Shocked the whole country "when the radioactive cesium-137 pipe (Cesium, Cs-137)", diameter 5 inches, length 8 inches, weight 25 kg, mysteriously disappeared from a steam power plant in Industrial Estate 304, Prachinburi Province before it was found. It is a contaminant in the red dust inside a nearby iron smelter.


the "Nuclear and Radiation Emergency Operations Center"

laid carpets in the steel mill before additional radioactive cesium was found in one of the three metal smelting furnaces, with a low level of 0.07-0.10 microSv/h. Dirt in the vacuum system

and a number of metal dust filtration systems

It is believed to be caused by the smelting of metal in the past.

In the midst of suspicion, still can't prove that

"Was the cesium melted into the missing pieces?"

Until causing concern for people to not be confident in eating fruits and vegetables in the area

"cancelled, returned,"

escalating, affecting tourism as well

Although the government will confirm the results of collecting samples of soil, water, air, vegetables and fruits in the garden near the factory.

" No radioactive

cesium-137 contamination found"

How does Prussian blue antidote affect the body?

Asst. Prof. Dr. Krisanat


Department of Radiology

The Faculty of Medicine said that the missing cesium-137 was used as a tool to measure the level of ash in silos, used in industrial plants such as moisture and density measurements of paper or steel, with radiation doses beginning on March 1. .1995 is at 80 millicuries (80mCi).

If the weight is calculated at 0.000505 g or about 505 micrograms after 30 years or half-life has passed.

The radiation strength of cesium has dropped to its current level of 41.4 millicuries (data from the Office of Atoms for Peace). Industrially considered low.

because from the data it is used from 1-10,000 millicurie

If the dose of cesium radiation this time is compared with

“Chernobyl Nuclear Power Plant Accident (Chernobyl 1986)”

contaminating the environment, 27 kg or 2.35×109 millicuries, which is 56.76 million times greater than this time.


the “2011 Fukushima Daiichi Nuclear Power Plant Accident”

estimated that cesium contaminated the environment at 17 PBq = 4.60×108 mCurie, which is 11 million times more radiation than in this case, of which 24% was released into the sea. directly

if explaining to make the picture clearer as in the case

The “Cobalt-60 Incident”

was disassembled by a junkyard in Samut Prakan Province.

It is estimated that the ejected radiation intensity was 1,000 times greater than this time. In terms of cobalt-60 energy

Caesium-137, which is used to treat cancer, usually has twice the energy of cesium-137, causing injuries at that time.

and died

And there is a question,

"What is the chance that cesium-137 is melted into the environment?"

This must be understood that cesium has a low boiling point compared to iron, 671 degrees Celsius. When melting, cesium tends to vaporize.

and dust in the smelting room

If the Forge Chamber is cleared

Or the smoke caused by melting spreads, there is a chance to contaminate the environment.


“future and dust in the melting chamber”

if not stored in a closed system.

or being treated as radioactive waste

"Potentially contaminated into water sources, blown into the air, or accumulated in the environment.


Therefore, the chances of radiation

escaping and contaminating the environment are quite low.

But if you look at a bad situation

“In the case of cesium leaking into the environment”,

what will happen must be explained in this way:

“radiation effects”

can be received from the outside, which can affect the human body as well.

Therefore, the case of the cesium leak would result in people in the neighborhood community.

or staff can inhale into the body

reinforces that the area around the factory where the accident happened

5-6 radioactive monitoring stations have been set up at the

Office of the Atomic Energy Agency. The radiation dose was found to be 0.02-0.05, which was already normal in nature.

I confirm that

“In case of cesium-137 current

It can spread over 1,000 km.”

This matter was impossible to spread that far.

Because cesium is heavier than PM 2.5 dust, it cannot be blown away.

In addition, the amount of natural dilution is very small.

As a result, no toxic contamination has been detected in the surrounding environment.

“Cesium-137 Contamination Concerns

In fact, vegetables, fruit, and milk that are consumed contain naturally occurring radioactive substances. The process of contaminating soil radiation takes time.

Neither the cesium in question was low, there was no chance of contamination.

So everyone eats fruits and vegetables.

and can travel in the area as normal,”

Asst. Prof. Dr. Kritsanat said.

as well as

Assoc. Prof. Satriya Trakulsrichai,

Center for Poisonology and Department of Emergency Medicine.

The Faculty of Medicine said that for cesium-137

It is a radioactive isotope with a half-life (half-life) meaning the radiation strength of about 30 years.

and gamma rays come out

Therefore, if

“human exposure to cesium will affect the body”,

the severity depends on many factors such as duration, amount, size, and the area of ​​the body exposed to radiation is only partial.

or all over the body

Which will affect the body is divided into 2 phases, that is,

"short term"

often results in local (local radiation injury)

For example, when

“radiation touches the skin area”

there will be redness, itching, swelling, or the likelihood of blisters forming.

may also result in hair

or hair loss as well

As for the effects on other systems that occur suddenly called

“Acute radiation syndrome”

usually affects multiple body systems.

By the first symptoms such as nausea, vomiting, diarrhea, then disappear temporarily for 1-3 weeks and then affects the body's 3 systems:

2. Digestive system

Nausea, vomiting, bloody diarrhea

As for

“long-term effects,”

it is often an increased risk of developing cancer.


"anti-venom used to treat cesium poisoning" is

often mentioned a lot.

“Prussian Blue”

is a blue substance used in painting.

and is used as an antidote to treat cesium poisoning in the body

But it is not a treatment for skin exposure.

or contaminated clothing

Because Prussian blue has the main mechanism of action by binding to cesium in the intestines.

to prevent it from being absorbed into the body

It also reduces the reabsorption of cesium by inhibiting the reabsorption process from the gastrointestinal tract to the liver.

And expelled through the bile back to the gastrointestinal tract again, which happens over and over again

Of course,

“Prussian Blue”

often has side effects in its treatment, such as constipation or hypokalemia.

discoloration of stool, mucous membranes, or teeth

“So you shouldn't buy it to eat yourself”

because the chemicals you buy may not be made into drugs.

And especially in the case of online trading, the purpose is to write pictures.

“There may be side effects.”

Therefore, the use of Prussian blue to treat cesium-137

Best used under medical supervision.

Finally, for the past 20 years, the “Thailand Poison Center” has kept Prussian Blue in stock, but over the past 20 years it has not been used.

causing the stored drug to expire

Currently, Thailand does not have this type of reserve drug.

But there is information that the Food and Drug Administration (FDA) has ordered for future use.

Reiterated that the cesium-137 found is still waiting to be proven.

“Is it the same piece that disappeared?” Because of this, the people on the ground still had to be careful to observe the suspicious object.

"Radiation sign" in case of finding a suspicious object, do not return it.

or try to prove it yourself

"Should call the hotline 1296" because it can cause serious harm.