Water Mitigation
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SG studied Water Mitigation at least before 2002
1145 Numerical Study of Water Mitigation of an Explosion in Free Field and Tunnel, Cheng Ming, Singapore
2.Water Mitigation in newssearch for Water MitigationDSTA and its Sweden counterpart successfully conducted tests to study the use of water in mitigating the effects of a blast. These studies can potentially be used to minimise the amount of land around facilities that needs to be set aside as safety buffers.
SAFRA radio coverage
3.Recenly,UK also reveleavd this technology
Broadcast on 8 February 2006 - 7am, 9am, 1pm, 6pm, 8pm
Engineers worldwide have speculated that water is effective in reducing the harmful effects of explosions.
The Defence Science and Technology Agency conducted two large-scale water mitigation tests with the Swedish Defence Research Agency last year.
However, executing these tests werenÂ’t as easy as one might think due to many difficulties such as adapting to the extreme cold weather conditions.
DSTA's project lead, Mr Ng Chor Boon explains the other challenges faced while engaging in these tests, "Technically, one of the challenges was to determine how to place the water itself around the chargers so as to maximize the mitigation effect. Another challenge was to ensure that the instrumentation or gauges actually survive and serve its function during the blast because of the very strong environment around. This instrumentation of gauges have to survive to produce the correct readings."
Broadcast on 8 February 2006 - 8am, 12pm, 2pm & 7pm
Engineers worldwide have speculated that water is effective in reducing the harmful effects of explosions.
Thus, the Defence Science and Technology Agency or DSTA conducted two large-scale water mitigation tests in Sweden last year with the Swedish Defence Research Agency.
The tests validated that water can be used to reduce effectively the amplitude of blast pressures in an enclosed environment.
DSTA's project lead, Mr Ng Chor Boon explains how water mitigation is effective in Singapore, "In land-scarce Singapore, the concept of the water mitigation can potentially be used to minimise the amount of land around the explosive storage facilities that needs to be set-aside as safety buffers. In that sense, the land savings created can be quite significant."
4.Strengths of our defence capability
1. Use the softest to counter the hardest.We dared to do others not keen to do.
29/06/2005 STimes Page: H2
Headline: It's true, water can absorb power of big blast
By: David BoeyDEFENCE engineers here made an explosive breakthrough recently that could radically change the design of military bunkers and civilian bomb shelters.
2. More than 6 years of effort to confirm water as buffer
After experiments showed that water-filled containers could help absorb the
destructive power of a bomb blast, engineers from the Defence Science and
Technology Agency (DSTA) held a full-scale trial with their counterparts in
Sweden, blowing up 10 tonnes of explosives.
Packed around the 10 one-tonne lots of explosives - each capable of punching a 3m-wide crater in the ground - were containers filled with two tonnes of water each.
On detonation, the containers were wrecked. But the energy from the
explosion vapourised the water, reducing the effect of the blast by 60 per
cent.
Hailing the results as a major breakthrough, DSTA chief
executive Richard Lim said yesterday that defence
engineers worldwide had considered using water
barriers to reduce the effect of an explosion.
But none had tested the idea on the scale of the
experiment conducted in Sweden last month.
He added that the experiments are important as water
barriers can potentially reduce the amount of land
needed as a safety buffer around ammunition bunkers.
Mr Lim updated the media on research developments
at DSTA when he unveiled a 60-page book to mark five years of DSTA's achievements.
The book will be distributed to organisations such
as government bodies, tertiary institutions
and public libraries. DSTA was formed five years
ago from several Ministry of Defence departments to
serve as the national authority on weapons procurements
and military technology. Mr Lim added that another area
his engineers are working on is to help
national security planners assess the impact of a
bomb blast, similar to the car bomb detonated outside
the JW Marriott Hotel in Jakarta. The August 2003
terror attack killed 12 people.
'One of the scenarios that we are looking into is
the extent of building damage and casualties in
the event of a car bomb exploding near or at the
entrance of a hotel, similar to the attack at the
Marriott,' he said. From its analysis, using compute
r modelling and other tools, DSTA will
recommend measures to minimise casualties
and damages, if not prevent an attack.In undertaking this project, MINDEF achieved
fr Speech by Mr David Lim, Minister of State for Defence and Information & the Arts, at the Ground-Breaking Ceremony for the Underground Ammunition Facilty Email Article Dd: 12 Aug 1999,
a number of ground-breaking results in R&D.
Significant achievements have been made in
water mitigation and ground shock studies.
Water mitigation makes use of water to absorb
the energy of an accidental explosion. This greatly
reduces the safety buffer zone, freeing up land
for productive use. Ground shock studies enables
our engineers to formulate structural engineering
codes for the safe construction of buildings in areas
affected by ground shock effects. This also reduces
land wastage.
fr http://www.mindef.gov.sg/imindef/news_and_events/nr/1999/aug/12aug99_nr.html
Pl note Sg rewrite ammo storage code for NATO. -
Geez.... SAF dealing with waterbed exports ?
Waterbeds primarily consist of two types, hard-sided beds and soft-sided beds.
A hard-sided waterbed consists of a water-containing mattress inside a rectangular frame of wood resting on a plywood deck that sits on a platform. Platforms may incorporate drawer systems for storage. Frames may be decorative, with elaborate headboards or tall posts.
A soft-sided waterbed consists of a water-containing mattress inside of a rectangular frame of sturdy foam, zippered inside of a fabric casing, which sits on a platform. The effect is to look like a conventional bed and is designed to fit into existing bedroom furniture. The platform usually looks like a conventional foundation or box spring, and sits atop a much-stronger-than-normal metal frame -
2. More than 6 years of effort to confirm water as buffer
mythbuster confirm that in 5 minutes