Basic standard for the in-situ assessment of a broadcast site related to general public exposure to radio frequency electromagnetic fields

This document specifies the method for assessing overall exposure from all fixed radio frequency sources at a broadcast site. This assessment can be applied at any time but is carried out when the exposure situation changes in or around the aforementioned site.
This document plays an essential role in the coordination of different stakeholders, with respect to ensuring EMF exposure compliance in and around a broadcast site especially for equipment installed within the site.

Grundnorm für die Bewertung eines Rundfunkstandorts vor Ort in Bezug auf die Exposition der Allgemeinbevölkerung gegenüber hochfrequenten elektromagnetischen Feldern

Norme de base pour l'évaluation in-situ de l'exposition du public aux champs électromagnétiques de radiofréquence d'un site de radiodiffusion

Le présent document spécifie la méthode à utiliser pour évaluer l’exposition globale à des sources fixes de fréquences radio sur un site de radiodiffusion. Cette évaluation peut être effectuée à tout moment, mais elle est réalisée en cas de modification de la situation de l’exposition à l’intérieur ou autour du site susmentionné.
Le présent document joue un rôle essentiel dans la coordination des différentes parties prenantes en vue d’assurer la conformité à l’exposition aux champs électromagnétiques à l’intérieur et autour d’un site de radiodiffusion, en particulier pour le matériel installé au sein du site.

Osnovni standard za terensko ocenjevanje mesta oddajanja v zvezi z izpostavljenostjo ljudi elektromagnetnemu sevanju

General Information

Status
Published
Public Enquiry End Date
30-Dec-2019
Publication Date
15-Jul-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Jun-2021
Due Date
09-Aug-2021
Completion Date
16-Jul-2021

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SLOVENSKI STANDARD
SIST EN 50554:2021
01-oktober-2021
Nadomešča:
SIST EN 50554:2011
Osnovni standard za terensko ocenjevanje mesta oddajanja v zvezi z
izpostavljenostjo ljudi elektromagnetnemu sevanju

Basic standard for the in-situ assessment of a broadcast site related to general public

exposure to radio frequency electromagnetic fields
Grundnorm für die Bewertung eines Rundfunkstandorts vor Ort in Bezug auf die
Exposition der Allgemeinbevölkerung gegenüber hochfrequenten elektromagnetischen
Feldern
Norme de base pour l'évaluation in-situ de l'exposition du public aux champs
électromagnétiques de radiofréquence d'un site de radiodiffusion
Ta slovenski standard je istoveten z: EN 50554:2021
ICS:
17.240 Merjenje sevanja Radiation measurements
SIST EN 50554:2021 en

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

---------------------- Page: 1 ----------------------
SIST EN 50554:2021
---------------------- Page: 2 ----------------------
SIST EN 50554:2021
EUROPEAN STANDARD EN 50554
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2021
ICS 17.240 Supersedes EN 50554:2010 and all of its amendments
and corrigenda (if any)
English Version
Basic standard for the in-situ assessment of exposure to radio
frequency electromagnetic fields in the vicinity of a broadcast
site

Norme de base pour l'évaluation in-situ de l'exposition du Grundnorm für die Bewertung eines Rundfunkstandorts vor

public aux champs électromagnétiques de radiofréquence Ort in Bezug auf die Exposition der Allgemeinbevölkerung

aux environs d'un site de radiodiffusion gegenüber hochfrequenten elektromagnetischen Feldern

This European Standard was approved by CENELEC on 2021-04-26. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50554:2021 E
---------------------- Page: 3 ----------------------
SIST EN 50554:2021
EN 50554:2021 (E)
Contents Page

European foreword ......................................................................................................................... 4

1 Scope ....................................................................................................................................... 5

2 Normative references ............................................................................................................. 5

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

4 Assessment fundamentals .................................................................................................... 7

4.1 Level of protection .......................................................................................................... 7

4.2 Stakeholders ................................................................................................................... 7

4.3 Simultaneous exposure to electromagnetic fields at different frequencies .................... 8

4.4 Area to perform a detailed assessment .......................................................................... 8

5 Assessment methodology in the relevant domain when the exposure situation changes

.................................................................................................................................................. 9

5.1 Introduction ..................................................................................................................... 9

5.2 Determination of the threshold distance (TD)................................................................. 9

5.3 Area definition ................................................................................................................. 9

Figure 1 — Area definition ........................................................................................................... 10

5.4 Assessment .................................................................................................................. 10

5.5 How to take inaccuracy into account ............................................................................ 11

5.6 Report of the assessment............................................................................................. 11

Annex A (informative) Example of a simple method for estimation of the threshold distance

from a broadcast site ........................................................................................................... 13

Figure A.1 — Vertical pattern of antennas ................................................................................. 14

Figure A.2 — Threshold distances for two antennas considered together on the left side and

two antennas considered separately on the right side ..................................................... 15

Annex B (informative) Assessment procedure in Germany and in Italy ............................... 16

B.1 Assessment procedure in Germany ................................................................................... 16

B.2 Assessment procedure in Italy ............................................................................................ 16

B.2.1 Assessment procedure in Italy: area A .................................................................... 16

B.2.2 Assessment procedure in Italy: areas B and C ....................................................... 17

Bibliography .................................................................................................................................. 19

---------------------- Page: 4 ----------------------
SIST EN 50554:2021
EN 50554:2021 (E)
European foreword

This document (EN 50554:2021) 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 to be 2022– 2022–04–26
implemented at national level by publication of 04–26
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024–04–26
conflicting with this document have to be
withdrawn

This document supersedes EN 50554:2010 and all of its amendments and corrigenda (if any).

EN 50554:2021 includes the following significant technical changes with respect to EN 50554:2010:

— consideration of the new Directive 2013/35 /EU related to workers exposure;
— update of referenced standards;
— provision of a method to determine the relevant domain.

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.

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SIST EN 50554:2021
EN 50554:2021 (E)
1 Scope

This document specifies the method for assessing overall exposure from all fixed radio frequency

sources at a broadcast site. This assessment can be applied at any time but is carried out when the

exposure situation changes in or around the aforementioned site.

This document can play an essential role in the coordination of different stakeholders, with respect to

ensuring EMF exposure compliance in the vicinity of a broadcast site especially for equipment installed

within the site.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

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

EN 50496, Determination of workers’ exposure to electromagnetic fields and assessment of risk at a

broadcast site

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

magnetic and electromagnetic fields (0 Hz - 300 GHz)

EN 62232:2017, Determination of RF field strength, power density and SAR in the vicinity of

radiocommunication base stations for the purpose of evaluating human exposure (IEC 62232:2017)

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, L199, of 1999-7-30, p.59-70

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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
basic restriction

restriction on exposure to static and time-varying electric, magnetic, and electromagnetic fields that is

based directly on established health effects
3.2
broadcasting service

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

public

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

transmission.
3.3
broadcast site
site where one or more broadcast transmitters are operated
3.4
controlled area

area where access is controlled by the operator and is not accessible to the public

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SIST EN 50554:2021
EN 50554:2021 (E)
3.5
exposure ratio
for an individual source, between 100 kHz to 10 GHz:
   
ER= MAX , ;
   
EL HL
   
between 10 MHz and 300 GHz:
Seq
ER=
where
ER is the exposure ratio at frequency f of the source;
EL is the E-field reference level at frequency f;
HL is the H-field reference level at frequency f;
E is the assessed E-field at frequency f for the source;
H is the assessed H-field at frequency f for the source;
SL is the Equivalent plane wave power density reference level at frequency f;

Seq is the assessed Equivalent plane wave power density at frequency f for the source

Note 1 to entry: Assessed means measured, calculated or simulated.
3.6
reference level

provided for the purpose of comparison with values of measured quantities and respect

of recommended levels will ensure respect of basic restrictions

Note 1 to entry: If measured values are higher than reference levels, it does not necessarily follow that the basic

restrictions have been exceeded, but a more detailed analysis is necessary to assess compliance with the basic

restrictions.

Note 2 to entry: In the frequency range from 100 kHz to 10 GHz, the physical quantity used is electric field strength,

and magnetic field strength. In the frequency range from 10 MHz to 300 GHz, the equivalent plane wave power

density can also be used.
3.7
relevant distance
horizontal distance from the antenna to the boundary of the relevant domain
3.8
relevant domain

in the absence of a national or local definition, domain surrounding the site where the TER (3.13)

exceeds 0,05 at some height

Note to entry 1: The ratio of 0,05 is from EN 62232:2017, 6.2 and EN 50499:2019, D.2.2.3.

---------------------- Page: 7 ----------------------
SIST EN 50554:2021
EN 50554:2021 (E)
3.9
relevant source

principle of relevance establishes the conditions under which a radio source is considered relevant such

that account is taken of the contribution of that source when assessing RF exposure at an assessed

location

Note 1 to entry: In the absence of a national or local definition, the relevant source is a fixed radio source, in the

frequency range 100 kHz to 300 GHz, which has an exposure ratio of more than 0,05 at an assessed location.

3.10
site operator
party controlling access to the controlled area
3.11
stakeholder

party involved in the process of this document in accordance with the local or national legislation

Note 1 to entry: More than one stakeholder can be concerned (national authority, licence holder, broadcaster, site

operator, etc.).
3.12
threshold distance

minimum vertical or horizontal distance in a given direction, from the antenna, at which compliance with

reference levels which, in the absence of national or local definition, are established by Council

Recommendation 1999/519/EC, is achieved at all heights when considering emissions from the site

alone
3.13
total exposure ratio
TER
sum of exposure ratios:
TER= ER
where ER is the exposure ratio of the source i
4 Assessment fundamentals
4.1 Level of protection

NOTE National or local relevant regulations provide information on the level of protection for applying this

document, expressed in basic restrictions and/or reference levels.
4.2 Stakeholders

NOTE National or local relevant regulations provide information on the stakeholders responsible for applying

this document.
Potentially involved stakeholders:
a) site owner;
b) licence holder;
c) national authority;
---------------------- Page: 8 ----------------------
SIST EN 50554:2021
EN 50554:2021 (E)
d) technical operator;
e) community representatives;
f) broadcaster;
g) local authority;
h) content provider;
i) party originating the change;
j) assessment manager;
k) measurement laboratory.
4.3 Simultaneous exposure to electromagnetic fields at different frequencies

Simultaneous exposure to electromagnetic fields of different frequencies is the common case at

broadcast sites and shall be taken into account during the exposure assessment.

If a national or local relevant regulation treating multiple sources is available, then this regulation applies.

If not, a threshold level shall be set, linked with the level of protection: each relevant source needs to be

included to evaluate its influence.
4.4 Area to perform a detailed assessment
4.4.1 General

The emissions from a broadcast site only need to be taken into account within its relevant domain.

Within the relevant domain every place where the public can access needs to be assessed.

4.4.2 Determination of the relevant domain

In far field conditions, the relevant distance (RD) for each source can be deduced from the threshold

distance (TD) if exists:
RD SL 1
S 0,05
22 2
RD EL HL 1
22 2
0,05
TD E H
RD RD
RD 45,⋅ TD
0,05

Where S and SL are respectively the Equivalent plane wave power density at the relevant distance

and the Equivalent plane wave power density reference level (W/m ).

E and EL are respectively the E field intensity at the relevant distance and the E field reference level

(V/m).
= =
===
---------------------- Page: 9 ----------------------
SIST EN 50554:2021
EN 50554:2021 (E)

H and HL are respectively the H field intensity at the relevant distance and the H field reference

level (A/m).
RD can be also calculated from the EIRP using the following formula:
EIRP EIRP
RD 13,⋅
0,05⋅⋅SL 4π SL
RD of all sources of the site can be calculated using the next formula:
EIRP
RD 13,⋅

Where EIRP is the EIRP of the source i and SL is the equivalent plane wave power density reference

i i
level at frequency of source i.
More information can be found in EN 62232.
4.4.3 Determination of relevant sources
The relevant sources can be determined by calculation or measurement.

Within the relevant domain, the ER of every source is calculated or measured separately. If the ER of a

source exceeds 0,05 then it is considered as relevant.
More information on calculation and measurement can be found in EN 62232.
5 Assessment methodology in the relevant domain when the exposure
situation changes
5.1 Introduction

Change is defined as a variation in the exposure situation which has not been previously assessed.

5.2 Determination of the threshold distance (TD)

EN 50413 and EN 62232 methodology shall be used to determine the threshold distance using the

radiation pattern of the antennas.

The TD shall be determined by the broadcast operator of the highest cumulative authorized ERP value

on the site.

In the absence of data to carry out the required calculation, the threshold distance can be defined by

using the worst-case configuration of the services.

An example of a simple method for estimation of TD from a broadcast site is described in Annex A.

5.3 Area definition
Assessment of the overall exposure can be made by many stakeholders.
The analysis is split into three areas:
— area A: inside the controlled area;

— area B: outside the controlled area of the site but within the threshold distance;

— area C: outside the horizontal threshold distance but inside the relevant domain.

NOTE See Figure 1.
= =
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SIST EN 50554:2021
EN 50554:2021 (E)
Figure 1 — Area definition

In the absence of national rules, these areas are used to define the parties responsible for collating the

relevant data and also for carrying out the assessment.
5.4 Assessment
5.4.1 General

The stakeholder in charge of the assessment is defined in accordance with national rules (see Annex B

for German and Italian examples). This responsible stakeholder might not be unique for al

...

SLOVENSKI STANDARD
oSIST prEN 50554:2019
01-december-2019
Osnovni standard za terensko ocenjevanje mesta oddajanja v zvezi z
izpostavljenostjo ljudi elektromagnetnemu sevanju

Basic standard for the in-situ assessment of a broadcast site related to general public

exposure to radio frequency electromagnetic fields
Grundnorm für die Bewertung eines Rundfunkstandorts vor Ort in Bezug auf die
Exposition der Allgemeinbevölkerung gegenüber hochfrequenten elektromagnetischen
Feldern
Norme de base pour l'évaluation in-situ de l'exposition du public aux champs
électromagnétiques de radiofréquence d'un site de radiodiffusion
Ta slovenski standard je istoveten z: prEN 50554
ICS:
17.240 Merjenje sevanja Radiation measurements
oSIST prEN 50554:2019 en

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

---------------------- Page: 1 ----------------------
oSIST prEN 50554:2019
---------------------- Page: 2 ----------------------
oSIST prEN 50554:2019
EUROPEAN STANDARD DRAFT
prEN 50554
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2019
ICS 17.240 Will supersede EN 50554:2010 and all of its
amendments and corrigenda (if any)
English Version
Basic standard for the in-situ assessment of a broadcast site
related to general public exposure to radio frequency
electromagnetic fields

Norme de base pour l'évaluation in-situ de l'exposition du Grundnorm für die Bewertung eines Rundfunkstandorts vor

public aux champs électromagnétiques de radiofréquence Ort in Bezug auf die Exposition der Allgemeinbevölkerung

d'un site de radiodiffusion gegenüber hochfrequenten elektromagnetischen Feldern
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-01-03.
It has been drawn up by CLC/TC 106X.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CENELEC 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
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

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Project: 67142 Ref. No. prEN 50554 E
---------------------- Page: 3 ----------------------
oSIST prEN 50554:2019
prEN 50554:2019 (E)
1C ontents Page

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

3 1 Scope ....................................................................................................................................... 4

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

5 3 Terms and definitions ............................................................................................................ 4

6 4 Assessment fundamentals .................................................................................................... 6

7 4.1 Level of protection .......................................................................................................... 6

8 4.2 Stakeholders ................................................................................................................... 6

9 4.3 Simultaneous exposure to electromagnetic fields at different frequencies .................... 7

10 4.4 Area to perform a detailed assessment .......................................................................... 7

11 4.4.1 General .............................................................................................................. 7

12 4.4.2 Determination of the relevant domain ................................................................ 7

13 4.4.3 Determination of relevant sources ..................................................................... 8

14 5 Assessment methodology in the relevant domain when the exposure situation changes

15 .................................................................................................................................................. 8

16 5.1 Introduction ..................................................................................................................... 8

17 5.2 Determination of the Threshold Distance (TD) ............................................................... 8

18 5.3 Area definition ................................................................................................................. 8

19 5.4 Assessment .................................................................................................................... 9

20 5.4.1 General .............................................................................................................. 9

21 5.4.2 For area A .......................................................................................................... 9

22 5.4.3 For area B .......................................................................................................... 9

23 5.4.4 For area C ........................................................................................................ 10

24 5.5 How to take inaccuracy into account ............................................................................ 10

25 5.6 Report of the assessment............................................................................................. 10

26 Annex A (informative) Example of a simple method for estimation of the safety distance

27 from a broadcast site ........................................................................................................... 12

28 Annex B (informative) Assessment procedure in Germany and in Italy ............................... 15

29 Bibliography .................................................................................................................................. 18

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oSIST prEN 50554:2019
prEN 50554:2019 (E)
31 European foreword

32 This document (prEN 50554:2019) has been prepared by CLC/TC 106X “Electromagnetic fields in the

33 human environment”.
34 This document is currently submitted to the Enquiry.
35 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be
(to be confirmed or
withdrawn modified when voting)

36 This document will supersede EN 50554:2010 and all of its amendments and corrigenda (if any).

---------------------- Page: 5 ----------------------
oSIST prEN 50554:2019
prEN 50554:2019 (E)
37 1 Scope

38 This document specifies the method for assessing overall exposure from all fixed radio frequency

39 sources at a broadcast site. This assessment can be applied at any time but is carried out when the

40 exposure situation changes in or around the aforementioned site.

41 This document plays an essential role in the coordination of different stakeholders, with respect to

42 ensuring EMF exposure compliance in and around a broadcast site especially for equipment installed

43 within the site.
44 2 Normative references

45 The following documents are referred to in the text in such a way that some or all of their content

46 constitutes requirements of this document. For dated references, only the edition cited applies. For

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

48 EN 50496, Determination of workers' exposure to electromagnetic fields and assessment of risk at a

49 broadcast site
50 3 Terms and definitions
51 For the purposes of this document, the following terms and definitions apply.

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

53 — IEC Electropedia: available at http://www.electropedia.org/
54 — ISO Online browsing platform: available at http://www.iso.org/obp
55 3.1
56 basic restriction

57 restriction on exposure to time-varying and static electric, magnetic, and electromagnetic fields that is

58 based directly on established health effects

59 Note 1 to entry: In the frequency range from 100 kHz to 10 GHz, the physical quantity used is the specific

60 absorption rate. Between 10 GHz and 40 GHz, the physical quantity is the power density.

61 3.2
62 broadcasting service

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

64 public

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

66 transmission.
67 3.3
68 broadcast site
69 site where one or more broadcast transmitters are operated
70 3.4
71 controlled area

72 area in which the operator may decide who is permitted to enter or remain or an area which, due to

73 actual circumstances, the public is prohibited from entering
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oSIST prEN 50554:2019
prEN 50554:2019 (E)
74 3.5
75 exposure ratio
76 ER
77 for an individual source, between 100 kHz to 10 GHz:
   
78 ER= MAX , ;
   
EL HL
   
79 between 10 MHz and 40 GHz:
80 ER=
81 where
ER is the exposure ratio at frequency f of the source;
EL is the investigation E-field reference level at frequency f;
HL is the investigation H-field reference level at frequency f;
E is the assessed E-field at frequency f for the source;
H is the assessed H-field at frequency f for the source;
SL is the Equivalent plane wave power density reference level at frequency f;

S is the assessed Equivalent plane wave power density at frequency f for the source

82 3.6
83 reference level

84 level of exposure provided for comparison with measured values of physical quantities

85 Note 1 to entry: Compliance with all reference levels given in the Council Recommendation 1999/519/EC will

86 ensure compliance with basic restrictions.

87 Note 2 to entry: If measured values are higher than reference levels, it does not necessarily follow that the basic

88 restrictions have been exceeded, but a more detailed analysis is necessary to assess compliance with the basic

89 restrictions.

90 Note 3 to entry: In the frequency range from 100 kHz to 10 GHz, the physical quantity used is electric field strength,

91 and magnetic field strength. In the frequency range from 10 MHz to 40 GHz, the equivalent plane wave power

92 density can also be used.
93 3.7
94 relevant domain

95 in the absence of a national or local definition, domain surrounding the site where the TER (3.12) exceed

96 0,05 at any height
97 3.8
98 relevant source

99 principle of relevance establishes the conditions under which a radio source is considered relevant such

100 that account has to be taken of the contribution of that source when assessing RF exposure

101 Note 1 to entry: In the absence of a national or local definition, the relevant source is a fixed radio source, in the

102 frequency range 100 kHz to 40 GHz, which has an exposure ratio more than 0,05 at an examinated location.

103 3.9
104 site operator
105 party controlling access to the controlled area
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prEN 50554:2019 (E)
106 3.10
107 stakeholder
108 SH

109 party involved in the process of this document in accordance with the local or national legislation

110 Note 1 to entry: More than one stakeholder can be concerned (national authority, licence holder, broadcaster, site

111 operator, etc.).
112 3.11
113 threshold distance
114 TD

115 minimum distance in a given direction, beginning from the boundary of the controlled area, at which

116 compliance with reference level is achieved at all heights when considering emissions from the site

117 alone
118 3.12
119 Total Exposure Ratio
120 TER
121 total exposure ratio is the sum of exposure ratios:
TER= ER
122
123 where ER is the exposure ratio of the source i
124 4 Assessment fundamentals
125 4.1 Level of protection

126 National or local relevant regulations provide information on the level of protection for applying this

127 document, expressed in basic restrictions and/or reference levels.
128 4.2 Stakeholders

129 National or local relevant regulations provide information on the stakeholders responsible for applying

130 this document.
131 Potentially involved stakeholders:
132 a) site owner;
133 b) licence holder;
134 c) national authority;
135 d) technical operator;
136 e) community representatives;
137 f) broadcaster;
138 g) local authority;
139 h) content provider;
140 i) party originating the change;
141 j) assessment manager;
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oSIST prEN 50554:2019
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142 k) measurement laboratory.
143 4.3 Simultaneous exposure to electromagnetic fields at different frequencies

144 Simultaneous exposure to electromagnetic fields of different frequencies is the common case at

145 broadcast sites and shall be taken into account during the public and worker exposure assessment.

146 If a national or local relevant regulation treating multiple sources is available, then this regulation must

147 be applied. If not, a threshold level shall be set, linked with the level of protection: each relevant source

148 needs to be included to evaluate its influence.
149 4.4 Area to perform a detailed assessment
150 4.4.1 General

151 The emissions from a broadcast site only need to be taken into account within its relevant domain.

152 Within the relevant domain every place where the public can access needs to be assessed.

153 4.4.2 Determination of the relevant domain

154 Domain surrounding the site where the total exposure ratio (TER) is more than 0,05.

155 The relevant distance (RD) is the distance to the boundary of the relevant domain. In far field conditions,

156 the relevant distance for each source can be can deduced from the threshold distance (TD) if exists:

RD SL 1
157
S 0,05
158 Or
22 2
RD EL HL 1
159
22 2
0,05
TD E H
RD RD
160 RD 45, TD
0,05

161 Where S and SL are respectively the Equivalent plane wave power density at the relevant distance

162 and the Equivalent plane wave power density reference level (W/m ).

163 E and EL are respectively the E field intensity at the relevant distance and the E field reference level

164 (V/m).

165 H and HL are respectively the H field intensity at the relevant distance and the E field reference level

166 (A/m).
167 RD can be also calculated from the EIRP using the following formula:
EIRP EIRP
168 RD 13,
0,05SL4π SL
169 RD of all sources of the site can be calculated using the next formula:
EIRP
170 RD= 13,
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171 Where EIRPi is the EIRP of the source i and SL is the equivalent plane wave power density reference

172 level at frequency of source i.
173 More information can be found in EN 62232.
174 4.4.3 Determination of relevant sources
175 The relevant sources can be determined by calculation or measurement.

176 Within the relevant domain, the ER of every source is calculated or measured separately. If the ER of a

177 source exceed 0,05 then is considered as relevant.
178 More information on calculation and measurement can be found in EN 62232.
179 5 Assessment methodology in the relevant domain when the exposure
180 situation changes
181 5.1 Introduction

182 Change is defined as a variation in the exposure situation which has not been previously assessed.

183 5.2 Determination of the Threshold Distance (TD)

184 The TD is the minimum distance out from the boundary of the controlled area at which compliance with

185 the recommendation 1999/519/EC reference level is achived at all heights when considering emissions

186 from the site alone. EN 50413 and EN 62232 give the methodology for determining the threshold

187 distance using the radiation pattern of the antennas.

188 The TD shall be determined by the broadcast operator of the highest authorized ERP value on the site.

189 In the absence of data to carry out the required calculation, the threshold distance can be defined by

190 using the worst-case configuration of the services.

191 An example of a simple method for estimation of the TD from a broadcast site is described in Annex A.

192 5.3 Area definition
193 Assessment of the overall exposure can be made by many stakeholders.
194 The analysis is split into three areas:
195 — area A: inside the controlled area;

196 — area B: outside the controlled area of the site but within the threshold distance;

197 — area C: outside the threshold distance but inside the relevant domain.
198 NOTE See Figure 1.
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199
200 Figure 1 — Area definition

201 In the absence of national rules, these areas are used to define the parties responsible for collating the

202 relevant data and also for carrying out the assessment.
203 5.4 Assessment
204 5.4.1 General

205 The stakeholder in charge of the assessment is defined in accordance with national rules (see Annex B

206 for German and Italian examples). This responsible stakeholder might not be unique for all areas. As an

207 example, the result of the assessment in area A, carried out by a site owner, could be an input to a

208 telecom operator assessing areas A, B and C following a change in its equipment configuration.

209 5.4.2 For area A

210 The stakeholders in charge of the assessment will be the site operator or the broadcast operator.

211 The site operator is responsible for gathering the data required for the assessment within area A from:

212 — characteris
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