Re: [問卦] 核能 vs 火力發電消失

看板Gossiping作者czqs2000時間9年前 (2016/11/15 23:17)推噓13(13推 0噓 9→)

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八卦是你們不要以為火力發電廠是沒有輻射的，火力發電廠廢料的輻射可能比核廢料輻射更大。科學美國人雜志的研究： https://www.scientificamerican.com/article/coal-ash-is-more-radioactive-than- nuclear-waste/ Coal Ash Is More Radioactive Than Nuclear Waste （電廠燃燒后的）煤灰的輻射比核廢料的輻射更大原文我就不全翻了，摘出其中幾個要點： 1.In fact, the fly ash emitted by a power plant—a by-product from burning coal for electricity—carries into the surrounding environment 100 times more radiation than a nuclear power plant producing the same amount of energy. 實際上在生產出相同數量能量的情況下，燃燒煤時產生的副產品粉煤灰帶給周圍環境的放射性物質是核電站的100倍。 2.At issue is coal's content of uranium and thorium, both radioactive elements. They occur in such trace amounts in natural, or "whole," coal that they aren't a problem. But when coal is burned into fly ash, uranium and thorium are concentrated at up to 10 times their original levels. 有爭議的是煤中含有多少鈾和釷，兩者都是放射性元素。所有的，或者說天然的煤中都含有微量的鈾和釷，這本來不算什么問題，但是，當煤經過燃燒產生粉煤灰之后，它們的含量就會被濃縮為自然水平的10倍。 3.In a 1978 paper for Science, J. P. McBride at Oak Ridge National Laboratory (ORNL) and his colleagues looked at the uranium and thorium content of fly ash from coal-fired power plants in Tennessee and Alabama. To answer the question of just how harmful leaching could be, the scientists estimated radiation exposure around the coal plants and compared it with exposure levels around boiling-water reactor and pressurized-water nuclear power plants. 《科學》雜志1978年的一篇論文中，美國橡樹嶺國家實驗室的麥克布賴德（J.P.McBrid e）及其同事研究了田納西和亞拉巴馬州的燃煤火電廠產生的粉煤灰中鈾和釷的含量。為了搞清楚浸出作用的危害有多大，科學家對火電廠周圍的輻射進行了估算，并和核電廠使用的沸水反應器和壓水反應器周圍的輻射值做了對比。 The result: estimated radiation doses ingested by people living near the coal plants were equal to or higher than doses for people living around the nuclear facilities. At one extreme, the scientists estimated fly ash radiation in ind- ividuals' bones at around 18 millirems (thousandths of a rem, a unit for measuring doses of ionizing radiation) a year. Doses for the two nuclear plants, by contrast, ranged from between three and six millirems for the same period. And when all food was grown in the area, radiation doses were 50 to 200 percent higher around the coal plants. 結果：居住在火電廠附近的人吸收的輻射估算值與核設施附近的人水平相當，甚至會高于后者。在極端情形下，科學家估計粉煤灰對人骨造成的輻射每年約為18毫雷姆（即千分之一雷姆rem，這個單位用于測量電離輻射的量）。相比之下，沸水堆和壓水堆造成的輻射當量同比為3~6毫雷姆。所有生長在火電廠輻射區內的作物，其輻射當量比核電廠周圍的高出50%~200%。 ※ 引述《blackbottle (蘇格蘭威士忌)》之銘言： : 現在台灣最大能源是火力發電 : 但是現在煙霧那麼嚴重 : 好像核能比較有利 : 不過又會有核廢料 : 有沒有核廢料vs空氣汙染 : 大家選哪個的八卦？ -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 114.252.164.162 ※ 文章網址: https://www.ptt.cc/bbs/Gossiping/M.1479223050.A.CDF.html

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