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Table 3 Natural analogue information categorized as SL-1 (suitability level 1) based on the evaluation of suitability for the Korean safety case

From: Development of a natural analogue database to support the safety case of the Korean radioactive waste disposal program

System

Components/processes

Application method

Properties/phenomena

EBS

Spent fuel

MV

Dissolution rate and processes of spent fuel

MV

Radiolysis effect on dissolution of spent fuel

DE

Criticality of spent fuel

UI

Formation and alteration of uranium minerals

Metal

ISP, MV, DE

Corrosion rate and corrosion products of copper

UI, DE

Durability and longevity of copper

ISP

Pitting factor of copper

MV, DE

Durability and longevity of iron

MV, UI, DE

Corrosion rate of iron

UI

Radionuclide retardation by corrosion products of iron

Bentonite

UI

Colloid filtration by bentonite

DE

Hydraulic barrier of bentonite

DE, UI

Interactions of bentonite with other materials

DE

Durability and longevity of bentonite

SD, UI

Alteration of bentonite

UI

Thermal alteration of bentonite

Concrete and cement

MV, UI

Interaction of cement with groundwater

UI

Interaction of cement with rocks

DE

Durability and longevity of cement and concrete

Host rock

Elemental solubility and speciation

MV

Calculation and measurement of solubility and speciation of RNs in groundwater

Elemental retardation

UI

Radionuclide mobility in rocks

UI

Radionuclide migration and retardation through rock fracture

UI

Fracture filling and coating materials

UI

Interactions of RNs with minerals/oxides

MV, SD

Migration model development and validation

ISP, UI

Determination of distribution coefficient

Matrix diffusion

ISP, MV, UI

Rock matrix diffusion depths

ISP, MV, UI

Rock matrix diffusion coefficients

Radiolysis

UI

Effects of radiolysis in the groundwater

MV, UI

Gas generation rate by radiolysis

Redox front

UI

Migration and retardation in the redox front

MV, UI

Migration of redox front

Colloids

ISP, UI

Characteristics of aquatic colloids

ISP, UI

Radionuclide uptake by colloids

ISP, UI

RN migration by colloids

Microbial activity

UI

Characteristics of microbes

UI

Migration and retardation of RNs by microbes

Gas generation and migration

UI

Gas migration and reactions with the geosphere

ISP, UI

Gas generation rate

  1. For explanation of the abbreviations in the “Application method” column, see Table 2