Liquid wastes have generally high volumes and low levels of radioactivity. They are further classified as short lived and long lived wastes.
Low level nuclear waste usually includes material used to handle the highly radioactive parts of nuclear reactors (i.e. cooling water pipes and radiation suits) and waste from medical procedures involving radioactive treatments or x-rays.
Significant quantum of solid LIL wastes of diverse nature gets generated in different nuclear installations. They are essentially of two types-
- Primary wastes- comprising of radioactively contaminated equipment (metallic hardware) spent radiation sources etc.
- Secondary wastes- resulting from different operational activities, protective rubber and plastic wears, cellulosic and fibrous material, organic ion exchange resins filter cartridges and others.
The air in the working area and the environment is free from radioactive contamination. The off gas ventilation system in nuclear power plants play an important role in ensuring clean air.