STORAGE: A Source Term Model for Intermediate-Level Radioactive Waste

Figures & data

Fig. 1. Simplified description of a package used by STORAGE.

Fig. 2. Variation of self-absorption coefficient $a^{\alpha }$ with particle energy and PuO₂ source radius.

Fig. 3. Schematic representation of (a) Grain on surface and (b) Embedded grain configurations.

Fig. 4. Fraction of the incident energy absorbed by a PE target as a function of the depth for a spherical grain of PuO₂ with a radius of 5 µm; α energy is 5.5 MeV.

Fig. 5. Projected path curve of PuO₂ calculated by SRIM.

TABLE I Hydrogen Yields of PE and PVC as a Function of the Dose

Dose (MGy)	PE $G_{H_2}^{\alpha }$(10^−Citation7 mol/J)	PVC $G_{H_2}^{\alpha }$(10^−Citation7 mol/J)
0	3.9	0.55
2	2.7
2.1		0.4
5.6	2.2
9.4 10	1.85	0.34
20		0.25

Fig. 6. Time evolution of the apparent G-value, $Q_{H_2}/P_{em},$ for different options: (black) without the $\alpha$ module, (red) 0.02 g·m⁻², (blue) 0.2 g·m⁻².

Fig. 7. Experimental and modeled hydrogen production rate:

organic waste,

metallic waste,

mixture of organic and metallic waste, and

filtering media.

S. ESNOUF et al., “Hydrogen Generation from α Radiolysis of Organic Materials in Transuranic Waste. Comparison Between Experimental and Simulation Results,” Nucl. Technol., 208, 2, 347 (2022); https://doi.org/10.1080/00295450.2021.1896927.

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J. VIDAL et al., “CESAR: A Code for Nuclear Fuel and Waste Characterisation,” presented at the WM’06 Conf., Tucson, Arizona, February 26, 2006.

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