Mdsolar
A viable manned mission requires a high ISP to avoid the high radiation in space. Slowly crawling to mars on a solar powered vasma or going quicker on a small nuclear power reactor I wonder what would workout best for crew. Nuclear is the future of deep space manned missions.
Coal contains a variety of contaminants including heavy metals, incomplete combustion of fuel including biomass produces PAH which are known or suspected carcinogens along with the pollution that fly ash causes to surface water or groundwater. In short clean coal is just less dirty then non clean coal.
People confuse radiation dose = cancer. But it does not work that way it is an increase over back ground cancer cases compared to a population that was not exposed. Highly active products are short lived the idea that we are leaving a highly radioactive waste for hundreds of thousands of years is not accurate.
Human health risk assessment is highly conservative and rightly so, we do not understand everything about dose response curves for simple contaminants such as single species metals let alone radiation. We do not live in a risk fee world, we every day take decisions on smoking, drinking or crossing the road. We accept those risks because we think we can control them but we as a society do not understand and accept risks presented to us by apparent outside forces. This is a failure on all of us.
I am sure you are not Implying that it is okay to spread coal ash radioactive or not but that was how you read for awhile. Fukushima is a terrible accident but the Japan government is in a no win scenario of there own making they miss led the world over the disaster and now there own people do not trust them over the risks which are likely to be a lot less then many people think as safe levels of radiation are highly conservative.
The way you led into the story implies that there is no water there is, it s not hot enough to melt on mass or eat through concrete at 50 degrees. You post so frequently on nuclear stories that you are starting to Sound like a astro turfer which I am sure you are not
Slashdot Mirror
Mdsolar A viable manned mission requires a high ISP to avoid the high radiation in space. Slowly crawling to mars on a solar powered vasma or going quicker on a small nuclear power reactor I wonder what would workout best for crew. Nuclear is the future of deep space manned missions. Coal contains a variety of contaminants including heavy metals, incomplete combustion of fuel including biomass produces PAH which are known or suspected carcinogens along with the pollution that fly ash causes to surface water or groundwater. In short clean coal is just less dirty then non clean coal. People confuse radiation dose = cancer. But it does not work that way it is an increase over back ground cancer cases compared to a population that was not exposed. Highly active products are short lived the idea that we are leaving a highly radioactive waste for hundreds of thousands of years is not accurate. Human health risk assessment is highly conservative and rightly so, we do not understand everything about dose response curves for simple contaminants such as single species metals let alone radiation. We do not live in a risk fee world, we every day take decisions on smoking, drinking or crossing the road. We accept those risks because we think we can control them but we as a society do not understand and accept risks presented to us by apparent outside forces. This is a failure on all of us. I am sure you are not Implying that it is okay to spread coal ash radioactive or not but that was how you read for awhile. Fukushima is a terrible accident but the Japan government is in a no win scenario of there own making they miss led the world over the disaster and now there own people do not trust them over the risks which are likely to be a lot less then many people think as safe levels of radiation are highly conservative. The way you led into the story implies that there is no water there is, it s not hot enough to melt on mass or eat through concrete at 50 degrees. You post so frequently on nuclear stories that you are starting to Sound like a astro turfer which I am sure you are not