Mon, 29 Jul 2013|
Walt Lewis discusses some problems engine company crews many encounter with different types of nozzles while attacking a fire.
[BLANK_AUDIO] [MUSIC] Welcome to Fire Engineering's Training Minutes, I'm Walt Lewis. Today we're gonna talk about some problems you can have with your hose line,. Just before you get water on the fire. In this case here the hose line's been deployed, but very valuable that you know each of your pieces of equipment, especially your nozzles. In this case here, we've made our advance to the doorway. We check our hose line, make sure we've got the water we want and the nozzle set as we need it. Unfortunately during our crawl into the structure, it's not uncommon that the stream shape returns and changes pattern. In this case here it's very vital that we know what we have. For this nozzle we've got a flush feature. That flush feature can certainly create a different type of stream than what we want to be able to attack the fire with. Or some nozzles also have an Off feature at the end of the turn of the stream shaper. That will be a problem for us to determine. Us being at the nozzle, up at the front, a solid hard firm hose line, we knew we had water coming out of it when we entered the structure. Open up the nozzle and nothing comes out. By knowing our equipment, we realize that that's the problem and a quick change of the stream shape gets us the water on the fire that we need rather than a panic back outside. In this case we've deployed our hose line to the front door getting ready to make our fire tact and we've got a smooth boar nozzle on the end of the line this time. Like we showed. We got a good firm hoseline, good water pressure. We want to check our stream to make sure we got a good hoseline to use. Make our advance inside the structure. And once we get to the area of fighting fire, we open our nozzle and imagine that the veil is all the way open. But this is our stream that we get coming out. That's not going to be effective for us. So, we have to quickly decide what our problem is. We have a solid firm hose line, so we're getting water. We've got trouble if water coming out of the nozzle tip, so the problem exists here at the nozzle. One remedy is to spin off the nozzle, if it has a stream shaper in it, then it'll allow debris to get hung up right here. Causing your clog, right in your tip. Without the string shaper in place, the debris would flow straight through the nozzle, hopefully. But if the debris hung up in either location, a quick spinoff of the nozzle. Allow you to put some water on the fire. Rather than none. And if necessary, add the tip back to your nozzle if the clog has been freed. Now, you've got a good hose line to work with again, and you can advance. Again, with our hose line smooth born hose nozzle and we're advancing into the fire. We check our line, we got good pressure, and a good hose line, we start making our advance in. But after going in a little bit, taking a position, we suddenly run into a problem. As we open up on the fire, our hose line goes soft. We dont have good water coming out, it feels firm, so were getting water and the water nozzle slowing sign. Where is our problem? Somewhere behind us between the pump and here. We got to figure out what it is and do it quickly if we have to withdraw to safety do so, but a simple correction for the problem may be just popping the nozzle a couple of times to chase any [UNKNOWN] that we can get to and [UNKNOWN]. Now at the area of fire we open up our line poor water came out. So, quickly, we can pop our nozzle and what we had as a poor line to start with became a better line and now good water [SOUND] flows for us. Another situation. We've gotten to the front door, we check our water [SOUND]. Got a good hose line, we advance into the fire. Once we've gotten inside, we start fighting fire and our hose line goes dead. We shut the line, we're not getting any more water back, it's not a problem with our nozzle. It may be a problem with our hose, or our pump. We're not safe to stay inside, we've gotta get out. Can choose to leave the line on the ground, and follow it out in a hurry. Or, scurry back if you're close enough to the door. Once you get to the door, you can choose to pull the nozzle to you, however your department operates. But the best thing is you're safety. And now with that ruptured length, the heads up engineer on the outside realizing the problem, comes in with a set of hose, and quickly replaces the piece that broke. The officer and firefighter are withdrawing from the structure to an area of safety and they advise the engineer by radio to make this happen. The other situation is we've advanced our hose line, got it to the front door, again checking water. Got a good hose line, and we make our way inside. But sometimes there our equipment isn't in the best of conditions. Once we get inside. We work to open up the bail and it moves quickly and easily in our hands, but no water comes out. The hose line is firm, the nozzle is our problem. No water's coming out. Is it a clog? No. It's our bail. Our bail's separated from our ball valve from inside. Not a common circumstance, but we gotta be able to recognize it. Is this a situation we can stay inside and fix? No. We've got to withdraw get another hose line definitely another nozzle. Whatever the circumstances our safety's paramount we have to be able to quickly decide whether we can stay inside fix the problem quickly go to a safe area of refuge and handle it that way or go outside. Start over with another hose line will fix the problem all together. Some of the other problems we can encounter are at the pump, the hydrant, or beyond. But these are quick hose line problems we can encounter on the inside. I'm Walt Lewis, thanks for watching fire engineering's training minutes.