Heat Detectors

2020 introduced a variety of unique challenges for many industries around the world. Not surprisingly, the fire detection industry was not immune to all of those challenges. However, as much of the global community defined our manufacturing and installing peers as “essential” or “critical” it required us, as an industry, to adapt so we could continue to service our customers with our products and services. Many regions around the world are experiencing significant demand for temporary detection systems. This demand is almost universally driven by an increase in education, awareness, and enforcement. While this is a global shift, our company has experienced a large demand in our own backyard. Within the United States, this is being driven by the adoption and enforcement of NFPA 241. NFPA is the Standard for Safeguarding Construction, Alteration, and Demolition Operations. NFPA 241 has been a “concept” since 1930 and the official text was finally adopted by the NFPA in 1933. As with all standards, it has progressed over the years to accommodate changes in technology as well as safety awareness. Fire safety awareness While general safety awareness on construction sites has always been consistently high, fire safety awareness has significantly increased within the last 5 years. Nuisance alarms negatively consume first responder bandwidth Typically, new, or increased regulation within our industry occurs after a single devastating event or several significant events. In this particular case, it was a combination of both. On a national level, fires on construction sites were reaching dangerous and unacceptable levels and becoming so widespread that enforcement of this standard became a priority in several states. Need for accurate and timely fire detection According to a report released by Richard Campbell of the NFPA in February of 2020 titled Fire In Structures under Construction or Renovation, “the estimated number of fires in structures under construction has increased since 2014 after declining between 2008 and 2010” further creating awareness. For the last few years, the focus of many local AHJ’s (authority having jurisdiction) was on new and active worksites or renovation projects. With the changes imposed by the COVID-19 pandemic today, many non-essential industries have either shut down or had their operations significantly reduced. This means the need for a functioning detection system is more critical now than ever as many facilities remain idle or continue to operate with reduced personnel. Detecting fires quickly and accurately gives our first responders the best chance of saving a person or facility. Conversely, having any “detection system” is often not good enough. Nuisance alarms negatively consume first responder bandwidth, possibly removing an engine or fire company from a genuine event. Temporary fire detection In an article by The Boston Globe, Easthampton Fire Chief David Mottor, president of the Fire Chiefs Association of Massachusetts said “Ninety percent of these buildings go up every day and nothing happens. It’s during construction before the sprinkler system is activated when they are most dangerous.” Globally, we have seen four approaches to temporary detection for both construction and renovation sites. We will quickly discuss the advantages and disadvantages below: Using 24/7 fire watch Utilizing local first responders or other authorized/trained personnel to offer 24/7 fire watch requires a person or team of people to be onsite 24 hours a day, 7 days a week to be physically looking for fires. Advantage: Someone is always on site, actively viewing and patrolling the facility. Disadvantage: Maintaining a 24/7 fire watch can be expensive, further the person or team can only see/find fires in proximity to them as they continue to move about a facility. Using digital linear heat detection Digital linear heat detection is a fixed temperature detector that is constructed using a twisted pair of metal conductors that are separated by a heat sensitive polymer. When the ambient temperature meets or exceeds the detector’s fixed temperature the polymers melt, and the detector shorts out resulting in an alarm. Advantages: Detector can be easily installed at a new construction site or a facility being renovated. The technology is a low profile, non-intrusive and cost-effective form of detection. This automatic initiating device is immune to environmental conditions. Protectowire FireSystems offers Confirmed Temperature Initiation technology (mechanical damage does not cause a false alarm). Disadvantages: Detector can be mechanically damaged during normal worksite operation. If you are unsure, be sure to check with the local AHJ or call your insurance provider Using wireless spot detectors There are a few companies on the market that offer wireless spot detectors that can be networked together. Advantage: Typically, this technology uses a mesh network of detectors. The detectors and their bases are battery operated and can be moved or placed per worksite requirements. Disadvantage: This technology can be expensive. Physical barriers on the construction site may hinder mesh network operation requiring the purchase of additional wireless units. Many wireless technology providers focus on smoke detection. Smoke detectors are often not ideal for the harsh environments associated with construction (dust, temperature changes, etc.). Using a hybrid approach This involves using wireless nodes to supervise linear heat detection. Most manufacturers of the wireless systems offer a wireless node that can accept a third-party initiating device. Advantage: Wireless nodes can be placed anywhere, and linear heat detection technology can withstand the harsh construction environment. Disadvantage: Wireless node battery life can be reduced when using a third-party device. Less cost-effective approach. Solution for Facilities While each of the approaches listed above has its own advantages and disadvantages, you must always consider what is best for your facility. If you are unsure, be sure to check with the local AHJ or call your insurance provider. Established in 1938, Protectowire FireSystems is the global manufacturer of Linear Heat Detection Systems. The Company has been manufacturing in the United States for the past 80 years and counting. Protectowire is dedicated to delivering products designed, engineered, manufactured, and tested with a high degree of performance, reliability, and quality. As one of the manufacturers in the fire protection industry, Protectowire has the experience and knowledge needed to meet the ever-increasing detection challenges of the special hazard and commercial industries.

New government legislation due to come into force in the United Kingdom on July 1st will require electrical installations in privately rented properties to be tested and inspected at least once every 5 years. The Electrical Safety Standards in the Private Rented Sector Regulations (2020) will require landlords to enlist qualified electricians to complete inspections and provide certification to tenants – or face fines of up to £30,000. While the risk of fire can never be entirely eliminated, the new legislation will introduce higher levels of safety and ensure that one of the primary causes of fire – electrical malfunctions – is regularly tested for. There are a number of procedures and regulations in place for when a fire has already started, but this new law will help to reduce the chances of it getting to that point. After all, prevention is the best form of protection. No safety procedure or response plan will ever fully prepare someone for the reality of a fire. However, a comprehensive prevention strategy and use of the latest technologies to quickly detect and respond to a fire can at least reduce the potential risk to both life and property. Defensive detection A fire can spring from many sources. Current standards do a good job of ensuring properties are well equipped to defend against fires created by overcurrent caused by overloads and short circuits. A comprehensive prevention strategy and use of the latest technologies to quickly detect and respond to a fire can at least reduce potential risk However, electrical fires can also result from mistakes made during the installation process, namely loose cabling or aging circuits that will not be detected by overcurrent protection. Indeed, a defective or worn insulation is the cause of 14% of all electrical fires in buildings. The danger of landlords only performing the bare minimum to protect their buildings is that, should a fire start from a source they haven’t accounted for, the loss and disruption to property could be devastating. For maximum protection, individuals need reliable, innovative products that excel beyond the minimum standards to prevent a fire from starting in the first place. The pending legislation will add to this safety from the start. It will require landlords to use qualified electricians when installing, repairing and maintaining systems, benefitting both landlords and tenants by mitigating electrical issues and instilling greater confidence. Protection against insulation faults The risk of cable insulation faults grows over time and the consequences can be severe. Low-intensity arc faults are more likely to occur in humid, dusty environments, causing injury and deadly fires if precautions aren’t taken. Protection against insulation faults within cables can be assured by residual current devices (RCD), which are triggered by earth leakage currents exceeding 300mA. For maximum protection, individuals need reliable, innovative products that excel beyond the minimum standards to prevent a fire from starting Additionally, final circuits in critical locations (as recommended in IEC 60364), should be protected by an arc fault detection device (AFDD). This is a circuit breaker that automatically cuts off the electricity supply when it detects an arc fault in the circuit. By immediately stopping the supply, AFDDs stop arc faults from reaching temperatures where fires can break out. As well as ensuring that private tenants feel more safe and secure, the new legislation represents an opportunity for electricians to secure more work and develop their skills. Going forward, as the demand for electricians in the private rented sector rises, we expect to see greater opportunity for electrical engineers to win long running contracts with landlords and property managers. Fire may be a risk, but it is not unavoidable. This new legislation promises greater peace of mind for private tenants by ensuring that electrical standards are met and hazards reduced. With expert knowledge and the correct approach to electrical fire prevention, a fire can be extinguished before any damage is done.

Over the last decade, fire protection has been transformed by the rise of addressable, IP-based devices embedded in networked fire alarm system infrastructure. The scalability and modular architecture of digital fire alarm systems has unlocked a new level of fire safety, for instance by pinpointing the exact location of a triggered smoke detector in an alarm, or by interfacing with public address systems for phased building evacuations. For system integrators, installation and maintenance of alarm systems have reached new levels of efficiency – including automated service alerts and far fewer false alarms – with unprecedented cost savings. Accordingly, the world market for fire alarm systems has seen significant growth, driven by the digitization of existing systems to meet higher safety standards and legislation. Experts at Grand View Research expect the market to increase from $52.2 billion in 2016 to $93.5 billion by 2022. Addressable systems – including IP-networked smoke detectors and fire panels – already account for more than two-thirds of the alarm technologies segment. And, as analog systems are being phased out, their share will soon be 100 percent. Networked fire alarm systems With that said, all elements are in place for the second, even more fundamental transformation in fire protection: In the near future, a growing amount of networked fire alarm systems will be connected to the Internet of Things (IoT). In the near future, a growing amount of networked fire alarm systems will be connected to the IoTThis is part of a larger trend across industries, including smart homes and smart buildings automated by a mixture of sensor data and artificial intelligence (AI). The number of IoT-connected devices worldwide is expected to exceed 14 billion by 2022, more than half of the world’s 28.5 billion connected devices. For technology providers like Bosch, the IoT’s level of networked intelligence calls for a strategic response. “Our strategic target for all of our electronic product categories is to be IoT-enabled by 2020,” said Volkmar Denner, CEO of Bosch. This vision is supported by “3S’s” in Bosch’s connectivity business: sensors, software, and services. In developing and implementing services and solutions for the connected world, Bosch benefits from its expertise in software and sensor technology as well as, in particular, its broad business portfolio. Remote Services lead the way When it comes to bringing the IoT into the fire safety segment, Bosch envisions a future in which connected devices – and their data – open up new kinds of services that offer significant benefits to end customers and system integrators. This digital transformation journey is already well underway, as IoT-based applications are already enhancing the fire safety service offering on several levels. As a prerequisite, networked system architecture such as fire panels and sensors need to connect to the internet via nodes, hubs, and gateways in a secure manner. With this connection in place, the system can communicate with a cloud application server via IP protocol to send real-time data such as device health, battery status, and event history. Networked system architecture such as fire panels and sensors need to connect to the internet via nodes, hubs, and gateways in a secure manner Because system integrators can access these data points from any location without physically visiting the installation on-site, the impact of the IoT so far has been most pronounced in the Remote Services segment with the following three focus areas: Remote Connect. Allows for the remote set-up of a system and programming to customer specifications. Offers cost savings, as set-up can be handled practically without leaving the office for each new installation. Requests for changes can also be implemented at faster turnaround. Remote Alert. In case of fire, the system sends an alert via the remote portal, which can be integrated with messaging systems. Integrators also receive alerts for device outages and malfunctions. Remote Maintenance. The system performs regular health checks and condition monitoring, sent at user-specified intervals. Smart fire detectors also ping administrators for electromagnetic pollution or contamination with dust. Major efficiency gains for system integrators While IoT-based Remote Services already provide major efficiency gains for system integrators, we’re only just scratching the surface of what is possible. At the same time, the foundation for next-generation IoT-connected services is already created today, as the integration between sensors, software, and services increases.It will not only be crucial for devices to work together within the same network In the process of building end-to-end fire safety systems that are ready to connect with the IoT, seamless interfaces with third-party apps and platforms via APIs (Application Programming Interfaces) will be a competitive advantage for system technology providers. It will not only be crucial for devices to work together within the same network. It will be even more important that systems can communicate with apps or building management software. On the same note, the ability to provide integrated, IoT-connected services on a secure backbone – safe from hackers and malicious attacks – will be indispensable, because system data is the most valuable resource moving forward. Analyzed correctly, this data holds the key to what comes next.         Smart data instead of Big Data Needless to say, the rise of IoT-connected fire alarm systems will create massive amounts of data. This new ‘Big Data’ reality will call for improved data processing capabilities. Not just in terms of quantity: The most relevant services will be derived from smart data provided by IoT solutions in fire safety. The focus lies with data points that matter and making this data actionable by practice-oriented analysis. For a quick glimpse into the process, our IoT data scientists are currently running comparative analyses of several fire alarm systems to gain visibility on problematic incidents, for instance when devices trigger false alarms. New services will have the potential to transform the way in which fire alarm systems are maintainedIn the next step, categorizing all systems that report such incidents into clusters would allow to give system integrators a big picture overview pinpointing exactly those among their managed systems that are at risk and need inspection, repairs, or upgrades. On the technical level, Bosch is using Mongo DB, a universal, document-based database for apps, to perform these quantitative analyses, always with a focus on new services and benefits for customers. As our understanding of this data increases, new services will become possible that have the potential to transform the way in which fire alarm systems are maintained and managed. Whereas today, system integrators can view data points such as device status in their Remote Portal and offer basic maintenance support via cloud-connected apps, tomorrow their service approach will be much more proactive, again thanks to smart data. The next level of IoT-powered services In the future, data from IoT-connected systems can be leveraged to predict automatically at what exact point in time a system component is going to fail. Instead of replacing said component ahead of time, as is the case in today’s preventive maintenance approach, this new predictive service protocol allows to save cost by making maximum usage of the device’s lifespan.This new predictive service protocol allows to save cost by making maximum usage of the device’s lifespan In the bigger picture, the data log of a particular fire alarm installation’s data can provide the basis for targeted system optimization efforts. For instance, if long-term data indicates that sensors in a particular area tend to trigger false alarms because of signal interference, the integrators can perform a deep dive into whether nearby high-voltage cabling is the cause and make adjustments to system architecture accordingly. In the same vein, integrators gain transparency on whether detectors in a certain location tend to need replacement due to dust and contamination, or if electromagnetic compatibility (EMC) with other systems like voice broadcast is causing issues – and take preventative measures. Self-monitoring Fire alarm systems Overall, these data points, together with constant real-time information on system health, will provide system administrators with the tools for planning and maintaining fire alarm systems in a more efficient manner. They can design and install new systems based on the data-powered learnings from previous installations. And they can provide a more customer-centric response to information requests or inquiries for system updates. Most of all, the connection to IoT-based services will provide a new peace of mind: These upgraded fire alarm systems will quietly monitor and secure themselves, and only trigger alarms or notifications when service is needed, while system integrators can focus on more important tasks. Right now, we are building the foundation for making these new IoT-driven services a reality. But compared to what the IoT has is store for the future design of fire alarm systems in buildings, we have only seen the beginning. The biggest benefits are still to come.