What is BS IEC 61892-5 - Mobile offshore units about?
BS IEC 61892-5 is the fifth part of the IEC 61892 series that discusses mobile and fixed offshore units.
BS IEC 61892-5 specifies additional characteristics for electrical installations in mobile units. BS IEC 61892-5 applies to installations that depend on buoyancy, such as column-stabilized units (semisubmersible units), ship- or barge-type units as well as self-elevating units. BS IEC 61892-5 specifies additional characteristics for such units, used during the transfer from one location to another and for drilling, production, accommodation, processing, storage and offloading purposes.
BS IEC 61892-5 applies to all installations, whether permanent, temporary, transportable or hand-held, to AC installations and DC installations without any limitation on voltage level.
Note: BS IEC 61892-5 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
Who is BS IEC 61892-5 - Mobile offshore units for?
BS IEC 61892-5 on additional requirements for electrical installations for mobile offshore units is useful for:
- Offshore unit owners
- Offshore unit designers
- Offshore unit installers
Why should you use BS IEC 61892-5 - Mobile offshore units?
BS IEC 61892-5 specifies additional requirements that are specific to mobile offshore units and are not covered in BS IEC 61892-1.
BS IEC 61892-5 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
- Anchoring systems
For dynamic positioning systems, BS IEC 61892-5 also provides references to relevant IMO requirements. In conclusion, these guidelines of BS IEC 61892-5 help you to understand the requirements of mobile offshore units and thereby operate them efficiently.
What’s changed since the last update?
BS IEC 61892-5:2019 supersedes BS IEC 61892‑5:2014, which is withdrawn. BS IEC 61892-5:2019 includes the following significant technical change with respect to the BS IEC 61892‑5:2014:
- The technical requirements as to electric propulsion have been replaced with a reference to IEC 60092-501:2013
- The requirement for handrails on main and emergency switchboards has been added
- Requirements as to control systems and indicators for watertight doors and hatch covers have been made more specific
- Requirements concerning the holding capacity for jacking systems have been rewritten
- Requirements as to thruster-assisted mooring system have been rewritten.