[MW:23301] difference between ECT, RFET, IRIS, MFL and APR

Hello experts,

I'm currently in search of the advantages and disadvantages of ECT, RFET, IRIS, APR and MFL in heat exchanger tube testing. The info that I need are:

- time taken to complete the inspection per tube
- level of tube cleanliness
- material suitability
- % of equipment error
- type of defects detected and undetected including under baffle
- defect sizing capability

Thanks in advance

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