Radiodifusão
Documentos acerca da exposição a sistemas de radiodifusão.
2211, 2021
| Título | Assessment and management of compliance with radio frequency electromagnetic field exposure limits for workers at radiocommunication sites and facilities |
| Resumo | Recommendation ITU-T K.145 includes guidance on the protection of workers against radio frequency electromagnetic fields (RF-EMFs) exposure in their working environments. Radio frequency (RF) workers range from installation engineers and tower climbers to R&D personnel and laboratory testing engineers. All of these RF workers are exposed to stronger RF-EMF fields than the general public. There are also RF informed workers who have been provided with information on RF-EMF safe working practices for a site as well as all other workers who are regarded as members of the public for the purposes of RF-EMF exposure limits. This Recommendation provides minimum general safety guidance for telecommunication RF workers around the world |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int/rec/T-REC-K.145-202012-I |
| Referência | T-REC-K.145-202012-I |
| Data | Dezembro 2020 |
2211, 2021
| Título | Monitoring of electromagnetic field levels |
| Resumo | Recommendation ITU-T K.83 gives guidance on how to make long-term measurements for the monitoring of electromagnetic fields (EMF) in the selected areas that are under public concern, in order to show that EMFs are under control and under the limits. The purpose of this Recommendation is to provide for the general public clear and easily available data concerning electromagnetic field levels in the form of results of continuous measurement. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int/rec/T-REC-K.83-202006-I |
| Referência | T-REC-K.83-202006-I |
| Data | Junho 2020 |
2211, 2021
| Título | Supplement on radiofrequency exposure evaluation around underground base stations |
| Resumo | Measurement and computation methods of human exposure to electromagnetic fields (EMFs) from fixed radio sources like mobile base stations have been standardized and published as ITU-T K-series Recommendations and IEC 62232. These also include methods prescribed in Japanese regulation and have been basically assumed to be applied to radio sources installed above the ground. Underground base stations for use in small cells of fourth generation (4G) mobile networks are installed underground to construct service areas above the ground. Supplement 20 to ITU-T K-series Recommendations contains the measurement results of radio frequency exposure from underground base stations, to evaluate the exposure from these base stations. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int/rec/T-REC-K.Sup20-202005-I |
| Referência | T-REC-K.Sup20-202005-I |
| Data | Maio 2020 |
2211, 2021
| Título | The impact of RF-EMF exposure limits stricter than the ICNIRP or IEEE guidelines on 4G and 5G mobile network deployment |
| Resumo | Radio frequency electromagnetic field (RF-EMF) exposure limits have become a critical concern for further deployment of wireless networks, especially in countries, regions and even specific cities where RF-EMF limits are significantly stricter than the International Commission for Non-Ionizing Radiation Protection (ICNIRP) or Institute of Electrical and Electronics Engineers (IEEE) guidelines. This problem currently affects several countries, such as China, India, Poland, Russia, Italy and Switzerland, regions of Belgium or cities such as Paris. Supplement 14 to the ITU-T K-series of Recommendations provides an overview of some of the challenges faced by countries, regions and cities that are about to deploy 4G or 5G infrastructures. It provides information on a simulation carried out in Poland of the impact of RF‑EMF limits as an example of a wider phenomenon, applicable to several other countries that have set limits stricter than those contained in the ICNIRP or IEEE guidelines. The results of the simulation indicate that, where RF-EMF limits are stricter than ICNIRP or IEEE guidelines, the network capacity buildout (both 4G and 5G) might be severely constrained and prevent growing data traffic demand and the launching of new services on existing mobile networks being addressed. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int/rec/T-REC-K.Sup14-201909-I |
| Referência | T-REC-K.Sup14-201909-I |
| Data | Setembro 2019 |
2211, 2021
| Título | Electromagnetic field (EMF) strength inside underground railway trains |
| Resumo | The electromagnetic field (EMF) environment surrounding underground railway trains is among those most frequently met by the general public in daily life. When an underground railway train passes through a tunnel, especially, passengers are exposed to the EMF radiated by several repeaters installed on the wall. EMF sources are close to passengers under these conditions. Supplement 19 to ITU-T K‑series Recommendations reports evaluations of EMF exposure levels in underground railway trains from mobile communication base stations installed in tunnels. |
| Fonte | ITU-T |
| Origem | Internacional |
| Autor/Editor | ITU-T Study Group 5 |
| Disponibilidade | Disponível online |
| Endereço | https://www.itu.int/rec/T-REC-K.Sup19-201909-I |
| Referência | T-REC-K.Sup19-201909-I |
| Data | Setembro 2019 |