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为了验证秦山核电厂燃料元件的堆内性能,在重水试验堆开展了3×3-2小元件堆内综合辐照考验。本文就影响考验结果的若干技术问题和考验条件进行了仔细的分析,充分论证了该试验具有的实际意义。考验件在堆内经历了相当电厂堆稳态工况和一般事故工况的考验。 考验棒最大燃耗达34GWd/tU,棒最大表面热负荷达1.39MW/m~2。在整个考验过程中没有发生考验棒的破损。文章最后就考验结果在验证燃料元件性能及其在电厂堆内安全可靠运行方面进行了评价。
In order to verify the in-reactor performance of Qinshan NPP fuel elements, a comprehensive irradiation test of 3 × 3-2 small components was carried out in the heavy water test reactor. In this paper, a number of technical problems and test conditions that affect the test results have been carefully analyzed, fully demonstrating the practical significance of the test. The test piece experienced considerable power plant heap steady-state conditions and general accident conditions in the reactor test. Test rod maximum fuel consumption up to 34GWd / tU, rod maximum surface thermal load of 1.39MW / m ~ 2. In the course of the test did not happen to test the rod damage. Finally, the article evaluates the test results in verifying the performance of fuel elements and their safe and reliable operation in the power plant.