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Networking in Extreme Conditions?
222 asks: "Mission: Create an intermediate distribution frame. Difficulty: A few feet away, industrial equipment will be generating roughly 2000 degree heat. Bonus: Keep the network switches inside the IDF from melting. Does anyone have experience in making IT work in such extreme conditions? Is there an enclosure in existence that can handle this type of abuse? This is essentially what I've been asked to accomplish, and now I'm asking my fellow readers for help: Can it be done?"
Cisco make some pretty hard-wearing equipment, but I'm not sure they make anything capable of withstanding 2000 degree heat. Perhaps you should be talking to a consultant that specialises in industrial and extreme condition networking instead of slashdot?
Global symbol "$deity" requires explicit package name at line 2. - If only $scripture started "use strict;"
Having worked on and in a networked environment for a 24-hour steel mill, I can predict that you'll have just as much trouble with interference as you will with heat. Assuming you overcome the heat issue, whatever's generating it will also be generating so much interference you'll be lucky to get 10mbits from a gigabit line.
Our solution was to use fiber for pretty much everything, to the point that we were using so much that it was simpler to use fiber for every tasks than mix in cat5.
Regarding the heat issue, if you're based as an IT specialist in an industrial environment, then you have to liase with the site engineers for this kind of task. It's outside of your experience/training/knowledge, so don't succumb to vanity and assume that you have the intelligence to pull through it unaided. Such a place will already have other heat and interference-sensitive equipment which has been installed by engineers on-site, and they'll be able to do the same for your equipment.
Expect a hefty price tag for installing a suitable thermal casing and ventilation system. Or after due consideration and consultation, if it can't feasibly be done then that's the end of the discussion.
OK I'll bite.
I work with industrial networks...
WTF do you want networking kit so close to such a heat soure?
The motors/sensors etc on the machinery (ie, your heat source) should fead back into PLC controalers which are *bombproof*.
Only then well away from the machinery do you fead the signals from your PLC, into a computer to network and process data. (Or better than this, a robust NI fieldpoint network module to network the data, and process the data well away from the factory floor.)
Putting network switches in such a harsh environment in taking the piss. I'm not saying it can't be done, but you need to look at how everybody else reliably does it, and think why you are trying to do it another way.
Oh and BTW, 2000 F = 1093 C Most of us use SI units :-)
Anyone quoted by a reporter knows how little they understand
Don't believe what you read is the truth.
The parent summed up the entire scenario for you perfectly.
:)
I trained as a mechanical engineer, and I work now in IT.
Once you get into an industrial environment, recognise you don't know what you are doing.
The site engineers should be quite happy for you to outline the locations and temperature range you need, and work out a solution to that problem. Be specific about the scope of your situation and don't try to solve the problem for them.
And if you have to, work back up the chain a bit and see if they have alternate paths to send the cable, maybe that will help... The fibre is possibly a necesity too. I'm finishing up an airport project ATM, and everything that is important that needs to travel distances goes by fibre.
Just remember, YOU'RE the clueless client now. Be clear and specific with exactly what you need achieved, and they should be able to help.
I agree with the FooHentai about fiber, you want that, don't even bother with cat 5. You also want to work with your plant electrician and draw on their experience dealing with heat.
You are also going to want some kind of shield to run in front of the enclosure, even if it's just a piece of metal that maintenance installs. That shield will get fairly got, so keep it a good foot or so from your equipment. This will also stop some of the interference that whatever equipment your working will put out.
Get a proper industrial enclosure to put your equipment in, and expect to pay heavily for it. You can also get ruggedized switches like the Cisco Catalyst 2955S-12 that are designed for extreme heat conditions to begin with. Do as much shielding as you can, it can make a big difference on how effective your equipment works.
My experience with plant engineers is that they've always got people coming around and messing with their setup. So, they'll appreciate it when you come to them and say right to their face "I'm out of my element here and I'm like your expertise".
Building interpersonal bridges has never hurt anybody's career (we'll except for those people who attented Duke Cunningham's luncheons, but that's a different story!)
Also like other posters said, more than likely they'll have a host of questions and potential problems (such as the whole places power systems are all DC) that you hadn't even thought about.
Yes Francis, the world has gone crazy.