Some countermeasures on marine nuclear accident emergency monitoring and environment assessment

The present status of marine nuclear accident emergency is discussed in the paper,with three significant threats to marine environment from nuclear and radioactive pollution,i.e.the coastal nuclear power plant/nuclear facilities leakage accident,the input offshore of exogenous nuclear pollution across borders,and maritime mobile/aviation aircraft accident of nuclear facilities.Finally,some countermeasures are given to help to perfect marine nuclear accident emergency monitoring and assessment and formulate emergency plans.