- What is blast effect?
- What is a concussion wave?
- What causes an explosion?
- How many people have died of radiation?
- How can we prevent explosions?
- How do you treat a blast injury?
- Are all explosions dangerous?
- Do you die on impact in a helicopter crash?
- What two chemicals can make an explosion?
- Are explosions always used to destroy things?
- What happens to the human body when a bomb explodes?
- How does someone die from an explosion?
- At what psi of blast pressure from an explosion does lung collapse or damage occur?
- What does explosion mean?
- What are the different levels of injury associated with a blast explosion injury?
- What PSI is lethal?
- What are two types of high explosives?
- How fast is a blast wave?
- What is blast trauma?
- What are the effects of explosion?
- What does a shockwave do to your body?
What is blast effect?
Blast injuries can cause hidden sensory and brain damage, with potential neurological and neurosensory consequences.
It is a complex clinical syndrome caused by the combination of all blast effects, i.e., primary, secondary, tertiary and quaternary blast mechanisms..
What is a concussion wave?
Like an ordinary wave, a shock wave carries energy and can propagate through a medium but is characterized by an abrupt, nearly discontinuous, change in pressure, temperature, and density of the medium. … When a shock wave passes through matter, energy is preserved but entropy increases.
What causes an explosion?
An explosion is a rapid expansion of gases. Many explosions occur when gases are exposed to a source of heat- such as fire, sparks, even static elec- tricity-or an increase in pressure. Explosions can also be caused by chemical reactions. … Some chemicals can even explode if exposed to air or water.
How many people have died of radiation?
Radiation scientists Fairlie and Sumner provide some of highest estimates, predicting between 30,000-60,000 deaths.
How can we prevent explosions?
Keep the lights off: Don’t turn the lights on, as that could spark an explosion if gas is present. Make sure you have a flashlight handy. Open all the doors and windows: Make sure you ventilate the house. Keep doors and windows open, that’ll help get any gases out.
How do you treat a blast injury?
Treatment for blast injuries is summarized as: resuscitation, penicillin, anti-tetanus, debridement, wash, fasciotomize, pack, stabilize, and leave. Resuscitation should address the ‘bloody triad’ of hypother- mia, acidosis and coagulopathy. Damage control surgery should aim to correct physiology rather than anatomy.
Are all explosions dangerous?
Unfortunately, most explosions are very dangerous and should be done only by experts. However, there are some types of simple explosions that can be replicated and observed on a much smaller scale.
Do you die on impact in a helicopter crash?
Helicopter crashes are thought of not in distance travelled but in hours of flight. The chance of dying in a helicopter crash is about one death in 100,000 hours of travel.
What two chemicals can make an explosion?
Balancing chemical explosion equationsPriorityComposition of explosive decompositionPhase of products2Hydrogen and chlorineGas3A metal and oxygenSolid4Carbon and oxygenGas5Hydrogen and oxygenGas6 more rows
Are explosions always used to destroy things?
Explosions occur directly in pieces of technological equipment during milling, drying, pneumatic or mechanical transport, storage and filtration, and they usually have fatal consequences. Unfortunately organic substance explosion do not only destroy the equipment, they also often kill.
What happens to the human body when a bomb explodes?
Primary Blast Injury Since only high order explosives create a blast wave, primary blast injuries are unique to high order explosions. The blast wave causes damage to more extensively to air-filled organs. The resulting barotrauma can affect the lungs, auditory organs, the eye, brain, and gastrointestinal tract.
How does someone die from an explosion?
Initial deaths would occur at or near ground zero, caused by the blast, heat, prompt radiation, or flying debris. Blast injuries would include perforated ear drums, lung and gastrointestinal injuries, trauma due to flying debris, fractures and crush injuries, smoke inhalation, and exacerbation of chronic conditions.
At what psi of blast pressure from an explosion does lung collapse or damage occur?
Pulmonary damage occurs in 50% of victims exposed to 500 kPa (72.5 psi), whereas intestinal perforation occurs with much higher pressures. Exposure to pressure levels greater than 550 kPa (79.8 psi) is lethal in more than 50% of cases (Figure 7-2 and Figure 7-3). terrorist bombings: how can we cope?
What does explosion mean?
noun. an act or instance of exploding; a violent expansion or bursting with noise, as of gunpowder or a boiler (opposed to implosion). the noise itself: The loud explosion woke them. a violent outburst, as of laughter or anger. a sudden, rapid, or great increase: a population explosion.
What are the different levels of injury associated with a blast explosion injury?
Chemical explosions cause injuries in four categories (primary, secondary, tertiary, and quaternary). The four categories are based on the impact on the human body due to the blast wave, blast wind, environmental/material factors present in the area of the blast.
What PSI is lethal?
The magnitude of damage due to the blast wave depends on the peak of the initial positive-pressure wave (an overpressure of 414–552 kPa or 60–80 psi is considered potentially lethal), the duration of the overpressure, the medium of the explosion, the distance from the incident blast wave, and the degree of focusing due …
What are two types of high explosives?
Detonating explosives, such as TNT and dynamite, are characterized by extremely rapid decomposition and development of high pressure, whereas deflagrating explosives, such as black and smokeless powders, involve merely fast burning and produce relatively low pressures.
How fast is a blast wave?
When leaving the tube, the shock wave (with an initial shock speed in the tube of about 465 m/s, corresponding to a shock Mach number of 1.35) quickly attains a hemispherical shape and continues expanding at a velocity of ~370 m/s — slightly higher than the speed of sound (Figure 2).
What is blast trauma?
Blast injuries result from explosions that have the capability to cause multisystem, life-threatening injuries in single or multiple victims simultaneously. These types of events present complex triage, diagnostic, and management challenges for the health care provider.
What are the effects of explosion?
Explosion effects generally include those of overpressure, thermal effects, energized projectiles (fragments, debris, and missiles), ground shock, and cratering.
What does a shockwave do to your body?
Air-filled organs, including lungs, the GI tract and middle ear, are especially affected. The blast wave energy moves through the torso to the brain. This can potentially cause damage to tiny cerebral blood vessels, stretching and damaging neural cells in the brain.