Nuclear
U.N. calls for nuclear disarmament
by Neutron on Sep.24, 2009, under Defense, News, Nuclear
Finally, someone said it out loud and is getting everyone riled up on the idea of a world without nuclear weapons. Here’s the article. This is one of those things that might alleviate a lot of concerns for people in the proliferation policy realm but I think it is ineffective and serves a moot point on giving us a false sense of security that the world is safer, even if all the nukes are disarmed.
Why you ask ? Because we are humans. And unlearning physics that is a simple extension of a much more helpful application, i.e., the generation of power from reactors, is quite hard. In fact to quote from the article,
Chinese President Hu Jintao made clear that Beijing had no plans to scrap its nuclear arsenal.
“We will continue to keep our nuclear capabilities at the minimum level required for national security, and make efforts to advance the international disarmament process,” Hu said.
If every country that already has nukes takes a similar stance, and by suggesting arbitrarily that “we will keep our nuclear capabilities at the minimum level required for national security”, there is still reason for countries that want to get in to building nukes to get a nuclear status and respect from fear. And yes, I’m talking about North Korea, Iran and may be Brazil specifically.
But we strive, and that is probably a good thing. At least, we are heading in the right direction…
A.Q. Khan on Pakistan’s Nuclear Program
by Neutron on Sep.22, 2009, under Defense, News, Nuclear, People, Research
I just came across a very interesting and revealing interview with A.Q. Khan who was on house arrest till early February this year for his involvement in organizing one of history’s worst nuclear scandals. The transcript of the interview is available over here and is worth the time in gaining insight on the dynamics, timelines and even the budget involved for Pakistan’s nuclear program.
[Malik] When did you come to believe that now you had the weapons-grade uranium?
[Khan] In Kahuta, we achieved 60 percent result in our enrichment program; it was a
very difficult task though. We faced a lot of challenges in the ensuing stages but
successfully managed to overcome them, and we had achieved 90 percent result in the
//enrichment// program by the early 1983.[Malik] So when was the bomb ready?
[Khan] It was ready by 1984. I wrote a letter to Gen Zia on 10 December 1984, telling
him that the weapon was ready and that we could detonate it on a notice of one week.[Malik] Why did you not decide to test that device as soon as it was ready?
[Khan] We were allying with the United States in the Afghan war. The aid was coming.
We asked Gen Zia and his team to go ahead with the test, but they said they could not
conduct the test as it would have serious repercussions. They argued that, since the
United States had to overlook our nuclear program due to our support in the Afghan
war, it was an opportunity for us to further develop the program. They said the tests
could be conducted any time later.
Even though there is no value in pointing fingers at anybody, it is horrifying that repercussions of the US involvement in the Afghan region is still coming back to bite everyone, US included, in diabolical ways. Read the rest of the transcript to get a better perspective on things.
Link to the transcript in PDF via Secrecy News.
More dirty jobs, in science
by Neutron on Apr.17, 2009, under Cool, Nuclear, Trivia
I am a big fan of Mike Rowe, from the “Dirty Jobs” fame and have a fascination to really weird jobs that people have to do, every day, while I sit here in front of my computer, complaining about the compiler spewing out unrecognizable error messages, in a nice air-conditioned room, with a cup of hot coffee by my side. Of course, people do these jobs, not because they entirely like it but most times, these jobs are so specialized that the bang for the buck is usually high. This might particularly true for the weird jobs you encounter in scientific fields.
And yes, all that rant does lead to something sensible. I stumbled on to this video with a description by the assistant editor of Popular Science Magazine. He lists a few of these kooky professions and what it takes in a honest day’s work. Watch it below.
And I remembered, during one of my tours of a nuclear power plant, someone mentioned how they had a problem in one of their spent nuclear pools and a nuclear pool diver came to the rescue to set things straight. I was of course, baffled by this whole idea of a human being submerged in such a hostile environment but later realized, this was another one of those “on a need to do” professional occupations. Here’s are couple of sites that gives more information about the the nuclear divers.
1) Life of a Nuclear Diver.
2) Nuclear Divers, A Definite Breed
3) And to end this post, another great video of a dive walk through inside the Phenix nuclear plant, in France. The audio is in French but the video is worth a thousand words.
Very interesting and that is just way too cool for words !
Revisiting Three Mile Island
by Neutron on Apr.06, 2009, under Disaster, Educational, Nuclear
An enlightening post that revisits some of the mistakes that caused the TMI accident, on the 30th anniversary of the mishap. I have heard some of the details from couple of professors on Nuclear Reactor Safety and they have always claimed it TMI to be an ‘accident gone right’ because there was absolutely minimal radiation exposure to the environment and pales in comparison to Chernobyl where the whole thing was a shitty mess.
I especially like Bob’s extrapolation on the current state of affairs:
The folks at TMI did not really know how to manage the technology of a nuclear power plant, and that led to a huge mess. The same thing has now happened to our economy. Congress changed the banking and mortgage lending rules without regard to their purpose. Many firms bought derivative securities without the slightest thought to the math behind them or the risk they were incurring. Nuclear power plants run on a chain reaction process of atomic decay. Our government and investment community created a chain reaction of economic decay.
Anyway, since it is the 30th anniversary of TMI, I figured that it would be wise to educate the one or two readers following my site. So here, read up.
Also, if you feel like reading more in-depth, check out the TMI fact-sheet at the NRC website TMI Fact sheet
Note to self: Got to watch ‘The China Syndrome’ soon. I keep reading about it over and over to the extent that it is annoying the hell out of me…
China moving forward with AP1000 reactors
by Neutron on Mar.13, 2009, under News, Nuclear
This is good news. I know that the NRC in the USA are already working on getting site licenses approved for the AP1000 reactors and this is a welcome move that should spark more interest in this Westinghouse design.
There are also several more designs apparently being planned for construction in China, in the near future. An excerpt from World-Nuclear-News:
The AP1000 is to be one of two designs built en-masse in China. The other is the CPR-1000, itself derived from French reactors imported for the Daya Bay nuclear power plant in the 1980s. China has a range of power reactors including Candu-6s from Atomic Energy of Canada Ltd and VVER-1000s from AtomStroyExport. Two Areva EPRs are planned, as are two more VVER-1000s.
China Fires up Construction of the First of Many AP1000 nuclear reactors.
At 20 Petaflops, a new beast.
by Neutron on Feb.03, 2009, under Computers, Nuclear
Read about the new beast on the block for simulating nuclear explosions and to take predictive science to whole new levels. Here comes Sequoia, to be installed at Lawrence Livermore National Lab.

Read more here: I See Your Petaflop and Raise You 19 More.
Atomic John
by Neutron on Jan.26, 2009, under Gadgets, History, Nuclear, People, Research
There has been quite a furore about an unknown truck driver delivering a thorough account of the first 2 nuclear bombs ever built on the face of the earth. Intrigued and excited, I searched google to read more about him and stumbled on this gem of an interview/article that brought him to light.
Read David Samuels’s account about the truck driver, John Coster-Mullen, who conducted more than a decade of research to successfully build the first accurate replica of Little-Boy, the master-blaster that annihilated Hiroshima, ending WWII. The article itself is quite interesting and leaves you wanting for more. Here’s an excerpt:
I recently wrote to Coster-Mullen and suggested that we take a trip across the country to visit his Little Boy replica, which is currently housed at Wendover, a decommissioned Air Force base in Utah. After some negotiation, we agreed to ride together on his late-night delivery route between Waukesha and Chicago. We would then drive to Wendover. Along the way, he would explain the inner workings of the first atomic bombs, and I would learn how he got it right and the experts got it wrong.
I can’t wait to get my hands on the his book “Atom Bombs: The Top Secret Inside Story of Little Boy and Fat Man”.
Toshiba builds 100x smaller Micro Nuclear Reactor : A hoax
by Neutron on Jan.27, 2008, under News, Nuclear
It is interesting enough following through the new developments in the nuclear industry with innovative GEN4 reactors sprouting out concepts little explored before. But then again, there is nothing like a hoax that seems very genuine from one of the biggest heads in the nuclear industry. Here’s an excerpt.
A blog called Next Energy News leaks a story about Toshiba building a “Micro Nuclear Reactor” that would be nothing short of a miracle.
The 200 kilowatt Toshiba designed reactor is engineered to be fail-safe and totally automatic and will not overheat. Unlike traditional nuclear reactors the new micro reactor uses no control rods to initiate the reaction. The new revolutionary technology uses reservoirs of liquid lithium-6, an isotope that is effective at absorbing neutrons. The Lithium-6 reservoirs are connected to a vertical tube that fits into the reactor core. The whole whole process is self sustaining and can last for up to 40 years, producing electricity for only 5 cents per kilowatt hour, about half the cost of grid energy.
via Gadgets-Weblog
Sad that this news was a hoax but in reality, if such a design were to be made in a feasible manner, this could be wonderful in lieu of the growing concerns on global warming and move towards greener energy. Well, it still would create new problems in the nuclear non-proliferation regime but lets deal with this one step at a time.
The new Russian bomb
by Neutron on Sep.13, 2007, under Defense, News, Nuclear, Research
I am sure you’ve heard the news already and seen the video of the explosion a million times. That is unless you are living under a rock. The new bomb is supposed to be completely free of nuclear materials but still delivers the “boom” that would be expected of a nuclear device. Quite interesting and a little scary considering that Putin has been sacking and shuffling his cabinet recently to fit the profile he wants. Is this an attempt by Putin to bring Russia back into a state of global power ? Time will tell.
Anyway, without diverging further, let me give you an excerpt from an article on the new Russian test. From CNN
The Russian military has successfully tested what it described as the world’s most powerful non-nuclear air-delivered bomb, Russia’s state television reported Tuesday.
The bomb’s detonation is shown in this image taken from videotape.
It was the latest show of Russia’s military muscle amid chilly relations with the United States.
Channel One television said the new weapon, nicknamed the “dad of all bombs” is four times more powerful than the U.S. “mother of all bombs.”
“The tests have shown that the new air-delivered ordnance is comparable to a nuclear weapon in its efficiency and capability,” said Col.-Gen. Alexander Rukshin, a deputy chief of the Russian military’s General Staff, said in televised remarks. Video Watch Russian bomb test »
Unlike a nuclear weapon, the bomb doesn’t hurt the environment, he added.
<sarcasm>YESSS ! It doesn’t hurt the environment ! That should keep the global warming fanatics quiet. You showed them Russia. Way to go.</sarcasm>
Retards.
Btw, also found a nice video of the test, an official release from the Russian government. I should say, the mushroom clouds get me all tingly every time I see it on video. Let’s hope I’ll never have to see that in person during my life !!
Plutonium ?! What do i do with it
by Neutron on Dec.08, 2005, under Disaster, News, Nuclear
The topic : “Terrorist Has No Idea What To Do With All This Plutonium”.
Yaquub Akhtar, the leader of an eight-man cell linked to a terrorist organization known as the Army Of Martyrs, admitted Tuesday that he “doesn’t have the slightest clue” what to do with the quarter-kilogram of plutonium he recently acquired.“We had just given thanks to Allah for this glorious means to destroy the Great Satan once and for all, when [sub-lieutenant] Mahmoud [Ghassan] asked, ‘So, what’s the next step?’” Akhtar said. “I was at a loss.”
The 28-year-old fanatic said he and his associates had initially assumed that at least one member of their group had the physics and engineering background necessary to construct a thermonuclear device.
“Many eyes were upon me,” said Basim Aljawad, whose knowledge of physics did not extend to the principles of nuclear fission. “I make nail bombs. That’s it.”
My 2 cents of opinion on it : It is bloody funny and terribly scary. Funny because i can’t believe that someone had the means to get a raw material for a potential weapon and still do not have a clue on what to do with it. Scary because, obtaining plutonium, for motivated terrorists seems easy.
“I still believe in taking the lives of American civilians as revenge for the atrocities committed on our brothers, our wives, and our daughters,” Akhtar said. “I’m just not entirely sure it’s worth a headache this big.”
It is really sad to see such intense hatred against any nation, whoever it might be. On top of that, when such people also have the means to fulfill their wishes, the world doesn’t seem that safe anymore.
At last, i passed’em all !
by Neutron on Oct.21, 2005, under Musings, Nuclear, Personal
Next, i am completely disappointed with the way i performed today. Eventhough, i am sure that my prof would have argued in favor of me, i feel disgusted with the way i stared blankly for some of the questions – some because i couldn’t remember and some because i couldn’t understand the russian accent of another prof. I definitely didn’t blurt out everything i knew and made myself look like an unprepared idiot. Overall, i did much worse than i could have possibly imagined.
Ironically i did pass and now i do not know how to feel. Am i supposed to feel bad about how i flunked this or am i supposed to feel happy that i did manage to pass.
Either way, i am out of here to get a drink.
Not quite a PhD candidate yet
by Neutron on Oct.18, 2005, under Musings, Nuclear, Personal
Hopefully, all the drinking after the written qualifier results hasn’t eaten away my gray cells to an irreparable extent. Well, gotta go and read more and start preparing for the test more seriously. Other than that, just the usual things : research, coding, classes, assignments and presentations.
Will chip in again with a post on Friday to write about the oral experience
Until then, adios amigos.
Nuclear Plant Has Flaw Undetected for 19 Years
by Neutron on Oct.16, 2005, under Links, News, Nuclear
This is scary at first sight.Excerpt from the article
A potential problem with the emergency reactor core cooling system at the nation’s largest nuclear power plant went undetected from 1986, when it began producing power, until last week, the Nuclear Regulatory Commission(NRC) and the plant operator confirmed Thursday.
The issue was identified when engineers at the Palo Verde Nuclear Generating Station did an analysis after NRC inspectors raised questions at a detailed inspection early last week. The NRC was following up to see if earlier cooling system problems had been fixed.
The review showed the emergency cooling system may not operate as expected to provide water to reactor cores after a small leak in the reactor cooling lines, NRC spokesman Victor Dricks said.
Practically, for this flaw to lead to any kind of disatrous results, lots of redundant safety systems need to fail together. Well, i am not refuting the fact that such an incident could have happened anytime in the past 19 years of its operation but chances for a complete failure and a meltdown are slim. Nevertheless, this is definitely a serious issue and hopefully, the NRC will bring in a stricter system to check all the flaws in all operating reactors.
God, i dont even want to begin to imagine what the media fuss will be, on all this.
Hot new fuel for nuclear reactors
by Neutron on Oct.13, 2005, under Nuclear, Research
First, you have the reactor core, loaded with nuclear fuel. Neutrons induce fission in a fuel element and once a fission occurs, it releases 2-3 more neutrons. If you can capture those fission neutrons and induce more fission, you end up with a sustaining chain reaction.
Now each fission reaction releases about 200 Mev of energy. That’s exactly 3.204E-11 Joules. That’s freakin miniscule but when we have enriched uranium with atomic densities > 1E22(btw, this is normal. Parallel : 1Kg of H2 has 6E23 atoms !), you could end up with net energies of about 3E11 J/s. This energy conducts out from the fuel, since there is a coolant flow in the core outside the pellet. Depending on the coolant’s heat capacity, some amount of heat is carried away by the coolant to the turbines, where with an awesome 30% efficiency, the heat is converted to power !
And that is a short gist of how Nuclear power is produced.
Now, back to my post. Here’s an article i read at NS. Look what it says below.
A Fuel pellet that is 50 per cent better at conducting heat will make nuclear power cheaper and more efficient, its developers claim.Engineers from Purdue University in West Lafayette, Indiana, added beryllium oxide to the standard uranium oxide pellets used in light water reactors. Because uranium oxide does not conduct heat well, pellets made of it tend to crack and degrade as the temperature of the reactor core rises and falls, and this means they have to be replaced before all the fuel has been used. Beryllium oxide is a better conductor of heat, so it allows the fuel pellet to cool more efficiently, says Alvin Solomon, who led the research. This means the combined pellet lasts much longer than the standard one.
This would mean a higher heat conduction out of the fuel to the coolant. If we use good coolants, like liquid metals, then we could extract more heat out and generate more power as a result. Since we are energy greedy beings by nature, this research has great value and potential in reducing the energy craving !
Super-efficient N-reactors
by Neutron on Oct.09, 2005, under Nuclear, Research
Chinese scientists are planning to build super-efficient nuclear reactors by 2010 that can maximise uranium burn-up, minimise waste while quenching the energy crunch facing the communist giant.
If the first experimental reactor, set to be in operation by 2010, is successful, the technology could help relieve China’s uranium supply problems as the country accelerates nuclear power plant construction.
China Academy of Atomic Science President Zhao Zhixiang said a team of scientists has already mapped a detailed plan to speed up research and utilisation of the so-called next-generation fast reactors.
The new reactors are expected to burn 60-70 per cent of their uranium fuel — a conventional reactor consumes only 0.7 per cent of the uranium it is fed.
“This kind of reactor can greatly improve the efficiency of fuel burn-up, and we are trying our best to put the experimental reactor into use over the next five years,” Zhao was quoted as saying by China Daily.
Current reactors are only able to harness the power of 0.7 per cent of the radioactive isotopes found in natural uranium.
In the fast reactor, the process is optimised so that more of the previously untapped isotopes can be used to generate electricity, burning-up fuel at least 60 times more efficiently than in a normal reactor.
-Cool. Now i wonder what kind of reactors would that be ?! Even the chinese guy in my department didn’t have any idea about this but hey if this works, another thumbs up for Nuke power !