https://doi.org/10.15407/iopt.2023.58.114

Optoelectron. Semicond. Tech. 58, 114-121 (2023)

B.G.Shabashkevich 1 , Yu.G. Dobrovolsky 1 , V.I. Nazarenko 2

LED SOURCES OF ULTRAVIOLET RADIATION: METHODICAL AND

INSTRUMENTAL SUPPORT TAKING INTO ACCOUNT THE

HARMONIZATION OF EU AND UKRAINIAN LEGISLATION

One of the effective means of disinfecting premises is its irradiation with ultraviolet bactericidal radiation

(UVBV), which is in the UV-C region (200 nm - 280 nm) and for mercury lamps has a radiation peak at a wavelength

of 254 nm. However, UVBV should be used competently and with appropriate caution in terms of its intensity and

safety, avoiding risks of damage to human skin and eyes. Therefore, UVBV is used indoors, mainly in the absence of a

person. But when using sources of this type of optical radiation in the presence of a person, proper attention should be

paid to controlling the intensity of UVBV and the time of its exposure.

At the same time, it should be noted that the active processes of harmonization of the legislation of the EU and

Ukraine require the modernization of the regulatory and methodological base for the measurement and hygienic

assessment of ultraviolet radiation in the production environment and in the environment, significantly expanding the

possibilities of using UVB sources, including in the presence of humans. Therefore, the purpose of the study is to create

the basis for appropriate methodological recommendations for the use of bactericidal ultraviolet monochrome LED

sources for disinfection of air and surfaces in rooms, as well as the formulation of appropriate requirements for UV

radiometers, which should ensure control of the technical parameters of the mentioned ultraviolet monochrome LED

sources.

As a result of the research, scientific principles were proposed for the instrumental and methodical control of

the safe use of bactericidal ultraviolet monochrome LED sources for the improvement of air and surfaces in premises of

various purposes, taking into account the requirements of the legislation of Ukraine and the EU.

The technical characteristics of the available UVBV LED sources were analyzed, based on which the medical

and technical requirements for UV radiometers were formulated, which should ensure control of the intensity and

actinic dose of UV radiation in accordance with the requirements of DSTU EN 62471:2017 "Safety of photobiological

lamps and lamp systems (EN 62471:2008 , IDT; IES 62471:2006, MOD)". Design approaches to the formation of the

spectral range of RG sensitivity by using appropriate light filters, including for the blue light range (380-480 nm), have

been determined. A technique for correcting the spectral characteristic of the RG sensitivity is proposed, which

contributes to the reduction of the intensity measurement error created by different LED sources.

Keywords: LED sources, UV radiation, radiometer, hygienic assessment.