Photo by Tony Greco.
小安东尼·罗威特（Anthony Rowett）
每个有效的霍斯线操作的核心是所用的渗透率的有效估计。估计霍斯线伸展运动要求公司官员确定渗水的适当长度，同时还允许50英尺的霍斯线在火区工作。尽管训练可以提高消防员正确估计所用的螺旋伸的能力，但没有消防员是完美的，并且会出现错误。
估计霍斯线伸展的错误很可能导致霍斯线要么比必要的时间更长，这可能会导致一堆凌乱的软管（通常称为“意大利面条”），也可能导致软管中不需要的扭结。尽管伸展可能太长是可能的，但消防人员可以伸展和前进一条短短且无法有效地到达火区的霍斯线。当面对不正确的可能性时，所有消防员都必须准备克服这些错误，尤其是在没有到达火灾区域的短螺旋延伸的情况下。
When a short hoseline stretch occurs, firefighters have two options: stretch and advance a second hoseline or extend the length of the initial hoseline. The former can be a resource depleting operation depending on the staffing that is available, while the latter can many times be performed in a more timely manner and requires less staffing than stretching and advancing a second hoseline.
当消防员试图通过延长初始霍斯线的长度而不是伸展和推进第二座霍斯线来克服短座管的伸展，可以在两个位置进行初始霍斯线的延伸：霍斯线的喷嘴末端或设备末端的末端霍斯线。很多时候，当面对需要延长霍斯线的长度时，消防员将使用软管夹在延长座管道的同时停止水流穿过霍斯线，或者设备操作员将完全关闭水管。延长所用的渗水长度时，设备泵面板。当使用软管夹延长霍斯线的长度时，可以在喷嘴端或霍斯线的设备端执行延伸。
To extend the length of a hoseline at the nozzle end using a hose clamp, firefighters should perform the following operation:
- 将软管夹涂在喷嘴后面的霍斯线上。
- 从托管中取出喷嘴。
- Connect the female coupling of the additional length/lengths of hoseline to the male coupling at the end of the initial hoseline.
- 将喷嘴连接到熔融末端的雄性耦合。
- 剥落螺旋线的额外长度/长度，以便它们可以有效地前进，而无需扭结。
- Remove the hose clamp.
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To extend the length of a hoseline at the apparatus end of a hoseline using a hose clamp, firefighters should perform the following operation:
- 将软管夹在从设备软管上拉出的最后一条长度的耦合后面的霍斯线。耦合将位于距离设备50英尺的地方。
- 断开雄性耦合的连接，从从设备软管上拉出的螺旋线的最后长度，从从设备软管中拉出的近极长的雌性偶联。
- Connect the female coupling on the additional length/lengths of hoseline to the male coupling of the last length of the hoseline pulled from the apparatus hosebed. Then connect the male coupling on the additional length/lengths of hoseline to the female coupling of the next-to-last length of the hoseline the was pulled from the apparatus hosebed.
- Flake out the additional length/lengths of hoseline so that they will advance effectively without kinks.
- Remove the hose clamp.
You can also extend the length of a hoseline by completely shutting down the hoseline at the apparatus pump panel. When the water flow through the hoseline is stopped by taking this measure, you can again extend the length of the hoseline at either the nozzle end or the apparatus end of the hoseline. To perform this action, do the following:
- Shut down the hoseline by closing the control valve at the apparatus pump panel that controls the discharge outlet to which the hoseline is connected.
- 断开喷嘴与霍斯线的连接。
- Connect the female coupling of the additional length/lengths of hoseline to the male coupling at the end of the initial hoseline.
- 将喷嘴连接到熔融末端的雄性耦合。
- Flake out the additional length/lengths of hoseline so that they will advance effectively without kinks.
- 通过打开控制阀面板的控制阀来控制渗水连接到的排放出口。
为了通过关闭设备泵面板的霍斯线的延长渗水端的霍斯线长度，消防员应执行以下操作：
- 通过关闭控制渗水连接到的排放插座的控制阀，关闭所用的螺旋线。
- 断开雌性耦合在连接到设备排出插座的渗水长度上的连接。
- Connect the female coupling on the additional length/lengths of hoseline to the apparatus discharge outlet and the male coupling on the additional length/lengths of hoseline to the female coupling on the last length of the hoseline that was pulled from the apparatus hosebed.
- 剥离螺旋线的额外长度/长度，以便它们可以有效地前进而无需扭结。
- 通过在设备泵面板上打开控制阀来充电螺旋线；这控制了连接渗水的排放插座。
延伸渗透到渗水端的预连接融合的长度的操作可能与非接近连接的霍斯线不同，因为设备排放出口的位置连接到了融合的设备排放出口的位置。在非接近连接的螺旋线的情况下，螺旋线连接到设备侧面或后部易于接近的设备排放出口。
前连接的螺旋线通常连接到设备软管内部的设备排放插座，仅通过站在软管床上设备顶部的消防员才能进入。由于这些排放插座通常位于设备软管内部，因此在设备末端延伸预连接霍斯线的长度的操作对于非预先连接的霍斯线的不同。为了将预连接的霍斯线的长度延长到从泵板上关闭霍斯线的设备末端的设备软管内部的排放插座，消防员应执行以下操作：
- Shut down the hoseline by closing the control valve at the apparatus pump panel that controls the discharge outlet to which the hoseline is connected.
- 断开连接the male coupling on the last length of the preconnected hoseline pulled from the apparatus hosebed from the female coupling of the next-to-last length of the preconnected hoseline pulled from the apparatus hosebed; this connection is located 50 feet away from the apparatus.
- 将霍斯线的额外长度/长度的女性耦合连接到从设备软管上拉出的前连接霍斯线的最后一长度的雄性耦合，并将霍斯线的额外长度/长度与雌性耦合的雄性耦合- 从设备软管中拉出的预连接霍斯线的lAST长度。
- 剥离螺旋线的额外长度/长度，因此它们将在没有扭结的情况下有效前进。
- 通过打开控制阀面板的控制阀来控制渗水连接到的排放出口。
Stay tuned for Part 2, which will be posted tomorrow, August 22.
小安东尼·罗威特（Anthony Rowett）是移动（AL）消防部门的船长。他以前是奥格登斯堡（NJ）消防局的消防员。Rowett拥有新泽西州莫里斯县学院的消防科学技术副学士学位，并分别获得了哥伦比亚南部大学的消防科学和紧急服务管理学士学位和硕士学位。
