cbm of rotating equipment

8/13/2019 CBM of Rotating Equipment

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Presented By:

Harshal Aglawe

Sch. No. 132116203

Condition Based Monitoring of Rotating

Equipments


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Introduction The condition of rotating machinery, including

motors, pumps and blowers, is commonlymonitored by systems that record vibration levels.

However, gathering this information in the field

using portable equipment can be time consumingand labor-intensive, and once-a-month snapshotsdo not provide adequate coverage of essentialequipment.

Some vibration-monitoring systems continuouslyguard expensive equipment such as steam or gasturbines, generators and compressors that arecritical to the uninterrupted operation of a facility.


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What vibration analyst do?

A vibration analyst transmits the data to a centrallocation for study.

When applied to pumps, vibration analysis is

used to:

Track progressive stages of bearing failure

Identify imbalance and misalignment

Identify pump flow problems and resonance

Identify mechanical wear in couplings, bearingsand support structures

Detect other defects such as lube failure, soft foot

and broken rotor bars.


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Monitoring Methods

Faults generate specific vibration signatures.

The route-based and online vibration monitoring

methods are widely used.

Industries actually need a reliable means ofcontinuously monitoring a wide range of

production machinery automatically.

Which must be capable of assessing signs of

trouble and warn personnel.


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What is New???

An innovative and practical solution is nowavailable to meet the need for online monitoring

of motor-pump trains (even in remote locations)

that are essential to operations in refineries and

petrochemical plants.

Automated diagnostics packages provide the

means to predict pump performance for improved

maintenance.

The utilization of digital automisation gives the

prevention of unplanned shutdowns.


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Automated analysis

Continuous monitoring with updates within 60seconds so operators can react quickly

Integration of machine health information with

control systems

Centralised problem-solving to eliminate

excessive trips to the field

Diagnostic information provided for decision-

making rather than just raw data.


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Operation

al


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Transmitter.

Monitors and automatically analyses AC inductionmotor-centrifugal pump trains

Receive continuous inputs from;

o

Tachometer readings for shaft speed,o Motor flux inputs from a flux coil,

o Temperatures measured at the motor surface.

Data collection is repeated every 25 seconds.


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Embedded capability (Automisation)

By introducing embedded systems it is easier tomonitor the rotating machines continuously

Earlier maintenance personnel were responsible

for collection of data and report the results to

operating personnel.

The sensors are simply mounted on the machine

for which it was designed, the device is located

nearby, and the data generation and analytical

functions are automatically deployed, with results

communicated directly to the control system host.


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Smart machine health management

Transforms complex rotating equipment data intoactionable information

Integrates real-time diagnostics into process

automation systems

Empowers operators to improve plant availability

and performance.

An estimated 68% of machine failures occur

following an outage but with continuous onlinemonitoring it can be reduced by 90%.


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Maintenance

Information captured by various advancedtechnologies can be used to reduce maintenance

costs, extend equipment life and increase overall

plant reliability.

Data delivered to their fingertips from advanced

monitoring systems, operators and maintenance

personnel can predict with reasonable accuracy

when each pump, control valve or field instrument

will next need maintenance.

The idea of predictive maintenance is to service

equipment in time to minimise physical

deterioration and unexpected failures


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Maintenance

Even more effective is a combination of predictiveand reliability-based maintenance.

All machinery is prioritised in order of importance

to the overall mission.

Critically important equipment must be

maintained for maximum reliability.

Portable vibration analysers applied to rotating

machinery, provide snapshots of a machineshealth at the time the data was manually

collected.


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Supporting technologies The information could be accessed only in the field by

technicians connecting and operating handheldcommunicators and is uploaded to a maintenancedepartment computer.

But with the emergence of new and improved opencommunication protocols the way for the delivery ofboth process measurements and diagnostics viaanalog signals back to central locations is possible.

Software is developed to capture the data being

transmitted from shop floor to maintenancetechnicians.

A new way to obtain and use information aboutconditions in the field without leaving the comfort andsafety of the maintenance shop.


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Supporting technologies The data is processed, organised into a database

covering all instrumentation on a control network andpresent it on graphic display.

Maintenance personnel are able to use this assetmanagement software in a number of beneficial ways

o Faster start-ups through easy device configuration,

o Streamlined calibration and troubleshooting

o Early warning alerts of deteriorating performance,preventing costly unscheduled shutdowns andinitiating predictive maintenance practices

o Automatic documentation of maintenance activities.


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Benefits

Smart machinery health management is aconcept that extends digital plant architecture to

all types of rotating equipment.

improved performance of essential motor-pump

trains.

Apart from vibration monitoring program; it

improves overall machinery health.

Reliable field-based information readily availableempowers operators to improve plant

performance and warnings enable maintenance

personnel to prevent unplanned downtime.


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cbm of rotating equipment

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