating and pumping plants

Standards Continued:

• ISO – 13373-1:2002 - Condition monitoring and diagnostics of machines

-- Vibration condition monitoring -- Part 1: General procedures• ISO – 13373-2:2005 - Condition monitoring and diagnostics of machines

-- Vibration condition monitoring -- Part 2: Processing, analysis and

presentation of vibration data















M&B ESI

Timothy S Irwin

February 2007


Technical Specification

• Installation

• Generally site/corporate procurement has site conditions and contractor

requirements documentation, but someone still has to put together the

technical requirements for the installation. This could include:

• Physical description of installation:

• Into existing cabinets

• Installation of new cabinets

• Wiring installation

• Transducer installation – general locations

• Depending on how the project is broken down the Owner,Contractor, and Vendor will all have different responsibilities

within the project.







M&B ESI

Timothy S Irwin

February 2007


What about the vendor support of their product?

• What kind of warranty are you getting? Are there extension options?

• What kind of hardware/firmware/software updates are available to you?

• Does the vendor have any kind of field service available?

• Does the vendor work with your desired Contractor?

Without the proper documentation up front

everyone’s job later will be more difficult

and less efficient.



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