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620 views
09:47 Oct-12-2006

hjkim

NDT Inspector, Welding Inspector
South Korea,
Joined Nov 2005
2
Give me a definite answer please.


What should be known for proper interpretion of liquid pentrant indiction?
(1) previous manufacturing processes performed on the part.
(2) technique used to in applying and removing the pentrant
(3) Method used to clean part prior to inspections
(4) all of the above
(5) None of the above


 
00:46 Oct-12-2006

Nigel

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1094
Re: Give me a definite answer please. ----------- Start Original Message -----------

Hello HyunJoo

My opinion (no such thing as definite answers in NDT - everything is ring-fenced with conditions) as follows;

1) Definitely - I think that's an easy one with no explanation/clarification required

2) Definitely (though I did start typing "Hmmm"). You need to know that indications are not caused by using the wrong process, e.g. use of post-emulsiifiable penetrant on a rough-surfaced, unmachined casting or that defects have been missed through insufficient penetranetdwell time.

3) The easy answer is to say "Yes" again, and therefore Yes also to (4) and No to (5). I WILL say yes as the penetrant lab should have a Technical Instruction or Procedure available for each particular part with ALL relevant information on it.

Regards

Nigel


What should be known for proper interpretion of liquid pentrant indiction?
: (1) previous manufacturing processes performed on the part.
: (2) technique used to in applying and removing the pentrant
: (3) Method used to clean part prior to inspections
: (4) all of the above
: (5) None of the above
------------ End Original Message ------------




 


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