Hyper Mist
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Transcript of Hyper Mist
7/30/2019 Hyper Mist
http://slidepdf.com/reader/full/hyper-mist 1/2
Local Application Fire Fighting Systems for Machinery Spaces "HYPER MIST" and "HYPER-LP"
New IMO Requirements
The IMO requires all ships constructed on and after July 1, 2002 to install water-based local fire
extinguishing systems in machinery spaces accommodating machinery with a particularly high risk of fire(main engine, D/G engine, boiler, incinerator, F.O. purifier and I.G.G.) with the aim of extinguishing or
suppressing fires in their early stages. This new rule was established in recognition of the importance of
extinguishing or suppressing fires while they were still small, after analyzing many on-board fire incidents
from all over the world. This idea arose in response to situations in which prompt operation was difficult
ith previous systems (especially CO2 fire extinguishing systems), because the crews' safety had to be
confirmed before discharging the extinguishant, which enabled fires to expand.
Characteristics of the Systems
These systems were developed to satisfy the requirement that a chemical/gas-free water-based fire
fighting system that "does not affect the crew's safety or operation of the vessels" be installed.
Accordingly, a "water mist fire extinguishing system," that uses water mist rather than a traditional water
sprinkling system to extinguish oil fires without adversely affecting the crew, was adopted for these
systems.
"HYPER MIST","HYPER-LP"
Having demonstrated in large-scale impact assessment tests that not only is freshwater micro particle mist
safe for crews, but also that it causes no damage whatsoever during continuous operation of equipment
such as diesel engines, generators and electrical control panels located in protected areas, Both "HYPER
MIST" and "HYPER-LP" have been approved by major classification societies, and obtained CE Marking
(M.E.D). "HYPER MIST" and "HYPER-LP" have already been installed on many vessels.
The "HYPER MIST" employs specially developed nozzles operating at
high pressure (approx. 5MPa) to generate super fine particles of mist
ranging from 30 to 80 microns in diameter. When sprayed on a fire, the
mist offers compound effects: it absorbs radiant heat from the fire,
creates a shield, reduces the temperature of the fire area by evaporating
upon contact with the flame and depletes the oxygen, thereby
extinguishing or suppressing the fire.
The "HYPER-LP" uses nozzles specially designed to provide the same
fire extinguishing performance as the high pressure model at a lower
pressure (approx. 1MPa.)
7/30/2019 Hyper Mist
http://slidepdf.com/reader/full/hyper-mist 2/2
Kashiwa's Activities
Kashiwa has taken the initiative over other manufacturers by conducting evaluation tests on the safety of
using hyper mist with electrical equipment, and the influence of engine room ventilation on the firefighting performance of mist. Kashiwa has also proposed new fire fighting techniques suitable for main
engines such as a "side-shot system", and is highly regarded internationally for contributing to the
resolution of numerous problems associated with the practical application of local fire extinguishing
systems.
Kashiwa's "HYPER MIST" and "HYPER-LP" have been adopted for numerous vessels since their
introduction in 2002, and had been installed in more than 2,900 vessels as of 2009.