Positive Material Identification.

Do you ever heard about Positive Material Identification or we call it P.M.I?
what do you think? is it under destructive testing or Non destructive testing?
i have experiance about this thing and this material verification program.
this device using isotop or x-ray. this unit is use to show the compositionof the material
i experiance in using XRF technology. XRF is x-ray Flourescent. this x-ray is 2/3 less then hospital x-ray for chest.
now days, all refinery and tops site that involve with H2S line or we call it sour line need to check for the composition. it is now very portable and we can download all the data.

dislike: can't delete data that we don't want in the PMI device. need to delete all the data.

What is Non Destructive Testing?

Nondestructive testing (NDT), also called nondestructive examination (NDE) and nondestructive inspection (NDI), is testing that does not destroy the test object. NDE is vital for constructing and maintaining all types of components and structures. To detect different defects such as cracking and corrosion, there are different methods of testing available, such as X-ray (where cracks show up on the film) and ultrasound (where cracks show up as an echo blip on the screen). This article is aimed mainly at industrial NDT, but many of the methods described here can be used to test the human body. In fact methods from the medical field have often been adapted for industrial use, as was the case with Phased array ultrasonics and Computed radiography.
While destructive testing usually provides a more reliable assessment of the state of the test object, destruction of the test object usually makes this type of test more costly to the test object's owner than nondestructive testing. Destructive testing is also inappropriate in many circumstances, such as forensic investigation. That there is a tradeoff between the cost of the test and its reliability favors a strategy in which most test objects are inspected nondestructively; destructive testing is performed on a sampling of test objects that is drawn randomly for the purpose of characterizing the testing reliability of the nondestructive test.