How far an operator can reach into a machine before it becomes an ergonomic problem

prephil

Involved In Discussions
#1
Are there any standards that define how far an operator can reach into a machine before it becomes a problem ergonomically. I have looked at a lot of standards including the below but can't seem to come across anything definitive that gives an exact figure or range.

Involved in a project where an operator will be reaching into a machine approximately every 30s to remove waste. Distance from access point to waste pickup point is approx 533mm. We are proposing using a suction tool to aid in removing the waste which in turn should bring down this 533mm distance.

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prephil

Involved In Discussions
#3
Thanks for that tip, might have been using an incorrect search term. What I was able to gather from EN 547-1 was grip reaches but they seem a bit excessive to me to be ergonomically comfortable, 820mm for the 95th percentile. Maybe this is just the max distance that one can reach in and disregards ergonomics altogether.
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Also came across forearm reach info in EN 547-2 but again it doesn't specify if this is a defined figure for max reach into a machine or not.
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mattador78

Involved In Discussions
#4
Minus the ergonomics bit what are the physical dangers from reaching into the machine itself? Could it be designed out or as you say a suction or grabber tool used replacing somebody reaching into the machinery. Speaking from my own HS experience its better to remove the option of any body part going into a machine if there is potential risk. Funny story related to this many years ago before I became HS qualified a bloke who I worked with stopped me reaching into some machinery to clear a blockage, in typical layman's terms he asked me if I would put my d**k in there I said no chance, so don't put your hands in was his reply. Its a strange rule of thumb but one I have lived by ever since :D
 

prephil

Involved In Discussions
#5
Ya, have heard that comparison used myself and it is a good rule of thumb (or d"*k) . In this case, we are purposely building a manual line and this is unavoidable.
 
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