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Comment Professional Sabotage (Score 1) 248

All the report says is that a nuclear engineer onboard could intentionally cause a meltdown. This is hardly salacious, anyone familiar with nuclear training programs would know that the training given to such engineers on cross-disciplinary systems and specific safeguards guarantees that an intelligent nuclear engineer onboard could disable the safety systems preventing overpower or prompt criticality. There are sufficient safeguards in place to prevent a rogue agent from significantly damaging a military reactor. The watchstanding and operations systems of military reactors and nuclear weapons control systems were designed to prevent serious damage by Soviet agents, and these systems will protect against the "rogue sailor."

Comment Re:Not really (Score 1) 327

This phenomenon is totally unrelated to depressurizing from a pressurized atmosphere, such as diving. The mechanism of the bends is dissolved gas coming out of solution in the body. The mechanism in this case is the rapid movement into an environment with a very low partial pressure of oxygen. Climbers of high peaks slowly acclimate to the elevation, thus giving the body time to physiologically adapt to the harsh conditions. Believe what you want, if you were dropped out of a helicopter onto the top of Everest, you'd be brain dead in 5 minutes. Any high-elevation climber will tell you the same thing.

Comment Re:Can be safe, but safety engineering is hard (Score 1) 1148

The radioactive steam must be vented as part of the cooling process. The primary coolant becomes saturated, therefore its temperature becomes a function of pressure in the system. As steam is generated from boiling water in the core, pressure rises, and the ability to pump water into the reactor plant is degraded and eventually made impossible, also overpressure can eventually cause structural failure of the primary and consequent radioactivity release. The recirculation cooling system would remove the necessity to vent the gas, but was incapacitated due to the beyond design basis tsunami.

Comment Re:Godzilla (Score 1) 1148

I am not anti-nuclear, but this is not factual. Nuclear primary components experience fatigue like all structural metallic components, are exposed to great stresses during thermal cycles, and toughness degrades as D*t increases over core life. They can be operated for great lengths of time, but are not designed to last indefinitely, and can not be expected to.

Comment Re:Seems just as safe as ever... (Score 1) 1148

"There has been some speculation that, if the used fuel pool were completely drained, the zirconium cladding might ignite and a “zirconium fire” might occur. Studies performed by the Department of Energy indicate that is virtually impossible to ignite zirconium tubing."
http://resources.nei.org/documents/japan/Used_Fuel_Pools_Key_Facts.pdf

Comment Re:Awesome! and effective (Score 1) 284

The energy necessary to vaporize a gram of tissue is still enormous.
A taser and a destructive laser are similar in that they are not guns, but it ends there.
Laser weapons for use against infantry are violations of the laws of war.
The US military has operational advanced laser weapons. http://en.wikipedia.org/wiki/Airborne_Laser
Laser weapons are advertised and marketed in international arms markets, you just don't see the ads in your sunday paper.

Comment Re:Like Robert McNamara (Score 1) 274

Well here is Robert McNamara's answer: http://en.wikipedia.org/wiki/The_Fog_of_War :
The documentary's lessons-learned concept is McNamara's eleven-lesson list of In Retrospect: The Tragedy and Lessons of Vietnam (1995).
We misjudged then — and we have since — the geopolitical intentions of our adversaries and we exaggerated the dangers to the United States of their actions.
We viewed the people and leaders of South Vietnam in terms of our own experience
We totally misjudged the political forces within the country.
We underestimated the power of nationalism to motivate a people to fight and die for their beliefs and values.
Our misjudgments of friend and foe, alike, reflected our profound ignorance of the history, culture, and politics of the people in the area, and the personalities and habits of their leaders.
We failed then — and have since — to recognize the limitations of modern, high-technology military equipment, forces, and doctrine.
We failed, as well, to adapt our military tactics to the task of winning the hearts and minds of people from a totally different culture.
We failed to draw Congress and the American people into a full and frank discussion and debate of the pros and cons of a large-scale military involvement before we initiated the action.
After the action got under way, and unanticipated events forced us off our planned course we did not fully explain what was happening, and why we were doing what we did.
We did not recognize that neither our people nor our leaders are omniscient. Our judgment of what is in another people's or country's best interest should be put to the test of open discussion in international forums.
We do not have the God-given right to shape every nation in our image or as we choose.
We did not hold to the principle that U.S. military action should be carried out only in conjunction with multinational forces supported fully (and not merely cosmetically) by the international community.
We failed to recognize that in international affairs, as in other aspects of life, there may be problems for which there are no immediate solutions At times, we may have to live with an imperfect, untidy world.
Underlying many of these errors lay our failure to organize the top echelons of the executive branch to deal effectively with the extraordinarily complex range of political and military issues.

Comment Re:In the suicide-bombing age... (Score 1) 274

I don't think that it is at all unclear what "international opinion" is on the proliferation of tactical nuclear weapons. Tactical nuclear weapons present a much more severe threat to global peace for the very fact that they are less powerful and potentially more likely to be used.
Just because a nuclear weapon is small does not decrease the required technical sophistication of building an unboosted fission weapon. The manufacturing and engineering sophistication of 1950's nuclear weapons designs is still high enough that only nation states are capable of mustering the resources necessary to produce one. SNM smuggling is relatively common but that does not mean that an extra-national group has come close to acquiring such a weapon. There are no deployed micro-nukes in existence anymore and weapons as old as you mention such as the davy crockett and SADM surely have poisoned pits by now if they have not been recycled.
Just because you don't have a launch signature does not mean attribution cannot be made as to the source of the fissile material.
Rocket technology may be relatively widespread but any BM production program requires testing and these missiles have such a spectacular IR signature that satellite reconnaissance picks the event up. (in addition to the spy planes that are already waiting on a tip from the CIA)

Comment Re:If you support democracy, leave Libya alone (Score 1) 463

Here's the transposition: bombing Qadafi is an act of war against tyrannical egomaniacal murderous Afro-Liberace dictators.
Is it good for the world that Qadafi is in the process of sabotaging Libya's oil export facilities? Economic turmoil is not good for the Libyans or the oil-consuming first world, and sooner or later this murderer's body is getting dragged through the street, whether after being killed by Libyan partisans or a B-2. This guy is having his people machinegunned in the streets, and the Libyan international diplomatic corps has all defected and is seeking international assistance to depose him. The arab world is not going to view Qadafi being killed as the same as the US bombing hospitals.

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