Tyco Fire Protection Products showcased its experience in water mist suppression solutions on the International Water Mist Association (IWMA) Conference in Istanbul. Dr Tim Nichols, Sales Director Water Mist EMEA, gave a presentation entitled ‘Fire Protection of Compact Archive Storage using Water Mist’, the place he mentioned how the extinguishant is nicely suited to the safety of irreplaceable works and artefacts in highly useful buildings.
Tim’s lecture centered on a fire take a look at protocol that was formulated to confirm the performance and use of Tyco’s personal water mist answer, AquaMist, in an historical constructing, home to precious archive storage. The National Fire Protection Association (NFPA) 750 standard requires that, when using a water mist suppression system, fireplace testing is undertaken pertinent to the danger. However, of the revealed hearth test protocols listed in NFPA 750, none particulars the requirements for archives that include curler (compact) racking. Many of the racks within the focused building are of the ‘roller’ sort, which limit the amount of house for building providers, together with those for extinguishing system pipework.
Together with the challenge stakeholders, Tyco devised the protocol to include take a look at rig and structure, test kind, fireplace load, data acquisition (for instance, sensors and imaging), hardware required (such as pumps, nozzles, pipe, tank, generator), and well being and safety procedures (for instance, the fire brigade). The associated performance based mostly fireplace exams were then designed to duplicate the range of application parameters associated with archive storage.
While ignition sources on the unique site had been recognized to be minimal, and the principle fire source confirmed as arson, the multi-level constructing poses quite a few challenges that had to be thought-about when formulating the fire check protocol to guarantee effective safety. Low ceilings and numerous obstructions, such as lighting, ducts and pillars, contribute towards the confined environment of the archive storage basement stage. Items are saved in a mixture of open racks and compact racks, which provide lower than a 150mm gap between themselves and the ceiling, and there’s restricted on-site water storage. Pre-test threat analysis additionally highlighted restricted entry and exits below and above ground, so it’s important for cupboard space to be maximised and safe egress provided in case of the occasion of a hearth. In addition, the extremely priceless nature of the storage contents meant that the selected fireplace suppression resolution had to make sure minimal damage to those historic items.
To achieve validation, the checks had to meet numerous objectives. These comprised speedy control of the fire within a prescribed area (in this case, defined as within a block of racks); control of temperature; attenuation of radiation; and minimisation of collateral injury via water clean-up. They also had to take into account varied parameters, together with the desired excessive pressure mist system; a 30 minute run time; and an annual measurable achievement goal (AMAO) defined according to a formulation based mostly on the quantity of nozzles activating throughout testing.
The hearth tests, carried out for each open and roller racks with minimum storage gaps, have been undertaken in a customised take a look at rig, designed, constructed and fitted to replicate the precise specification, racking arrangements and storage supplies of the location. Considered a excessive load, the gas supplies have been identical to that present in archive storage, together with paper, books, micro-film and CD circumstances.
Success was outlined by cross or fail criteria and determined by detailed quantitative measurements on system configuration, hydraulic analysis, discharge pressure, discharge sequence, hearth spread, temperature, fire injury and water consumption. In digital pressure gauge ราคา exams, Tyco’s AquaMist system operated successfully and was observed to suppress and control the hearth effectively. The venture team was impressed by the shortage of fireplace and smoke damage to the supplies and structure and the product has since been put in within the constructing in query.
“The IWMA convention is a unbelievable opportunity to highlight the advantages of water mist as a fireplace suppression answer, as well as reveal its versatility in a variety of applications,” feedback Dr Tim Nichols. “Identifying a gap available within the market and taking the chance to formulate a hearth test protocol for archive storage enabled us to validate the skilled capabilities of our AquaMist system and facilitate protection of a customer’s highly valuable belongings.”
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