Morley-IAS Fire Detectors

Innovation in the fire protection industry can oftentimes be slow to move forward, particularly when compared to other similar industries. This is because legislation, regulation, and enforcement, while all necessary proponents within the sector, can often slow the tide of revolutionary ideas. However, the ability to innovate in this industry can quite literally be a matter of life and death. The developing intricacies of modern infrastructure and the demand for more sustainable solutions must also fuel the need for innovation. Fortunately, there are many companies at the forefront of technical and digital transformation within the industry. At the NFPA Conference in June 2019, much of the chatter revolved around Smart Connected Things (SCoT) within fire protection systems.  Smart Technology Smart Tech can offer more accurate, efficient inspections and testing, which on its own is capable of saving lives These systems are now being used by both building owners and service providers to determine fire protection system conditions as well as helping to perform some critical testing functions remotely - which of course has been invaluable in 2020. Smart Tech can offer more accurate, efficient inspections and testing, which on its own is capable of saving lives and protecting valuable property. For example, if a warehouse has been equipped with smart tech solutions to observe water pressure and flow rates within a building sprinkler system, users can have a real-time view of how much water has been flowing per minute. This means that should a fire break out in a particular part of the building the flow rate within the sprinkler can be routed to that specific area to put the blaze out as efficiently and as quickly as possible. Advanced Smoke Detection Fire protection brands have made huge leaps forward in their quest to develop smoke detectors which meet with the UL 268 Safety Standards for 2020. The new standard requires that all smoke alarms and detectors must meet two critical benchmarks: Increased responsiveness to the new polyurethane foam tests. Ability to distinguish the difference between smoke aerosols from accidental fire sources and smoke aerosols from cooking sources. Basically, domestic smoke detectors must be able to understand the difference between materials, based on the kinds of smoke they emit when they catch fire. Detectors must also distinguish between the smoke produced as a by-product of cooking, or a “nuisance” fire, and a real fire, which could pose a threat to human life. Smoke & Flame Video Detection The new alarms feature “TruSense Technology”, which is designed to be able to differentiate between fast and smoldering flames and common false alarms. These technologies were developed in the hope that homeowners wouldn’t just simply remove smoke alarms or batteries due to frequent false alarms. Video Image Smoke Detection technology has been around the industry for a few years now, but full video detection is now being used to supplement it, in order to further the applications of this technology. A video image will then be processed by the software that then concludes whether the clip contains smoke or flames This tech uses video-based analytical algorithms that integrate cameras into advanced flame and smoke detection solutions. A video image will then be processed by the software that then concludes whether the clip contains smoke or flames. The algorithms used to distinguish smoke and flames can utilize several different metrics, such as a change in brightness, contrast and movement. Water Mist Suppression Systems Depending on the kind of system in place, these recognition tools can even offer security and other surveillance features too. This technology is ideal in locations with large surface areas, such as power plants, stadiums, shopping centers and warehouses and distribution centers, where a fire may be particularly challenging to locate using traditional methods. Flame Video systems trace fire to its origin to make for quicker, more effective extinguishment and evacuation. A major concern for most businesses in any industry is sustainability. Water mist suppression systems are able to fight fires using significantly less water than a traditional system. The water is stored under extreme pressure and is released using specialized sprinklers and spray heads. This enables the water is able to reach a far larger surface area since the droplets are much smaller. Exit Point Technology A water mist suppression system is also designed to cool down an area where fire and smoke are present, by blocking radiant heat and eliminating oxygen from the origin point. These systems are often used in areas that see a lot of foot traffic or buildings where the possibility of water damage would be detrimental. All Fire Alarm Systems must include notification appliances, such as bells, horns and strobe lights. Technological advances use directional sound to help evacuees determine the pathway to the fire exits But the latest devices now provide verbal instruction on what to do in the event of a blaze and tell people where to go to the nearest exit. It’s highly likely that evacuation may be hampered by black smoke and smog in a real-life emergency. This obviously makes visibility limited, thereby possibly making exit signs challenging to see. The latest technological advances use directional sound to help evacuees to determine the location and the pathway to the fire exits. New Sealing Sprinkler Guidance The audible sound is specially adapted to the human ear, meaning that someone could easily determine the direction and sound. While the previous entries in this list have been about products, it’s also absolutely vital that fire safety regulations are also developed alongside these products. Not only does this ensure the protection of occupants within the building, but also the structure of the building itself. For example, The Ministry of Housing, Government & Local Government announced tweaks to the Approved Document B (Fire Safety) which went into effect last November and applied to building works that started this January. These updates apply to blocks of flats and mixed-use buildings with top floors that are more than eleven meters above ground level. The legislation change means that C-PVC sprinkler pipes now need to be sealed with only specialist and approved products. The height threshold for a sprinkler system in residential flat blocks has been reduced from 30 to 11 meters.

Since the Grenfell tower tragedy in 2017, residential high-rise fire safety has become a top priority for tower block building managers. If a high-rise building is found to contain combustible cladding, then the standard ‘stay put’ policy is no longer considered safe, and instead a temporary ‘simultaneous evacuation’ strategy must be put in place until the cladding issue is resolved. Currently a Waking Watch protocol is the preferred option for ensuring resident’s safety, in order to coordinate a simultaneous evacuation in the event of a fire. But, due to the extremely high cost of Waking Watch, Fire Detection & Alarm systems are being used to help reduce and, in some cases, remove these costs, which can amount to upwards of £100,000 per year. After the Grenfell fire, official figures showed that there are 300 towers with ‘Grenfell-style’ Aluminum Composite Material (ACM) cladding. However, there are many different types of high-risk flammable cladding used on purpose-built blocks of flats, such as timber, high-pressure laminate (HPL) and polystyrene cladding. With more and more unsafe buildings being assessed, the scale of this issue continues to grow. Currently a Waking Watch protocol is the preferred option for ensuring resident’s safety The UK Government announced in 2018 that it would pay for the removal and replacement of unsafe cladding in councils and housing associations. However, there is no legal position stating that private landlords should not pass the cost of this work onto tenants, and with the high costs of replacement, along with mounting Waking Watch costs, private landlords are known to pass this cost to tenants in service charges. Along with the cost of cladding replacement, landlords are also charging tenants for the cost of expensive Waking Watch services. Approved fire alarm systems are fast becoming the preferred safety system, due to the reduced overall costs, as well as the NFCC (National Fire Chiefs Council) recommending these over Waking Watch services. Fire safety regulations in high-rise buildings Following the Grenfell tragedy, the Government issued notice that all buildings over 18m had to be assessed for combustible material in their external walls. Following this, in January 2020, the government also issued Advice for Building Owners of Multi-story, Multi-occupied residential buildings stating that “building owners are to consider the risks of any external wall system and fire doors in their fire risk assessments, irrespective of the height of the building” immediately, until a Fire Safety Bill is put in place. Approved fire alarm systems are fast becoming the preferred safety system In order to assess the fire risk of external wall systems of residential apartment buildings an EWS1 assessment (External Wall Fire Review) must be completed. This risk assessment form provides a ‘safe’ or ‘unsafe’ certificate for the building, and must be completed by a competent fire expert. Not only does an ‘unsafe’ certificate affect the owner of the building, with the need for new fire safety solutions, it also directly affects tenants, with mortgage lenders refusing to lend on a apartment until they are satisfied that the facade is safe. Until the building has completed the assessment and been deemed safe, all dwellings within the building are valued at £0, and cannot be sold. 'Unsafe' certificates Buildings that have been awarded an ‘unsafe’ certificate through the EWS1 assessment will need to implement temporary fire safety measures while the cladding is being removed. The key purposes of this guidance, outlined by National Fire Chiefs Council (NFCC) in May 2018 and then reviewed in October 2020, are: early detection of a fire, warning of building occupants, and management of the evacuation. The measures state: In order to prevent tenants from being removed from their homes, ‘Stay Put’ must be temporarily replaced by a ‘Simultaneous Evacuation’ strategy until the building has been remediated. Temporary protection measures must be introduced to ensure the safety of residents; either a 24/7 Waking Watch or a common Fire Detection & Alarm system designed to BS5839 Part 1 category L5 specification. Fire safety solutions Waking Watch is the quickest and easiest way to fulfill the requirements from the NFCC guidance. This solution requires a trained fire marshal or warden to patrol the building 24/7 and alert residents in the case of a fire. They will also be responsible for carrying out the Simultaneous Evacuation strategy and assisting residents’ evacuation. While the Waking Watch solution works well as an immediate solution to fire safety, the mounting costs of this fix means that it is unsustainable in most situations, with tenants facing unaffordable increases to their monthly rent in order to cover the costs. For example, reports into Raphael House, near Essex, show how a five-person 24-hour patrol costs £50,000 per month. This cost is split between the 154 flats, resulting in average costs of more than £300 a month for each resident. Issues with Waking Watch In addition to the cost, there are other issues associated with Waking Watch, including: Patrols cannot cover all areas of the building at all times No fire detection system within the flats themselves Not a long term solution The alternative solution to fire safety in high-rise buildings, as per the NFCC guidance, is to install a Fire Detection & Alarm system designed to BS5839 Part 1 category L5 specification. Although the upfront cost of these systems tend to be higher than a Waking Watch initiative, the overall expenditure, given the cost and time it takes to replace the cladding, far exceeds the cost of a fire alarm system. NFCC compliant fire alarm systems An NFCC compliant fire alarm system ensures early detection of fire and alert to residents. The BS5839 Part 1 category L5 systems do not replace the mains wired smoke alarms required in each apartment, but instead are installed in the common areas of the building in order to provide additional cover for these communal areas. These fire systems should be: Designed in accordance with BS5839, Part 1, category L5 Heat detectors should be installed throughout the building next to the windows that overlook an area of the external wall, including within the dwellings. An immediate evacuation signal should be triggered by the operation of any single heat detector. Installation of a new common area fire alarm system should not cause any further damage to the compartmentation or have an adverse effect on other provisions in the building. Comparison (Waking Watch vs Fire Alarm Systems) Cost: The government has outlined the average cost of Waking Watch in England as £17,897 per building per month, with the hourly rate per person undertaking Waking Watch duties ranging from £12.00 to £30.00 per hour. A total of £644,292 over 3 years. Additional charges for equipment, facilities, accommodation and services can also be applied. A suitable fire alarm system is likely to cost around £65,000 over the course of 3 years, for installation and yearly recurring costs. This means, over this period, installing a fire alarm system will save a total of £579,292. Long term solution: While both Waking Watch and a Fire Alarm System are considered short term solutions, many fire alarm systems can be adapted for future use once the cladding issue has been resolved, providing suitable infrastructure is created at the design and installation stage. Alerting the whole building at once: A Fire Alarm System is a more time efficient solution to detecting a fire than Waking Watch. The system is able to alert the whole building at the same time, allowing for the simultaneous evacuation protocol to be followed in a more time efficient manner. The NFCC states in their Simultaneous Evacuation Guidance... “NFCC strongly recommends that where a change to a simultaneous evacuation is deemed appropriate and will be required for medium to long periods of time that a temporary common fire alarm system is installed. This is because a temporary common fire alarm, when designed, installed and maintained appropriately is a more reliable and cost-effective way to maintain a sufficient level of early detection. An appropriate communal fire alarm and detection system will generally provide more certainty that a fire will be detected and warned at the earliest opportunity rather than rely on using trained staff.” With many residential high-rise buildings needing additional protection due to flammable cladding, and the excessive cost of Waking Watch, now is the time to consider a Fire Alarm System to keep residents in high-rise buildings safe.

During these challenging times, it is more important than ever to protect the supply chain of food, including supermarkets and convenience stores in cities around the world. On average 3,740 fires occur in food and groceries stores in the US annually, including supermarkets and convenience stores, according to a report published by the NFPA (National Fire Protection Association). Structure fires in mercantile properties were responsible for the loss of 12 lives and more than $600 million indirect property damages, and this doesn’t account for the cost of business interruption and the effect on the reputation of the store. Many stores haven’t been able to recover after a fire. The report estimates that a single fire may cost $46,000 on average, which in hindsight is considerably higher than investing in a fire detection system. The most common causes of fire in supermarkets It’s important to look at the data from two different perspectives. The first is the number of fires by cause, and the other is to quantify the property loss by cause. The report estimates that a single fire may cost $46,000 on average Fires caused by cooking equipment , including stores with kitchens and warming and portable equipment, account for 21% of incidences, but only for just 7% of total property damage and four civilian deaths (firefighter and first responder deaths are registered on a different report). On the other hand, electrical distribution and lighting equipment malfunctions and defective wiring account for 15% of the total of fires in a given year, but caused $165 million in property loss, or 27% of the total recorded on the report. It is also important to mention that intentional fires are the third cause reported, accounting for 11% of the total fire incidences and 20% of the property loss highlighted in the report. Occupation, materials and risks The kind of store poses a significant variety of risks associated to the type of occupation, the number of occupants and the materials stored and available in the shopping areas. It’s possible to find combustible materials of diverse nature and propagation speed. Cardboard and paper wrapping can be found in all store areas, including book and magazine stands. Cleaning products, oils and fatty products might have a high propagation speed. All of this, surrounded by different kind of plastics, immensely increase the level of risk. Overall, combustible liquids caused 41% of the civilian deaths recorded during the report In my firefighting years I’ve responded to several fires in food supermarkets and distribution centers, and saw tuna cans (canned with oil) exploding and spreading flames to the surrounding areas. Regarding occupation, it is known that supermarkets and groceries stores are places with high levels of occupation, especially during working hours. But one interesting fact that the report found is that fires occurring between 9pm and 5am can cause, on average, $73,800 in property damage. The NFPA estimates that 21% of human life losses happened between 12am and 3am. This highlights the importance of installing and maintaining an automatic fire detection system. Installing fire detection And Protecting Your Store With the variety of materials and the risk level that can be found in this kind of environment, it’s necessary to take a holistic approach. Fire protection should be designed while considering several angles, from passive protection in all interior and exterior structures and cladding to active protection with sprinkler and clean agent systems, proper ventilation and smoke control and automatic fire detection and evacuation systems. On average 3,740 fires occur in food and groceries stores in the US annually Several detection technologies need to work in parallel, depending on the type of products stored, the environment and the expected level of occupation on the protected area. Store height and ventilation need to be taken into consideration and also the kind of lighting in some cases. Depending on the ceiling height, the shopping floor could be protected with beam smoke detectors. If the ceiling is below six meters, or the store shelves obstruct the beam, it’s possible to use spot type smoke detectors. The same approach can be taken for warehousing and storage areas, but here I would recommend multi-criteria detectors, with heat and smoke detection combined. localized protection As I’ve mentioned before, cooking areas have an increased level of risk, which calls for localized protection. Here, I would recommend multi-criteria (smoke/heat) detectors for areas where food is heated and served, and smoke/heat/Carbon monoxide detectors on cooking areas to avoid nuisance alarms caused by cooking smoke and steam. It’s important to mention that until this year it was possible to install heat detection in cooking areas, but the UL 268 7th edition that comes into effect in 2021 will require cooking areas to be protected with smoke detection, and smoke detectors have to be able to reject nuisance alarms caused by cooking smoke and steam. Smaller supermarkets and convenience stores usually have vertical freezers or horizontal open freezers. Here, electrical and mechanical failures can ignite fires, which is why it is important to protect the rear side of the freezers. I would recommend point-type smoke detectors, as photoelectric smoke detectors tend to perform better on smoldering fires. The report mentions that air conditioning equipment and electrical equipment can be sources of ignition as well. To protect A/C rooms and electrical rooms I would recommend combined smoke/heat detectors, or maybe even smoke/heat/CO to assure better detection and avoid unwanted alarms in these business critical areas. There is a type of photoelectric smoke detector that uses two different LED sources inside the smoke chamber. This technology, called Dual-Ray, allows the smoke detector to identify the particles inside the chamber by size. The detector knows if it is sensing dust or steam, and can even differentiate between cooking or cigarette smoke from actual smoke from a smoldering fire. Bosch Building Technologies first introduced dual Ray technology in 2015. protecting the food supply chain During these challenging times, it’s more important than ever to protect the food supply chain and avoid the social and economic impact of fires in food stores, especially in impoverished areas. Supermarkets and convenience stores present a variety of challenges regarding fire protection, which calls for a holistic approach where passive and active protection are equally important. To achieve this target, one key element is automatic fire detection. Smoke and heat sensing technologies must be combined, and one size-fits-all approach is not enough. Detection and effective evacuation are critical to protect lives and minimize property loss.

The next Fire Industry Manufacturers’ (FIM) Expo which will take place Wednesday 16th October, 2019. This time the FIM Expo will take place at Sheffield United Football Club. Organized by the Fire Industry Association (FIA), FIM Expo features many of the UK's pioneer fire detection and alarm manufacturers and focuses on showcasing the latest products and developments in this sector of the industry.A wide range of exhibitors are confirmed so far: Advanced Global Fire Equipment Ampac Haes Systems Apollo Hochiki Baldwin Boxall Kentec BAFE Lan Control Systems C-Tec Morley-IAS Eaton Nittan Eurotech SSAIB Everlux Sterling Safety Systems FFE Vimpex FirePro Xtralis Fire protection systems Fire protection systems The FIM Expo is for anyone working in this area, whether as an installer or maintainer of fire detection and alarm systems, a manager of such systems in commercial premises or as an architect or person specifying what type of fire protection systems should be installed in a building. The FIA will also be hosting two free, CPD accredited, seminars at the Expo. Both sessions will focus on key topics affecting FD&A world. Those interested can meet the Membership Manager and enquire about the benefits of FIA membership First session will start at 10am and Will Lloyd, Technical Manager at the FIA will present the ‘Overview of the Changes to: BS 5839-6:2019’. Second seminar will start right after lunch at 1pm and Ian Moore CEO of the Fire Industry Association will give an introduction to the Interim Report of the Industry Response Group following on from Dame Judith Hackitt’s post Grenfell Tower Review. Fire protection training and qualifications The Fire Industry Association will also have a stand, so that those interested can meet the Membership Manager and enquire about the benefits of FIA membership (which includes discounts on fire protection training and qualifications, and the possibility of a stand at FIM Expo).Chris Tilley, FIA Membership Manager comments that: “Competency and how you prove it is at the forefront of everyone’s mind right now, and if it’s not then it should be. At FIM Expo this October the FIA have invited BAFE and leading certification bodies to offer you a one stop shop solution. Come and visit us to get expert industry advice on how best to achieve competency for your company and engineers”. With an average of 25 exhibitors over the last few years, FIM Expo has grown to become the best local expo for the fire industry. FIM Expo is open from 08.30 to 15.30 on Wednesday 16th October and is free to attend. Parking and refreshments are also available free of charge, including a buffet.

Also, Honeywell D1 system and All-Spec air sampling device were installed at the zoo In 1930, George Mottershead bought Oakfield House in Chester, along with seven acres of land, for the grand total of £3,500. He then visited a zoo in Manchester and what he saw that day inspired him to create ‘a zoo without bars’. George opened Chester Zoo in 1931 with his family and a small group of animals, never forgetting the vow he made. By the time he died in 1978, aged 84, Mottershead’s dream of a ‘zoo without bars’ was well and truly flourishing. Fast forward to 2015 and with more than 12,500 animals in 125 acres of award-winning zoological gardens, Chester Zoo is one of the world’s top attractions of its kind. 1.4 million people visit every year and its mission is to be a major force in conserving biodiversity. The latest attraction is Chester Zoo’s Islands, which aims to transport visitors to the South East Asian islands of Panay, Papua, Bali, Sumba, Sumatra and Sulawesi. Work began on the £40m, 60,000m² development in 2013 and it has taken almost two years and thousands of working hours to build. The largest indoor zoo exhibit in UK history, Monsoon Forest is the centrepiece of the Islands and the second phase of the project to be completed. Islands gives visitors the chance to take a walk or boat ride past turtles, Sumatran tigers, cassowary birds and many other species, as well as through bamboo copses and rice paddies. It is also home to the Sundra gharial, one of the world’s largest crocodiles, whose habitat is cleverly set out so these remarkable creatures can be seen both above and under the water through spectacular glass viewing windows. An advanced PA/VA and fire detection solution Crown House Technologies (part of Laing O’Rourke) is the M&E contractor for the Islands project and sub-contracted Morecambe based Cook Fire & Security Ltd to provide the fire detection system for the Monsoon Forest. Joe Weiss, ‎Technical Director at Cook Fire & Security, states, “Over the last 14 years we have become one of the leading installers of state-of-the-art solutions throughout the north-west of England and beyond. We have been involved in some highly prestigious projects but the Monsoon Forest was a unique environment and required some significant thought about the best way to protect, staff, visitors and, of course, the animals.” A Honeywell D1 system allowed Cook Fire & Security to combine advanced audio management with a flexible architecture to deliver an advanced PA/VA solution at Monsoon Forest. Generally, this type of technology is utilised in public or larger buildings and, following the detection of smoke or fire, automated messages control the flow of people, allowing an orderly evacuation without panic. However – as animal welfare is at the very heart of Chester Zoo’s activities - one of the key priorities was to have a PA/VA system that could alert staff and visitors without causing distress to the creatures living there. Joe Weiss comments, “Obviously, the animals are used to the sound of human voices, so we felt that a PA/VA system would be more appropriate than the type of loud siren commonly used.” Monsoon Forest is entirely enclosed and with temperatures reaching highs of 80°F, this level of humidity meant that a great deal of consideration had to be given to the most suitable fire detection system. A solution based around the Morley-IAS ZX5SE control panel was installed in the keeper’s section, as it is intuitive to use and easy to install, network, configure, maintain and expand. The public areas, however, required a solution that could offer high levels of false alarm prevention while blending in with the tropical surroundings. An aspirating smoke detection system Explaining the thought process, Weiss says, “Due to the height of the roof, access for installation and maintenance of a conventional or addressable system would have been problematic. Also, the high levels of moisture would have also been a problem and could have triggered false alarms. Therefore, an aspirating smoke detection system was the most suitable option.” A Honeywell All-Spec system was chosen and Martyn Keenan, Business Manager (North West) for Morley-IAS says, “As a universal air sampling device for a broad range of applications, All-Spec makes it possible to achieve a cost effective solution in accordance with EN 54-20. This allows the devices to be used in areas where other smoke detectors and air sampling smoke detection systems are no longer suitable, such as Monsoon Forest. By putting water traps on all pipework going back to the control panels, an extra level of false alarm detection has been achieved.” A highly innovative way of installing the system was employed, as the pipework was fitted when the roof interior was on the ground and then hoisted into position. This eliminated the need for access equipment and ensures that the environment will not need to be disturbed during any planned maintenance. Aesthetics were also important and white plastic was used to ensure that the system blended into the overall appearance of the roof structure. Ian McIntosh, health & safety manager at the zoo at Chester Zoo is delighted with the fire detection system that has been installed, and concluded, “The response to Monsoon Forest since it opened has been terrific and it is now a key part of the Chester Zoo experience. However, we also value the role that technology plays in keeping our staff, visitors and animals safe, which is why having Honeywell fire detection technology installed by Cook Fire & Security gives us peace of mind.”

Security alert buttons have been installed at first-floor staff entrance along with a fire microphone The 1,000 pupils and staff at the 570-year-old City of London School – one of Britain’s most photographed educational establishments – are now protected by a Morley-IAS by Honeywell voice alarm system. Installed by Ardent Fire & Security in a major overhaul of voice alarm and public address technology, the school, which is on the Thames embankment near St Paul’s Cathedral, now has a highly customised system that provides safety cover throughout its prominent site. A highly-customised Honeywell voice alarm system Replacing the previous obsolete system, Ardent, a Morley-IAS distributor, installed the Honeywell D1 rack and amplifiers along with 32 new speakers and new alert buttons. The buttons can be pressed to trigger specific public address messages in locations such as the swimming pool area and playground, while announcements can be made from both the reception desk and the office of the head teacher’s personal assistant. In the event of an alert, one of 18 separate safety messages is issued over the system, each of which is tailored to the school’s particular requirements. This allows disruption to be kept to a minimum, without compromising safety. In addition, security alert buttons have been installed at the first-floor staff entrance along with a fire microphone for the use of emergency services. As well as installing new speakers to ensure coverage is provided throughout the school, Ardent also optimised the operation of the in situ public address speakers. With its origins in the reign of Henry V, the school occupies a prominent site close to the Millennium Bridge, making it possibly the most photographed school in the UK. An independent day school owned and governed by the City of London, its former old boys include Sir Walter Raleigh and long-serving 20th Century Prime Minister Herbert Asquith. Integrated existing fire protection system, Morley-IAS control panel, and PA system The work was completed in two-and-a-half weeks during the Easter holidays and followed Ardent’s successful upgrade of integration between the existing fire protection system, a recently installed Morley-IAS ZX5Se control panel and the public address system. “The D1 system has amazing software with incredible flexibility – meaning it could do all that the school required,” said Adam Sutherland, Ardent director. “Any other system would have required a huge amount of re-cabling, but the D1’s sensitivity means it can work superbly with the existing infrastructure.” Currently based in Chelmsford, Ardent Fire & Security has staff with long industry experience, providing a full range of fire system expertise including PA systems and large network panels.