Methods for assessing the activity of bactericidal lamps (BUV) in practice

Abstract

Basic. In order to air disinfection of medical objectives in areas with special hygienic sanitary and aseptic type is using BUV lamps. The cleaning of the rooms atmospheric air is usually performed in lack of staff and patients by direct irradiation, except in special cases. When calculating the required amount of UV radiation for the reclamation of atmospheric air in the room using a formula which shows the relationship where every m3 of room volume it was for no less than 0.75 - 1,0W lamp type BUV capacity. Irradiation spaces with UV lamps should be carried out 3-4 times per day. The total time of irradiation of the rooms must not exceed 8 hours per day with duration of action of 30 min. Bactericidal lamps can be placed on the ceiling or walls so that the flow of ultraviolet radiation should be directly sent down, capturing maximum and uniform amount of air space, preferably distributed evenly throughout the room or directly on workspaces.

Materials and methods.To assess the quality of air disinfection by ultraviolet irradiation method in rooms with specialized sanitary-hygienic regime type will use multiple methods: Chronological method, or decreasing time evaluation of UV irradiation source activity. For each source of ultraviolet radiation there are periods with maximal efficiency. When installing the UV lamps, every working hour is written in a registry so it monitors sanitation regime and the working term of ultraviolet irradiation source. The second method is widely used, named arbitrary bacteriological control, that evaluate the quality of air disinfection method of sowing air samples collected orcontrol biological samples after destruction. Unfortunately these methods can not be used with absolute application, experts in the field consider that direct evaluation by instrumental method sources would be a good solution. It will assess the effective power of radiation in (Watts) per (m2) multiplying to the room volume (m3). This assessment can be done using the TKA-PKM-12 device.

Results.We evaluated the activity of bactericidal lamps and got a gap of ultraviolet irradiation potential. Evaluation allows us to say that the efficiency of some lamps is not so good.

Discussion results. We compared the results were assessed with the European legislative framework in the field of public health and determined that in some cases is not satisfy the special requirements of power source, but if we look at this moment through the old regulations, calculate the average power at room volume, such a situation emerges in the regulations.

Conclusion.This speaks about possible insufficient action sources of ultraviolet irradiation for aseptic spaces. It is proposed to deepen the study by having wider assessment of ultraviolet irradiation facilities, and a next step to determine the wavelength of the radiation spectrum bactericide, it is also an attribute of quality efficiency of these sources of ultraviolet light.