Tue, 25 Oct 2011|
Leigh Hollins demonstrates some liquefied petroleum gas (LPG) training props used for training firefighters.
Hello this is Lee Hollands with Cederamic Fire Rescue Mantee County we're doing various training minute videos on realistic training props. And I would just like to bring to your attention that these particular scenarios we're doing are non instructional scenarios this is not for instructional purposes it's to show how you can use these various props. Is what it's all about. So we try to be realistic but we have some brand new recruits that we're using for this particular segment and we have some experienced people also and we have some experienced officers but we don't anyone to try to pick apart the actual tactics that are used. It is just to show how these props can be used in various ways, OK. So, we just wanted to bring that to your attention. Thank you. [MUSIC] [MUSIC] Hello, this is Battalion Chief Leigh Hollins with Cedar Hammock Fire Rescue. We're at the emergency services training facility in Manatee County Florida and we're gonna be looking at various LPG training props that have been constructed, they've been on site here about ten years. Just wanna note that we're not gonna be getting into tactics and strategy of dealing with LPG gas or, any low pressure, vessels that we have out here. This is just to show the training props and how they can be used in a training situation. I just wanna make sure everyone understands that there's various standards and ordinances and fire marshal rules and regulations that deal with these type of installations. If you had to construct this type of a training prop you want to make sure you follow the NFPA guidelines that will make it as safe as possible. You'd also want to contact your state fire marshall's office and make sure that you're following any of their rules and regulations that deal with this type of training prop. Not only in constructing the prop, but in valving and safety issues, triple hazards water supplies, things like this. And then you also want to make sure that you're following any rules and regulations in your jurisdiction or your state dealing with the tactical part of it when you actually have firefighters and officers out here, doing the evolutions. For instance in Florida, we have the live fire training instructors, and we have the live fire training adjunct instructors that are certified by the state of Florida, and you need to have a certain number of those people to run an evolution here, so, with that said, I just wanna make sure that everyone's aware of that. We're gonna be just lighting these props up and taking a look at the various. A valving and so forth, and a little description of what we have here. We're not going to be getting into the tactics of strategy, so thanks for watching Fire Engineering's Training Minute videos. Okay, with this particular prop, what we have here is simulating an underground gas line that has ignited, and this is about as realistic as it gets. The prop that we have here, just on the other side there's an underground valve where crews can approach this, possibly, with a couple of hose lines and an instructor in the middle. And they could push this fire away from that valving. And go ahead and secure that valve. Out in the streets, of course in real life situations, which do occur from time to time. Underground gas line igniting, the gas company would be involved and this may need to be controlled. From up stream, of course there's always a chance that the gas system may be feed from both ways so you may have a loop system. So the gas company may need to control this from valving that's remote. Of course the key with this is that you don't wanna put the fire out, because if you put the fire out. You're gonna have a tremendous gas leak here to deal with and it's just gonna be looking for an ignition source. So, this type of a problem would be a situation where you would have to determine all these things before hand and, and there are situations. And in the street where such a a tank or underground line it's safer to have this thing ignite it than not ignite it. So it would be a decision on what would need to happen if this was put out. But again, this is a realistic prop, indicating about 60 pounds of pressure on a one inch pipe that's ruptured and ignited from some type of a ignition source. Okay, this particular prop is a mock up of a low pressure horizontal. Fuel storage tank. The idea here is that there would be fuel underneath the tank on fire, impinging on the tank, and that there would be some type of a vent out the top that would also ignite as that oil or diesel or whatever type of Combustible material is in that tank as that heats up and, It starts vaporizing. So, what this prop would do would be simulate that situation. And, normally, we would have crews come in. And, they would. Try to sweep the fire out from underneath this particular prop, as you can see it's not right on the ground, but it's it's, it's, its pretty good, prop, that, that simulates that and there's some valving underneath that they could go for which isn't real realistic. So, it's basically to sweep that fire out from underneath that tank or, we also use this as a defensive position where we would set up a master stream that would be flowing at least 600 gallons a minute onto this tank to keep this tank cool until that fuel underneath the tank burned off. So there are several different scenarios you can do with this. Another scenario with this prop is you can use it without fire. You can fill it with water. Simulate any type of a hazardous material spill. On the other end of this tank there's a placard that you could put the different placards for combustible liquid. Flammable liquid, corrosive liquids, so forth. So, it's a, it's a prop that can be used in, in various fashions. But the main reason for this prop is to simulate a fuel fire underneath this tank, where crews have to sweep that out of the way so that it's not impinging on this tank. So, this is a low pressure [NOISE] Fuel storage tank prop. Okay, this particular prop we have is a residential gas meter. This would typically be natural gas, and, as you see, we have a ruptured line here that has ignited, and in this particular scenario. We could do a couple things here. We could, see if there's a valve that we can get to. Eh, protect the fire fighter with a hose stream. Which there is, in this case, just to the right of that meter. Where, where that, riser comes up into the meter. There's a valve there. However. As we indicated earlier, looking at the underground gas line, the key is you do not want to extinguish the fire in case you can't control the gas. So, if, if, if that wasn't an option, then we would, Of course, protect exposures and we wait for the gas company to shut this flow off remotely. Which of course we all know that this would be a problem if that meter's up against a commercial or a residential occupancy, that fire's most likely gonna be, blowing up into the soffit or whatever and you're going to have some problems here, so. If you can get to that valve and secure that valve that would certainly be the number one priority. So this is the residential gas meter, of course, a commercial gas meter would just be a larger fire and a larger meter, larger piping but same problems that you would have. Tactically and strategically. 'Kay this high-pressure LPG tank prop, again very realistic. What this is simulating is that the cluster valve at the top has had some type of a rupture, and it found an ignition source. This particular one of course, is venting straight up, which is good. And probably tactically, as long as it's looking the way it's looking right there. This would be a situation where we'd probably cool that tank with some lines. And let this fuel burn itself out. What you would have with this situation, if the fire was impinging on the tank. Would be to have a relief valve firing off and we'll show that next along with the cluster valve. These fires, from my experiences, typically happen when someone's filling a forklift and drives off with the hose attached, or something in that nature. You may have two or three of these tanks side by side where one might be impinging on the other. But this is your cluster valve on top of a high pressure LPG tank. Okay well the only difference here, you can see, is that the relief valve has fired off. This relief valve in real life wouldn't be sticking out of the tank like that. It would be down on that tank in that cluster area. And this particular situation would be, it would just be be cooling that tank and trying to get the temperature of that tank lowered down so that pressure relief valve resets and stops flowing the gas out of it. Also realistic and you can probably hear the whistling sound of that relief valve. I've personally been on fires very similar to this that it actually sounded like a jet engine and it was very loud. It was no mistaking it. And this is just something that would need to. Have that tank cool down so that that valve would reset itself and probably be a burn off at that point. I've been on these situations also where crews had to go in and ignite the flame again, where they were extinguished by accident with the hose line. Due to a location and the wind direction back in a industrial plant. So very realistic prop. One thing to consider with all these LPG props and in real life, in the daytime, with the sun out, bright day. You're not going to see these flames like this. Those flames are going to be almost invisible. So, that needs to be taken into consideration when you're responding to any type of a gas leak that, it may be ignited and you're not, not seeing the flames. You'll see the, the heat coming off, the heat. Vapors but something to consider on the streets. This is Leigh Hollands. Thanks for watching Training Minute videos by Fire Engineering magazine.