The matrix of laws and regulation which were established by beginning of nuclear industry does not lend itself to uniform categorisation. Even if nuclear law is not completely self-ruling, as it takes account of norms governing other branches of law, it presents specificities and fluctuates from country to country. But, it results to an efficient regime of controls upon international nuclear trade to inhibit proliferation of nuclear armaments to an extensive regulation in the fields of radiation protection, nuclear safety and radioactive waste management to name but a few. The specificity of international aspects of the legal framework surrounding nuclear energy led to the drafting of a series of international conventions which both preceded and promoted the harmonisation of domestic legislation and regulations. Nuclear law is in a continuous move in order to adjust to the technological developments and to manage the questioning associated with their use.