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Difficulties in applying numerical simulations to an evaluation of occupational hazards caused by electromagnetic fields.

Zradziński P - Int J Occup Saf Ergon (2015)

Bottom Line: Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field.This paper presents the identified difficulties in applying numerical simulations to evaluate physical estimators of direct and indirect effects of exposure to electromagnetic fields at various frequencies.The following difficulties in reliable numerical simulations of workers' exposure to the electromagnetic field have been considered: workers' body models (posture, dimensions, shape and grounding conditions), working environment models (objects most influencing electromagnetic field distribution) and an analysis of parameters for which exposure limitations are specified in international guidelines and standards.

View Article: PubMed Central - PubMed

Affiliation: a Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Poland.

ABSTRACT
Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field. This paper presents the identified difficulties in applying numerical simulations to evaluate physical estimators of direct and indirect effects of exposure to electromagnetic fields at various frequencies. Exposure of workers operating a plastic sealer have been taken as an example scenario of electromagnetic field exposure at the workplace for discussion of those difficulties in applying numerical simulations. The following difficulties in reliable numerical simulations of workers' exposure to the electromagnetic field have been considered: workers' body models (posture, dimensions, shape and grounding conditions), working environment models (objects most influencing electromagnetic field distribution) and an analysis of parameters for which exposure limitations are specified in international guidelines and standards.

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Relative values of localised (10 g) SAR in head (H), trunk (T) and legs (L), (bars) under various grounded human body models (reference value – head of the HUGO model); with the uncertainty of numerical simulations (whiskers).
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Figure 0004: Relative values of localised (10 g) SAR in head (H), trunk (T) and legs (L), (bars) under various grounded human body models (reference value – head of the HUGO model); with the uncertainty of numerical simulations (whiskers).

Mentions: Figure 3 shows the whole body averaged (WBA) SAR values in cylindrical, HUGO and CIOP-MAN standing and sitting models, calculated for various grounding conditions, presented as normalised in relation to the values obtained for the HUGO insulated model, while Figure 4 shows localised (10 g) SAR in head (H), trunk (T) and legs (L) of these grounded models – in relation to the values obtained in the head of the HUGO model.Figure 3.


Difficulties in applying numerical simulations to an evaluation of occupational hazards caused by electromagnetic fields.

Zradziński P - Int J Occup Saf Ergon (2015)

Relative values of localised (10 g) SAR in head (H), trunk (T) and legs (L), (bars) under various grounded human body models (reference value – head of the HUGO model); with the uncertainty of numerical simulations (whiskers).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4566884&req=5

Figure 0004: Relative values of localised (10 g) SAR in head (H), trunk (T) and legs (L), (bars) under various grounded human body models (reference value – head of the HUGO model); with the uncertainty of numerical simulations (whiskers).
Mentions: Figure 3 shows the whole body averaged (WBA) SAR values in cylindrical, HUGO and CIOP-MAN standing and sitting models, calculated for various grounding conditions, presented as normalised in relation to the values obtained for the HUGO insulated model, while Figure 4 shows localised (10 g) SAR in head (H), trunk (T) and legs (L) of these grounded models – in relation to the values obtained in the head of the HUGO model.Figure 3.

Bottom Line: Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field.This paper presents the identified difficulties in applying numerical simulations to evaluate physical estimators of direct and indirect effects of exposure to electromagnetic fields at various frequencies.The following difficulties in reliable numerical simulations of workers' exposure to the electromagnetic field have been considered: workers' body models (posture, dimensions, shape and grounding conditions), working environment models (objects most influencing electromagnetic field distribution) and an analysis of parameters for which exposure limitations are specified in international guidelines and standards.

View Article: PubMed Central - PubMed

Affiliation: a Central Institute for Labour Protection - National Research Institute (CIOP-PIB) , Poland.

ABSTRACT
Due to the various physical mechanisms of interaction between a worker's body and the electromagnetic field at various frequencies, the principles of numerical simulations have been discussed for three areas of worker exposure: to low frequency magnetic field, to low and intermediate frequency electric field and to radiofrequency electromagnetic field. This paper presents the identified difficulties in applying numerical simulations to evaluate physical estimators of direct and indirect effects of exposure to electromagnetic fields at various frequencies. Exposure of workers operating a plastic sealer have been taken as an example scenario of electromagnetic field exposure at the workplace for discussion of those difficulties in applying numerical simulations. The following difficulties in reliable numerical simulations of workers' exposure to the electromagnetic field have been considered: workers' body models (posture, dimensions, shape and grounding conditions), working environment models (objects most influencing electromagnetic field distribution) and an analysis of parameters for which exposure limitations are specified in international guidelines and standards.

Show MeSH
Related in: MedlinePlus