BS EN ISO 9978:2022
Radiation protection. Sealed sources. Leakage test methods
发布时间：2023-03-31 实施时间：


BS EN ISO 9978:2022标准规定了密封源泄漏测试的方法。密封源是指包含放射性物质或非放射性物质的封闭容器。密封源广泛应用于医疗、工业和科学领域，例如用于治疗癌症、无损检测和研究等。密封源泄漏可能会导致放射性物质泄漏到环境中，从而对人类和环境造成危害。因此，密封源泄漏测试是非常重要的。

BS EN ISO 9978:2022标准规定了两种密封源泄漏测试方法：静态测试和动态测试。静态测试是指将密封源放置在一个封闭的容器中，然后测量容器内外的放射性物质浓度变化。动态测试是指将密封源放置在一个流量计中，然后测量流量计内外的放射性物质浓度变化。这两种测试方法都需要使用放射性探测器来测量放射性物质的浓度变化。

BS EN ISO 9978:2022标准还规定了测试的频率和测试结果的评估方法。测试频率应根据密封源的使用情况和泄漏风险来确定。测试结果应根据国家或地区的法规和标准进行评估。如果测试结果超出了规定的限值，应采取适当的措施来修复泄漏或更换密封源。

BS EN ISO 9978:2022标准适用于所有密封源，包括放射性物质和非放射性物质。该标准的目的是确保密封源在使用期间不会泄漏放射性物质，从而保护人类和环境免受辐射危害。

相关标准
- BS EN ISO 7503-1:2018 Radiological protection. X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy. Part 1: Radiation characteristics and production methods
- BS EN ISO 7503-2:2018 Radiological protection. X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy. Part 2: Dosimetry for radiation protection over the energy ranges from 8 keV to 1,3 MeV and 4 MeV to 9 MeV
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- BS EN ISO 7503-4:2018 Radiological protection. X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy. Part 4: Calibration of area and personal dosemeters in low-energy X reference radiation fields
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