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Control and Instrumentation GlossaryWe have 13 entries in our Glossary for this letter. MAWP Maximum Allowable Working Pressure The maximum pressure allowed in a piece of equipment e.g. vessel or pipe at its designated temperature. Further Reading MCC Motor Control Centre / Switchboard Further Reading 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 Manufactured by Norwegian firm Datainstrument AS Further Reading MMI Man Machine Interface A dated term superseded by SCADA Further Reading MODBUS This Protocol is a messaging structure developed by Modicon in 1979.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. Further Reading 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. Further Reading MPI Magnetic Particle Inspection. A form of NDE used to detect surface cracks on castings. Further Reading MTBF - Mean Time Between Failures The time interval between 2 failures of a component. The reciprocal of the failure rate. Further Reading MTO Material Take Off A count of all materials needed to complete a task Further Reading MTTR - Mean Time To Repair The average time taken from the failure of a system until it is successfully restarted. Further Reading Multi Flange Connector A one piece flange unit which permits transition from pipe line flange to instrument tubing. Further Reading 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 Further Reading |
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