Thks for input. Interesting.
I have no direct experience with magnets but as you noted, magnets designated as CCPs have been previously discussed here (within various formats) but, AFAI could see, with no decisive conclusion. For example –
I suggest that from the POV of the magnet’s operation, the hazard is failure to remove (ferrous?) metal considered to be hazardous so that the critical limit(s) for it’s operation presumably demand (a) the specification of “hazardous” metal and (b) the specification of measurable parameters which ensure the (complete) removal of metal contaminants defined by (a).
[sort of borrowed from current CFIA-MD hazard intro –
CFIA, MD-haccp detail.png 294.15KB
Assuming that (a) is answerable (eg regulatory, customer, machine), the haccp query on yr premise seems to be whether a magnet can validatably, consistently, achieve (a) when maintained within certain machine parameters (stable?) and which are (I presume) readily monitorable plus (hopefully) readily adjustable in the event of a failure of a critical limit.
Can it? Evidence ?
So far I have not seen any support data either way but I suspect the MD industry believes (hopes) that the answer is negative. And possibly the source of my attachment in earlier post.
Rgds / Charles.C
PS - Kraft also have some partially relevant opinions on this topic -
haccp extraneous material.pdf 48.34KB