Nondestructive Testing (NDT) of Pressure Vessels

Notes on the Industrial Technologies for Crack Detection and Condition Monitoring

If I understand you correctly, you are seeking information as to why Magnetic particle inspection is preferred over magnetic particle inspection.

Refer to http://www.smsystems.com.au/archived-pdfs/NDI_ConditionMonitoring.pdf

"Notes on the Industrial Technologies for Crack Detection and Condition Monitoring" where it is clearly stated " Disadvantages are that there are safety issues, the equipment is cumbersome, it requires at least two operators, a film processing facility is usually required before results can be seen, and it is not good at defining the presence or dimensions of small cracks"

Radiographic examination is expensive compared to magnetic particle analysis. The vessel and filler materials are common, the procedure is likely pre-qualified, so if the welder is certified, then there is no justification to incur the additional expense. Mag test the root and finished weld, from both sides if accessible.

This has been very common procedure for over 40 years because of its proven reliability.

Tell the rights I or not.

Having read Section VIII Division 1, I have fathomed that the angular welded joint shown on circuit Fig. UW-16.1 (c), represents a welded joint of type-7, a category – D., according to table UW – 12. And in this case the full radiography, and also spot radiography are not applied.

I am right?

Therefore likely on my drawing design engineer regulates – magnetic examination.