Case Study – Tooltec Caisson and Conductor Cleaning and Inspection Tool

Unmanned UAV inspections of FPSO Oil Storage Tanks

Working in collaboration with vessel owner Bumi Armada and classification society DNV GL, Texo used an unmanned aerial vehicle (UAV) to inspect a vast oil storage tank on the Armada Kraken FPSO in July.

Inspection of the tank was completed by Texo DSI using two personnel in 96 hours over four shifts. To capture the same extent of inspection, using traditional rope access, would take a four-man team circa 14 days to complete, around 672 personnel hours.


Texo DSI’s deployment of a UAV meant that no operatives had to enter the tank during the inspection, making the operation less hazardous. Texo’s drone pilot and inspector provided a live video stream of the close-up inspection from inside the tank to the attending DNV GL surveyor who reviewed the footage to conduct the survey.

Completing the job in a shorter timeframe and with fewer operatives meant less bed space was required on the FPSO which also generated substantial savings.

Getting the storage capacity back into operation in a safe and timely manner is a big plus for the operator, which needs to get each tank on the FPSO checked and verified every five years.


UAV drones to inspect the large Oil storage tanks on FPSO’s without risk to personnel

UAV drones inspect


By working with Texo DSI on the remote inspection of the Armada Kraken FPSO, we were able to reduce downtime for the owner as well as reducing the risk to surveyors and personnel onboard. As a result of the successful survey we could also certify that Texo DSI meets DNV GL and IACS RIT requirements.”

The UAV, which is fitted with lights and protected by a special cage, provides real-time, visual images for users. Footage can also be recorded and viewed later.

Next steps

The next step is to start providing 3D visual models for clients and conduct inspections in an explosive-proof environment.


Case Study

Texo DSI

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