Tyco Fire Protection Products showcased its experience in water mist suppression options 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’, where he discussed how the extinguishant is well suited to the protection of irreplaceable works and artefacts in extremely useful buildings.
Tim’s lecture targeted on a fire test protocol that was formulated to confirm the performance and use of Tyco’s personal water mist resolution, AquaMist, in an historic building, house to valuable archive storage. The National Fire Protection Association (NFPA) 750 normal requires that, when using a water mist suppression system, fire testing is undertaken pertinent to the danger. However, of the printed fire test protocols listed in NFPA 750, none particulars the necessities for archives that contain curler (compact) racking. Many of the racks in the focused building are of the ‘roller’ type, which limit the amount of house for constructing services, including these for extinguishing system pipework.
Together with the project stakeholders, Tyco devised the protocol to include check rig and structure, take a look at type, fireplace load, data acquisition (for example, sensors and imaging), hardware required (such as pumps, nozzles, pipe, tank, generator), and well being and security procedures (for occasion, the fireplace brigade). The associated efficiency based fire checks were then designed to duplicate the vary of utility parameters related to archive storage.
While ignition sources on the authentic site were recognized to be minimal, and the primary fire source confirmed as arson, the multi-level constructing poses quite a few challenges that needed to be thought of when formulating the hearth check protocol to guarantee effective protection. Low ceilings and quite a few obstructions, such as lighting, ducts and pillars, contribute in direction of the confined environment of the archive storage basement level. Items are saved in a mixture of open racks and compact racks, which supply less than a 150mm gap between themselves and the ceiling, and there is restricted on-site water storage. Pre-test risk analysis additionally highlighted restricted access and exits beneath and above floor, so it is important for storage space to be maximised and safe egress offered in case of the occasion of a fireplace. In addition, the extremely valuable nature of the storage contents meant that the selected hearth suppression resolution had to make sure minimal harm to these historical items.
To achieve เกจ์วัดแรงดันน้ำ , the tests had to meet numerous aims. These comprised rapid control of the hearth within a prescribed area (in this case, outlined as inside a block of racks); management of temperature; attenuation of radiation; and minimisation of collateral injury through water clean-up. They additionally had to keep in mind varied parameters, together with the desired high stress mist system; a 30 minute run time; and an annual measurable achievement goal (AMAO) defined in accordance with a formulation primarily based on the quantity of nozzles activating throughout testing.
The fire exams, carried out for both open and roller racks with minimum storage gaps, were undertaken in a customised take a look at rig, designed, constructed and fitted to replicate the exact specification, racking arrangements and storage materials of the site. Considered a high load, the gas supplies were similar to that found in archive storage, including paper, books, micro-film and CD circumstances.
Success was outlined by pass or fail criteria and determined by detailed quantitative measurements on system configuration, hydraulic analysis, discharge stress, discharge sequence, hearth unfold, temperature, fire injury and water consumption. In each exams, Tyco’s AquaMist system operated successfully and was observed to suppress and management the fire efficiently. The venture group was impressed by the lack of fire and smoke injury to the materials and structure and the product has since been put in within the building in question.
“The IWMA convention is a unbelievable opportunity to spotlight the advantages of water mist as a fire suppression answer, in addition to demonstrate its versatility in a variety of applications,” feedback Dr Tim Nichols. “Identifying a spot out there and taking the chance to formulate a fire test protocol for archive storage enabled us to validate the skilled capabilities of our AquaMist system and facilitate protection of a customer’s highly priceless belongings.”
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