Maintenance Shutdown Puts Boiler in Scaffolding
It was clear from the start: there were literally 21 days for the maintenance shutdown in the Omrin boiler. That meant working under high pressure and asked for effective cooperation between Hertel and all other parties.
The Hertel Project Manager, Gerard Boersma, explains: “The partitioning wall between the 2nd and 3rd chamber of the boiler needed to be reconstructed. This meant removing the wall between 2 and 3 and putting a new wall back in its place. In order to carry out this work, Hertel had to erect scaffolding in the boiler, alongside the 2nd and 3rd chambers. For this purpose, Hilux produced a special structure on which we built the scaffolding."
Stork was responsible for the replacement of the partitioning wall and in close consultation, Hertel erected the scaffolding. Gerard explains: “That consultation was essential because the final date on which the boiler would be started up had already been established. There was simply no room for delay.”
Inspection at the same time
In addition to the work, an inspection was also carried out in the 1st chamber. Hertel also attended to the construction of tailor-made scaffolding for this. This scaffold was also mounted on a structure that was specially designed by HILUX.
“This structure was mounted in supports so that they could be secured into the wall of the boiler”, explains Gerard. “This was necessary in order to ensure that none of the scaffolds became stamped to the furnace. By continuing to build on this structure, we could guarantee that the inspection and reparation works were able to continue on the floor of the furnace.”
Supplying materials
As there is little space in the plant and only a single lift in the building, a scaffold was placed outside in order to supply materials to the boiler. This outside scaffold was a large structure, measuring 6m x 6m x 32m and served as a scaffold for storing and supplying materials. Gerard explains: “First of all, Ruud Strous had to calculate and design everything meticulously, due to the load that the scaffolding material would exert on the floors. As soon as it was clear that this wouldn't cause any problems, we were able to construct the scaffold. All in all, it was quite a job to be carried out in a short space of time. In addition to that, we constructed scaffolds and carried out maintenance work at a number of other locations for Omrin.”
Omrin on the Ladder
Omrin is dedicated to finding a useful application for waste. Omrin collects, recycles, treats and processes waste in a way that is as sustainable and innovative as possible. Omrin processes waste in accordance with 'Lansink's Ladder', named after Ad Lansink, a former member of the Dutch parliament. In 1979, Lansink, a member of the CDA (Christian Democratic Alliance), proposed a motion in the House of Representatives that prescribed that governmental policy needed to focus its attention on processing waste in a way that was as environmentally friendly as possible. The motion was adopted and Lansink's Ladder became a standard model for waste management. Prevention is right at the top of the ladder: preventing waste from being produced in the first place. The most highly polluting solution is at the bottom of the ladder: dumping waste. The higher up the ladder the waste ends up, the better it is for the environment. Omrin always tries to choose the highest possible method on the ladder.
Tuesday 07th of August 2012, 11:18:21 AM BST
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