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Showing posts from October, 2017

Nuclear Waste Not Want Not

In today's post I'd like to discuss nuclear waste and its properties. Nuclear waste is often imagined as a sort of cartoony toxic green goo in large yellow barrels, but this is really not the case! In fact nuclear waste can exist in many forms and varieties. A quick screenshot of what turns up when I search 'nuclear waste' on Google Images The world loosely agrees on the three definitions for nuclear waste: Low level waste (LLW) Intermediate level waste (ILW) High level waste (HLW) LLW consists of of the least dangerous waste; things like paper, plastic and metal that has been used in hospitals, research establishments and certain aspects of the nuclear industry. Fun fact: in the UK LLW makes up 90% of the volume of nuclear waste but only <10% of the radioactivity ( UK White Paper on Nuclear Waste Disposal , 2014). ILW is defined as waste that exceeds the radioactivity boundaries of LLW, but is not so radioactive that heat is an iss...

A Beginner's guide to Nuclear Energy and it's Annoying Little Brother Nuclear Waste

In the late 19th to early 20th century, following a period of belief in the scientific community that very few fundamental principles of physics remained to be discovered came a series of (surprise surprise) discoveries of fundamental principles of physics. One of these was the famous equivalence of mass and energy: E=∆mc 2 . This finding led to another monumental discovery: nuclear fission . By which I mean the idea that a nucleus of certain heavy elements could be split in to two fragments through its capture of a neutron, a process which would then produce another 2-3 neutrons. This meant that in stocks of heavy elements large enough, a chain reaction could be sustained that importantly resulted in an end product lighter  than the original. This mass difference was accounted for in the form of nuclear energy . So what? The use of nuclear energy as a power source has some very important benefits. It's more economically viable than other forms of renewable energy becaus...