A waste barrel is coded with an N230 label. What type of restriction apply to this waste barrel when transported within NSW? 

Ash is a by-product of the combustion of substances. Researchers suggested using bottom ashes of different substances in concrete for construction purposes. If an industry produces ash from the combustion of Bagasse for construction applications, would you consider this ash to be waste or non-waste?

What are the measurable properties for chemical assessment of waste?

Which methods are usually suggested for immobilisation of radioactive waste? 

The vitrification method is suitable for a variety of wastes, what are the concerns about this method? 

A mixture of radionuclides of groups 1, 2, and 3 include an equal amount of radioisotopes from each group,  which possesses radioactivity of 10 kBq, 150 kBq, and 1 MBq respectively. Is this mixture defined as a radioactive substance? 

What is the equivalent dose that is received by a person who absorbed 30 mSv of alpha radiation by internal exposure?