Chapter 2 Requirements on Final Disposal of Low level Waste
Article 3
According to the concentration of the radioactive nuclides, low level waste is classified as follows:
1.Class A waste: refers to the low level waste the concentration of nuclides of which is not higher than 1/10 of the concentration value in the Annexed Table 1 and not higher than the concentration value in the column 1 of the Annexed Table 2, or the nuclides contained in which are not listed in Annexed Tables 1 and 2.
2.Class B waste: refers to the low level waste the concentration of nuclides of which is higher than 1/10 of the value listed in the column 1 and not higher than that listed in the column 2 of the Annexed Table 2.
3.Class C waste: refers to the low level waste the concentration of nuclides of which is higher than 1/10 and not higher than the value in the Annexed Table 1, or higher than the value listed in the column 2 but not higher than that listed in the column 3 of the Annexed Table 2.
4.Greater than Class C waste: refers to the low level waste the concentration of nuclides of which is higher than the value in the Annexed Table 1, or higher than the value in the column 3 of the Annexed Table 2.
Article 4
The final disposal of low level waste shall meet the following provisions:
1.Class A waste shall meet the provisions of Article 5. Where Class A waste is disposed together with Class B or C waste, the relevant provisions for Class B or C waste shall be observed.
2.Solidifying & packing shall be performed for Class B waste, and the waste shall meet the provisions of both Article 5 and Article 6. Where Class B waste is disposed together with Class C waste, the relevant provisions for Class C waste shall be observed.
3.Solidifying & packing shall be performed for Class C waste, and the waste shall meet the provisions of both Article 5 and Article 6. Additionally, the engineering design of the disposal area shall be strengthened to ensure the safety of those inadvertent intruders after institutional control period.
4.Grater than Class C waste may not be disposed in the low level disposal facilities waste unless it is approved by the competent authority.
Not suitable for solidifying or disqualified solidified Class A waste shall be packed in the competent authority approved container which design life can maintain its structural integrity in at least one hundred years or emplaced in the repository’s engineering barriers which has the same function of integrity or disposed by the competent authority approved method for disposal.
Not suitable for solidifying or disqualified solidified Class B and C waste shall be packed in the competent authority approved high-integrity container or disposed by the competent authority approved method for disposal.
Article 5
The waste of the low level disposal facilities shall meet the following provisions:
1.The volume of free standing water may not be more than 0.5% of the total volume.
2.Explosion will never occur under normal temperature and normal pressure.
3.Fire endurance shall be provided.
4.No toxic, corrosive or infectious substance is contained.
5.No harmful toxic gas, steam or fume is contained or will be produced.
Article 6
The homogeneous solidifying waste shall meet the following provisions:
1.Use the single-axis compression strength method to test the mechanical strength of cement-solidified or high-temperature melting waste which shall be more than 15kg/cm2; the mechanical strength of bituminous waste shall be measured by penetration test, and the value of penetration shall be less than 100.
2.The leaching index shall be greater than 6.
3.After the process of water resistance test, the provisions of Subparagraph 1 shall be observed.
4.After the process of weather resistance test, the provisions of Subparagraph 1 shall be observed.
5.After the process of radiation resistance test, the provisions of Subparagraphs 1 shall be observed.
6.After the process of bacteria-resistance test, the provisions of Subparagraph 1 shall be observed.
The items, methods, and standards of the tests referred to in the Subparagraphs 1, 3 of Article 5 and above Subparagraphs are shown in the Annexed Table 3.