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Post by markhampyro on Apr 18, 2014 9:33:40 GMT -5
Fireworks and cell phones. So I recall during my display assistant course, Rachel said we shouldn't be using cell phones while setting up shows. I find it hard to imagine a cell phone creating enough energy to ignite a fuse. Any thoughts?  |
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Post by Lumadue on Apr 18, 2014 15:56:37 GMT -5
Which way do you not believe it will not ignite a fuse?
There's two possible ways that I know of, if you have an electric match, and it is not properly shunted, the extending wire can act as an antenna, which a frequency is possible to ignite the pyrotechnic.
The other is based on when people were assembling or manufacturing stars, the rolling of chemicals, there is a lot of friction, which in turn creates static. If you are not grounded, and there is a generation of energy from say a cellphone. It could possibly ignite.
These are just possibilities, not to say they will or will not. But why take that chance?
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Post by markhampyro on Apr 18, 2014 16:09:43 GMT -5
Which way do you not believe it will not ignite a fuse? There's two possible ways that I know of, if you have an electric match, and it is not properly shunted, the extending wire can act as an antenna, which a frequency is possible to ignite the pyrotechnic. The other is based on when people were assembling or manufacturing stars, the rolling of chemicals, there is a lot of friction, which in turn creates static. If you are not grounded, and there is a generation of energy from say a cellphone. It could possibly ignite. These are just possibilities, not to say they will or will not. But why take that chance? I guess so. Just can't imagine it I guess. Especially when just setting up a show. |
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Post by pyro on Apr 18, 2014 21:54:36 GMT -5
Its not enough wattage to ignite anything, the frequency is so high on the MHz spectrum that is why they are super low wattage. Remember the old brick phones, they had a large antenna which was for the 800 MHz spectrum and transmitted a higher wattage, that may have had some dangers but I hardly think it could ignite anything.
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Post by markhampyro on Apr 19, 2014 9:41:18 GMT -5
Although I have seen videos on YouTube about cell phones igniting while you are fillin up at a gas station. They even have signs posted up saying no cell phone use during a full up.
I think myth busters should look into this. Lol
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Post by Xplode on Apr 21, 2014 17:33:41 GMT -5
There were multiple reasons that Cellular phones were specifically mentioned during the course. First is the potential risk due to accidental ematch ignition. There is enough power there to possibly cause induction in a wire and set off a device. Its a worksafe rule/policy for industrial blasting, and we're not terribly different). Its incredibly unlikely, but its possible. I can personally add the idea that lithium batteries are a potential fire hazard from thermal runaway situations and any unexpected fire source is a dangerous situation on a shoot site.
The other, and more likely the reason its mentioned during training, is that it is a huuuuuuge distraction to those of us that are less focused. If you're mucking with your phone and you start forgetting steps (like checking a shell is properly seated at the bottom of a mortar, or double loading a mortar) then you can cause a dangerous situation for everyone. At the very least you'll probably screw up the show in some way, and that won't make you friends very quickly.
Cell phones are a fact of life now, but they should probably be left on the table or in the truck while you're setting up and loading.
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Post by markhampyro on Apr 21, 2014 22:19:22 GMT -5
There were multiple reasons that Cellular phones were specifically mentioned during the course. First is the potential risk due to accidental ematch ignition. There is enough power there to possibly cause induction in a wire and set off a device. Its a worksafe rule/policy for industrial blasting, and we're not terribly different). Its incredibly unlikely, but its possible. I can personally add the idea that lithium batteries are a potential fire hazard from thermal runaway situations and any unexpected fire source is a dangerous situation on a shoot site. The other, and more likely the reason its mentioned during training, is that it is a huuuuuuge distraction to those of us that are less focused. If you're mucking with your phone and you start forgetting steps (like checking a shell is properly seated at the bottom of a mortar, or double loading a mortar) then you can cause a dangerous situation for everyone. At the very least you'll probably screw up the show in some way, and that won't make you friends very quickly. Cell phones are a fact of life now, but they should probably be left on the table or in the truck while you're setting up and loading. Well said xplode. Didn't think of it that way. |
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gordon
Junior Pyro Member
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Post by gordon on Feb 6, 2015 0:39:19 GMT -5
I believe Mythbusters did look at the cellphone while fueling myth. The bigger danger is forgetting your cellphone in the car, starting to fuel, pausing and entering the vehicle to get you cellphone. That can generate enough static electricity to cause a spark that will ignite the gas fumes.
Getting back to a pyro situation, I noticed 2-way radios being used on a barge a couple of years ago. They tend to be much higher power than a cellphone, so I'd think they're a bigger risk when transmitting than a cellphone. (Personally, I had my cellphone powered off when I was on that barge shooting photos of the setup just to be safe.)
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Post by ndetravis on Apr 16, 2016 1:51:13 GMT -5
Although I have seen videos on YouTube about cell phones igniting while you are fillin up at a gas station. They even have signs posted up saying no cell phone use during a full up. I think myth busters should look into this. Lol Mythbuster did look at this with semi new phones can could not get gasoline to ignight. So I geuss it depends of the fire/flash point of the chemical your using... |
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Post by Aussie on Apr 18, 2016 14:04:16 GMT -5
it's stated in the display manual, if you deviate from the manual, your responsible for the outcome,
Your insurance may not cover accidents in this situation for that very reason.
I tell my shooters to leave them in the car,
Concentrate on the job at hand. When your on a break and not being distracted then by all means,
It happened once a worker was on the phone and texting, the ematched comet sequence I had designed was plugged in wrong,
That won't be happening again,
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jcpyro
Junior Pyro Member
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Post by jcpyro on Jul 30, 2016 19:27:17 GMT -5
I'm also into mid/high power rocketry - and cellphones are not permitted anywhere near the firing line. As a general rule they are a great distraction tool. But, no - there is no where near enough energy from the mobile phone to cause ignition.... This all changes when you are on a sat band transmitter phone. I've tested this out with 3 popular brands of Ignitors and those Sat phones can easily cause Ignitors to ignite through induction as they are microwave producers -
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Post by pyrotechsupply on Oct 23, 2016 18:11:20 GMT -5
The cell phone thing has to do with interference of radio signal, especially with remote firing systems and radio interference.
I know happened to me no thanks to forgetting to leave cell phone in truck or at home and was doing test of lines and guess what? call came in at the wrong damn second and boom off went some pyro to my surprise.
Leave phone at home or in vehicle far away especially if using wireless firing system, handheld radios will do same and it is all relative to distance from system and output of cell phone or handheld radio.
Have had this conversation with CF radio specialists and at the end of the day it does not matter how fancy of a firing system you think you own the wrong signal at the wrong time and / or too close of proximity will make your show come to life sooner then expected.
I never used to believe it could happen till it happened once to me and never again.
(Disclaimer: no humans or animals were hurt in the making of this) LOL
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Post by markhampyro on Nov 3, 2016 20:35:02 GMT -5
i guess it would depend on when the system is armed as well. The cell phone thing has to do with interference of radio signal, especially with remote firing systems and radio interference. I know happened to me no thanks to forgetting to leave cell phone in truck or at home and was doing test of lines and guess what? call came in at the wrong damn second and boom off went some pyro to my surprise. Leave phone at home or in vehicle far away especially if using wireless firing system, handheld radios will do same and it is all relative to distance from system and output of cell phone or handheld radio. Have had this conversation with CF radio specialists and at the end of the day it does not matter how fancy of a firing system you think you own the wrong signal at the wrong time and / or too close of proximity will make your show come to life sooner then expected. I never used to believe it could happen till it happened once to me and never again. (Disclaimer: no humans or animals were hurt in the making of this) LOL |
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Post by pyrotechsupply on Nov 4, 2016 7:06:10 GMT -5
i guess it would depend on when the system is armed as well. Yes you are 110% correct on that as I rudely found out. In my case I just flipped the switch from test to arm and bang.. (Did not hear the cell ph ringing from the firing) timing was freaking unbelievable on that one, the chance of that happening twice in a row is probably zero to none but the fact still remains it did happen and it could happen again to anyone. Had the same thing happen to a fellow Pyro Buddy on his finale he thought (Key words he thought) he left his phone in car flip switch boom ..awww $%@#^%#^!@^&*#^ Guess it;s time to re- do your show to fix that oopppsss That's why you see may more firing systems in the 2.4 GHz range now. Only problem is there is many other 2.4 Ghz things flying around and also wireless radios and wireless home phones etc so don't count on it wont happen to me or you could have a neat surprise one day. |
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