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MAWP
Maximum Allowable Working Pressure
The maximum pressure allowed in a piece of equipment e.g. vessel or pipe at its designated temperature.
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MCC
Motor Control Centre / Switchboard

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MIPEG
An electronic load indicator and monitoring system fitted to cranes - can store data for future analysis and maintenance planning based on the actual crane usage.
Manufactured by Norwegian firm Datainstrument AS
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MMI
Man Machine Interface
A dated term superseded by SCADA
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MODBUS
This Protocol is a messaging structure developed by Modicon in 1979.
It is used to establish master-slave/client-server communication between intelligent devices.
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Monel
A nickel-copper alloy which combines high strength with high ductility - these usually being a trade off in metals selection.
Also offers excellent general corrosion resistance. Commonly used in seawater applications.
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MPI
Magnetic Particle Inspection. A form of NDE used to detect surface cracks on castings.

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MTBF - Mean Time Between Failures
The time interval between 2 failures of a component. The reciprocal of the failure rate.

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MTO
Material Take Off
A count of all materials needed to complete a task
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MTTR - Mean Time To Repair
The average time taken from the failure of a system until it is successfully restarted.

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Multi Flange Connector
A one piece flange unit which permits transition from pipe line flange to instrument tubing.

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Mux - Multiplexer
A switching device that sequentially connects multiple inputs or outputs in order to process several signal channels with a single A/D or D/A converter

Further Reading

 


MW
Molecular Weight

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Cable Gland Selector
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