Jump to content

  • Quick Navigation
Photo

Hourly tests on a high speed line


  • You cannot start a new topic
  • Please log in to reply
5 replies to this topic

#1 FurryCrow

FurryCrow

    Grade - Active

  • IFSQN Active
  • 6 posts
  • 1 thanks
0
Neutral

  • United Kingdom
    United Kingdom

Posted 21 August 2018 - 09:34 AM

 Long time lurker, first time poster, i have been tasked with finding a solution on how to conduct hourly consecutive metal checks without stopping the line? The line runs at 120ppm and the customer does not want us to stop the line to conduct the test. :helpplease: 



#2 cdelucadwcc

cdelucadwcc

    Grade - Active

  • IFSQN Active
  • 6 posts
  • 1 thanks
0
Neutral

  • United States
    United States

Posted 21 August 2018 - 11:41 AM

Based on your metal detection method, would it be possible to run your hourly check for a set interval of time with no positive readings to show you are in control?



#3 Ryan H.

Ryan H.

    Grade - MIFSQN

  • IFSQN Member
  • 166 posts
  • 54 thanks
38
Excellent

  • United States
    United States
  • Gender:Male
  • Interests:Sports, traveling

Posted 21 August 2018 - 11:59 AM

Mthazz: I had experience with this. I had a line running over 200ppm and had to ensure metal checks were performed without stopping as well. It's really about, depending on your process, can you do it? The product I was referring to was being packaged and i put the metal detectable stick in the packaging and ran it through with the product within the small gap the machine allowed. Of course it would shoot off each time, but you get use to it! There was always just enough space to put it through, and the machine had no issue detecting it up. 

 

It's all about whether your able to depending on your machinery. But it can be done. 


All the best, 

 

Ryan Heavner 


#4 Scampi

Scampi

    Fellow

  • IFSQN Fellow
  • 2,832 posts
  • 779 thanks
344
Excellent

  • Canada
    Canada
  • Gender:Not Telling

Posted 21 August 2018 - 12:48 PM

I will caution you against only 1/hour checks at that line speed.........that equals a possible 7200 units on hold between checks

 

Also.......why would you stop the line?  The metal detector should be checked against normal operations..........otherwise how do you really know it working?  There should be a bin where the bar plus the item fall into

 

 

Call the manufacturer and ask a technician to come to assist you understand how your metal detector functions


Edited by Scampi, 21 August 2018 - 12:48 PM.

Because we always have is never an appropriate response!


#5 Ryan H.

Ryan H.

    Grade - MIFSQN

  • IFSQN Member
  • 166 posts
  • 54 thanks
38
Excellent

  • United States
    United States
  • Gender:Male
  • Interests:Sports, traveling

Posted 21 August 2018 - 12:50 PM

I would like to double up on Scampi's comments. IF you choose to perform checks every hour, your going to have a lot of product pass by. Be prepared to hold that much product in the event you have an issue with your metal detector. I would review your history to see if you usually have an issue or not. Something to consider. 

 

Great point Scampi. 

 

Good Luck! 


All the best, 

 

Ryan Heavner 


#6 012117

012117

    Grade - MIFSQN

  • IFSQN Member
  • 227 posts
  • 67 thanks
31
Excellent

  • Earth
    Earth
  • Gender:Male
  • Location:Philippines
  • Interests:Validation, basketball, chocolatier

Posted 22 August 2018 - 12:37 AM

On my point, If I validated properly the equipment and maintained as planned, would not that be so concern with the hourly check quantity, but agree that it will be always be the balance of how much you are willing to place on hold and how confident you are with your equipment. It is also better to do it while it is running, as what you "monitor" is that it function exactly as intended during normal operation. If there is an ample space (considering safety), you may want to insert there your test piece. Howver, it would be better to assist if somehow, the layout is presented.

 

Anyway, on 2nd thought, have you validated your equipment against successive contaminant (including the rejection device), if you are running 7200 pieces per hour then it would be 2pcs per second, the metal detector performance can be affected by the distance between next product and Xray will be dependent on the scanning length of the equipment. I would recommend if you haven't validated yet, that you do check your MD for successive contaminant.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

EV SSL Certificate