Firefighting with Water Motor – Driven Foam Pump System

Tyco Fire Protection Products showcased its experience in water mist suppression solutions 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 utilizing Water Mist’, the place he discussed how the extinguishant is well suited to the safety of irreplaceable works and artefacts in extremely valuable buildings.
Tim’s lecture centered on a fire take a look at protocol that was formulated to confirm the efficiency and use of Tyco’s personal water mist answer, AquaMist, in an historic constructing, residence to precious archive storage. The National Fire Protection Association (NFPA) 750 standard requires that, when employing a water mist suppression system, hearth testing is undertaken pertinent to the danger. However, of the revealed hearth check protocols listed in NFPA 750, none particulars the requirements for archives that contain roller (compact) racking. Many of the racks in the targeted building are of the ‘roller’ sort, which limit the amount of area for building providers, including these for extinguishing system pipework.
Together with Bona fide , Tyco devised the protocol to incorporate test rig and layout, check sort, fire load, information acquisition (for example, sensors and imaging), hardware required (such as pumps, nozzles, pipe, tank, generator), and well being and security procedures (for occasion, the fire brigade). The related performance based fireplace tests were then designed to copy the range of application parameters associated with archive storage.
While ignition sources on the authentic web site had been recognized to be minimal, and the main fire source confirmed as arson, the multi-level constructing poses quite a few challenges that had to be thought-about when formulating the fireplace test protocol to ensure efficient safety. Low ceilings and quite a few obstructions, similar to lighting, ducts and pillars, contribute in the direction of the confined surroundings of the archive storage basement level. Items are stored in a mixture of open racks and compact racks, which offer less than a 150mm hole between themselves and the ceiling, and there is restricted on-site water storage. Pre-test risk evaluation additionally highlighted restricted entry and exits under and above floor, so it is essential for cupboard space to be maximised and secure egress supplied in case of the event of a fireplace. In addition, the extremely useful nature of the storage contents meant that the chosen fireplace suppression answer had to make sure minimal harm to these historical items.
To obtain validation, the exams needed to meet numerous objectives. These comprised speedy control of the fireplace within a prescribed space (in this case, defined as within a block of racks); management of temperature; attenuation of radiation; and minimisation of collateral damage by way of water clean-up. They also had to take into account various parameters, together with the specified high pressure mist system; a 30 minute run time; and an annual measurable achievement objective (AMAO) outlined based on a formulation primarily based on the amount of nozzles activating during testing.
The fire tests, carried out for both open and roller racks with minimum storage gaps, were undertaken in a customised take a look at rig, designed, built and fitted to copy the exact specification, racking arrangements and storage materials of the site. Considered a excessive load, the fuel supplies have been equivalent to that found in archive storage, including paper, books, micro-film and CD circumstances.
Success was defined by pass or fail criteria and determined by detailed quantitative measurements on system configuration, hydraulic analysis, discharge stress, discharge sequence, fire spread, temperature, hearth damage and water consumption. In each checks, Tyco’s AquaMist system operated successfully and was observed to suppress and control the fire effectively. The venture staff was impressed by the shortage of fire and smoke damage to the supplies and construction and the product has since been installed within the constructing in query.
“The IWMA convention is a incredible alternative to spotlight the benefits of water mist as a fireplace suppression resolution, as properly as reveal its versatility in a variety of applications,” comments Dr Tim Nichols. “Identifying a spot out there and taking the opportunity to formulate a fire test protocol for archive storage enabled us to validate the professional capabilities of our AquaMist system and facilitate protection of a customer’s highly priceless assets.”
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