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’, where he mentioned how the extinguishant is well suited to the protection of irreplaceable works and artefacts in extremely useful buildings.
Tim’s lecture focused on a hearth take a look at protocol that was formulated to verify the efficiency and use of Tyco’s personal water mist resolution, AquaMist, in an historic building, house to precious archive storage. ไดอะแฟรม (NFPA) 750 commonplace requires that, when employing a water mist suppression system, fire testing is undertaken pertinent to the chance. However, of the printed hearth 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’ sort, which restrict the amount of house for building companies, including those for extinguishing system pipework.
Together with the project stakeholders, Tyco devised the protocol to include test rig and structure, test sort, fireplace load, data acquisition (for instance, sensors and imaging), hardware required (such as pumps, nozzles, pipe, tank, generator), and well being and security procedures (for instance, the fireplace brigade). The related efficiency primarily based fire tests have been then designed to copy the vary of application parameters related to archive storage.
While ignition sources at the authentic web site had been identified to be minimal, and the principle fire source confirmed as arson, the multi-level building poses quite a few challenges that had to be thought-about when formulating the fire take a look at protocol to ensure effective safety. Low ceilings and quite a few obstructions, such as lighting, ducts and pillars, contribute in the course of the confined surroundings of the archive storage basement level. Items are stored in a mix of open racks and compact racks, which offer less than a 150mm hole between themselves and the ceiling, and there is limited on-site water storage. Pre-test threat evaluation also highlighted restricted access and exits under and above ground, so it’s important for storage space to be maximised and protected egress provided in case of the event of a fire. In addition, the extremely valuable nature of the storage contents meant that the selected fire suppression resolution had to make sure minimal damage to these historical items.
To obtain validation, the exams needed to meet varied goals. These comprised fast control of the fire inside a prescribed space (in this case, defined as inside a block of racks); control of temperature; attenuation of radiation; and minimisation of collateral damage via water clean-up. They also had to bear in mind varied parameters, including the desired excessive pressure mist system; a 30 minute run time; and an annual measurable achievement objective (AMAO) defined in accordance with a formulation based on the amount of nozzles activating throughout testing.
The hearth checks, carried out for both open and roller racks with minimum storage gaps, were undertaken in a personalized check rig, designed, constructed and fitted to copy the exact specification, racking arrangements and storage materials of the positioning. Considered a high load, the gas supplies were similar to that found in archive storage, including paper, books, micro-film and CD cases.
digital pressure gauge was defined by move or fail standards and determined by detailed quantitative measurements on system configuration, hydraulic analysis, discharge stress, discharge sequence, fire spread, temperature, hearth injury and water consumption. In each exams, Tyco’s AquaMist system operated effectively and was noticed to suppress and management the fireplace effectively. The project team was impressed by the dearth of fireside and smoke damage to the materials and construction and the product has since been put in in the building in query.
“The IWMA conference is a unbelievable opportunity to focus on the benefits of water mist as a fireplace suppression answer, as well as demonstrate its versatility in a broad range of purposes,” comments Dr Tim Nichols. “Identifying a spot in the market and taking the chance to formulate a hearth test protocol for archive storage enabled us to validate the expert capabilities of our AquaMist system and facilitate safety of a customer’s extremely priceless property.”
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