IEC TR 62131-8:2022

Environmental conditions – Vibration and shock of electrotechnical equipment - Part 8: Transportation by ship

IEC TR 62131-8:2022 reviews available dynamic data relating to the transportation of electrotechnical equipment by marine craft such as ships and boats either at sea or during riverine use. In this instance, there is a clear similarity between dynamic data relating to the transportation of electrotechnical equipment and that of electrotechnical equipment installed on maritime platforms.

General Information

• Status: Published
• Publication Date: 19-Jul-2022
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 104 - Environmental conditions, classification and methods of test
• Current Stage: PPUB - Publication issued
• Start Date: 15-Aug-2022
• Completion Date: 20-Jul-2022

Standards Content (Sample)

IEC TR 62131-8 ®
Edition 1.0 2022-07
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment –
Part 8: Transportation by ship
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IEC TR 62131-8 ®
Edition 1.0 2022-07
TECHNICAL
REPORT
colour
inside
Environmental conditions – Vibration and shock of electrotechnical equipment

–
Part 8: Transportation by ship

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-3970-4

– 2 – IEC TR 62131-8:2022 © IEC 2022
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Data source and quality . 8
4.1 General . 8
4.2 NAV vibration measurements . 8
4.3 RIB vibration measurements . 9
4.4 Supplementary data . 11
5 Intra data source comparison . 13
5.1 General . 13
5.2 NAV vibration measurements . 13
5.3 RIB vibration measurements . 14
5.4 Supplementary data . 15
6 Inter data source comparison . 16
7 Environmental description . 16
7.1 Conditions causing the environment . 16
7.2 Environmental characteristics . 17
7.3 Test types . 17
8 Comparison with the IEC 60721 series . 18
9 Recommendations . 21
Bibliography . 54

Figure 1 – RMAS Arrochar specification and layout [3] . 23
Figure 2 – RMAS arrochar hold vibration measurement locations [3] . 24
Figure 3 – RMAS Arrochar hold vibration levels for different sea states [3] . 26
Figure 4 – Envelope of vibration levels in forward and aft holds [3] . 26
Figure 5 – RIB speed from GPS obtained during measurement events [4] . 27
Figure 6 – RIB transducer locations [4] . 27
Figure 7 – RIB vibration severities forward deck – Fore-aft [4] . 30
Figure 8 – RIB vibration severities forward deck – Lateral [4] . 31
Figure 9 – RIB vibration severities forward deck – Vertical [4] . 31
Figure 10 – RIB vibration severities centre port deck – Fore-aft [4] . 32
Figure 11 – RIB vibration severities centre port deck – Lateral [4] . 32
Figure 12 – RIB vibration severities centre port deck – Vertical [4] . 33
Figure 13 – RIB vibration severities rear deck – Fore-aft [4] . 33
Figure 14 – RIB vibration severities rear deck – Vertical [4] . 34
Figure 15 – RIB vibration severities starboard gearbox [4] . 34
Figure 16 – RIB vibration amplitude probability density – Forward deck [4] . 35
Figure 17 – Vibration RIB amplitude probability density – Aft (rear deck) deck [4] . 35
Figure 18 – RIB vibration time history – Forward deck [4] . 36
Figure 19 – Naval supply tanker at 20 kn [5] . 36
Figure 20 – Train ferry at 20 kn [5] . 37

Figure 21 – MIL STD 810 [6] random vibration test severity for shipborne equipment . 37
Figure 22 – MIL STD 810 [6] sinusoidal vibration test severity for shipborne equipment . 38
Figure 23 – DEF STAN 00-035 [7] test severity for transportation of equipment by sea . 38
Figure 24 – DEF STAN 00-035 [7] test severity for equipment installed in large ships . 39
Figure 25 – DEF STAN 00-035 [7] test severity for equipment installed in smaller ships
– Aft locations . 39
Figure 26 – DEF STAN 00-035 [7] test severity for equipment installed in small ships –
Mid and forward locations . 40
Figure 27 – DEF STAN 00-035 [7] information – Typical acceleration power spectral
density at aft region of naval frigate . 40
Figure 28 – DEF STAN 00-035 [7] information – Overall vibration RMS variations with
power demand . 41
Figure 29 – DEF STAN 00-035 [7] information – Overall vibration RMS variations with
manoeuvre condition . 41
Figure 30 – EXACT DK 1–237 [8] composite vibration spectrum of engine room
measurements from five different ship types . 42
Figure 31 – American Bureau of Shipping recommendations for vibration severities
[10] . 42
Figure 32 – ISO 20283 [11] recommendations for passenger comfort. 43
Figure 33 – IEC 60945 [14] severity for ship installed equipment . 43
Figure 34 – Comparison of random severities . 44
Figure 35 – Comparison of sinusoidal severities . 44
Figure 36 – IEC 60721-3-2 [28] – Stationary vibration random severities . 45
Figure 37 – IEC TR 60721-4-2 [30] – Stationary vibration random severities . 45
Figure 38 – IEC 60721-3-2 [28] – Stationary vibration sinusoidal severities . 46
Figure 39 – IEC TR 60721-4-2 [30] – Stationary vibration sinusoidal severities . 46
Figure 40 – IEC 60721-3-2 [28] – Shock severities . 47
Figure 41 – IEC TR 60721-4-2 [30] – Shock severities for IEC 60068-2-27 [32] test
procedure . 47
Figure 42 – IEC TR 60721-4-2 [30] – Shock severities for IEC 60068-2-29 [33] test
procedure . 48
Figure 43 – IEC 60721-3-6 [13] stationary vibration sinusoidal severities . 48
Figure 44 – IEC 60721-3-6 [13] shock severities . 49
Figure 45 – Comparison of NAV vibrations [3] with IEC 60721-3-2 [28] . 49
Figure 46 – Comparison of RIB vibrations [4] with IEC 60721-3-2 [28] . 50
Figure 47 – Comparison of RIB vibrations [4] (less rear floor measurements) with
IEC 60721-3-2 [28] . 50
Figure 48 – Comparison of GAM-EG-13 vibrations [5] with IEC 60721-3-2 [28] . 51
Figure 49 – Comparison of EXACT DK 1–237 composite vibration spectrum of engine
room measurements (from [8]) with IEC 60721-3-2 [28] . 51
Figure 50 – Comparison of MIL STD 810 [6] and DEF STAN 00-035 [7] ship
transportation severities with IEC 60721-3-2 [28] . 52
Figure 51 – Comparison of sinusoidal installed equipment severities with IEC 60721-3-
2 [28] . 52
Figure 52 – Comparison of Sinusoidal Installed Equipment Severities with IEC 60721-
3-6 [13] . 53

– 4 – IEC TR 62131-8:2022 © IEC 2022
Table 1 – RMAS Arrochar hold low frequency (up to 10 Hz) accelerations levels [3] . 24
Table 2 – RMAS Arrochar hold vibration levels for different sea states [3] . 25
Table 3 – Definition of sea states . 25
Table 4 – RIB measurement events [4] . 28
Table 5 – RIB statistics of vibration measurements from sea segment [4] . 28
Table 6 – RIB statistics of vibration measurements riverine events – RMS [4] . 29
Table 7 – RIB statistics of vibration measurements riverine events – Maximum and
minimum [4] . 29

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL CONDITIONS – VIBRATION AND
SHOCK OF ELECTROTECHNICAL EQUIPMENT –

Part 8: Transportation by ship

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The o
...