Hi Kellio
I understand your system as: 1
Metal detector checking individual packs of frozen vegetables and then a second that checks the finished case, which contains more than one pack.
In this instance:
METAL DETECTOR 1: This is checking the primary pack - this will be a
CCP
METAL DETECTOR 2: UNLESS the packs checked by detector 1 are not sealed, or have been reopened and sealed after detector 1, this step should not be a
CCP. (if the bags are not sealed, or need to be reopened after MD1, then MD1 may not be situated in the 'correct' place)
What is the risk to the actual product from contamination within the case?
Why is there a MD for the case? is there a genuine risk of metal becoming associated?
If MD2 is genuinely required it is maybe more of an engineering support function, rather than food safety i.e. shows you when machines are starting to breakdown, rather than identifies
metal contamination of the physical product.
Stuart