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Validation of Tritium Protection Factors of Respiratory Protective Equipment: Setup and Initial Tests
Fusion Science and Technology ( IF 0.9 ) Pub Date : 2020-02-28 , DOI: 10.1080/15361055.2019.1704108
Michael McDonald 1 , Armando Antoniazzi 1 , Clive Morton 1
Affiliation  

Abstract Several types of radiological respiratory protective equipment (RPE) are used in tritiated environments at nuclear facilities and nuclear power plants to protect workers in those environments. It is crucial that the level of protection the RPE provides is well understood. A tritium protection factor (PF) may be assigned to RPE. The PF is often defined as the ratio of the tritium concentration in the ambient air to the tritium concentration in the breathing air. Field observations at Canada Deuterium Uranium (CANDU) nuclear plants indicate that the in-use PFs are too conservative and do not represent actual internal uptakes following work in tritiated atmospheres. To improve radioactive work planning and work execution efficiency, more accurate tritium PFs are needed to cover the variety of personal radiological RPE currently in use. In order to test PFs of RPE, Kinectrics has designed, manufactured, and commissioned a tritium facility, referred to as the tritium exposure box (TEB), through support from the CANDU Owners Group. The TEB is a self-contained enclosure that permits the use of a full-sized mannequin with RPE for testing in a tritium oxide atmosphere. Tritium concentrations of up to 3.7 × 108 Bq/m3 may be achieved and maintained inside the TEB. The clean airflow to an air-supplied suit may range from 420 to 800 standard liters per minute. Following the successful commissioning of the TEB, Kinectrics has performed testing of an air-supplied plastic suit to determine the protection provided.

中文翻译:

呼吸防护设备氚保护因子的验证:设置和初始测试

摘要 在核设施和核电厂的氚化环境中使用了几种类型的放射性呼吸防护设备 (RPE),以保护这些环境中的工作人员。充分了解 RPE 提供的保护级别至关重要。可以为 RPE 指定氚保护系数 (PF)。PF 通常定义为环境空气中氚浓度与呼吸空气中氚浓度之比。加拿大氘铀 (CANDU) 核电厂的现场观察表明,在用 PF 过于保守,不代表在氚化大气中工作后的实际内部吸收。为了提高放射性工作计划和工作执行效率,需要更准确的氚 PF 来覆盖当前使用的各种个人放射性 RPE。为了测试 RPE 的 PF,Kinectrics 在 CANDU Owners Group 的支持下设计、制造和调试了一个氚设施,称为氚暴露箱 (TEB)。TEB 是一个独立的外壳,允许使用带有 RPE 的全尺寸人体模型在氧化氚气氛中进行测试。氚浓度可以达到并保持在 TEB 内,最高可达 3.7 × 108 Bq/m3。通向供气防护服的清洁气流范围为每分钟 420 至 800 标准升。在 TEB 成功调试后,Kinectrics 对供气塑料防护服进行了测试,以确定提供的保护。通过 CANDU Owners Group 的支持。TEB 是一个独立的外壳,允许使用带有 RPE 的全尺寸人体模型在氧化氚气氛中进行测试。氚浓度可以达到并保持在 TEB 内,最高可达 3.7 × 108 Bq/m3。通向供气防护服的清洁气流范围为每分钟 420 至 800 标准升。在 TEB 成功调试后,Kinectrics 对供气塑料防护服进行了测试,以确定提供的保护。通过 CANDU Owners Group 的支持。TEB 是一个独立的外壳,允许使用带有 RPE 的全尺寸人体模型在氧化氚气氛中进行测试。氚浓度可以达到并保持在 TEB 内,最高可达 3.7 × 108 Bq/m3。通向供气防护服的清洁气流范围为每分钟 420 至 800 标准升。在 TEB 成功调试后,Kinectrics 对供气塑料防护服进行了测试,以确定提供的保护。通向供气防护服的清洁气流范围为每分钟 420 至 800 标准升。在 TEB 成功调试后,Kinectrics 对供气塑料防护服进行了测试,以确定提供的保护。通向供气防护服的清洁气流范围为每分钟 420 至 800 标准升。在 TEB 成功调试后,Kinectrics 对供气塑料防护服进行了测试,以确定提供的保护。
更新日期:2020-02-28
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