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 Mitigation
DSTA 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
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 werent 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."
3.Recenly,UK also reveleavd this
technology
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 Boey
DEFENCE engineers here made an explosive breakthrough recently
that could radically change the design of military bunkers and
civilian bomb shelters.
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.
2. More than 6 years of effort to confirm water as
buffer
In undertaking this project, MINDEF achieved
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 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,
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.
