Pulp, which is the raw material used in the manufacture of paper, is prepared by chemically or mechanically separating cellulose fibres from wood, fibre crops or waste paper. At an industrial scale, this process is performed in large tanks that need recurrent inspections.
One of Europe’s leading manufacturer of pulp and paper possesses a large paper mill in the north of Poland. The plant counts more than 50 chemical tanks used for the production of pulp and paper. Every year, the company proceeds to a plant shutdown in order to perform a thorough inspection of all infrastructures. This operation includes the inspection of the 50 chemical tanks. Part of the method consists of a general visual inspection of the assets as well as an integrity check of the welding. To perform these inspections the company uses traditional methods such as the use of rope accesses and scaffoldings. Motivated by the potential gain relative to the rapidity of execution but as well the potential benefit of not having to send people inside the tanks to do the job, the company requested the intervention of Flyability, and its polish partner Inspectios, to perform a pilot project with Elios.
Solution and Process
For this pilot project, it was decided to limit the intervention to 2 tanks, each having a diameter of 6 meters for a height of 25 meters. The inspection was also limited to the inside part of the tanks. Prior to deploying Elios, the tanks had been properly cleaned and degassed. 3 flights of 10 minutes each were necessary to perform the complete inspection of one tank, making the overall inspection worth 60 minutes of flight. Elios was piloted by a Flyability employee who was supported by inspection engineers to help conduct the inspection according to their expectations. Between each flight, the team gathered in a meeting room to check the videos produced by Elios and debrief on the best way to proceed.
The 5 first flights were conducted from the inside of the tank giving time to the team to getting used to the technology and reaching the appropriate level of confidence to finally perform the last flight directly from the outside of the tank.
The ability of Elios to capture visuals with 0.2 mm/pixel resolution was highly appreciated by the company.
All the point of interest were inspected over a very short period of time without having to expose anyone to risk. The quality of the images, the rapidity of the inspection and the substantial benefits of not having to do the job using rope access or scaffolding were all points that made the team that had requested the inspection extremely satisfied by the use of Elios.
Once the inspection was completed and while the whole team was debriefing, an interesting point was raised relative to the possibility to provide quick a response to emergency cases. The team that had requested the inspection foresees Elios as a quick-to-deploy solution in the case of unexpected situations; for example when a problem is suspected or detected within a tank. Indeed, not having to fully clean the tank before proceeding to an inspection, with possibly some non-explosive gas remaining inside, would provide considerable time savings.
Interested in the Flyability Elios?
COPTRZ are the UK exclusive supplier of the Flyability Elios. Contact us or call 0330 111 7177 to find out how the Elios can revolutionise your business.
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