Transcript International Telecommunication Union

ITU-T Workshop on
Delivering Good Quality Telecommunication Service
in a Safe Environment in Africa
(Nairobi, Kenya, 26 July – 27 July 2010 )
ITU-T SG5 activities on EMF
Ahmed ZEDDAM,
ITU-T SG5 Chair
France Telecom Orange
Nairobi, Kenya, 26 – 27July 2010
Outline

Structure and Mandate of ITU-T/SG5

Objective of ITU-T/SG5

Q3/5 : Human exposure to
electromagnetic fields (EMFs) due to
radio systems and mobile equipment
Main tasks & Responsibility
Recommendations under the scope of Q3
Resolution 72 of ITU-T

Conclusion
Nairobi, Kenya, 26 – 27 July 2010
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Structure of ITU-T SG5
ITU-T SG5
“Environment and climate change ”
Q.14 Terminology
WP1/5
Damage prevention
and safety
7 Questions
WP2/5
Electromagnetic fields:
emission, immunity and
human exposure
7 Questions
WP3/5
ICT and climate
change
5 Questions
Question 3/5
Human exposure to EMFs
Nairobi, Kenya, 26 – 27 July 2010
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SG 5 Keywords
WP 1/5
Equipment
Resistibility
Lightning
protection
Earthing &
Bonding
Electromagnetic
interference
from power and
traction systems
Safety
Nairobi, Kenya, 26 – 27 July 2010
WP 2/5
Human
exposure to
e.m. fields
EMC
Emission
Immunity
Electromagn
etic security
WP 3/5
ICT & climate
change
Methodology
Power feeding
systems
Energy
efficiency
Environmental
protection,
recycling
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SG 5 Mandate
Study Group 5 is responsible for :
Studies relating to protection of telecommunication
networks and equipment from interference and
lightning;
Studies relating to electromagnetic compatibility
(EMC), to safety and to health effects connected
with electromagnetic fields produced by
telecommunication installations and devices,
including cellular phones ;
Studies on the existing copper network outside
plant and related indoor installations.
Studies on ICT & Climate Change
Nairobi, Kenya, 26 – 27 July 2010
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Meaning of the Mandate: Example
Study Electromagnetic Phenomena which can cause
damages or disturbances to telecommunication
installation or injury to people (telecommunication
personnel and service users) or health effect to population
Power line
Telecommunication centre
Lightning
Switching
equipment
Radio
station
Mobile phone
Nairobi, Kenya, 26 – 27 July 2010
Subscriber premises
Remote site
MDF
Telecom line
ICT Impact on environment
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Objective
Study environmental issues to define PROTECTIVE
MEASURES, INSTALLATION TECHNIQUES &
METHODOLOGIES by means :
Recommendations: K & L-series
Directives
Handbooks
Lightning Handbook, Earthing Handbook
Measuring Handbook, Mitigation Handbook
Handbooks on ICT & Climate change

Recommendations for limiting the RISK of :
Damages to telecommunication installation and equipment
Disturbances to and from telecommunication systems
Injury to people : Safety & Human exposure to e.m. fields (EMF)
produced by telecommunication installations (Q3/5)

Recommendations on :
 Methodologies for evaluating the ICT effects on climate change,
 Energy efficiency of the power feeding systems
 Methodologies to reduce environmental effects such as recycling
Nairobi, Kenya, 26 – 27 July 2010
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ITU-T SG5
Question 3/5
"Human exposure to
electromagnetic fields (EMFs) due
to radio systems and mobile
equipment"
Rapporteur: Fryderyk Lewicki (Poland)
Associate Rapporteur: Tariq Alamri (Saudi Arabia)
Nairobi, Kenya, 26 – 27 July 2010
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Main tasks & Responsibility
Assignment of the exposure limits
considered as safe for people - Medical
bodies responsibility: WHO, ICNIRP,
National medical authorities
Standards for evaluation and
measurement of exposure level - IEC,
CENELEC, COST 281, National standardization
committees
Best practice, Implementation and
guidance on telecommunication
installations - ITU-T SG5
Nairobi, Kenya, 26 – 27 July 2010
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ITU-T Study Group 5
Question 3/5 : Human exposure to
electromagnetic fields (EMF) due to
radio systems and mobile
equipment
 Guidance for the
telecommunication sector
 Collaboration with other
standardization bodies (IEC,
CENELEC, WHO) in order to avoid
duplication of work
 Support to developing countries –
Resolution 72
Nairobi, Kenya, 26 – 27 July 2010
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History of Study on EMF in ITU-T
New Question on EMF has started on 1996
and studying for 3 periods (12 years).
Three Recommendations have established
and revised since then :
K.52: Guidance on complying with limits
for human exposure to electromagnetic
fields
K.61: Guidance on measurement and
numerical prediction of electromagnetic
fields for compliance with human exposure
limits for telecommunication installations
K.70: Mitigation techniques to limit human
exposure to EMFs in the vicinity of
radiocommunication stations
Nairobi, Kenya, 26 – 27 July 2010
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ITU-T Recommendations related to
human exposure to E.M. fields
ITU-T Recommendations K.52 and K.61
•guidance on complying with safety limits for human exposure to e.m. fields from a
telecommunication installation or mobile handset
•adopts a step-by-step approach to determine an exceedance zone (within which field
exceeds reference limits)
•compliance achieved if exceedance zone is not accessible to personnel under normal
conditions
ITU-T Recommendation K.70
•Mitigation Techniques to limit human exposure to EM fields in the vicinity of
radiocommunication stations
•Software provided that implements methodology
Nairobi, Kenya, 26 – 27 July 2010
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ITU Recommendations related to
human exposure
E.M Radiation from a
telecommunication installation
E.M. Safety Limits
Recommendation ITU-R BS.1698
ITU-T Recommendation K.52
ITU-T Recommendation K.61
ITU-T Recommendation K.70
Assessment of hazard and need Mitigation Techniques to
limit human exposure
for precautionary measures
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WTSA 08: Resolution 72
"Measurement concerns related to human
exposure to electromagnetic fields"
o
Recognizing that some publications about EMF
effects on health create doubt among the
population, in particular in developing countries
o
Resolves to invite ITU-T, in particular Study Group
5, to expand and accelerate its work and support
o
Invites to contribute actively to the work of Study
Group 5 in providing relevant and timely
information in order to assist developing countries
in providing information and addressing
measurement concerns related to RF exposure
Nairobi, Kenya, 26 – 27 July 2010
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WTSA 08: Resolution 72
"Measurement concerns related to human
exposure to electromagnetic fields"
 Recommendation ITU-T K.guide will be written with
Resolution 72 taken into account
 with big parts concerning EMF measurement
 with many examples
 with comparison measurement/calculation
 Examples of action in accordance with Resolution 72


Technical session on EMF during SG5 meeting (May 2009)
Workshop on EMF
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ITU-T Recommendation K.guide
"Guidance on how to manage human exposure to EMF’s"
 Guidance on how to handle the problem of the
human exposure assessment in order to help the
user to apply existing standards
 Procedures how to evaluate exposure
 by measurement
 by calculations
 Procedures how to show the compliance with
exposure limits
 This Recommendation will be written in the
possibly simple way and will be easy to understand
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Conclusion (1)

Concerning human exposure to EMF:
ITU-T SG5 takes part in standardization by
preparing Recommendations, which give
appropriate guidance for administrations
and telecommunication operators and
supports developing countries
(Resolution 72)
ITU-T activity is complementary to the
works carried out in other international
standardization bodies involved in this
subject - there is no duplication of work
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Conclusion (2)
All the SG5 activities are reported in our web
site: http://www.itu.int/ITU-
/studygroups/com05/index.asp
The vast majority of all Recommendations are available in
electronic (PDF) form free of charge
For a complete picture of SG 5 Publications:
Guide to the use of ITU-TSG5 publications

The document is aimed at telecommunications equipment
designers and operators and will also be very helpful for
users in developing countries
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Thank you
Nairobi, Kenya, 26 – 27 July 2010
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