Columns
Our projects range from single replacement pressure vessels for established plants, to multiple vessel orders for entirely new sites – in the UK and overseas.
Vessco possesses considerable experience in the manufacture of pressurised columns for the petroleum, LNG, petrochemical, chemical and nuclear power industries. Our columns can be fabricated in carbon steel, stainless steel, clad materials or nickel alloys.
TYPES OF COLUMNS INCLUDE
- Distillation columns
- Fractionating columns
- Filtration columns
- Amine regenerator columns
- Scrubbing columns
- Demethaniser columns
- Deaerator columns
- Quench Columns
DOCKSIDE FACILITIES
These very large vessels, which can be over 50 metres in length and weigh more than 300 tonnes, often pose a problem for road transportation. At Vessco we use specialist road transport vehicles and high level transport routes to dockside facilities (at Swansea and Barry in South Wales, UK) ensuring that even the largest columns can be shipped out to clients around the world with minimal forward planning.
ASSEMBLY
An important part of pressure column manufacturing is assembly on site. This requires careful planning, as many of our projects involve replacement sections for existing columns.
REPLACEMENT SECTIONS
When a section needs replacing for an existing column, the parts are manufactured in the UK, shipped to client locations and assembled on site by our specialist team of pressure engineers, who project manage the build in collaboration with the plant operator and local installation and maintenance partners.
Recent renovation/replacement projects include:
- Bottom replacement sections (weighing 40 tonnes and shipped to two sites in North Africa)
- Skirt replacement
- Reboiler sections
- Lower fractionation sections
COLUMN REPAIRS
Repairing an existing column is frequently faster and cheaper than investing in a new unit. Restoring an old unit on site may include dismantling installed columns, removing pipework, insulation, platforms, ladders, instrumentation and replacement of internals.
Our team are experienced in cutting and welding thick walled steel columns on site, prepping edges and installing replacement sections.
