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60 Years of U: Perspectives on resources, demand, and the evolving role of nuclear energy
Recent years have seen growing global interest in nuclear energy and rising confidence in the sector. For the first time since the early 2000s, there is renewed optimism about the industry’s future. This change is driven by several major factors: geopolitical developments that highlight the need for secure energy supplies, a stronger focus on resilient energy systems, national commitments to decarbonization, and rising demand for clean and reliable electricity.
Makoto Osaki, Akira Kanagawa
Nuclear Technology | Volume 85 | Number 3 | June 1989 | Pages 274-284
Technical Paper | Nuclear Safety | doi.org/10.13182/NT89-A34249
Articles are hosted by Taylor and Francis Online.
To examine the performance of the high-efficiency particulate air (HEPA) filter, demonstration tests were performed under several severe conditions. The HEPA filter tested is a 610- × 610- × 292-mm conventional deep-pleat filter, normally used in a fuel reprocessing plant. It was tested under a variety of conditions: in air with concentrated dust (100 mg/m3), at high temperatures (maximum 240°C), in humid air (relative humidity 95% and water mist of 100 mg/m3), in a shock transient (overpressure up to 50 kPa), in a large air flow (pressure drop up to 20 kPa), under severe earthquake conditions (acceleration up to 50 m/s2), and in acid and alkaline mists (6 N HNO3, 5% NaOH, 5% Na2CO3). For reference, the performance of HEPA filters in normal conditions was also measured. The HEPA filter performed efficiently enough, even in such severe conditions as would be encountered in a waste air purification system in the nuclear industry. Some empirical formulas are proposed to express the performance of the filter.
