Buildup factor is an important parameter in the design of a radiation shielding system. As a manufacturing material commonly used for nuclear equipment, type 316 stainless steel is selected as the research object of this article. Exposure geometric progression fitting parameters and the corresponding exposure buildup factor (EBF) are calculated for type 316 stainless steel in the photon energy range of 0.015 MeV - 15 MeV, as well as penetration depth up to 40 mean-free-paths (mfp), and studied as a function of the photon energy and penetration depth. It can be observed that EBF changes significantly with the photon energy and penetration depth. These changes are attributed to the dominant interaction process in different photon energy regions. Besides, EBFs of 1.17 MeV and 1.33 MeV are interpolated using the obtained data and compared with those from the MCNP5 simulation by introducing a co-concentric multi-layer model, respectively. The results obtained from the Geometric Progression method are consistent with those calculated by the MCNP5 code. Buildup factors for type 316 stainless steel obtained in this article can be used as a reference for shielding performance assessment of the equipment made of type 316 stainless steel.
Cite this paper
Li, D. , Guo, Y. , Wang, G. and Ge, L. (2022). Calculation and Study on the Exposure Buildup Factor of Type 316 Stainless Steel. Open Access Library Journal, 9, e8679. doi: http://dx.doi.org/10.4236/oalib.1108679.
Li, C. and Zhang, L. (1988) Application of the Geometric Space Assembly Method in the Point Kernel Integration Calculation. Nuclear Power Engineering, 5, 42-52. (In Chinese)
Li, H., Zhao, Y., Liu, L., et al. (2017) Calculation and Study of γ-Ray Absorbed Dose Buildup Factor Based on MCNP. Radiation Protection, 37, 161-165. (In Chinese)
Sharaf, J.M. and Saleh, H. (2015) Gamma-Ray Energy Buildup Factor Calculations and Shielding Effects of Some Jordanian Building Structures. Radiation Physics & Chemistry, 110, 87-95. https://doi.org/10.1016/j.radphyschem.2015.01.031
White, G.R. (1950) The Penetration and Diffusion of 60Co Gamma-Rays in Water Using Spherical Geometry. Physical Review, 80, 154-156.
https://doi.org/10.1103/PhysRev.80.154
Du, D. (2014) Study on Stress Corrosion Behavior of 316 Stainless Steel in the Primary Coolant Circuit of Pressurized Water Reactor. Shanghai Jiaotong University, Shanghai.
Olaseinde, O.A. (2015) Comparative Study of the Effect of Temperature on the Corrosion Behaviour of 2205 Duplex Stainless Steel and 316 Austenitic Stainless Steel in Acidic Chloride Environment. Advances in Materials Physics & Chemistry, 5, 185-190. https://doi.org/10.4236/ampc.2015.55019
Yan, C., Li, Y. and Wang, M. (2018) Type 316 Austenitic Steels for Reactor Vessel and Internals in Sodium Fast Reactors and Their Creep Rupture Properties. Journal of Iron and Steel Research, 30, 935-942.
Harima, Y. (1983) An Approximation of Gamma-Ray Buildup Factors by Modified Geometrical Progression. Nuclear Science and Engineering, 83, 299-309.
https://doi.org/10.13182/NSE83-A18222
Olarinoye, I.O., Odiaga, R.I. and Paul, S. (2019) EXABCal: A Program for Calculating Photon Exposure and Energy Absorption Buildup Factors. Heliyon, 5, e02017.
https://doi.org/10.1016/j.heliyon.2019.e02017
Harima, Y., Sakamoto, Y., Tanaka, S. and Kawai, M. (1986) Validity of the Geometric-Progression Formula in Approximating Gamma-Ray Buildup Factors. Nuclear Science and Engineering, 94, 24-35. https://doi.org/10.13182/NSE86-A17113
