你知道你的仪表怎么样？第2部分

经过

Photo found onWikimedia Commons.礼貌曾经是斯里洛森

凯文yoos.

In“How Well Do You Know Your Meters? Part 1”我解释了一些局面的地方carbon monoxide (CO)当我们最初收到响应分配时，警报结果比我们首先想到的更多。计量已成为消防员的一个组成部分;关于我们回应的每一个运行都涉及某种类型的Hazmat情况。普通的火焰释放比你想象的更多危险的化学品和气体。本文将讨论这些CO响应。

对于一些消防员来说，CO报警响应是每日滋扰，因为占用者不知道实际之间的差异警报activation and malfunction and a low battery chirp. In many municipalities, these detectors are required by law or the homeowner has installed them for safety, but most fail to read the operation manual to see how the detector works or alarms. This causes the local fire department to respond and investigate the situation and advise the occupants. Depending on the manufacturer or model, some of these detectors are only good for five to seven years, and then they must be replaced. Anytime you respond to a CO alarm, check the manufacturer date on the back of the detector and advise the occupant of all your findings.

So, what is CO? It is a flammable气体这是有毒（有毒），无色，无臭，无味，并且在室温下比空气略微轻。CO易燃为12.5％，等于每百万百万分之125,000（PPM） - 您的设备上大多数仪表将检测到，但是您需要了解某些东西。在68°F，CO比在1.0处的空气相比，CO比空气略微轻。它具有几乎相同的值，并且在结构中无处不在。请记住，任何温度变化都会快速改变其密度。所以，当你使用一个袜子来射出火灾时，你将冷却该地区;该公司将越来越重，沉入低洼地区。在处理气体时始终思考温度;它将帮助您确定可能导致问题的区域。

在一个住宅环境，阈值我们认为任何读数以上9 ppm以上作为紧急情况（某些成员只是使用10 ppm和Up）。住宅居住被认为是持续的占用;换句话说，有人每天可以在结构24小时。这就是我们使用10 ppm作为紧急阈值的原因。在商业建筑中，建议的阈值是35 ppm。因此，商业占用率的工人可以在每天40小时的工作周内每天工作高达10小时，每天35 ppm。如果您有高架CO读数，请始终尝试确定问题的来源，关闭系统，并确保所有乘员都意识到潜在的危险。

大多数探测器您最有可能遇到电池或插件式。一种住宅可能的组合/一氧化碳探测器或separat抽烟吗e smoke and CO detectors. If you are unsure which detector is sounding, you can usually tell by the number of beeps. If you hear four beeps, a pause, and then another four beeps, that is the CO alarm activating. If you hear three beeps, a pause, then three more beeps, that is the smoke detector activating. If you hear three chirps every minute, that usually means there is some kind of malfunction and as we all know, the occasional one short chirp a minute usually is the low battery alarm. Also, when the detector reaches the end of its life span, the detector will chirp five times every minute. You may find a slight variation of this, but you should know the difference between the beeps and chirps.

Firefighters using CO metering devices for investigations should also be aware of cross sensitivities of other gases in the environment that will show a positive or negative CO reading on your meter. You may have come across this situation before and didn’t even realize this was happening. Have you ever had a回复在哪里无法创造与乘客叫的相同情况？你曾经去过CO反应，无法弄清楚为什么你的CO米向你展示你有一读吗？你有没有在你的co meter上读过负面的阅读？这太过频繁，有时你可以拿起不同的不同气体。对于其他传感器也是如此;不仅仅是有限公司。

例如，在我的消防器中，其中一个二楼CO探测器开始激活。我们开始在我们的设备上使用仪表进行调查，并检查了消防站的所有区域。我们的CO米正在阅读45 ppm仪器floor and 38 ppm on the second floor. As we checked the areas that have gas appliances (the kitchen and basement), we noticed that the readings began dropping to zero. We thought it may have been from the apparatus exhaust, but after ventilating the readings increased again. After investigating and contacting our hazmat unit, we determined that an acetylene cylinder from our torch was leaking. As it turned out, acetylene is cross sensitive with the CO sensor in our meter. When researching the operations manual, Acetylene has a cross sensitive value of 1 for 1 with CO.

We also responded to an incident for an unusual odor in a private屋。当我们用我们的单身煤气表调查时，我们注意到我们在住宅中获得了积极的共同读物，并且在地下室有一种腐烂的鸡蛋。使用额外的MultiGAS计调查超过一小时的时间，我们确定了基底泄漏泵的备用电源电池过热并放弃硫化氢（H.2s），这给了我们在CO和H上的读物2S传感器。我也有事件是我们的Multigas仪表同时在多个传感器上读数，这结果也是交叉敏感性。

Recently I heard about an incident where the Fire Department of New York (FDNY) was investigating a CO alarm activation in a supermarket basement and was getting readings of approximately 140 to 160 ppm of CO. They requested a hazmat response; and my squad company as well as Hazmat 1 responded to investigate. After shutting down the gas burner, appliances, and ventilation, the FDNY was still getting these same readings. Companies continued to investigate when they noticed a gas odor and positive readings from a sewer in front of the building. They later determined that the natural gas pipe was leaking under the street, and the gas was seeping through theconcretewalls in the basement, scrubbing out the methyl mercaptan odorant and that was giving the false CO readings, although not enough to give a lower explosive limit reading.

大多数消防员都没有意识到米有交叉敏感性。您的部门使用的任何计量设备都有一个操作手册，应该列出交叉敏感的气体;您也可以在线研究。消防员应该意识到他们在米上可能看到的阅读可能不是那种特定的气体，应该使用警告at all times. Using more than one meter, multigas meters, and other types of metering technology may address some of these issues.

正如您所见，没有响应是例行，并且你永远不应该让你的警卫响应任何响应。消防员应始终使用完整的个人防护设备，并且应在调查任何反应时准备使用它们的独立呼吸器。你永远不知道你可能会发生什么，你需要在任何时候保护自己和你的消防员。

KEVIN YOOS是一个19年的老兵与纽约消防部门（FDNY）和一名分配给Queens 270队的中尉。他一直在过去15年的FDNY特殊运营指挥（SOC），并且在布朗克斯中的前部分配包括小队61，梯子17和发动机50。他曾担任长岛Setauket（纽约）消防局部门的两次，目前是Setauket Fire District的专员，并一直是一个积极的firefighter和过去26年的官员。他是一个全国认证的Fire InstructorII and is a Deputy Chief Instructor at the Suffolk County Fire学院。他教了许多程序，包括Hazmat，technical rescue和FDNY的船上消防，并指示纽约188金博网网址多少国家部门的技术救援计划家land Security和紧急服务。他可以达到yoos270@gmail.com。

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