拉伸大线路

Article and photos by David DeStefano

人是习惯的动物。我们开发一个设备e that is familiar and comfortable and repeat that routine many times. These routines also occur on the fireground and are repeated and reinforced daily because they achieve the desired result. Most of our fires are manageable interior attacks in which the fire is usually knocked down using a 1¾-inch handline. The majority of our fires occur in residential occupancies that are either single-family dwellings or compartmented multidwellings.

您的下一个警报可能会瞬间打破这种例程的舒适感!实际上,美国每个消防部门都保护需要更高的火灾流动的占领,包括更大的覆盖范围和渗透对于成功的交火至关重要的情况。确定必须延长2½英寸攻击线的占领和火灾条件是第一引擎官员将做出的最重要的决定之一。

Conditions for Deployment

许多消防部门都有明确的程序或准则,要遵循拉伸2½英寸攻击线,通常称为“大线”。这些情况可能包括在商业建筑,高层或地窖中发生火灾,以及结构或防御性火灾攻击中的大型开放区域。伸展大线路的其他考虑因素可能包括存在火灾状况,但无法确定火的范围,以及到达时发生严重的火灾状况的任何火灾。

(1)在干燥或充电的线上施加带有管状织带环的围挂钩将有助于消防员将线路伸展到位。

拉伸线路

以前的每种情况都会有利于2½人手的每分钟覆盖范围,渗透率和大型加仑(GPM)。但是,部署大线路的主要缺点包括在运营和推动如此强大的溪流中涉及的困难。此外,如果要在任何有价值的时间长度上运行该线路,则必须确定可靠的连续供水。

To address the water supply concerns, guidelines may be adopted where companies are able to stretch their big line to a point that is tenable before a water supply is established and the line is charged. This will be subject to local policy as well as the location of the fire and the type of building involved. With many fire companies short-staffed, deploying and operating a big line may be a real challenge in many departments. Preplanning options for getting a 2½-inch line into operation is a must to conduct an effective fire attack.

运营少于四名消防员的发动机公司运营的消防部门可能会考虑制定一项政策,其中包括将两台发动机的人员组合起来,以促进并在结构中运行一条很大的线路。初始发动机公司的成员可以从钻机上拉伸线路。然后,在附加引擎的成员中补充,可以为大型线路充电,在火上推动并发挥最大优势。

在过去的日子里,发动机公司每个成员的口袋里都有一条软管表带。如今,对于一块管状织带来说,也可以这样说。在使用2½英寸线路时,可以将这种带有水弯曲的循环绑成一个循环。围绕线条周围的围绕围绕的环路可用于固定在窗户中伸展的软管,以及创建一条肩带的皮带,以拉开线或降低压力。

(2) The webbing loop will also make it easier to advance a line down a corridor or up a stairway.

作为室内攻击的一部分,操作和推进一条大线始终是一项艰巨的任务,但是成员将从较大的软管的覆盖范围,穿透和敲低功率中受益。关键是通过尺寸上升并将您的资源与任务相匹配来识别适当的应用程序。

大卫·德斯塔诺(David Destefano)is a 20-year veteran of the North Providence (RI) Fire Department, where he serves as a lieutenant in Ladder Co. 1. He previously served as a lieutenant in Engine 3 and was a firefighter in Ladder 1. He teaches a variety of topics for the Rhode Island Fire Academy. He can be reached atdmd2334@cox.net

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