Which of the following is a method for holding and decaying low-level liquid radioactive waste?

Tank storage is a method widely used for holding and decaying low-level liquid radioactive waste due to its ability to securely contain the waste while allowing for the management of its decay over time. This method typically involves the use of specially designed tanks that are resistant to corrosion and leakage, ensuring that the radioactive materials are safely isolated from the environment. The design of these tanks allows for monitoring of the waste, as well as the implementation of various safety measures to prevent accidents.

Tank storage also provides flexibility in terms of waste handling. The volume of waste can be adjusted, and waste can be treated to reduce radioactivity levels before eventual disposal, be it through evaporation or other methods. This controlled environment helps in ensuring that any potential radiation exposure is minimized both for the workforce handling the waste and for surrounding communities.

In contrast, composting is not applicable as it is a biological process meant for organic materials, and it does not address the handling of hazardous radioactive waste. Reservoir storage, while it could imply a broader storage concept, is not specifically oriented towards the containment and decay of radioactive materials, and typically implies a water body which doesn't offer the necessary containment or safety protocols. Deep well injection is primarily used for certain types of liquid waste but is generally associated with hazardous non