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Metals pieces too small to be detected by metal detector


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MQA

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Posted 04 September 2011 - 01:10 AM

Check that your preventative maintenance is also tight.

Investigate each piece of metal the Metal Detector fails or passes. Which part of your equipment, or which part of your maintenance does it relate to? Ensure corrective actions are in place. How can you avoid a repeat offence?

It's not just about the metal detector. As others in this thread have already mentioned:
  • Size and shape of the metal piece does matter
  • Calibration of the equipment is vital
  • Ensure your staff know who to use the Metal Detector and change the settings if need be for different sized products
  • Moisture can affect the impact of the Metal Detector. So can heat. If your products are still a little warm, the Metal Detector will not work. And yes, I have come across businesses that package heated product.


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Tony-C

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Posted 04 September 2011 - 06:38 AM

Check that your preventative maintenance is also tight.
Investigate each piece of metal the Metal Detector fails or passes. Which part of your equipment, or which part of your maintenance does it relate to? Ensure corrective actions are in place. How can you avoid a repeat offence?


Helps if you read the posts :rolleyes:

Martinblue Posted 28 May 2011 - 03:57 PM
We can’t get rid of the machine where the metals are coming from due to some operational reasons…Any suggestions……………..



MQA

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Posted 05 September 2011 - 01:28 AM

I did read the posts!

I was simply adding extra info on determining where the metals pieces were derived from.


Helps if you read the posts :rolleyes:




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Martinblue

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Posted 17 September 2011 - 10:39 AM

Dear All,

Thanks for your views and recommendations. Equipments in questions are being monitored on regular bases and maintenance plan is in place now.

i really appreciate your support.

regards
martin blue



Testick

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Posted 25 November 2011 - 11:27 PM

fit an electro magnet?

Regards

Luke



Tony-C

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Posted 27 November 2011 - 03:47 PM

fit an electro magnet?

Regards

Luke


:doh:
As myself and several members have indicated prevention is better than cure!


Carlos Leoncini

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Posted 27 November 2011 - 10:55 PM

Hi, I am getting late in this interesting discussion so... I will apologize in advance if I am asking something that was already discussed before. I wonder which is the source of metal??. If you don’t find the source, the sensitivity of your metal detector (MD), will be the least of your problems. MDs should not be used as filters but to monitor the effectiveness of the other steps of your process in reducing or eliminating physical risk. So, in this aspect, my recommendation is to find the source or root cause. Best regards.



GMO

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Posted 04 March 2012 - 07:07 AM

Hi, I am getting late in this interesting discussion so... I will apologize in advance if I am asking something that was already discussed before. I wonder which is the source of metal??. If you don’t find the source, the sensitivity of your metal detector (MD), will be the least of your problems. MDs should not be used as filters but to monitor the effectiveness of the other steps of your process in reducing or eliminating physical risk. So, in this aspect, my recommendation is to find the source or root cause. Best regards.




Yep you needed to read all of the posts :doh:

So, Martinblue, I know it's been a little while but you said last time "a maintenance plan is in place now". Does that mean the equipment wasn't being maintained previously or that a plan was in place to replace it? What was the outcome?

We had an issue recently where we had small (1mm approx) pieces of metal found in one customer's products. Too small to be detected by the metal detector and thin anyway. It took us about a week to find the source becuase we had several false hopes where we thought we'd found it but hadn't. Of course during this time where we were responding and saying "we think we've found the cause, it's "X" and we've removed that from the system..." then another complaint came back, we probably had four in total. It was one of the worst weeks of my life professionally and partially caused by a member of staff not completing a task as thoroughly as they should (an engineer was asked to thoroughly audit a machine and he found no issues, a week later, the cause was found on that machine.) Had the issue continued for longer, we would have lost the business. I can't urge anyone enough that if they start finding metal fragments that they eliminate the cause. Our customer didn't care that a 1mm piece of stainless steel wasn't going to hurt a customer!





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