Posts Tagged Radiation

We’ve Passed A Red Line – A Conversation with Alexey Yablokov (VIDEO)

“We passed the red line,” says prominent Russian scientist Dr. Alexey Yablokov, who stopped by Blacksmith’s offices for a chat recently when he was in New York.

Dr. Yablokov is one of the world’s leading authorities on radiation contamination. He is a member of the Russian Academy of Sciences, and was an advisor to the Russian government under Yeltsin and Gorbachev.  He has worked for years to rein in the “Cold War inheritance” of toxic pollution. Today, he continues bringing attention to the persistent problem of legacy pollution as well as contamination brought on by modern industry.

In the interview, he notes the vast amount of chemicals and radionuclides that have permeated the environment since the 1950s, and he attributes that to the “disappearance” of a staggering amount of people from the world population today.  (Watch the video for the actual number)

Why then isn’t pollution bigger news?  Well, because pollution is, in many ways, invisible. He believes it is an issue many people fail to notice, especially when they are being poisoned by low doses of pollutants in an environment that presents no immediate danger. “No immediate danger,” Dr. Yablokov points out, does not mean no danger.

He is especially critical of the nuclear industry.  He co-authored a controversial book Chernobyl:Consequences of the Catastrophe for People and the Environment that claims official discussions about Chernobyl have largely undercounted the disaster’s true toll and that many findings reported in Eastern European scientific literature were ignored.

According to Dr. Yablokov, one of the solutions to the pollution problem is education.  Only when people know more about what is happening can they take steps to keep themselves safe.

Dr. Yablokov is currently working on helping to identify and assess hotspots in Russia for Blacksmith’s Toxic Sites Identification Program. He is also writing several papers for the Blacksmith Journal of Health and Pollution.

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Protecting Children in Schools

As we’ve been harshly reminded, schools can sometimes be exposed to great danger. The tragedy last month got me thinking about what we are doing in schools in Mailuu-Suu, Kyrgyzstan. Although the threat is different, the response is the same – we are working to reduce the risks and make things safer.

Mailuu-Suu was where the Soviet Union mined uranium for the first atomic bomb. Since then, residents have been living with this tragic legacy.  Radiation literally flows out of the taps in Mailuu-Suu.  But you wouldn’t immediately spot the danger just by looking at the water or the surroundings.

Mailuu-Suu school cafeteriaIn one school’s neat cafeteria (pictured), where pretty pink curtains frame the windows, and rows of tables are set with lace tablecloths and colorful mugs, children were eating food cooked with contaminated water every day.  Overlooking the room, as if to obscure Mailuu-Suu’s position as one of the world’s worst polluted places, is a poster of a pristine lake flanked by lush mountains and trees. Outside, the children were washing their hands and faces, and drinking water filled with radioactive particles out of a tap in the yard.  Mailuu-Suu’s schools were preparing these children for a bright future, which they might not have because of the constant, everyday poisoning.

It is a complex problem that cannot be solved quickly.  The contamination is everywhere.  We had to start somewhere. So what we did was to focus on reducing the risks to the most vulnerable. We began installing water filters in schools and the hospital.

Child getting blood test, Mailuu-Suu

Child getting blood test, Mailuu-Suu

While each filter is supposed to last for 3 years, in Mailuu-Suu they are useless after just 9 months because of the severe levels of contamination. Until the entire community is cleaned up, we will just have to keep replacing these water filters.  It is the last line of defense for these children.

It is not the ideal solution but it is working.  It is reducing the health risks to these children.  There is still much work to do and the threat remains.  But we cannot just do nothing and we cannot wait for a perfect solution. We must do what we can to make a difference now.  This is true in Mailuu-Suu.  And it is true here in the U.S.

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Video: Chernobyl Elementary School, Central Square

It’s been 25 years since the meltown at Chernobyl and the abandoned town of Pripyat still echoes with tragedy.  Those of you who saw our virtual tour via our blog posts of April 4 and April 6 would already have a sense of the surreal and sobering scene we encountered on our recent visit to the Chernobyl Exclusion Zone.

Now here’s some video (below). Blacksmith staffer Drew McCartor took his camera on a walk through the music room of an abandoned elementary school littered with sheet music, a broken doll, and a piano with a gas mask sitting on its exposed shell. Then he took in the scene standing in the deserted and eerily quiet central square.  Both videos look like scenes from a post-apocalyptic movie.

Radiation cleanup can be a long process but there is hope.  All that is required is commitment and resources.  Just this week, the European Commission pledged around €110 million and donor nations have pledged $785 million to ensure that the Chernobyl site is made stable and environmentally safe.

But while world attention turns once again to Chernobyl on its 25th anniversary, and as new concerns collect around Fukushima, we have to remember that radiation pollution does not just come from a big, spectacular nuclear accident. There are many other hotspots in the world contaminated with radiation pollution from the manufacture of weapons or chemicals.

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Radiation 101: What is it, how much is dangerous, and how does Fukushima compare to Chernobyl?

This is the second post in a series about radiation, Chernobyl and Fukushima.  See the April 4th post below for a tour of the Chernobyl Exclusion Zone.

Our last blog post about Chernobyl generated a lot of interest among our friends, but seemed to raise more questions than it answered.  Many people asked for more basic information about radiation and more comparisons between Chernobyl and Japan, and safe levels versus dangerous levels.  In light of that, we have compiled this follow-up post.

First Things First – What is Radiation (in plain English)?

In our last post, we showed lots of pictures of this little yellow Geiger counter that we used to measure radiation.

So what is this thing measuring?  Basically, it’s measuring both particles and waves in the air around it.  Some radiation is transported via particles that can easily be blocked by a piece of paper, or a jacket.  Other types of radiation exist as waves, that can move straight through a wall.  This devise is measuring both, (two types of particles and one wave) and it’s adding them up to give us a total level of radiation.

The level of radiation is expressed as an amount of radiation (in a unit called Sieverts) per hour of exposure.   So if the Geiger counter reads 0.22 microSieverts per hour (as it does in the photo above) that means I received .22 microSieverts of radiation while having my hour-long breakfast in Kiev.

The New York Times has a nice article providing a bit more detail about these three types of radiation and other terms commonly associated with radiation.

How Much Radiation Is Dangerous?

It depends who you ask.  Some people will say no amount is safe, but that doesn’t really help us understand the relative dangers.  Here are some basic numbers to use as a guide (μSv means microSieverts):

10 μSv – The average radiation you received today

40 μSv – The radiation you receive by taking a flight from New York to L.A.

100 μSv – The radiation you receive during a dental x-ray

800 μSv – Total radiation dose at Three-Mile Island for the duration of the accident

3,000 μSv – Radiation dose from a mammogram

3,600 μSv – Average radiation a US citizen receives in a year from all sources

50,000 μSv – Maximum allowable yearly occupational dose (USA)

100,000 μSv – Lowest yearly dose likely linked to increased cancer risk

2,000,000 μSv – Severe radiation poisoning (sometimes fatal)

So How Dangerous Are The Levels In Japan?

The short answer is, not very, unless you are close to the Fukushima plant.  Keeping the standards described above in mind, let’s examine this map of radiation levels in Japan.

Tokyo usually has a background radiation level of .04 μSv/h.  On April 5, the level was .12 μSv/h.  That’s more than double, but is it dangerous?  The short answer is no.  If we multiply .12 by the number of hours in a year (about 8766) we see that a Tokyo resident would receive about 1,052 μSv of radiation a year at current levels.  That is about 2% of the amount that the USA allows workers to receive on the job, or about a third of the amount the average American receives per year from all sources.

This is not meant to downplay that risks at the Japanese plant.  As Chernobyl showed us, this is a technology that can quickly escape our control and cause massive devastation.  However, while many areas in japan are experiencing radiation levels above the normal background level, the levels in most place are not likely dangerous.

What About Near the Fukushima Plant?

On April 6, the radiation level in the city of Fukushima was 13.9 μSv/h.  If we multiply that number by the number of hours in a year, the yearly radiation dose is about 122,000 μSv.  This number is more concerning.  Remember, the U.S. does not allow workers to receive more than 50,000 μSv per year at work.

We do know that several Fukushima staff members and firefighters have been exposed to dangerous levels of radiation.  At least six staffers were exposed to radiation levels greater than 100,000 μSv (potentially increasing their risk of cancer).  At least 50 firefighters received doses of 27,000 μSv.

So How Does Fukushima Compare with Chernobyl?

The level of radiation detected at the Fukushima plant immediately after the third explosion was 400,000 μSv/h–a level that  would be extraordinarily dangerous for humans.  By comparison, that level of radiation is 33,000 times higher than we recorded about 750 yards from the containment facility at reactor 4 in Chernobyl.  Of course, Chernobyl happened 25 years ago and has a cement sarcophagus over it.

It is still too early to speculate on the lasting dangers created by the disaster at the Fukushima plant.  Like Chernobyl, it is likely that an exclusionary zone will be created around the plant, and that some residents who lived nearby will never return home.

If you would like to learn more about radiation risks and scientific disputes on the issue, check out the following New York Times article titled Radiation Is Everywhere, But How To Rate Harm.

Again, we recommend watching the documentary The Battle of Chernobyl.  It details the incredible circumstances that followed the Chernobyl accident, and the unbelievable sacrifices made to prevent a much larger disaster.

And Finally, More Photos from the Chernobyl Exclusion Zone

See the April 4 post below for the complete virtual tour.


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Virtual Tour of Chernobyl

Is nuclear power on your mind? Us too. As part of a site assessment trip to Ukraine, Blacksmith staff and technical advisers visited the world’s worst nuclear disaster site. On April 26, 1986, a series of explosions occurred at the Chernobyl Nuclear Power Plant sending a plume of radioactive smoke into the atmosphere. As a result of the accident, over 300,000 people were evacuated from areas of Ukraine, Russia and Belarus. Now, almost 25 years to the day after that accident, we will take you on a tour of the abandoned city of Pripyat and describe the legacy of this disaster.

On April 2nd, members of Blacksmith Institute’s staff visited the 19 mile wide Chernobyl Exclusion Zone that was evacuated in the days after the explosion.  Access to the area is still tightly controlled.

From left: Oleksii Vedmidskyi, Ira May, Drew McCartor

The Exclusion Zone lies about two hours north of Kiev by car.  Before leaving our hotel, we recorded the background level of radiation in Kiev.  Using a Geiger counter to measure three types of radiation (alpha, beta, and gamma), we recorded a total radiation level of .22 microsieverts per hour (μSv/h).  For comparison, this is approximately the same level we recorded in Blacksmith’s New York office.  Use this handy chart to understand common exposure levels in microsieverts and there corresponding danger.

Radiation level at breakfast in our hotel in Kiev, Ukraine.

On our bus ride from Kiev to the Exclusion Zone, we watched a fascinating documentary called Battle of Chernobyl, that describes the months of work by over 500,000 people to contain the fallout and prevent a second explosion that would have wiped out nearly half of Western Europe.  See that video here.

As you leave Kiev, the scenery becomes bleak quickly.  The area between Kiev and Chernobyl is largely agricultural, and the road is dotted with small farming towns that appear economically depressed.  After two hours you reach the Chernobyl Exclusion Zone and pass through the first of two strictly controlled checkpoints.  The Exclusion Zone is the area from which all 50,000 residents were evacuated on April 27, 1986, the day after the explosion at the Chernobyl Nuclear Plant.

Our group of 25 appeared to be the only tour entering the Exclusion Zone that day.

The outer checkpoint at the edge of the Exclusion Zone

Radiation levels at the edge of the exclusion zone were approx. equal to Kiev and New York.

One the way into the Exclusion Zone, the checkpoints are used to record passport information and create a log of who has entered the Exclusion Zone.  On the way out, they are used to scan your body for radiation exposure.  The radiation levels at the first checkpoint were approximately the same as in our hotel in Kiev.  Our Geiger counter read 0.13 μSv/h.

The scenery begins to look eerie after entering the first checkpoint.  The road into the Exclusion Zone is lined with forests on either side, but when you look deep into the trees you can see that there are abandoned houses deep in the forest.  It becomes clear that the forest has reclaimed entire neighborhoods.

Abandoned buildings reclaimed by forest on the road into the Exclusion Zone

Our first stop within the exclusion zone was in the little town where the 3,500 engineers, scientists and military officials that work and live in the exclusion zone reside.  We entered a small museum where we were shown maps of where the radiation had migrated (with our location as the epicenter) and then were asked to sign a health liability waiver.

Map of radiation exposure after initial blast

The next stop was a field that had several military vehicles that were used in the weeks following the explosion.  Each vehicle had a radiation sign next to it and our guide told us not to touch the vehicles because they were still “hot.”  The Geiger counter read 2.72 μSv/h next to the treads of one tank, roughly 20 times the level at the first checkpoint.  However, spending an hour next to this tank at this level of radiation still exposed us to only 6% of the radiation we were exposed to just by flying to Ukraine (proximity to the sun when flying is a common source of mild radiation exposure).

Vehicle used in the area after the explosion at reactor #4

Radiation level of tank treads holding radioactive soil (2.72)

Just behind this field there was a neighborhood of abandoned houses.  When our military escort was not looking, I (Drew) was able to sneak off and examine some of those houses.  The houses were mostly bare except for gas masks littered around the floors.

Gas mask in abandoned house

Gas mask in abandon house

Radiation reading of .59 microsieverts per hour (fairly low)

Moving closer the actual nuclear plant, the levels on our Geiger counter began rise.  Chernobyl has six nuclear reactors.  Reactor four was the one that had the explosion and meltdown.  Reactor four is currently contained in a shelter built in the months following the accident.  The shelter was designed to last approximately 30 years.  This year, the shelter will be 25 years old.

Our bus finally stopped surprisingly close to reactor four, perhaps 500-1000 yards away.  After watching a documentary on the bus about the limitations of the containment facility, it felt a bit too close.  Standing near the reactor, the Geiger counter read 12.4 μSv/h, nearly 100 times the level we recorded at the first checkpoint, and 100 times the average background levels in Kiev and New York.  Risks from radiation exposure are a function of the radiation level and the duration of time spent exposed.  Although the levels near reactor 4 were 100 time higher than background levels, we were only there for 15 minutes and were not in danger (although I would not have wanted to be our guide).  Review the radiation chart again.  In reality, we were probably exposed to more radiation in our flight to Ukraine than in our visit to Chernobyl.

Side view of reactor #4 (radiation containment sarcophagus on right half)

Frontal view of reactor #4 containment sarcophagus

Gieger counter reading 12.4 uSv/h

After visiting reactor four, we were treated to a lunch in the cafeteria used by Chernobyl workers.  The cafeteria was situated directly between reactors four and six.  Although the Geiger counter recorded relatively low levels of radiation, it was an odd feeling to eat anything prepared so close to these reactors.  I will say, however, that the Borscht was quite nice!

Lunch between reactors 4 and 6 (Gieger counter reads 0.22, not 8.22)

The next stop was the ghost city of Pripyat, located very close to the nuclear facility.  This was the most remarkable and eerie part of the visit.  Residents of the city did not hear about he accident until a full day after the explosion that sent a radiation plume over the entire area.  When the roughly 48,000 residents did learn of the danger, they were given two hours to pack a few belongings and leave their homes forever.  Today, nature has taken back much of the land, and the city looks like the set of a horror movie (think 28 Days Later or any kind of mutant/zombie movie).  The pictures of Pripyat speak for themselves.

Outside the community center and gym

Inside the gym

Swimming pool

Swimming pool

The most difficult part of the visit was the elementary school.  The school appeared to have been abandoned mid-day.  Supplies and schoolwork were littered along amongst the broken glass and gas masks.

Elementary school classroom

Elementary school music classroom

Music classroom

Elementary school hallway

Geography classroom

Geography classroom

After visiting the elementary school, we went into the cultural center that had been opened just months before the disaster.

Mural in the cultural center

The greenroom behind the stage in the cultural center

Negatives found in greenroom

Negatives

The negatives show men in hard hats during the construction of the cultural center

Indoor soccer complex in cultural center - view of amusement park

Indoor soccer complex

Amusement park in the center of the city

The highest levels of radiation we observed at Chernobyl were at the amusement park

amusement park

Mural on the wall of the cultural center

This post will be updated with more information about radiation and comparisons to Japan’s disaster in the coming days.  Visit the blog again soon to learn more.  Keep up with more Blacksmith news by liking “Like” at Blacksmith’s facebook page.  If you are interested in learning about the unbelievable response in the months after this disaster, don’t forget to view The Battle of Chernobyl.

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