Added: Tyler Stiver - Date: 18.10.2021 09:57 - Views: 29835 - Clicks: 3502
Anthony Rowett Jr. Every hoseline operation has a target flow rate. The target flow rate is the water flow rate of the fire stream that has been deemed adequate to extinguish the amount of fire that is present. Every aspect of the hoseline operation plays a vital role in ensuring that the target flow rate is achieved and the fire is extinguished, including kink management. Up to 30 percent of the flow rate of the fire stream can be lost due to a single kink in the attack hoseline.
Photo by Willie Cirone During every hoseline operation, there should be an asment for kink management. Every firefighter has been taught to chase kinks and to ensure that there are no kinks in either the supply hoseline or the attack hoseline. The question is how many of those firefighters actually understand the impact that kinks can have on a hoseline operation? Are firefighters simply managing kinks because that is what they have always been told to do or do they understand the true impact that kinks can have on the hoseline operation and the flow rate of the fire stream?
Every firefighter, especially those ased to engine companies, should know that kink management is an important aspect of the hoseline operation, and they should ensure that kink management is performed during every hoseline operation. It is also important for firefighters to understand why they are performing this function.
A firefighter is much more effective when they know both what to do as well as why they are doing it and the impact that the task will have on the entire operation. How much of an impact can a single kink really have on the hoseline operation and the flow rate of the fire stream?
The old rule of thumb is that up to 30 percent of the flow rate can be lost due to a single kink in the attack hoseline. While this is a good rule of thumb, it is important that all firefighters perform actual flow tests to determine the exact effect of kinks in the hoselines used by their department. There are many different models of hoselines available and they will all react a little differently to kinks.
Firefighters must understand that any reduction to the flow rate, let alone a 30 percent reduction, can and likely will render the entire operation a failure. This means that the correct hoseline and nozzle can be selected, the hoseline stretch can be estimated correctly, the fire attack team can stretch and advance the hoseline effectively, and upon reaching the fire area, the proper fire attack tactics and techniques can be performed, but the operation can and likely will still fail simply because a kink was allowed to exist in the attack hoseline.
Even though the fire attack team may still be able to extinguish the fire after recognizing the problem and asing a firefighter to remove any kinks in the hoseline, the operation is still a failure because the operation was not performed as effectively and efficiently as it is supposed to be performed. Time was wasted, allowing the fire to cause additional damage.
Firefighters must take the time to know and understand their equipment as well as the capabilities and limitations of that same equipment. All flows determined using flow meter. Flow rates rounded to nearest 10, and percentage of flow rate lost rounded to nearest . During training firefighters should demonstrate the impact that a single kink or multiple kinks can have on the hoseline operation to reinforce the importance of kink management.
During some experimenting, we were able to determine the impact that kinks would have on our hoseline operations. A pressure gauge was positioned at the nozzle, and a flow meter was positioned inline in the hoseline. The impact of a single kink in the hoseline and two kinks in the hoseline were measured. Each kink was created to be degrees. Some of the were inline with the rule of thumb that a single kink in the hoseline can reduce the flow rate by up to 30 percent.
The hoseline with a single kink in it experienced up to approximately 28 percent reduction in the flow rate of the fire stream when the flow rate was reduced from gpm to approximately gpm. The hoseline with two kinks in it experienced up to an approximately 46 percent reduction when the flow rate was reduced from gpm to approximately 80 gpm.
The effects of the kinks varied when different models of hoselines were used as well as newer vs. The good thing about kinks is that while they are a limitation of a hoseline operation, they are manageable. By ensuring that kink management is ased to a crewmember during every hoseline operation, kinks can be eliminated. It is inexcusable to allow a kink to reduce the flow rate of the fire stream simply because a kink was not managed and was allowed to remain in the hoseline.
Because kinks can have such a drastic negative impact on hoseline operations, it is imperative that kink management is emphasized during every hoseline operation, whether it be during a fire response or during a training evolution. Kink management must be emphasized during training to ensure that it is performed effectively during firefighting operations. The impact of kinks Up to 30 percent of the flow rate of the fire stream can be lost due to a single kink in the attack hoseline.
In sum The good thing about kinks is that while they are a limitation of a hoseline operation, they are manageable. Up. Video: Crowd Blocks, Jumps on CA Apparatus at Intersection Described as a "sideshow incident," a large group of people surrounded Turlock firefighters aboard their apparatus and pulled off a section of hoseline.
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Snap-tite Hose. Car Runs over, Bursts Parts of Hoseline at MD Fire Around 50 firefighters had to deal with a disrupted water supply after a car ran over a hoseline at the scene of an Anne Arundel County fire involving a barn and two sheds. Video: FDNY Breaks Windows of Car Blocking Hydrant Raw video from a fire scene in upper Manhattan last week shows how firefighters needed to smash the windows of a car parked in front of a hydrant to run a supply line.
Watch How IL Firefighters Handle Calls in Arctic Conditions Decatur firefighters are careful with their equipment—and their footing—as they battle fires during heavy snowfall and brutal wind chill factors. Officials Probe Hose Rupture That Injured IA Firefighters Two Cedar Rapids firefighters who suffered fractures when a hoseline ruptured have been released from a hospital while officials investigate what happened.Fire kink
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The Importance of Kink Management