Large Vessel for Esso is delivered to Yorkshire Rubber linings Ltd in December 2013, the vessel is uplifted and placed into position onto rail tracks ready for the removal of the old lining. At this stage it's critical to insure that the vessel is placed correctly onto the cradle in order for it to rotate correctly without interference to any of the external branches.
This internal shot shows the plastic water treatment injectors at the top end of the vessel, each injector must be carefully removed prior to any work commencing.
This internal shot shows the base of the vessel, the vessel is 100% rubber lined internally including every single hole.
Before the removal of the old rubber lining we carefully take a measurement on the holes in the base, this is to make sure the new lining is the correct diameter. This is very important because a plastic nozzle has to fit perfectly into each and every one of the holes.
This photo taken in January 2014 shows the vessel after the old rubber has been removed. The old rubber was removed by Water Jet Cutting, this process took around 10 days to complete.
On many occasions once the rubber is removed it exposes metal corrosion that some times is not possible to see with the old rubber lining still in place. Yorkshire Rubber linings are able to carry out metal repairs within their scope of work.
Some metal corrosion does become visible while the vessels or plant equipment is still in service, as you can see from this photo this internal elbow has been repaired before while in service using a chemical metal solution. This elbow had be completely removed and replaced with a complete brand new one.
Once authorization was granted by the customer Yorkshire rubber linings carried out the metal repairs inside the vessel, this involved removing the metal flat sections in the base and the complete replacement of the internal elbow as to ASTM/ASME A 105/SA 105 M 11 ASME CODE SECT 11 PART A ED 2010. On completion all welds and repairs where tested the above code.
The external surface was shotblasted to SA 2.5 and then a two pack epoxy primer was applied, this will prevent any oxidization to the outer surface during the rubber lining process.
With the internal metal fabrication repairs now complete it was time to shotblast the internal surface ready for the rubber lining. 100% of the internal surface was shotblasted to Sa 2.5, the vessel was then vacuumed out and blown down to remove any dust or small particles. Once this process was complete the internal surface was coated with a Cilbond 24 bonding agent and all this done within one day.
April 2014. With all the pre-preparation complete it was time to start the process of applying the rubber lining, this shot shows one of Yorkshire Rubber Linings operatives applying the 6mm thick natural rubber.
Each hole in the bottom section of the vessel have to lined so a exact diameter size to ensure that the plastic nozzles will fit correctly, they like the rest of the vessel must be 100% spark proof.
May 2014, The base is now nearing completion, you will also notice in the shot that part of the main body of the vessel is also rubber lined. The vessel is mounted onto a cradle that also the vessel to turn so that the operatives can work on all the internals surfaces.
Yorkshire Rubber lining prides itself on the quality of its rubber lining, here YRL operative makes sure that all seams are correctly stitched and ironed.
May 2014 Vulcanization of the Vessel After the completion of the rubber lining of the internal surfaces all the flange faces have to blanked off ready for the vulcanization of the vessel, this is achieved by pumping steam under pressure into the vessel. The vessel has to be rotated on regular intervals to ensure that no condensing water settles in any one area.
May 2014, After the competition of the final inspection that includes a full 100% spark test the vessel was ready for the application of the outer surface coating application. This photos shows the mid coat been applied.
May 2014, The final coating system is applied to the outer surface, two coats of top coat were applied.
Early June 2014, Vessel is end boarded and loaded onto transport back to Southampton, Careful care is taken to ensure that the outer surface is not damaged during loading.
Transport with vessel leaves our site.