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Posted By Carl
As our soldering frequency has increased and is at times prolonged, I have recommended that solder fume should be extracted at source and would appreciate advice on any advantages and disadvantages of the two following bench mounted systems:
a) tip extraction.
b) Extraction arm with hood.
Would the above require testing under COSHH regulations?
Also, as an alterative, would it be acceptable to extract and vent solder fumes outside (without filtering) by adapting an existing wall extractor unit - fitting hoses reduced to an appropriate diameter and feeding to source?
Regards
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Posted By Chris121
If an extraction system (regardless of type) is necessary to reduce the solder fume to below the workplace exposure limit (this should be determiend by air monitoring)then yes - it will be necessary for statutory examinations every 14 months.
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Posted By Andrew Wilson
Carl,
I had this issue where I previously worked. We used a system which was bench fitted that drew the fumes away to the rear of the workstation, thus reducing the potential for solder fume becoming airborne and into the breathing zone. the fumes were then filtered and the air was returned to atmosphere.
COSHH monitoring was undertaken and the results showed that the exposure was well below the WEL (as now is) and we were advised that because of the extremely low results we did not need to retest unless there was a significant change in the process and/or equipment.
As for just extracting and returning to atmosphere, be careful as the LA may become involved as you are emitting fumes/particulates and it may be possible you shall require a permit to do so.
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Posted By Dean Cross
Hi Carl,
I visited an electronics work shop where they had a number of employees soldering for prolonged periods. They used flexible extraction arms with hoods, which worked reasonably well. As with most control measures they are only effective if people use them correctly.
Whichever system you decide on, it will need to be maintained, examined and tested under COSHH Reg 9 as they are all types of Local Exhaust Ventilation (LEV) systems.
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Posted By Chris Packham
When considering extraction of solder fume, one method which I have found most effective is the downdraft bench. This draws the solder fume down and away from the operator. It does not result in any obstruction on or around the workbench. Flexible arm extraction systems have to have the capture system very close to the workpiece and source of fume to be effective. Extraction tip on soldering iron system clog easily and need frequent cleaning.
Chris
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