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The objective is to monitor the operation of cryogenic plants effectively, as the available skilled manpower is much limited and also the operation being at very low temperatures and also from safety point of view (due to involvement of high pressure). Even though, the current helium liquefiers are fully automated, still there are large numbers of plant operative parameters, arising from auxiliary equipments which needs to be monitored and controlled for the smooth & trouble free plant operation. Further, the important task in the cryogenic facility is to keep a watch on the plant healthiness, advance indication about the possibility of problem progressiveness by means of pre-warning or alarms, so that the remedial action can be taken well before the actual failure affects the plant operation, so that the plant down time is kept almost negligible. Our paper will describe our work carried out at TIFR, Mumbai.
