Description

Data sheet
Manufacturer Aker solutions - Norway
Model BTA DP2
Performance specification About 12.000 TON lifting capacity
Year 2008
Other Operational water depth about 59 meter
Class Documented and DNV certified method for removal of jackets


Documented and DnV certified method for removal of jackets

Comprehensive systems & operations description

Buoyancy Tanks Assemblies(BTA)

Total length of assembly 65 meter
Maximum with of assembly 13,7 meter
OD of each tank 6,6 meter
Length of each tank 53 meter
Maximum draft during installation 59 meter
Dry weight of assembly 1025 MT
Net lifting per assembly 2250 MT
The system consists of four identical assemblies

BTA ballast system description

One 4” combined seawater inlet/outlet line and one 4” combined vent/compressed air supply line to each ballast compartment.

Each seawater inlet/outlet line is equipped with one remote operated valve and one ROV operated valve, the latter for contingency purpose.

The vent lines are connected to a distribution manifold located inside the pyramid at the top of the BTA. This manifold is equipped with two remote operated vent valves and one remote operated valve to segregate the air flow between the lower ballast tanks and the upper ballast tanks.

In addition there are two inlets for compressed air which are equipped with check valves.

Each vent line is equipped with an in-line block valve outside the pyramid for use during Roll Over and Roll Back operations.

Compressed air for ballasting is supplied from a compressors located on the OSV via two air hoses (part of the umbilical) connected to the distribution manifold on the BTA.

Specifications

Accommodation

Usage opportunities include salvage operations - Decommissioning and removal of many types of offshore installations - submarine salvage - wreck salvage - Temporary harbours and breakwaters.

The BTA units can be towed horizontally and ballasted into vertical postilion.

Video available.

Stored on land 2017

Stored on land 2017

Stored on land 2017

Illustration

photo

Towage of the system

Reference

11.600 TON Frig DP2 removed

Construction

Set of 4 Buoyancy Tanks Assemblies(BTA) with lifting capacity of 12.000 TON.

Intellectual properties and related patents can be acquired together with the equipment.

Frigg DP2 platform 11.600 TON removed with this system

Illustration

Frigg DP2 11.600 TON platform removed

Towage of the system

illustration

ROV photo

Ready for lifting

Animation - illustration

Lifting 11.600 TON

Lifting 11.600 TON

Certification

All ships is sold according to BIMCO Norwegian salesform 1993 terms.
All used equipment is sold "as is" - EX Works" if not otherwise explicit stated in written form.

Disclaimer

Can be sold as a company where buyer takes over 100% of shares in the company.

Company assets include;
Patented technology for installation and removal of offshore jacket structures
NO 318859 / GB 2402422 (“BTA”)
NO 326901 / GB 2462565 (“BTA re-use”)
Wordmark «BTA» in Norway (reg. no. 258853)
Documented and DnV certified method for removal of jackets
Comprehensive systems & operations description
Ownership to four Buoyancy Tank Assemblies
Short term land lease agreement for storage of tanks (approximately 4 550 m2)