NZS 2772.1-1999A1 Maximum exposure levels - 3 kHz to 300 GHz

PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee TE/7, Human Exposure to Electromagnetic Fields, to supersede AS/NZS 2772.1 (Int):1998.

The finalised text was subsequently balloted by committee members but did not meet the high threshold (80 % of votes cast from each country being positive) necessary for adoption as a joint Standard. Subsequently a number of further changes were discussed, and agreed to, by New Zealand members of the TE/7 Committee. The modified text was balloted by New Zealand members and exceeded the 80 % threshold. A further ballot of Australian members, using the New Zealand text, failed and the document has been published as a New Zealand only (rather than a joint Australian/New Zealand) Standard.

This Standard is based on the ICNIRP Guidelines, April 1998. The objective of this Standard is to specify basic restrictions and reference levels for human exposure to radiofrequency fields in the frequency range 3 kHz to 300 GHz.

The terms "informative" and "normative" have been used in this Standard to define the application of the Appendix to which they apply. An informative Appendix is for information and guidance only whereas a normative Appendix is an integral part of the Standard. Due to the nature of the material contained in this Standard, the Foreword should be considered and read as part of the Standard.

The Standard is consistent with currently accepted world best practice.

Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard.

Permission from the International Commission on Non-Ionizing Radiation Protection and Health Physics for the use and reproduction in this Standard of material from the 1998 ICNIRP Guidelines, is gratefully acknowledged.

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NZS 2772:Part 1:1999

Pr Gratis

RADIOFREQUENCY FIELDS

Part 1:

Maximum exposure levels – 3 kHz to 300 GHz

AMENDMENT No. 1

November 1999

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CORRECTION

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Clause 7.5 (page 20)

Delete equation 4 and substitute the following:

∑_j=3kHz^65kHz H_j / H_L,j + ∑_j=65kHz^10MHz H_j / b ≤ 1

...(Eq. 4)

(Amendment No. 1, November 1999)

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© 1999 STANDARDS COUNCIL

STANDARDS NEW ZEALAND

PRIVATE BAG 2439

WELLINGTON 6020

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NZS 2772:Part 1:1999

COMMITTEE REPRESENTATION

This Standard was prepared by the Joint Australian/New Zealand Committee TE/7, Human Exposure to Electromagnetic Fields. It was subsequently published as a New Zealand Standard (see Preface).

New Zealand representation on the committee was as follows:

Adopt Radiation Control (NZ)

Broadcast Communications NZ

Local Government, New Zealand

Ministry of Commerce NZ

National Radiation Laboratory New Zealand

New Zealand Association of Radio Transmitters

New Zealand Institute of Occupational & Environmental Medicine

Telecom New Zealand

© COPYRIGHT

The copyright of this document is the property of the Standards Council. No part of it may be reproduced by photocopying or by any other means without the prior written permission of the Chief Executive of Standards New Zealand unless the copying is carried out by or on behalf of a Territorial Authority in the process of preparing its local bylaw, or the circumstances are covered by Part III of the Copyright Act 1994.

Standards New Zealand will vigorously defend the copyright in this Standard. Every person who breaches Standards New Zealand's copyright may be liable to a fine not exceeding $50,000 or to imprisonment for a term not to exceed three months. If there has been a flagrant breach of copyright, Standards New Zealand may also seek additional damages from the infringing party, in addition to obtaining injunctive relief and an account of profits.

Published by Standards New Zealand, the trading arm of the Standards Council, Private Bag 2439, Wellington 6020.

Telephone: (04) 498 5990, Fax: (04) 498 5994.

Website: www.standards.co.nz

AMENDMENTS

No	Date of issue	Description	Entered by, and date

CONTENTS

CONTENTS	PAGE
Committee representation	IFC
Copyright	IFC
Preface	3
Foreword	4
Section
1 Scope	7
2 Application	7
3 Referenced documents	8
4 Definitions and units	8
5 Limits for RF exposure between 3 kHz and 300 GHz	10
6 Reference levels	13
7 Simultaneous exposure to multiple frequency fields	19
8 Verification of compliance with the Standard	22
9 Protection – Occupational exposure	28
10 Protection – General public exposure	29
Appendix
A Rationale for the development of the maximum exposure levels for RF fields	30
B Medical monitoring/health surveillance of persons occupationally exposed to RF	31
C Occupational exposure look-up table	35
D General public exposure look-up table	36
Table
1 Relationship between particular basic restrictions and reference levels	11
2 Basic restrictions for whole body average and localized sar	12
3 Basic restrictions for SA in the head for pulse modulated RF exposure	12
4 Basic restrictions for peak current density in the head and trunk	12
5 Basic restrictions for incident power flux density	13
6 Reference levels for time averaged exposure to RMS electric and magnetic fields (unperturbed fields)	14
7 Reference levels for peak exposure to electric and magnetic fields (unperturbed fields)	14
8 Side length of spatial averaging square	18
9 Reference levels for peak contact currents from point contact with conductive objects	18
10 Reference levels for time averaged current induced in any limb	19
11 Summary of compliance provisions for mobile or portable transmitting equipment	25

Contents continued overleaf

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12	Maximum output power levels	27
C1	Look-up table of reference levels for occupational exposure to electric and magnetic fields as specified in tables 6 and 7	35
D1	Look-up table of reference levels for general public exposure to electric and magnetic fields as specified in tables 6 and 7	36

Figure

1	Reference levels for peak and time average exposure to electric fields	16
2	Reference levels for peak and time averaged exposure to magnetic fields	16
B1	Eye examination record proforma	33

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PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee TE/7, Human Exposure to Electromagnetic Fields, to supersede AS/NZS 2772.1 (Int):1998.

The finalised text was subsequently balloted by committee members but did not meet the high threshold (80 % of votes cast from each country being positive) necessary for adoption as a joint Standard. Subsequently a number of further changes were discussed, and agreed to, by New Zealand members of the TE/7 Committee. The modified text was balloted by New Zealand members and exceeded the 80 % threshold. A further ballot of Australian members, using the New Zealand text, failed and the document has been published as a New Zealand only (rather than a joint Australian/New Zealand) Standard.

This Standard is based on the ICNIRP Guidelines, April 1998. The objective of this Standard is to specify basic restrictions and reference levels for human exposure to radiofrequency fields in the frequency range 3 kHz to 300 GHz.

The terms "informative" and "normative" have been used in this Standard to define the application of the Appendix to which they apply. An informative Appendix is for information and guidance only whereas a normative Appendix is an integral part of the Standard. Due to the nature of the material contained in this Standard, the Foreword should be considered and read as part of the Standard.

The Standard is consistent with currently accepted world best practice.

Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard.

Permission from the International Commission on Non-Ionizing Radiation Protection and Health Physics for the use and reproduction in this Standard of material from the 1998 ICNIRP Guidelines, is gratefully acknowledged.

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