Identification of a failed fuel subassembly due to the dry rupture of its fuel pin in Fast Breeder Test Reactor was accomplished from the measurement of the degree of burn-up of the fuel. In the present paper, a method for the measurement of krypton radionuclides ratios by means of gamma-ray spectrometry is suggested. The method has been applied both for determination of the degree of fuel burn-up through the analysis of fission gases released and identification of a problematic fuel subassembly that is responsible for the released gas. The burn-up of the failed fuel subassembly was found to be > 100 GWd/t which facilitated establishing the failed fuel subassembly with the dry rupture.

中文翻译：

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通过覆盖气体裂变气体分析定位快中子增殖试验堆失效燃料组件

由于燃料棒在快速增殖试验堆中干裂而导致的失效燃料组件的识别是通过测量燃料的燃烧程度来完成的。在本文中，提出了一种通过伽马射线能谱法测量氪放射性核素比率的方法。该方法已被应用于通过分析释放的裂变气体来确定燃料燃烧的程度，以及识别导致释放气体的有问题的燃料组件。发现故障燃料组件的燃耗 > 100 GWd/t，这有助于建立具有干破裂的故障燃料组件。