IEC TR 62283:2010
(Main)Optical fibres - Guidance for nuclear radiation tests
Optical fibres - Guidance for nuclear radiation tests
IEC/TR 62283:2010(E) gives a short summary of the radiation exposure in certain environments and applications and the different radiation effects on fibres. It also describes the most important radiation effect, i.e. the increase of transmission loss, and its strong dependence on a variety of fibre properties and test conditions. These dependencies need to be known in order to perform appropriate tests for each specific application as well as to understand, compare and qualify the test results obtained at different laboratories when performed according to IEC 60793-1-54, Optical fibres - Part 1-54: Measurement methods and test procedures - Gamma irradiation. The main changes with respect to the previous edition are:
- Clause 5 now also covers industrial environment,
- A new Clause 9 has been added to deal with "measurement techniques and quality assurance of attenuation measurements".
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Standards Content (Sample)
IEC/TR 62283 ®
Edition 2.0 2010-06
TECHNICAL
REPORT
Optical fibres – Guidance for nuclear radiation tests
IEC/TR 62283:2010(E)
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IEC/TR 62283 ®
Edition 2.0 2010-06
TECHNICAL
REPORT
Optical fibres – Guidance for nuclear radiation tests
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
V
ICS 33.180.10 ISBN 978-2-88912-031-4
– 2 – TR 62283 © IEC:2010(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Radiation units, dose calculation .7
4 Radiation shielding .9
5 Radiation environments and exposure .9
5.1 Natural radioactivity .9
5.2 Nuclear reactors (fission) .9
5.3 Fusion reactors .9
5.4 High-energy physics experiments .10
5.5 Space environments.10
5.6 Medicine .10
5.7 Military environments .11
5.8 Industrial environments .11
6 Irradiation facilities and dosimetry .11
6.1 General .11
6.2 Continuous gamma irradiation .12
6.3 Neutron irradiation.12
6.4 Proton irradiation.13
6.5 Electron irradiation .14
6.6 Pulsed irradiation .15
7 Radiation effects on optical fibres.15
8 Radiation-induced transmission loss.16
8.1 Overview .16
8.2 Fibre type.17
8.3 Radiation history .17
8.4 Wavelength dependence .17
8.5 Temperature dependence.18
8.6 Light power dependence, photobleaching.19
8.7 Dose rate dependence .21
8.8 Pulsed irradiations.23
8.9 Radiation type dependence .24
8.10 Loss annealing .25
8.11 Conclusions .25
9 Measurement techniques and quality assurance of attenuation measurements.26
10 Radiation effects on passive fibre optic components.26
10.1 Connectors.26
10.2 Couplers and multiplexers .27
10.3 Fibre Bragg gratings.27
Bibliography.29
Figure 1 – Wavelength dependence of the radiation-induced loss of a Ge-doped
graded index fibre (50/125 μm) .17
Figure 2 – Temperature dependence of the radiation-induced loss.19
TR 62283 © IEC:2010(E) – 3 –
Figure 3 – Light power dependence of the radiation-induced loss of an undoped
single-mode fibre .20
Figure 4 – Light power dependence of the radiation-induced loss in modern MM SI
and SM fibres .20
Figure 5 – Dose rate dependence of the radiation-induced loss; T = 22 °C .22
Figure 6 – Annealing of the radiation-induced loss of a Ge-doped GI fibre after pulsed
electron irradiation with dose values of 5 Gy(SiO ), 100 Gy(SiO ) and 1 000 Gy(SiO ),
2 2 2
respectively .23
– 4 – TR 62283 © IEC:2010(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
GUIDANCE FOR NUCLEAR RADIATION TESTS
FOREWORD
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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 62283, which is a technical report, has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition of IEC/TR 62283 published in 2003
and constitutes a technical revision.
The main changes with respect to the previous edition are listed below:
– Clause 5 now also covers Industrial environment.
– a new Clause 9 has been added to deal with "Measurement techniques and quality
assurance of attenuation measurements".
TR 62283 © IEC:2010(E) – 5 –
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
86A/1312/DTR 86A/1327/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
– 6 – TR 62283 © IEC:2010(E)
INTRODUCTION
In order to restrict the test method of IEC 60793-1-54, Optical fibres – Part 1-54: Measure-
ment methods and test procedures – Gamma irradiation to a clear, concise listing of
instructions, the background knowledge that is necessary to perform correct, relevan
...
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