Touch screen tablets - ignition risk? Options  Watch this topic  Print this topic » Normal Threaded

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Polo		#1 Posted : 25 January 2016 11:19:17(UTC)
Rank: Forum user		Hi We've been asked by one of our Contractors for permission to use a touch screen tablet device (I-pad type) in our plant, part of which has electrically zoned areas. We could allow under a permit and use a gas detector, but I was wondering if other forum members had the same issue and how they dealt with it? Thanks
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Ian Bell2		#2 Posted : 25 January 2016 12:58:27(UTC)
Rank: Super forum user		Is the contractor really in a 'zoned' area or just close by? The whole point of hazardous area classification is to identify the extent of such areas, so the correct equipment can be used/specified. Often zoned areas are much more than a few meters in dimensions.
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Ian Bell2		#3 Posted : 25 January 2016 13:32:46(UTC)
Rank: Super forum user		Often zoned areas AREN'T much more than a few meters in dimensions. Edit function required!!
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Ron Hunter		#4 Posted : 25 January 2016 15:26:58(UTC)
Rank: Super forum user		The onward march of technology! See: http://www.ipesearch.co....bj_id=676340&sid=166 What happens if you drop that tablet into a proper zone though?
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saferay		#5 Posted : 25 January 2016 15:51:22(UTC)
Rank: Forum user		Maybe you should be insisting on Zone 1 & 2 protected devices (link below) https://www.ecom-ex.co.u...g/tablets/tab-ex-series/ I shudder to think how much these cost (elf 'n' safety and all!)
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douglas.dick		#6 Posted : 25 January 2016 16:12:40(UTC)
Rank: Forum user		I checked out the cost of a case for my Iphone that is atex approved. Just £880 plus vat!
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Ian Bell2		#7 Posted : 25 January 2016 18:58:14(UTC)
Rank: Super forum user		ATEX rated equipment is only required if actually inside a hazardous classified area, that's the whole point in determining the extents of hazardous areas.
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bleve		#8 Posted : 25 January 2016 19:39:31(UTC)
Rank: Super forum user		Ian Bell2 wrote: ATEX rated equipment is only required if actually inside a hazardous classified area, that's the whole point in determining the extents of hazardous areas. What about overlapping zones? Blanket zoning, could cover entire room Presumably gas/vapour atmosphere. What zone 0, 1 or 2 and what is the gas group?
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bleve		#9 Posted : 25 January 2016 19:56:30(UTC)
Rank: Super forum user		Even assuming zone 2 and allowing for ignition by permissible single fault, the device is not compliant with Directive 1994/9 and so should not be used within a potentially explosive atmosphere. Furthermore, the risk of ignition should have been considered as a part of 13 potential ignition sources under Directive 1999/92 and using EN 1127 Regards
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Ian Bell2		#10 Posted : 25 January 2016 20:52:59(UTC)
Rank: Super forum user		BLEVE wrote: Ian Bell2 wrote: ATEX rated equipment is only required if actually inside a hazardous classified area, that's the whole point in determining the extents of hazardous areas. What about overlapping zones? Blanket zoning, could cover entire room Presumably gas/vapour atmosphere. What zone 0, 1 or 2 and what is the gas group? Both of your posts are correct - hence why I said check the extents of the hazardous areas. Blanket zoning is quite common, even though a location might not actually need zoning. What point were you trying to make?
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bleve		#11 Posted : 25 January 2016 22:29:59(UTC)
Rank: Super forum user		Simply replying to the OP based on extensive experience and expert opinion. Not trying to make any point at all. Thought it was clearly made tbh
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Ian Bell2		#12 Posted : 26 January 2016 00:14:22(UTC)
Rank: Super forum user		Ok
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