DELANO (CA)- 在加利福尼亚州惩教和康复部（CDCR）的指导下，美国最大的北联邦惩教系统，克尔谷州监狱现在正在加入越来越多的惩戒设施，以实施吸气烟雾检测技术来进行火灾保护。
Specified by the CDCR in the bidding process, aspirating smoke detection systems draw in air through small flexible tubing secured in air ducts. The air is analyzed continuously for the presence of minute smoke particles in a remote area up to 300’ away that is inaccessible to inmates
This advanced technology not only provides faster, more sophisticated smoke detection, but also eliminates several costly and troublesome operational issues associated with traditional in-duct smoke detectors.
In-duct smoke detectors are prone to accumulate dirt and dust, particularly in inmate housing areas. Because the particulate can be mistakenly interpreted as smoke, it can trigger recurring false alarms. To resolve this, costly ongoing maintenance is required to access and clean each detector, a process that must be repeated when the build-up occurs again.
In some prisons, the problem is so severe nuisance alarms are ignored, even disconnected. In others, maintenance can become backlogged, leaving inmates effectively unprotected except for the vigilance of guards.
“在传统的管道烟雾探测系统中，当累积的灰尘和污垢覆盖传感器时，可能会触发大量的错误警报，”南加州智能消防系统与解决方案公司的联合创始人皇后冈萨雷斯说。基于消防和生命安全解决方案公司。她的公司赢得了涉及烟雾探测的克恩谷州监狱项目的竞争公众竞标。
At Kern Valley State Prison, a Level IV facility in Delano, California, Gonzalez says the fire safety project entailed replacing cell exhaust duct mounted smoke detectors with an advanced aspirating smoke detection system in an inmate housing unit. The scope of this involved about 16 pods, with about 64 cells per pod, for a total of nearly 1024 cells.
The aspirating smoke detection equipment chosen for the project was the VESDA-E VEA fire alarm system manufactured by Xtralis. The company is a global provider of early detection and remote visual verification of fire, gas and perimeter threats.
通过位于管道或返回空气追逐的柔性管采集的空气样品被运输，然后在300'内的中央单元中使用基于复杂的激光技术进行分析。单个VEA系统最多支持40个样品点，如果需要，可以将其扩展到120。
As a multi-channel, addressable system, the VEA central unit can pinpoint the exact location of the alarm. This can enhance safety by speeding detection, investigation, fire suppression, security management, and evacuation if necessary.
Furthermore, the VEA system offers earlier detection than photoelectric technology detectors. The system is able to detect minor particles in the air much faster, even before a fire begins to flame and burn.
的职业ject, 32 of the central units were used. These were located in a secure mechanical space behind the prison cells.
根据冈萨雷斯（Gonzalez）的说法，这是一个相对简单的安装。除去每个现有的烟雾探测器后，连接到空气采样点的管道取代了它。这涉及在所有单元格上运行返回空气追逐中的管道。悬挂在钩子上的管道掉入了每个管道。
Another benefit of the system is that it can effectively deter inmate tampering, says Gonzalez.
冈萨雷斯说：“如果有一种方法可以让囚犯篡改烟雾探测器，他们会。”囚犯甚至可以阻止管道，因此烟囱烟雾探测器将无法工作。安装的任何系统都必须尽可能防篡改。”
To deter vandalism, the system will send a fault signal indicating the air flow is blocked in the event an inmate is able to cover a duct or sampling point.
冈萨雷斯补充说：“即使囚犯可以看到空气采样点，他们也不知道这是什么，因为它是如此小，看起来不像标准烟雾探测器。”
校正行业领导者还赞赏抽吸烟雾检测系统所需的非常低的维护。
例如，VEA的吸气管是自动清洁，并检测管道中的任何堵塞或断裂。即使污垢，灰尘或棉绒进入管系统，所有采样点的过滤器都位于限制区域的中央单元。清洁过滤器只需大约一分钟，因此不需要维护人员爬进管道以清洁探测器。
该系统不仅由于传感器的灰尘或污染污染而停止错误警报，而且可以区分烟雾，火和其他空气传播污染物，从而进一步减少了滋扰警报。
Annual National Fire Protection Association (NFPA) inspections are also simplified. Unlike traditional smoke alarms, systems like the VEA do not require testing of each sample point annually at its location in the duct. Instead, the tests can be conducted at the central unit.
Whether correctional facilities aim to minimize false alarms and maintenance or improve safety and security, aspirating smoke detection systems are gaining favor over traditional systems.
Kern Valley State Prison joins Corcoran State Prison in California as well as Fort Dodge Correctional Facility in Iowa and Pennsylvania Correctional Facility in adopting aspirating smoke detection.
Gonzalez, who is currently bidding on another aspirating smoke detection project for a prison in Arizona, concludes, “There is increasing interest in this technology, and it will only grow as more correctional facilities, engineers, and architects become aware of its benefits.”
有关更多信息，请联系Xtralis：
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Web: www.xtralis.com/vea.
