Control room arc flash - Page 1
Forum section: electronics / general

author: Homer J Simpson
author_rank: Super Contributor
timestamp: September 04, 2016, 12:42:16 am
content: you kind of see it coming..............

author: SeanB
author_rank: Super Contributor
timestamp: September 04, 2016, 08:21:06 am
content: Hope the operator was not too badly injured there, he definitely left fast enough.

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 04, 2016, 02:31:56 pm
content: Reckon whether the one at the end of this survived?

author: Gyro
author_rank: Super Contributor
timestamp: September 04, 2016, 03:51:17 pm
content: Those arc flash videos always make me cringe.. not knowing when and whether some poor sod is about to get his flesh burned off in millisecondsSome of the investigation reports are truly horrific.The remotely operated outdoor switchgear arcs and failures I could watch all day though!

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 04, 2016, 11:35:29 pm
content: What about this where some F***TARD firefighter sprayed water on a live powerline near someones house! Damn lucky it didn't arc down the stream and electrocute his ass!I hope he bacame a firedfighter.#fireidiots to prevent accidents.

author: Halcyon
author_rank: Unknown
timestamp: September 05, 2016, 05:33:57 am
content: Quote from: Cyberdragon on September 04, 2016, 11:35:29 pmWhat that fire fighter did is actually a legitimate method for using plain water to put out electrical fires which our fire services are trained in. It essentially involves "pulsating" the stream of water combined with a fog pattern. It's quite safe when done properly. I probably wouldn't have kept the stream on as long as he did however. Years ago I did this exact training (along with putting out fires involving LPG gas cylinders).The end of a fire hose (known as a 'branch') actually has a set of rotating "teeth" which breaks water up into distinct droplets (unlike a garden hose).

author: XOIIO
author_rank: Super Contributor
timestamp: September 05, 2016, 05:49:45 am
content: Holy crap that is the worst timing in the world, I do hope he's ok, definitely some burns though, and for some reason my twisted mind just put this together with the flash gordon theme like so:https://youtu.be/kwZqiC70L2AGuess it's a bit less painful with some music to go with it.I do love videos of power lines and stuff going up, generally you don't see someone getting hurt and they are pretty.

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 05, 2016, 03:42:37 pm
content: Quote from: Halcyon on September 05, 2016, 05:33:57 amWith the power still on?!Here you are not supposed to spray directly at the lines until the power is off!"Use caution when spraying water on or around energized electrical equipment. Hose streams conduct current! Never spray directly into the power lines. Use a fog spray at the base of the pole. Your primary responsibility is to protect the surrounding area. Short bursts of water are preferred methods to avoid being grounded. Never spray water onto electrical equipment until a utility rep has confirmed that the equipment is de-energized or “dead.”"

author: Halcyon
author_rank: Unknown
timestamp: September 06, 2016, 08:39:49 pm
content: Quote from: Cyberdragon on September 05, 2016, 03:42:37 pmYep -- Sometimes you don't have the luxury of waiting for the power company to rock up and confirm everything is off. All cables are treated as live. As you said "use caution". We are talking about domestic poles and wires here. Specialised HV gear in a switch yard or substation is a different story, let it burn until a subject matter expert can confirm is safe and even then you'll probably find a CO2 appliance deployed to the scene.

author: CM800
author_rank: Frequent Contributor
timestamp: September 06, 2016, 09:42:31 pm
content: 20 minutes ago at CM800 Labs:

author: XOIIO
author_rank: Super Contributor
timestamp: September 07, 2016, 12:01:20 am
content: Quote from: CM800 on September 06, 2016, 09:42:31 pmCool but I don't see how it was an accident.