adoption of icnirp in india

7/28/2019 Adoption of ICNIRP in India

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Adopt ion of ICNIRP guidel ines

by Ind ian Telecom Secto r


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ICNIRP

Terms & References of ICNIRP

Develops International guidelines on limiting exposure to non-ionizing radiation that and independent and science based

Provides guidance and advice on health hazards of non-ionizingradiations

Provides scientific guidance and recommendations on protection

from non-ionizing radiation exposure ICNIRP guidelines are continuously revised and updated on the

basis of new scientific findings

ICNIRP 1998 guidelines used by many countries.

International Commission for Non-Ionizing Radiation Protection. Independent scientific group recognized by the WHO.

Recommended by the International Telecommunications Union

(ITU) and the European Union.

Applied to both handsets and base stations.


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EMF Regulations and Limits Base Stations

ITU & WHO recommends ICNIRP for countries without regulations


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CELLULAR TOWERS WORK IN THE NON-IONISING SPECTRUM

Gamma RaysMobile Phones

X-RaysUVInfrared

AM RadioPower Lines

RF Transmission

10 GHz100 MHz

1 KHz 100 KHz 10 MHz 1 GHz 100 GHz

Visible

SatelliteTV

1 MHz

Frequency

100 Hz 10 KHz

FM Radio

Ionising Radiation

Non-IonisingRadiation

As you move towards the higher side of the spectrum , the

electrom agnetic energy & penetrat ion pow er goes on increasing


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ICNIRP Basis : Distance And Power

RF exposures within accepted limits do not cause any adverse

health effects


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Reference Level for general public exposure to time-varying

electric and magnetic fields

Most of the CMTS/UASL providers come under this reference range


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Exposure Guideline - Base Station

The ICNIRP SAR levels are the basis for occupational exposure

The radio wave exposure levels from base station antennas are

typically less than

1 % of the science-based ICNIRP guidelines


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ICNIRP Adoption in India

On July 23, 2008, the Telecom Commission, has approved the adoption of

International Commission on Non-Ionizing Radiation Protection (ICNIRP)

guidelines, for limiting the Human exposure to EMF, for the Telecom Sector in

India.

The standards set by ICNIRP for emission levels are considered to be the safest,

and have been adopted by most of the countries across the globe to ensure

compliance against all the safety limits from EMF. The World Health Organization, is

closely involved with the studies and research being carried out by variousinternational bodies, and has recommended adoption of ICNIRP standards. As per

their advice:

The ICNIRP guidelines were developed to limit human exposure to electromagnetic

fields (EMF) under conditions of maximum absorption of the fields, which rarely

occurs, and the limits incorporate large safety factors to protect workers and even

larger safety factors to protect the general public, including children. Thus, the limitsin the ICNIRP guidelines are highly protective and are based on all the available

scientificevidence

Adoption of safest guidelines i.e. ICNIRP, has bought India inline with

International Standards of public health & safety against EMF exposure.


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Amendment in UASL License Agreement

Licensee shall conduct an audit and provide self certificates

annually as per procedure prescribed by TEC or any other agencyauthorized by licensor from Time to time for confirming to

limits/Levels fro Antennae Base Station Emissions) for general

Public exposure as prescribed by ICNIRP from time to time.

The compliance in the form of self certificate shall commencesix months after the date of issue of prescribed test procedure

by TEC or any other agency authorized by Licensor.

TEC has issued the draft documents on Generic

Requirement and Test Procedure for Measurement of

Electromagnetic Fields from Base Station Antennas


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Evaluation Technique as Suggested by TEC

Evaluation of EMF for telecommunication installations can be done

by following techniques:

1. Calculation Method

Following two methods are being prescribed. Either of which could be

used for predicting compliance to the radiation limits.

Prediction of RF Fields.

Calculation Method for determination ofEIRPth

2. Field Measurement Approach


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Experts from a renowned engineering college (Thiagarajar

Engineering College Madurai) share their expertise on the testprocedures and have prepared a report contextual to the Indian

environment .

Finally, the report was submitted to TEC for their perusal andadoption.


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FIELD TEST FOR ESTIMATION OF BASE STATION ANTENNA

FIELD PARAMETERS

Recently a field test was conducted by Thiagarajar advanced

Research Center, for the estimation of Base Station Antenna FieldParameters i.e. Electric Field (E) , Magnetic Field (H)& Power

Density (S) and to check the compliance with the ICNIRP limit.

Measurement Specifications are as follows:

Frequency (f) 1835 MHz

Transmitter Antenna Gain

(Gt)16 dBi

Receiver Antenna Gain (Gr) 4 dBi

Antenna Dimension (D) 1.32 m

Transmitter Power (Pt) 20 W


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COMPARISONS CHART BASED ON ACTUAL FIELD TEST

Distance

(R)

Power

Received

(W)

Measured

E Field

(V/m)

Measured

H Field

(A/m)

Measured

Power

Density

(w/m^2)

25 0.00000025 0.10517 0.00027890.0000293

25.5 0.00000025 0.10517 0.00027890.0000293

26 0.00000013 0.074517 0.00019760.0000147

26.5 0.00000040 0.13244 0.00035120.0000465

27 0.00000020 0.093883 0.00024900.0000233

27.5 0.00000032 0.11801 0.00031300.0000369

28 0.00000025 0.10517 0.00027890.0000293

28.5 0.00000020 0.093883 0.00024900.0000233

29 0.00000100 0.20993 0.00055680.0001169

29.5 0.00000063 0.16676 0.00044230.0000737

30 0.00000032 0.11801 0.00031300.0000369

ICNIRP Reference Levels for the respective

frequency i.e. 1835 MHz

E Field

Strength

(V/m)

H Field

Strength

(A/m)

Power

Density

(W/m2)

General

Public 58.9 0.1584 9.1

As shown above, the measured values for E field, H field and power density

are Hundreds of times lower than the prescribed reference level by ICNIRP.


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Way Forward

Each service provider will establish necessary infrastructure forself- monitoring , self-testing and for auditing of EMF measurement

for complying with emission limits as per ICNIRP guidelines.

adoption of icnirp in india

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