Rolling Test Simulation of Sea Transport of Spent Nuclear Fuel Under Normal Transport Conditions

다국어 초록 (Multilingual Abstract)

In this study, the impact load resulting from collision with the fuel rods of surrogate spent nuclear fuel (SNF) assemblies was measured during a rolling test based on an analysis of the data from surrogate SNF-loaded sea transportation tests. Unfortunately, during the sea transportation tests, excessive rolling motion occurred on the ship during the test, causing the assemblies to slip and collide with the canister. Hence, we designed and conducted a separate test to simulate rolling in sea transportation to determine whether such impact loads can occur under normal conditions of SNF transport, with the test conditions for the fuel assembly to slide within the basket experimentally determined. Rolling tests were conducted while varying the rolling angle and frequency to determine the angles and frequencies at which the assemblies experienced slippage. The test results show that slippage of SNF assemblies can occur at angles of approximately 14° or greater because of rolling motion, which can generate impact loads. However, this result exceeds the conditions under which a vessel can depart for coastal navigation, thus deviating from the normal conditions required for SNF transport. Consequently, it is not necessary to consider such loads when evaluating the integrity of SNFs under normal transportation conditions.

참고문헌 (Reference)

1 S.B. Ross, "Used Fuel Rail Shock and Vibration Testing Options Analysis" Pacific Northwest National Laboratory 2014

2 P.E. McConnell, "Surrogate Fuel Assembly Multi-Axis Shaker Tests to Simulate Normal Conditions of Rail and Truck Transport" Sandia National Laboratories 2016

3 임재훈 ; 최우석, "Preliminary data analysis of surrogate fuel-loaded road transportation tests under normal conditions of transport" 한국원자력학회 54 (54): 4030-4048, 2022

4 N. A. Klymyshyn, "Normal Transport Loads on Casks and Fuel Assemblies" 2014

5 P. McConnell, "Normal Conditions of Transport Truck Test of a Surrogate Fuel Assembly" Sandia National Laboratories 2014

6 N.A. Klymyshyn, "Modeling and Analysis of the ENSA/DOE Multimodal Transportation Campaign" Pacific Northwest National Laboratory 2018

7 P. McConnell, "Fuel-Assembly Shaker Test Plan-Tests for Determining Loads on Used Nuclear Fuel Under Normal Conditions of Transport" Sandia National Laboratories 2012

8 P. McConnell, "Fuel Assembly Shaker Test for Determining Loads on a PWR Assembly Under Surrogate Normal Conditions of Truck Transport" Sandia National Laboratories 2013

9 P. McConnell, "ENSA ENUN 32P Rail-Cask Transport Tests Start June 2017, Spent Fuel and Waste Science and Technology" Sandia National Laboratories 2017

10 J.H. Lim, "Data Analysis of Simulated Fuel-loaded Sea Transportation Tests Under Normal Conditions of Transport" Nucl. Eng. Technol 2023

11 E.A. Kalinina, "Data Analysis of ENSA/DOE Rail Cask Tests, Sandia National Laboratories" 2018

12 Det Norske Veritas Group, "DNVGLST-N001 Marine Operations and Marine Warranty"

13 E.A. Kalinina, "30 cm Drop Tests" Sandia National Laboratories 2019

14 N.A. Klymyshyn, "30 cm Drop Modeling" Pacific Northwest National Laboratory 2020