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BS IEC 61892-5:2019

BS IEC 61892-5:2019

$142.49

Mobile and fixed offshore units. Electrical installations – Mobile units

Published By Publication Date Number of Pages
BSI 2019 28
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This part of IEC 61892 specifies additional characteristics for electrical installations in mobile units.

It applies to installations that depend on buoyancy, such as column-stabilized units (semi-submersible units), ship- or barge-type units as well as self-elevating units. It specifies additional characteristics for such units, used during transfer from one location to another and for drilling, production, accommodation, processing, storage and offloading purposes.

It applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any limitation on voltage level. Referenced equipment standards may give voltage level limitations.

This document specifies requirements such as those concerning

  • environmental conditions,

  • limits of inclination for the unit where the equipment is required to operate,

  • bilge pumps,

  • navigation and obstruction lights,

  • steering gear,

  • ballast system,

  • jacking systems, and

  • anchoring systems.

For electric propulsion, reference is made to IEC 60092-501.

For dynamic positioning systems, reference is made to relevant IMO requirements.

This document does not apply to

  • fixed equipment for medical purposes,

  • electrical installations of tankers, and

  • control of ignition sources other than those created by electrical equipment.

NOTE 1 For medical rooms, IEC 60364-7-710 provides specific requirements. Requirements for tankers are given in IEC 60092-502.

NOTE 2 Guidance on protection of non-electrical equipment can be found in ISO 80079-36, ISO 80079-37 and IMO 2009 MODU Code, 6.7.

NOTE 3 Attention is drawn to further requirements concerning electrical installations on such mobile offshore units contained in the IMO MODU Code.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 English
CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
10 2 Normative references
3 Terms and definitions
11 4 General requirements
4.1 Environmental conditions
4.1.1 Ambient temperature
12 4.1.2 Relative humidity
4.2 Protection against flooding
4.3 Rotating machines
4.4 Conductors, equipment and apparatus
Table 1 – Ambient temperature
13 4.5 Main switchboards
4.6 Handrails or handles on mobile units
4.7 Axes of rotation
5 Limits of inclination of the unit
5.1 Authority requirement
5.2 Machines, equipment and apparatus – General
5.3 Propulsion machinery
14 5.4 Essential source of power
5.5 Emergency machinery
5.6 Dynamic condition
6 Bilge pumps
6.1 Power supply
6.2 Cables and cable connections
15 6.3 Location of starting arrangement
7 Navigation and obstruction lights
7.1 General
7.2 Obstruction lights when in operation
7.3 Navigation lights
7.4 Power supply and monitoring systems
16 7.5 Special requirements for lights using LEDs
8 Steering gear
8.1 Power operated steering gear
8.2 Motors
17 8.3 Motor starters
8.4 Power circuit supply
8.5 Supply of control circuits and control systems
8.6 Circuit protection
18 8.7 Starting and stopping of motors for steering gear power units
8.8 Steering gear control systems
8.9 Alarms and indications
19 8.10 Rudder angle indication
8.11 Separation of circuits
8.12 Communication between navigating bridge and steering gear compartment
9 Electric propulsion
10 Dynamic positioning
20 11 Ballast systems
11.1 General
11.2 Ballast pumps
11.3 Control and indicating systems
21 11.4 Internal communication
11.5 Protection against flooding
22 12 Jacking systems
12.1 General
12.2 Design
12.3 Holding capacity
23 12.4 Electric motor capacity
12.5 Jacking gear motors and motor controller
12.5.1 General
12.5.2 Group installation
12.5.3 Overcurrent protection
12.5.4 Running protection
12.5.5 Monitoring
24 12.6 Testing at factory at site or on board after modifications
13 Anchoring systems
13.1 General
13.2 Anchoring arrangements
13.3 Control systems
25 13.4 Thruster-assisted anchoring systems (TA)
26 Annex A (informative) Typical VSD driven AC jacking system
Figure A.1 – Typical VSD driven AC jacking system
27 Bibliography

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BS IEC 61892-5:2019
$142.49