Abstract: High Integrity Container (HIC) is a specifically designed and manufactured container having the following features: high intensity, high tightness, high chemical stability and high thermal stability for low and intermediate level waste disposial. Generally, HIC is categorized into macromolecule polymer container, inorganic cementing container, cast iron container and stainless steel container according to the container material. For the usage of HIC, radiation stability shall be considered as a key assessment index. This paper introduces an approximation method to calculate the accumulative dose and then accordingly to evaluate the accumulative dose of the HIC received during usage which used in the AP1000 nuclear power engineering. This method is proved to be conservative, partial security via Micro Shield and MCNP can be used for practical calculation method of the HIC's accumulative dose.

Key words: AP1000, radioactive waste, High Integrity Container, calculation method, accumulative dose