Det-Tronics FIRE SUPPRESSION SYSTEM ACCESSORIES(7)
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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 fire industry has made it absolutely clear, led by authorized bodies including the BAFE Fire Safety Register, that the current pandemic does not remove the need to comply with any fire safety requirements under the Building Regulations. As we now look beyond the lockdown period, John Allam, Operations Director at Amthal Fire and Security reviews the raft of new proposals demonstrating the Government and industry’s commitment to compliant fire safety and new immediate demands placed on responsible persons. Multi-Occupancy residential buildings Whilst the second phase of the Grenfell Tower Inquiry has been put on hold until July at the earliest over coronavirus restrictions, the government has continued its quest to effect change and bring the Fire Safety Bill and Building Safety Bill into legislation. While the Building Safety Bill will ‘place new and enhanced regulatory regimes for building safety and construction products’, both bills aim to strengthen the ‘whole regulatory system’ for both building and fire safety. The Fire Safety Bill will apply to England and Wales, to amend the Fire Safety Order 2005 and seeks to clarify responsibility for reducing fire risk in multi-occupancy residential buildings. The details of the Fire Safety Bill, which has now had its second reading in the House of Commons, includes recommendations of regular inspections of lifts and sprinkler systems for buildings over 11m tall. Quarterly fire door inspections Building owners will now face ‘enforcement action’ from emergency services if they do not manage fire risk Significantly, it also introduces compulsory quarterly fire door inspections, which is a hugely significant development in its own right, to influence an industry where this is no specific legislation that requires fire doors to be checked. The Fire Safety Bill intends to ensure evacuation plans are reviewed, regularly updated and communicated to residents in a ‘form that they can be reasonably be expected to understand.’ And it highlights the importance of individual flat entrance doors, where the external walls of the building have unsafe cladding, comply with current standards. This will play a key part in increasing residents’ fire safety, whereby building owners will now face ‘enforcement action’ from emergency services if they do not manage fire risk in a building’s structure. Improving the fire safety of buildings In addition, the government is consulting with the National Fire Chiefs Council to begin testing evacuation alert systems for high-rise blocks of flats, which could support fire and rescue services’ operational response by alerting residents if they need to escape. The National Fire Chiefs Council to begin testing evacuation alert systems for high-rise blocks of flats The new program will be governed by a Building Safety Regulator (BSR) that will initially be led by Dame Judith Hackitt during the set up phase, who will be tasked with improving the fire safety of buildings. Launched by The RT Hon Robert Jenrick MP Secretary Of State for Housing, Communities and Local Government, he cited the new program as taking, “Ambitious steps to further reform the building safety system with the biggest changes in a generation to ensure residents are safe in their homes.” He added: “This new regime will put residents’ safety at its heart, and follows the announcement of the unprecedented £1 billion fund for removing unsafe cladding from high-rise buildings in the budget.” Major regulatory decisions The BSR will be responsible for all major regulatory decisions made at key points during design, construction, occupation and refurbishment of buildings. And such decisions and obligations must be upheld and maintained throughout a development’s life. The new safety case regime will apply not only to new buildings, but also to buildings that are already in use" In Dame Judith’s own words: “When introduced by the new regulator, the new safety case regime will apply not only to new buildings, but also to buildings that are already in use and occupied. If those buildings were built to poor standards in the past, it will not be the case that you can simply say ‘well it complied with building regulations at the time’. The test will be different. The test will be ‘is this building safe to be occupied?’ and, if not, what are you going to do to improve it?’ … People will be asked to think about what they can do, what is reasonable and what is practicable to do in order to improve the safety of a given building.” Regulating the fire safety industry Both Hackitt and the Government want the BSR to be set up in shadow form before the Building Safety Bill becomes law. The plan is to put the bill before Parliament by the autumn, despite the challenges thrown by the Pandemic. The new legislation proposed by Government will undoubtedly ensure that buildings and those that live and work in them are maintained to be fire safe. In the words of BAFE CEO Stephen Adams: “The time is right to help better regulate the fire safety industry to change end user behavior and create a UK that's safer from the devastating effects of fire.” As BAFE further attests, as lockdown measures begin to be lifted, there will be a need for the competent maintenance of fire safety systems/provisions and fire risk assessment work. Fire doors and risk assessments Amthal is working closely with building owners and managers across the UK to deliver the benefits of safer environment This means for those who own or manage residential buildings, will soon be ‘held into account’ if they do not ensure fire safety in their buildings, and the requirements will impact further on costs and resource allocation, for investigating buildings and ensuring compliance. There is a definite sense to be proactive in acceptance of the new impending legislation. But the concern cited amongst building owners is the industry’s ability to undertake the volume of assessments required, given the lack of current lack of specific legislation on specific elements such as fire doors and risk assessments, together with the steep expectations for fire strategy and evacuation plans. Amthal is working closely with building owners and managers across the UK to deliver the benefits of safer environment within a holistic fire safety approach. Working in partnership, means taking the time to understand the implications of the Government’s Fire Safety Bill, alongside the implications of the Building Safety Bill and BSR program. This way, we can ensure responsible persons confidently achieve all operational requirements for the ultimate benefit of residents’ peace of mind.
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.
AAR MRO Services supports airline operators with everything from maintenance inspections and equipment upgrades to airframe painting and heavy maintenance for all major aircraft in service. The largest MRO operator of its type in the Americas, AAR recently opened the company’s largest facility, located at the Chicago Rockford International Airport. Here, each of two 10-story hangar bays can accommodate hundreds of ‘small’ aircraft, two Boeing 787s or even an Airbus A380, the largest commercial aircraft in production today. Also in each of the two bays are 10 Det-Tronics optical flame detectors that function as the critical sensors for the AAR hangar’s fire protection system. Heavy Maintenance Inspections Aircraft spend anywhere from three days to two months in AAR’s hangars Russel Daubert, AAR Rockford’s Facility Manager, and Chris Wolf, Director of Maintenance, have overseen the 24-hour operations at the MRO hangar since it opened in late 2016. AAR serves multiple airline customers, and like any MRO facility, Wolf says their goal is to “get lines that are current, which means an airline operator will continually bring in one plane after another to keep their fleet operating safely.” Daubert adds, “The biggest portion of our work is airframe overhauls and heavy maintenance inspections, and depending on the aircraft, we can have up to 225 aircraft in each hangar at one time plus 50 to 60 crew.” Aircraft spend anywhere from three days to two months in AAR’s hangars. Fire protection in MRO hangars must be able to handle the challenges associated with servicing aircraft. Conventionally Constructed Fire Hangars According to Wolf, aircraft bring inherent fire hazards to MRO facilities. “These aircraft come in with 70,000 to 80,000 pounds of fuel,” Wolf says. “Add the oxygen tanks on board for passenger and crew safety, plus the possible sparks from electrical equipment or other sources, and you have all the ingredients needed for fire.” Maintenance also involves painting aircraft in the hangars, which can result in the circulation of highly flammable paint plumes under and around wings and fuselage. Hangars in these groups usually require both sprinklers and foam for fire protection Fire protection standards specific to aircraft hangars are spelled out in the National Fire Protection Association’s NFPA® 409 Standard on Aircraft Hangars. This document classifies hangars by size and construction type; conventionally constructed fire hangars with fire areas of 40,000 sq. ft. or less are classified in Groups I, II and III. Hangars in these groups usually require both sprinklers and foam for fire protection. High Expansion Foam Suppression System AAR’s Rockford facility is unique both for its immense size and for its construction method, a fabric tension membrane over steel trusses. The 2-inch thick insulated material meets NFPA 701 and ASTM E-84 standards for flame retardancy, fire safety advantages that led the NFPA to decide hangars covered in this fabric would fall in a Group IV classification. Group IV hangars can have an unlimited fire area and need only a low- or high expansion foam suppression system. One of the goals of MRO service providers is to provide fast turns of the planes entrusted to them by airline operators. To support this objective, a hangar fire detection system must have two very important capabilities: quickly detect the presence of flames, and reject false alarms (generated by welding, engine start-ups, etc.) that could unnecessarily initiate suppression systems, interrupt operations and potentially lead to significant aircraft damage. Fire Protection System The project manager for the Chicago Rockford hangar expansion looked to local fire protection contractor The solution for hundreds of hangars in the past 10 years – from military bases to commercial hangars and MRO facilities – has been to deploy optical flame detectors from Det-Tronics. When it was time to specify the fire protection system for the mammoth hangar bays, the project manager for the Chicago Rockford hangar expansion looked to local fire protection contractor, Absolute Fire Protection, Inc., to handle the fire protection system. In turn, John Danis of Absolute called in 3S Incorporated, a Harrison, Ohio firm that specializes in industrial and special hazard systems, to design the detection and foam suppression part of the fire protection system. Because of the size and scope of the Rockford hangar, 3S and Absolute, along with other design and building partners, worked for nearly three years to take the project from initial planning to construction. Multispectrum Infrared Flame Detectors During that time, a construction engineer had calculated it would take no less than 84 detectors per hangar bay to monitor the facilities for fire. Aaron Hinkle, sales engineer at 3S, disagreed. “I realized that was far more than necessary, if we just picked the right product for the job,” he says. All the alarms contractor had to do was install four detectors on each side wall" Hinkle had worked with the Det-Tronics X3301 Multispectrum Infrared (IR) flame detectors on previous hangar projects, and he knew the units possessed the optical power, field-of-view capacity and speed to do what was required. In consultation with Det-Tronics applications engineers, Hinkle came to the conclusion that, “Because of the X3301’s performance attributes, each 119,000-square-foot hangar could be covered with just 10 detectors from Det-Tronics. Using just ten detectors per bay greatly simplified the work,” Hinkle explains. “All the alarms contractor had to do was install four detectors on each side wall and two on the back wall. The front wall is the giant door that opens up to allow the craft to enter and exit.” False Alarm Rejection There were considerable cost savings in equipment and related hardware, as well as labor savings due both to the small number of units to be installed and the fact that the X3301 detectors could be placed at a much easier-to-reach height of just 8 to 10 feet off the floor rather than near the top of the 10-story hangar bays. To maximize false alarm rejection, X3301 flame detectors are programmed to run in Det-Tronics® Hangar Mode™, an option that incorporates a delay mechanism. The mechanism extends the processing time to react to fires, letting the detector distinguish between an actual fire and an event like a short duration auxiliary power unit startup. The operation mode has no effect on detection ranges or field of view, but can prevent an innocent action (such as a crew firing up gas heaters to stay warm) from resulting in an unwanted foam dump. Foam Suppression System AAR’s foam suppression system has gone off only once, and that was intentional An impressive demonstration to date, AAR’s foam suppression system has gone off only once, and that was intentional. To certify that the new system was working properly, Absolute, 3S and other suppliers commissioned the overall protection system by simulating an actual fire suppression event. They recorded it on video, and it’s a stunning sight. Daubert, facility manager for the AAR hangars, was delighted when he saw the video. “Within seconds of being triggered, foam erupts from dispensers in the ceiling. In no time, it has put a layer on every inch of the hangar’s floor. Within 3-and-a-half minutes, the foam has stacked up to a 10-foot depth, smothering any possible fire.” “I had never seen a system of that magnitude before,” Daubert continues. “Seeing just how fast we could stop a fire from spreading and put it out was pretty impressive. Thanks to the Det-Tronics detectors and the system’s other components, it’s obvious our hangar is well protected from the dangers of fire.”
Det-Tronics has introduced a new high-speed deluge module (HSDM) for the Det-Tronics Eagle Quantum Premier (EQP) fire and gas safety controller. The HSDM expands the capability of the EQP so it can activate ultra-highspeed suppression systems for high-hazard applications such as, but not limited to, munitions manufacturing. Det-Tronics, a provider of fire- and gas-safety systems, is a part of Carrier, a global provider of innovative heating, ventilating and air conditioning (HVAC), refrigeration, fire, security and building automation technologies. The new Det-Tronics HSDM meets today’s standards for an ultra-high-speed detection and releasing system. ultrahigh-speed detection The EQP safety system is FM Approved with the HSDM, making it capable of ultra-high-speed response According to the National Fire Protection Association (NFPA) Standard for Water Spray Fixed Systems for Fire Protection (NFPA 15), ultrahigh-speed detection and releasing systems must be capable of response in 100 or fewer milliseconds (ms) from the presentation of energy source to flow of water from the deluge nozzle. NFPA 72 National Fire Alarm and Signaling Code requires that releasing devices for suppression systems shall be listed for use with releasing service alarm control units. A listed fire alarm system has all components performance-certified both individually and as an assembled system. As an ancillary component of the EQP, the new HSDM is hazardous-location rated by FM Approvals, CSA, ATEX and IECEx, has SIL2 and DNV-GL approvals, and is CE marked. code-compliant system In addition, the EQP safety system is FM Approved with the HSDM, making it the industry’s only listed flame detection and releasing system capable of ultra-high-speed response. “After over 35 years of serving this industry, we are very excited about the release of a new high-speed deluge module as part of our ultra-high-speed system offering,” said Michael Hosch, product manager, Det-Tronics. “This new solution allows us to offer a code-compliant system that is listed and meets the current applicable standards for ultra-high-speed detection and releasing systems.”
The X3302 multispectrum infrared flame detector (X3302) from Det-Tronics is now third-party approved for the industry’s field-of-view for hydrogen fires, as well as approved for methane, methanol and synthesis gas (syngas) fires. Det-Tronics, a global provider of fire- and gas-safety systems, is a part of Carrier, a global provider of innovative heating, ventilating air conditioning (HVAC), refrigeration, fire, security and building automation technologies. The X3302 flame detector’s enhancements include third-party certification to detect a 30-inch (76 cm) hydrogen plume fire at 125 feet (38 meters) on-axis in as little as three seconds, a 25% improvement in on-axis detection range over the previous design. false alarm rejection In addition to being certified SIL 2-capable and performance-certified to FM 3260 for hydrogen fires, the X3302 is now FM Approved to detect methanol, methane and syngas fires, which contain a mixture of 53% hydrogen, 24% methane, 11% nitrogen, 8% carbon monoxide and 4% carbon dioxide. Other certifications include CSA, ATEX, IECEx, INMETRO and California State Fire Marshall. Additional global certifications are pending. Customers will appreciate that the X3302 is easy to install and maintain, which reduces total operational costs" Recently, gas streams for turbine power generation have transitioned to mixtures of hydrogen, methane and other gases. The X3302 can provide fire protection for these applications without requiring supplemental hydrocarbon flame detectors. The X3302 flame detector is also suited for hydrogen storage, aerospace, battery rooms, refining and filling stations. The X3302 flame detector has a patented detection algorithm, heated optics and signal processing features which increase false alarm rejection. Automatic Optical Integrity The patented Automatic Optical Integrity (oi) feature, an automatic calibrated performance test that is conducted once per minute, verifies complete operational capabilities. The detector will declare a fault if it loses more than 50% of its original detection range, proactively alerting operators to a potential loss of fire protection. “We are excited to offer the X3302 with expanded detection capability that addresses the need for reliable, fast multi-fuel fire detection at greater distances,” said Michael Hosch, product manager, Det-Tronics. “In addition to its enhanced functionality and safety record, our customers will continue to appreciate that the X3302 is easy to install and maintain, which reduces total operational costs.”
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