Slide background




Guidance compliance of exposure to pulsed and complex non-sinusoidal waveforms below 100 kHz

ID 9491 | | Visite: 388 | Documenti Sicurezza EntiPermalink: https://www.certifico.com/id/9491

Guidance compliance of exposure to pulsed and complex non sinusoidal waveforms below 100 kHz

Guidance compliance of exposure to pulsed and complex non-sinusoidal waveforms below 100 kHz

THE INTERNATIONAL Commission on Non-Ionizing Radiation Protection (ICNIRP) has published guidelines for limiting exposure to electric, magnetic and electromagnetic fields (ICNIRP 1998a, b) and has provided frequency dependent basic restrictions and reference levels from which a hazard assessment for exposures to electric and magnetic fields can be made. This document provides clarification for assessing compliance with the guidelines for pulsed and complex non-sinusoidal waveforms with frequency components predominantly up to 100 kHz. The approaches described may be helpful to product standards setting bodies concerned with metrology.

In the frequency range up to 100 kHz there are a number of sources of non-sinusoidal magnetic fields with the potential to exceed the reference levels for exposures specified in the ICNIRP guidelines. Common sources include electronic article surveillance gates, demagnetizers, electronic security systems, and metal detectors, and these generate predominantly magnetic fields. Therefore, this statement focuses mainly on magnetic fields; however, this can be readily extended to electric fields.

The ICNIRP guidelines specify “basic restrictions” and “reference levels.” Basic restrictions on exposure to magnetic fields are based on established adverse health effects. For magnetic fields below 100 kHz the physical quantity used to specify the basic restrictions is current density (J) induced inside the body. Reference levels are values that are provided for practical exposure assessment purposes to determine whether the basic restrictions are likely to be exceeded. Compliance with the reference levels is designed to ensure compliance with the relevant basic restriction. For exposures to magnetic fields below 100 kHz, the derived quantity magnetic flux density (B) is the parameter used for the reference levels. Reference levels expressed in terms of rate of magnetic flux density change dB/dt can also be derived from basic restrictions

Add More

ICNIRP 2003

Pin It


Tags: Sicurezza lavoro Rischio radiazioni ionizzanti Abbonati Sicurezza

Articoli correlati

Ultimi archiviati Sicurezza

Check list   Attuazione procedure precauzionali e contrasto COVID 19 ambienti di lavoro
Mar 25, 2020 211

Check list Ambienti di lavoro - Attuazione procedure precauzionali e contrasto COVID

Check list Ambienti di lavoro - Attuazione procedure precauzionali e contrasto COVID Check list Attuazione delle procedure precauzionali e di contrasto alla diffusione del contagio da COVID-19 negli ambienti di lavoro CGIL Lombardia - CISL Lombardia - UIL Milano e Lombardia Il 14 marzo 2020 è stato… Leggi tutto
Lavori usuranti proroga per la compilazione del modello
Mar 20, 2020 77

Lavori usuranti | proroga per la compilazione modello al 30.05.2020

Lavori usuranti | proroga per la compilazione del modello al 30.05.2020 Nota MPLS n. 1160 del 19.03.2020 Comunicazioni di svolgimento: a) di attività faticose e pesanti, c.d. usuranti (art. 2, comma 5, decreto legislativo 67/2011); b) di un processo produttivo in serie caratterizzato dalla “linea… Leggi tutto
Raccomandazioni operative per i tecnici verificatori
Mar 19, 2020 222

Circolare Min. della Salute 18 marzo 2020 prot. 9268

COVID-19 - Raccomandazioni operative per i tecnici verificatori Ministero della Salute, circ. 18 marzo 2020, prot. n. 9268 Oggetto: COVID-19. Raccomandazioni operative per i tecnici verificatori Si fa seguito al Decreto del Presidente del Consiglio dei Ministri emanato l'8 marzo 2020 in cui sono… Leggi tutto

Più letti Sicurezza