IEC TR 62713:2013

IEC/TR 62713 ®
Edition 1.0 2013-04
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
colour
inside
Safety procedures for reduction of risk outside a structure

Procédures de sécurité pour la réduction des risques à l’extérieur d’une
structure
IEC/TR 62713:2013
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IEC/TR 62713 ®
Edition 1.0 2013-04
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
colour
inside
Safety procedures for reduction of risk outside a structure

Procédures de sécurité pour la réduction des risques à l’extérieur d’une

structure
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 91.120.40 ISBN 978-2-83220-744-4

– 2 – TR 62713 © IEC:2013
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General . 8
4.1 Introductory remark . 8
4.2 Lightning damage to human beings . 9
4.2.1 General . 9
4.2.2 Direct strikes . 9
4.2.3 Side flash . 9
4.2.4 Touch or contact voltages . 10
4.2.5 Step voltages . 10
5 Effects of lightning strikes to human beings . 11
5.1 Possible injuries . 11
5.2 How injured people can be helped . 12
6 How to act in the presence of a thunderstorm . 14
6.1 How to detect a lightning risk . 14
6.2 Where to find safe locations . 14
6.3 What to do outdoors . 15
6.4 Hazardous situation in a car . 17
6.5 What to do when camping . 17
6.6 Thunderstorms in mountainous regions . 18
6.7 What to do on water . 18
6.8 What to do at open air festivals . 19
6.9 What to do when playing outdoor sports . 19
Bibliography . 21

Figure 1 – Examples of roofs and facades damaged by lightning . 8
Figure 2 – Direct strike. 9
Figure 3 – Side flash . 9
Figure 4 – Unsuitability of metallic structures when not earthed . 10
Figure 5 – Electrization by touch voltage . 10
Figure 6 – Current flow through body due to by step voltage . 11
Figure 7 – Lichtenberg figures on human skin [1] . 12
Figure 8 – Cardiopulmonary resuscitation (CPR). 13
Figure 9 – How to avoid strikes inside a house . 15
Figure 10 – Avoid the highest point in this area . 16
Figure 11 – Safety distance (10 m) under a tree . 16
Figure 12 – Generally, a car acts as a Faraday cage . 17
Figure 13 – Example of a lightning protection system on a sailing boat . 19

TR 62713 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY PROCEDURES FOR REDUCTION
OF RISK OUTSIDE A STRUCTURE
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
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/TR 62713, which is a technical report, has been prepared by IEC technical committee 81:
Lightning protection.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
81/427/DTR 81/429/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.

– 4 – TR 62713 © IEC:2013
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
rel
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