# Question: At What Pounds Per Square Inch Of Blast Pressure From An Explosion Does Lung Collapse Or Damage Occur?

## 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?.

## How much PSI is in a nuclear bomb?

Overpressure ranges from 1 to 50 psi (6.9 to 345 kilopascals) of a 1 kiloton of TNT air burst as a function of burst height.

## What PSI is lethal?

The threshold value for lung damage is 12 psi and fatal effect is 40 psi (Glover, 2002). At a pressure of about 35 kilopascals (5 psi), the human eardrum may rupture. With an overpressure of 100 kPa (14 PSI) almost all eardrums will be ruptured.

## What PSI means?

pounds per square inchor p.s.i. pounds per square inch.

## How many kilotons is Tsar Bomba?

50,000 kilotonsBut it still pales in comparison to the largest man-made explosion ever on Earth – the Soviet Union’s Tsar Bomba – King of Bombs – detonated in 1961 in the height of the nuclear arms race. That hydrogen bomb unleashed a staggering power of 50,000 kilotons, or 50 megatons.

## 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.

## Is Hiroshima still radioactive?

Among some there is the unfounded fear that Hiroshima and Nagasaki are still radioactive; in reality, this is not true. Following a nuclear explosion, there are two forms of residual radioactivity. … In fact, nearly all the induced radioactivity decayed within a few days of the explosions.

## What are the different levels of injury associated with a blast explosion injury?

The four basic mechanisms of blast injury are termed as primary, secondary, tertiary, and quaternary (Table 1).

## What are the three characteristics of all explosions?

What are three characteristics of all explosions? The three characteristics are a large release of energy, production of quickly expanding gas molecules, and a rapid reaction rate.

## 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.

## What is blast lung?

“Blast lung” is a clinical diagnosis and is characterized as respiratory difficulty and hypoxia without obvious external injury to the chest. It may be complicated by pneumothoraces and air emboli and may be associated with multiple other injuries.

## 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.

## What is the most powerful explosive in the world?

PETN is a powerful explosive material with a relative effectiveness factor of 1.66. When mixed with a plasticizer, PETN forms a plastic explosive. Along with RDX it is the main ingredient of Semtex.

## What is meant by explosion?

noun. an act or instance of exploding; a violent expansion or bursting with noise, as of gunpowder or a boiler (opposed to implosion). … a sudden, rapid, or great increase: a population explosion. the burning of the mixture of fuel and air in an internal-combustion engine.

## How strong is a kiloton?

a unit of weight, equal to 1000 tons. an explosive force equal to that of 1000 tons of TNT.

## How many megatons is the biggest nuke?

50 megatonsUSSR, most powerful nuclear weapon ever detonated, yield of 50 megatons, (50 million tons of TNT). In its “final” form (i.e. with a depleted uranium tamper instead of one made of lead) it would have been 100 megatons.

## How is explosive force measured?

… atomic bombs is measured in kilotons, each unit of which equals the explosive force of 1,000 tons of TNT. The explosive power of hydrogen bombs, by contrast, is frequently expressed in megatons, each unit of which equals the explosive force of 1,000,000 tons of TNT.

## Do explosions throw you?

Tertiary injuries Displacement of air by the explosion creates a blast wind that can throw victims against solid objects. Injuries resulting from this type of traumatic impact are referred to as tertiary blast injuries.