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326 views
09:40 Feb-05-2007
Dave Thomas
Penetrant materials

I find nothing in the ASTM 1417 spec. that covers the following issue:
When large tanks of penetrant are used to apply penetrant by dipping, when the tank level drops to a point that more penetrant is needed to bring the level up, if the new quantity of penetrant to be added is a different batch number, but the same manufacture and qualified to the same specifications, is it permissible to mix the new batch number with the existing batch?



 
00:29 Feb-16-2007
Terry Warby
Re: Penetrant materials ----------- Start Original Message -----------
: I find nothing in the ASTM 1417 spec. that covers the following issue:
: When large tanks of penetrant are used to apply penetrant by dipping, when the tank level drops to a point that more penetrant is needed to bring the level up, if the new quantity of penetrant to be added is a different batch number, but the same manufacture and qualified to the same specifications, is it permissible to mix the new batch number with the existing batch?
------------ End Original Message ------------

If you carry out the necessary functional tests to demostrate that the replenished (mixed batch)penetrant in the tank continues to detect the necessary indications then there should be no problem, but only if the new penetrant added is of the same type and from the same manufacturer as the old.



 


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