4 replies to this topic

[kmasan]

Dear All,
We are producing Plastic Product to (Preforms) to Mineral Waters company such as Pepsi and Coke.

In our Injection Molding line we have magnet device which is in before hopper. this device can capture the ferrous pieces from the Raw material if any.

since it is Plastic raw mateial, rarely we receive the ferrous pieces from RM.

Is we include this Magnet device as CCP?

If No means, how to justify the same?

If YES means, how to monitor the CCP? Frequency , outside calibration etc, what is the standard etc?

Kindly hlep me on this issue.

thanks and regards
K.masan

[Charles.C]

Dear kmasan,

Welcome to the forum !

Is we include this Magnet device as CCP?

Depends on yr risk analysis for your process, eg equipment, history, any later metal detector ?

If No means, how to justify the same?

Same as above

If YES means, how to monitor the CCP? Frequency , outside calibration etc, what is the standard etc?

Suggest you search this forum for "metal detector". Probably over 100 threads on this question.

Rgds / Charles.C

[Charles.C]

Dear kmasan,

you appear to have essentially repeated yr initial post here -

http://www.ifsqn.com...dpost__p__42013

I suggest any further responses be placed in above thread.

Rgds / Charles.C

[GMO]

Personally I would never have a magnet as a CCP because the effectiveness of that magnet depends on distance, speed of RM past the field and also they have a nasty habit of getting overloaded with ferrous metal and dumping it back into the mix. The main concern is a magnet will not work with high quality stainless steel so you will miss probably one of your most likely contaminants.

A metal detector is a much better idea. If you want to continue using the magnet, I'd still have a metal detector at the end of the line and I'd ensure that magnet was checked and cleaned regularly,

[Foodworker]

It is rare to find metal detectors in use on bottle blowing lines, but most have magnets at some point in the process. I have known some customers insisting on metal detectors.

In reality, these are there to protect the production equipment rather than as a product safety device. If metal, even very small pieces were to actually get to the blow moulder it would probably not form a bottle or the bottle would fail with the pressure of the blower.

Whether you call it a CCP depends upon your own analysis of the hazard
- how likely is it to happen, any records or history that you can use to determine the frequency of occurrence
- If it does happen, what is the risk to the consumer?

If you do determine it to be a CCP you will need to work out a suitable monitoring system which looks at an inspection frequency and measurement/assessment of the retained metal, however this is also good practice even if you don't call it a CCP.

There have been other threads recently about calibration of magnets