difference between ECT, RFET, IRIS, MFL and APR

[gaurav]

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