Birwelco USA

Unit Birwelco complete work on prestigious hot oil heater project

1 May 2011

Unit Birwelco complete work on prestigious hot oil heater project

Unit Birwelco has recently completed the production of one of the largest single structures of its kind to be manufactured in Wales, firmly establishing its presence in the international oil and gas market.

The major project was for the supply of a hot oil heater for the Kollsnes Gas Processing Plant on the West coast of Norway.

Unit Birwelco fabricated the 28m high, 190 tonne heater at its facility in Pembroke Dock, South Wales, for shipping to Norway on one of the largest vessels to ever dock in the port. The completion of this prestigious hot oil heater has positioned Unit Birwelco as one of only a small number of companies capable of supplying a single, fully modularised cylindrical fired heater.

The scope of the project included the design, supply, fabrication and modularisation of the hot oil heater, which was finished to a very high degree of assembly at Unit Birwelco’s South Wales fabrication facilities.

Engineering, procurement and project management was undertaken from Unit Birwelco's Halesowen offices, where the exacting requirements of Aker Solutions, Statoil and the Norwegian Norsok Standards had to be incorporated as part of the engineering and project execution works. The unit design included the use of Ultra low NOx gas fired burners, which enabled Unit Birwelco to offer their lowest ever guarantee levels for NOx emissions during heater operation at site.

The hot oil heater was assembled on to a common grid frame in the vertical orientation, with radiant and convection section pre-assembled and fuel skid and combustion air fan skid also installed to enable ease of installation to a pre-prepared foundation pit at site.

The extent of pre-assembly further included all control and instrument cabling from skid edge junction boxes to heater mounted instrumentation and also included all access stairs, ladders and platforms.

Unit Birwelco were very proud to be part of this successful project with Aker Solutions and Statoil.


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