描述了通过在使用点附近插入紫外线装置，对军团菌聚集医院的冷热水供应的紫外线（UV）照射效果进行控制评估。描述了四种不同的实验安排和用品，并讨论了结果。结论:实验表明，如果紫外线装置安装在使用点附近，紫外线加预过滤可以防止消毒后军团菌再聚集。紫外线的优点包括易于安装、费用低、对水或管道没有不利影响。 关键词:医院，实验，美国，紫外线辐射，饮用水，淋浴，退伍军人病，细菌，预过滤器，紫外线灯，水处理引用:ASHRAE Trans。1994年，第100卷，第1部分，第3751号论文（RP-610），153-159，图9，参考文献。

Describes a controlled evaluation of the effect of ultraviolet (UV) irradiation of hot and cold water supplies in a hospital colonised with Legionella, by inserting the UV units near the point of use. Describes four different experimental arrangements and supplies and discusses the results. Concludes the experiments demonstrate that UV plus prefiltration can prevent Legionella recolonisation after disinfection if the UV units are installed near the point of use. The advantages of UV include easy installation, low expense and no adverse effects on water or plumbing.KEYWORDS: Hospitals, experiment, USA, ultraviolet radiation, drinking water, showers, legionnaires disease, bacteria, prefilters, ultraviolet lamps, water treatment