Determination of workers' exposure to electromagnetic fields and assessment of risk at a broadcast site

This standard provides methods for assessing compliance with the requirements of the Directive 2013/35/EU] at a site operating one or more broadcast transmitters.
This standard covers the frequency range up to 40 GHz.
NOTE   The Council and European Parliament Directive 2013/35/EU will be transposed into national legislation in all the EU member countries. Users of this standard shall consult the national legislation related to this transposition in order to identify the national regulations and requirements. These national regulations and requirements can have additional requirements that are not covered by this standard.

Ermittlung der Exposition von Arbeitnehmern gegenüber elektromagnetischen Feldern und Bewertung des Risikos am Standort eines Rundfunksenders

Détermination de l'exposition des travailleurs aux champs électromagnétiques et évaluation des risques sur un site de radiodiffusion

La présente norme fournit des méthodes pour évaluer la conformité d’un site exploitant un ou plusieurs émetteurs de radiodiffusion aux exigences de la Directive 2013/35/UE.
La présente norme couvre la plage de fréquences jusqu’à 40 GHz.
NOTE   La Directive 2013/35/UE du Parlement européen et du Conseil de l’Union européenne sera transposée dans les législations nationales de tous les pays membres de l’UE. Les utilisateurs de la présente norme doivent consulter la législation nationale liée à cette transposition afin d’identifier les réglementations et exigences nationales. Ces réglementations et exigences nationales peuvent avoir des exigences supplémentaires non couvertes par la présente norme.

Ugotavljanje izpostavljenosti delavca elektromagnetnemu sevanju in ocena tveganja na mestu oddajnika

Ta standard podaja metode za ocenjevanje skladnosti z zahtevami Direktive 2013/35/EU na mestu, na katerem deluje en ali več oddajnikov. Ta standard obravnava frekvenčno območje do vključno 40 GHz. OPOMBA: Direktiva 2013/35/EU Evropskega parlamenta in Sveta bo prenesena v nacionalno zakonodajo vseh držav članic EU. Uporabniki tega standarda morajo upoštevati nacionalno zakonodajo, povezano s tem prenosom, ter se seznaniti z nacionalni predpisi in zahtevami. Ti nacionalni predpisi in zahteve lahko vključujejo dodatne zahteve, ki niso obravnavane v tem standardu.

General Information

Status
Published
Public Enquiry End Date
09-Feb-2017
Publication Date
20-Aug-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Aug-2018
Due Date
13-Oct-2018
Completion Date
21-Aug-2018

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SLOVENSKI STANDARD
SIST EN 50496:2018
01-oktober-2018
1DGRPHãþD
SIST EN 50496:2009
Ugotavljanje izpostavljenosti delavca elektromagnetnemu sevanju in ocena
tveganja na mestu oddajnika

Determination of workers' exposure to electromagnetic fields and assessment of risk at a

broadcast site

Ermittlung der Exposition von Arbeitnehmern gegenüber elektromagnetischen Feldern

und Bewertung des Risikos am Standort eines Rundfunksenders
Détermination de l'exposition des travailleurs aux champs électromagnétiques et
évaluation des risques sur un site de radiodiffusion
Ta slovenski standard je istoveten z: EN 50496:2018
ICS:
17.240 Merjenje sevanja Radiation measurements
SIST EN 50496:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50496:2018
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SIST EN 50496:2018
EUROPEAN STANDARD EN 50496
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2018
ICS 17.240 Supersedes EN 50496:2008
English Version
Determination of workers' exposure to electromagnetic fields and
assessment of risk at a broadcast site

Détermination de l'exposition des travailleurs aux champs Ermittlung der Exposition von Arbeitnehmern gegenüber

électromagnétiques et évaluation des risques sur un site de elektromagnetischen Feldern und Bewertung des Risikos

radiodiffusion am Standort eines Rundfunksenders

This European Standard was approved by CENELEC on 2017-12-25. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,

Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50496:2018 E
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EN 50496:2018 (E)
Contents Page

European foreword ................................................................................................................................. 3

1 ....... Scope ............................................................................................................................................. 4

2 ....... Normative references................................................................................................................... 4

3 ....... Terms and definitions .................................................................................................................. 5

4 ....... Assessment methods .................................................................................................................. 7

5 ....... Collection of technical data ........................................................................................................ 8

6 ....... Determination of exposure levels by calculation or measurement ........................................ 9

7 ....... Zoning of exposure work place ................................................................................................12

8 ....... Checking of operating procedures in the different exposure work places..........................16

9 ....... Information and training ............................................................................................................19

10 ..... Assessment report .....................................................................................................................20

Annex A (normative) Summation formulae ......................................................................................21

A.1 ... General ........................................................................................................................................21

A.2 ... Frequency range from 1 Hz to 10 MHz .....................................................................................21

A.3 ... Frequency range from 100 kHz to 300 GHz .............................................................................22

A.4 ... Contact currents in the frequency range 1 Hz to 110 MHz ....................................................23

Annex B (informative) Marking ..........................................................................................................24

Bibliography ..........................................................................................................................................25

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EN 50496:2018 (E)
European foreword

This document (EN 50496:2018) has been prepared by CLC/TC 106X “Electromagnetic fields in the

human environment”.
The following dates are fixed:
• latest date by which this document has (dop) 2018-12-25
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-12-25
standards conflicting with this document
have to be withdrawn
This document supersedes EN 50496:2008.

The main changes included in the EN 50496:2018 with respect to EN 50496:2008 are consequential to

the replacement of Directive 2004/40/EC by Directive 2013/35/EU.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission

and the European Free Trade Association, and supports essential requirements of EU Directive(s).

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EN 50496:2018 (E)
1 Scope

This European Standard provides methods for assessing compliance with the requirements of the

Directive 2013/35/EU at a site operating one or more broadcast transmitters.
This standard covers the frequency range up to 40 GHz.

Users of this standard are invited to consult the national legislation in order to identify the national

regulations and requirements. These national regulations and requirements can have additional

requirements that are not covered by this standard.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

EN 50413, Basic standard on measurement and calculation procedures for human exposure to electric,

magnetic and electromagnetic fields (0 Hz - 300 GHz)

EN 50420, Basic standard for the evaluation of human exposure to electromagnetic fields from a stand

alone broadcast transmitter (30 MHz - 40 GHz)

EN 50475, Basic standard for the calculation and the measurement of human exposure to

electromagnetic fields from broadcasting service transmitters in the HF bands (3 MHz - 30 MHz)

EN 62226-2-1, Exposure to electric or magnetic fields in the low and intermediate frequency range -

Methods for calculating the current density and internal electric field induced in the human body - Part

2-1: Exposure to magnetic fields - 2D models (IEC 62226-2-1)

EN 50527-1, Procedure for the assessment of the exposure to electromagnetic fields of workers bearing

active implantable medical devices — Part 1: General

EN 50527-2-1, Procedure for the assessment of the exposure to electromagnetic fields of workers

bearing active implantable medical devices — Part 2-1: Specific assessment for workers with cardiac

pacemakers

EN 50647, Basic standard for the evaluation of workers' exposure to electric and magnetic fields from

equipment and installations for the production, transmission and distribution of electricity

Council Recommendation 1999/519/EC of 12 July 1999 on the limitation of exposure of the general

public to electromagnetic fields (0 Hz to 300 GHz) (Official Journal L 199 of 30 July 1999)

Directive 2013/35/EU of the European parliament and of the council of 26 June 2013 on the minimum

health and safety requirements regarding the exposure of workers to the risks arising from physical

agents (electromagnetic fields) (20th individual Directive within the meaning of Article 16 of Directive

89/391/EEC)
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
action levels

action levels (ALs)’ means operational levels established for the purpose of simplifying the process of

demonstrating the compliance with relevant ELVs or, where appropriate, to take relevant protection or

prevention measures specified in Directive 2013/35/EU

Note 1 to entry: For electric fields, ‘low ALs’ and ‘high ALs’ means levels which relate to the specific protection or

prevention measures specified in Directive 2013/35/EU.

Note 2 to entry: For magnetic fields, ‘low ALs’ means levels which relate to the sensory effects ELVs and ‘high

ALs’ to the health effects ELVs.
3.2
AIMD
Active Implantable Medical Device
3.3
antenna

device that serves as a transducer between a guided wave (e.g. coaxial cable) and a free space wave,

or vice versa
3.4
near-field region

region generally in proximity to an antenna or other radiating structure, in which the electric and magnetic

fields do not have a substantially plane-wave character, but vary considerably from point to point

Note 1 to entry: The near-field region is further subdivided into the reactive near-field region, which is closest to

the radiating structure and that contains most or nearly all of the stored energy, and the radiating near-field region

where the radiation field predominates over the reactive field, but lacks substantial plane-wave character and is

complicated in structure.
3.5
broadcasting service

radiocommunication service in which the transmissions are intended for direct reception by the general

public

Note 1 to entry: This service can include sound transmissions, television transmissions or other types of

transmission, e.g. data.
3.6
broadcast site
site operating one or more broadcast transmitters
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3.7
contact current

current flowing into the body resulting from contact with a conductive object in an electromagnetic field

Note 1 to entry: This is the localized current flow into the body (usually the hand, for a light brushing contact).

Note 2 to entry: Shocks and burns can be the adverse indirect effects.

Note 3 to entry: Contact current relates to a short-term effect and cannot be time-averaged.

3.8
induced current

current flowing inside a human body resulting directly from an exposure to an electromagnetic field

3.9
employer

any natural or legal person who has an employment relationship with the worker and has responsibility

for the undertaking and/or establishment (Directive 89/391/EEC)
3.10
exposure limit values (ELVs)

limits on exposure to electromagnetic fields in Directive 2013/35/EU established on the basis of

biophysical and biological considerations, in particular on the basis of scientifically well-established

short-term and acute direct effects, i.e. thermal effects (SAR, Power density) and electrical stimulation

of tissues (internal electric field):

— health effects ELVs: ELVs above which workers might be subject to adverse health effects, such

as thermal heating or stimulation of nerve and muscle tissue;

— sensory effects ELVs: sensory effects ELVs apply to frequency ranges of 0 Hz to 400 Hz

(magnetic and electric fields) and 0,3 GHz to 6 GHz (pulsed signals) and above which workers might be

subjected to transient disturbed sensory perceptions and minor changes in brain functions

3.11
local safety instruction

safety instructions relating to a specific broadcast site and containing the information specified in

Clause 8:

— it needs to include all the necessary safety-related indications and, if applicable, point out the

possible risk of exposure to electromagnetic fields where these are at levels above the worker action

levels;

— it could include all the necessary safety-related indications and, if applicable, point out the

possible risk of exposure to electromagnetic fields where these are at levels above the limits for the

general public
3.12
magnetic flux density

magnetic flux density (B) is a vector quantity resulting in a force that acts on moving charges. The

magnitude of magnetic flux density (B) is expressed in tesla (T)
B = µ H
where µ is the permeability of the medium and H is the magnetic field strength

Note 1 to entry: In free space and in biological materials, magnetic flux density and magnetic field strength (H)

can be interchanged using the magnetic field strength of H = 1 A/m equivalence to magnetic flux density of

B = 4π 10 T (approximately 1,25 microtesla).
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3.13
power density
power per area unit normal to the direction of electromagnetic wave propagation
2 2
S=EH = E /Z=H Z

Note 1 to entry: For plane waves the power density (S), electric field strength (E) and magnetic field strength (H)

= 120π Ω = 377 Ω
are related by Z = Z0

Note 2 to entry: E and H are expressed in units of V/m and A/m, respectively, and S in the unit of W/m .

3.14
transmitter

device to generate the radio frequency broadcast signal which is fed into the antenna system

3.15
worker

any person employed by an employer, including trainees and apprentices but excluding domestic

servants
[SOURCE: Directive 89/391/EEC [7]]
3.16
work place
location where workers have access as part of their duties

Note 1 to entry: Particular place of work within the broadcast site as for example the area near a transmitter with

an open enclosure, the area inside a transmitting antenna, on a ladder inside a broadcast mast / tower and platforms

under and above the antennas, the area around feed lines, etc.
4 Assessment methods
4.1 Worker exposure assessment
The assessment should be done using the steps outlined below:
– collection of technical data (Clause 5);

– determination of exposure levels by calculation or measurement (Clause 6). This includes checking

of operating procedures in the different exposure work places (Clause 8).
The results of the assessment process are:
– zoning of exposure work places (Clause 7);
– information and training (Clause 9);
– assessment report (Clause 10).

In the case of simultaneous exposure to multiple sources, the combined exposure shall be considered,

referring to Annex A.
4.2 Use of public exposure assessment

If an evaluation has already been undertaken in accordance with the provisions of Council

Recommendation 1999/519/EC, and the restrictions as specified therein are respected, then the

exposure limit values for workers of Directive 2013/35/EU are also met.
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4.3 Assessment after technical modification

After a technical modification to the installation or the environment, it is necessary to consider repeating

or revising the assessment. This is particularly necessary if an additional transmitter or antenna is added

to a site.
5 Collection of technical data

In order to plan the assessment of a site correctly, it is necessary to make a preliminary evaluation of

the expected electromagnetic fields.

Therefore, it is very important to collect information about the site itself and the electromagnetic sources

in and around it. It is useful to understand, in relation to each source if the point under evaluation is in

the near or far field, which are the propagation characteristics, if there are elements that can cause

absorption, reflection, reinforcements, resonance, etc.
Information on the following items may be needed:
1) with regard to the surrounding area:

- Map of the surrounding areas possibly including facilities (such as buildings, territory, metallic

structures, etc.);

- information on areas where public assessment has been carried out in compliance with

Council Recommendation 1999/519/EC or national regulation;

- information on the nature of the field from any external sources should be obtained from the

operators of those sources. Examples of useful information are the frequency, the radiated

power, the type of service, and whether the transmissions are intermittent. However, it should

be noted that much of the detailed information can be commercially sensitive;
2) with regard to the site:

- the area controlled e.g. information on property, fencing, where the controlled area is bounded;

- the site map showing all facilities, e.g. buildings, towers, anchor cables, earth mat;

- the several areas:
- where a public assessment has been carried out in compliance with Council
Recommendation 1999/519/EC or national regulation;
- where workers have access without specific care;
- where workers only have access under specific circumstances;

3) with regard to power supply ELF emissions, information to collect is given in EN 50647;

4) with regard to the radio-frequency emissions, for each relevant source:

- the mechanical configuration of the antennas (e.g. geometric dimensions, construction

drawings, position in the mast);
- radiation pattern, polarization and gain of antennas;
- maximum and nominal transmitter power;
- frequency, type of modulation (e.g. AM, FM, COFDM), channel bandwidth;
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- feeder type and length, attenuation/meter, additional losses (combiners, patch panels, antenna

cables and power dividers);
5) with regard to scheduling:
- transmitting time table (especially for short wave, SW);
- permitted operating configuration.

Such information is collected in order to estimate the expected electromagnetic fields using different

calculation methods/tools. An accurate analysis of the data/results will allow appropriate planning of the

measurement campaign, in particular in relation to issues such as physical quantities to measure, which

instruments to use, location of critical points with high values of electromagnetic fields, reinforcements

or resonance are expected etc., if it is necessary to further protect workers who make the assessment

(see § 7.2).
6 Determination of exposure levels by calculation or measurement
6.1 General

This standard does not directly address product performance standards, which are intended to limit

electromagnetic field (EMF) emissions under specified test conditions.
6.2 Methodologies
6.2.1 General

In the near field, the electromagnetic field structure may be highly inhomogeneous, and there may be

substantial variations from the plane-wave impedance of 377 ohms; that is, there may be preponderant

electric fields in some regions and preponderant magnetic fields in others.
6.2.2 Exposure from power supplies

EN 50647 gives guidance for assessing 50 Hz power supplies and in particular criteria for power sources

which are deemed to comply without any further assessment.
At 50 Hz, the electric or the magnetic field are to be measured separately.
6.2.3 Exposure from transmitters from 9 kHz to 100 kHz
Methodologies of measurement and calculation are defined in EN 62226-2-1.
6.2.4 Exposure from transmitters from 100 kHz to 30 MHz
Methodologies of measurement and calculation are defined in:
–– 100 kHz to 3 MHz: EN 50413.
–– 3 MHz to 30 MHz: EN 50475;
Information can also be found in ITU-R BS.1698 [5].
6.2.5 Exposure from transmitters from 30 MHz to 40 GHz
Methodologies of measurement and calculation are defined in EN 50420.
Information can also be found in ITU-R BS.1698 [5].

7.2 gives the process for use of a broadband field meter in a mast. Assessment of both the electric field

strength and magnetic field strength may need to be performed.
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6.3 Additional considerations
6.3.1 Use of action levels

Compliance with the action levels will ensure compliance with the relevant exposure limit values. If the

measured or calculated value exceeds the action levels, it does not necessarily follow that the exposure

limit values will be exceeded.
6.3.2 Multiple exposure

With regard to simultaneous exposure to multiple frequency fields, it is important to identify multiple

sources of exposure or simultaneous exposure to multiple frequency fields and to use appropriate

methods of assessment, measurement and/or calculation capable of analysing the characteristics of the

waveforms and nature of biological interactions (see flowcharts in Figures 1 to 3 and Annex A).

Once identified, the combination of different frequency components should be carried out separately for

thermal effects and electrical stimulation.

The formulae in Annex A apply to the relevant frequencies under practical exposure situations and shall

be used to establish compliance to the action levels or exposure limit values for all the frequencies

together.
6.3.3 Polarization

To take in account the polarization and the incidence of signals, the field should be evaluated

isotropically. If probes with a single sensor element responding only to one field component are used,

they should be oriented to read the maximum value, or should be aligned in three mutually orthogonal

directions to measure separately the spatial components of the field.
6.3.4 Averaging
6.3.4.1 Time averaging

These following rules come from the ICNIRP Guidelines [11] and Directive 2013/35/EU.

Exposure limit value

– For frequencies up to 6 GHz: all SAR values are to be averaged over any 6 min period.

– For frequencies between 6 GHz and 10 GHz: Power densities are to be averaged over any 20 cm

of exposed area and any 6 min period.

– For frequencies between 10 GHz and 300 GHz: Power densities are to be averaged over any

2 1,05

20 cm of exposed area and any 68/f min period (where f is in GHz) to compensate for

progressively shorter penetration depth as the frequency increases.
Action level
2 2 2 2

– For frequencies between 100 kHz and 10 GHz: Seq, E , H , B and IL are to be averaged over any

6 min period.
2 2

– Particular case: For E , H , Seq in case of specific modulation (like FM and digital OFDM emissions

for instance), the field strength can be averaged over a lower period due to the constant power

transmitted.
2 2 2 1,05

– For frequencies exceeding 10 GHz: Seq, E , H , and B are to be averaged over any 68/f min

period (f in GHz).

NOTE The time averaging is applicable above 10 MHz provided that the allowable instantaneous and peak

exposure constraints are well respected.
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6.3.4.2 Spatial averaging

When the exposed worker is in a non-uniform field, spatial averaging of the field over the body is

permissible.

For frequencies above 100 kHz, where n measurements are made, the following equations apply:

1 
E ⋅ E (1)
avg i
i=1
1  
BB ⋅ (2)
avg  i
 i=1 
1 
HH ⋅ (3)
avg i
i=1
SS ⋅ (4)
avg ∑ i
i=1
where

Eavg, Bavg,Havg, are the spatially averaged values of the electric field strength, the magnetic flux

S density, the magnetic field strength and the power density;
avg

Ei, Bi,Hi,Si are the i measurement of the electric field strength, the magnetic flux density, the

magnetic field strength and the power density respectively.

If spatial averaging is carried out, then a minimum of 3 measurement points shall be used (one point of

these points shall be a maximum). However, where a source is localized within a distance of a few

centimetres from the body, simple averaging may not be adequate to ensure compliance with local

exposure limit values and so additional dosimetry is needed.
6.3.4.3 Time equivalent averaging

Spatial averaging in a typical situation such as an FM/TV mast, where a worker is moving in an EMF

produced by a constant intensity source, can be considered to be equivalent to time averaging on a

stationary worker from a source whose intensity varies with time.

The length of the averaging path is given by the product of the averaging time, (6 min), and the velocity

of movement of the worker along that path. An assessment of the appropriate speed needs to be made,

considering the type of mast.

The relationship between the exposure time and the permissible exposure level is given by the following

formulas:
1 2
(5)
E = ET.
( )
avg ∑ i exp,i
i=1
avg
1 2
(6)
B = B .T
( )
avg ∑ i exp,i
i=1
avg
1  2 
(7)
H = HT.
( )
avg ∑ i exp,i
 i=1 
avg
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S = ST⋅ (8)
avg ∑ i exp,i
i=1
avg
where
T =T
∑ exp,i avg
i=1
Tavg = 6 min (below 10 GHz);

E , B , S are averaged electric field strength, magnetic field strength or power density to be

avg avg avg
compared to relevant ALs;

E , B , S are electric field strength, magnetic field strength and power density averaged on

i i i
Texp,i;
T is duration for that interval related to E , B or S .
exp,i i i i

For example, consider a worker who moves in a FM/TV mast with a velocity of 10 m per minute, then

the integration path is 60 m. A typical use of this rule is the case when a worker climbs a ladder near

several stages of an antenna located between 2 platforms.

For instance, if the field strength between these platforms is locally twice the action value, then the

worker can be allowed to pass through this area if he takes no longer than (6/2 = 1,5 min). Therefore,

he would have climbed a height of around 15 m during this 1 min 30 s. This is possible, providing that

below and above this area, i.e. on the platforms, the exposure is negligible.

NOTE 1 The time averaging is applicable for the thermal effects which apply for frequencies above 100 kHz

provided that the allowable instantaneous and peak exposure constrains are well respected. The allowable

instantaneous and peak exposure values are given in the ICNIRP Guidelines [11] at the Note 5 of the Table 6.

NOTE 2 In the previous example the field strength cannot reasonably exceed twice the action level because of

the time necessary to climb between the 2 platforms.
6.3.5 Uncertainties

As part of the assessment process, measurements or calculations shall be associated with an

uncertainty evaluation. Assessment uncertainty shall be reported and it shall be taken into account when

performing compliance evaluation.

Information on how to assess measurement and calculation uncertainties are given in EN 50413.

7 Zoning of exposure work place
7.1 General

If an employer wants to identify work places where exposure may exceed those recommended for the

general public, a zoning concept can be used. To facilitate this, it is proposed a simple zoning of the

workplace such as that described in the following paragraph could be applied.

These are not intended to be strict or “hard” boundaries corresponding to the exact locations that

different exposure levels might be exceeded. Instead they might correspond, for example, to existing

areas of a work place:

– Zone 0: work place in which all exposure levels comply with the relevant general public basic

restrictions as defined in Council Recommendation 1999/519/EC.

– Zone 1: work place where exposure may be greater than the general public limit but will be

compliant with the worker exposure limit values defined in Directive 2013/35/EU. It can be split into

sub-zones:
- Zone 1a: compliance with all action levels;
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- Zone 1x: compliance with Directive Annex III action levels and Annex II high action levels

(Areas where frequencies below 10 MHz are present);

- Zone 1b: compliance with the exposure limit values but not with the action levels.

– Zone 2: work place where exposure may be greater than the worker exposure limit value.

Various zones (as des
...

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