Tyco Fire Protection Products showcased its expertise in water mist suppression options at 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’, where he mentioned how the extinguishant is nicely suited to the protection of irreplaceable works and artefacts in highly useful buildings.
Tim’s lecture targeted on a fire take a look at protocol that was formulated to verify the performance and use of Tyco’s own water mist resolution, AquaMist, in an historic building, home to valuable archive storage. The National Fire Protection Association (NFPA) 750 normal requires that, when using a water mist suppression system, fireplace testing is undertaken pertinent to the danger. However, of the printed fire check protocols listed in NFPA 750, none details the requirements for archives that comprise roller (compact) racking. Many of the racks within the targeted building are of the ‘roller’ type, which restrict the quantity of space for constructing companies, including those for extinguishing system pipework.
Together with the venture stakeholders, Tyco devised the protocol to include test rig and layout, check sort, fireplace load, information acquisition (for example, sensors and imaging), hardware required (such as pumps, nozzles, pipe, tank, generator), and well being and safety procedures (for instance, the fireplace brigade). The related performance based hearth tests were then designed to duplicate the range of utility parameters related to archive storage.
While ignition sources on the original website had been recognized to be minimal, and the principle hearth source confirmed as arson, the multi-level building poses numerous challenges that had to be thought-about when formulating the fireplace take a look at protocol to ensure efficient protection. pressure gauge 10 bar and numerous obstructions, similar to lighting, ducts and pillars, contribute in path of the confined surroundings of the archive storage basement stage. Items are saved in a mix of open racks and compact racks, which offer lower than a 150mm gap between themselves and the ceiling, and there is limited on-site water storage. Pre-test threat evaluation also highlighted restricted entry and exits below and above floor, so it’s important for space for storing to be maximised and safe egress provided in case of the event of a hearth. In addition, the highly valuable nature of the storage contents meant that the chosen hearth suppression solution had to ensure minimal damage to those historical items.
To achieve validation, the checks needed to meet numerous aims. These comprised rapid control of the fire inside a prescribed space (in this case, defined as within a block of racks); control of temperature; attenuation of radiation; and minimisation of collateral injury by way of water clean-up. They also needed to take into account numerous parameters, together with the specified excessive strain mist system; a 30 minute run time; and an annual measurable achievement goal (AMAO) defined in accordance with a method primarily based on the amount of nozzles activating throughout testing.
The hearth checks, carried out for both open and roller racks with minimum storage gaps, have been undertaken in a personalized take a look at rig, designed, constructed and fitted to copy the exact specification, racking arrangements and storage supplies of the location. Considered a excessive load, the fuel supplies were similar to that present in archive storage, together with paper, books, micro-film and CD circumstances.
Success was defined by move or fail criteria and determined by detailed quantitative measurements on system configuration, hydraulic evaluation, discharge pressure, discharge sequence, fireplace spread, temperature, hearth injury and water consumption. In both tests, Tyco’s AquaMist system operated successfully and was noticed to suppress and control the fireplace efficiently. The venture staff was impressed by the lack of fire and smoke harm to the materials and structure and the product has since been put in within the constructing in query.
“The IWMA convention is a incredible alternative to spotlight the advantages of water mist as a hearth suppression solution, in addition to demonstrate its versatility in a wide range of functions,” comments Dr Tim Nichols. “Identifying a niche in the market and taking the chance to formulate a hearth take a look at protocol for archive storage enabled us to validate the skilled capabilities of our AquaMist system and facilitate protection of a customer’s extremely useful assets.”

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