Case studies

Mini ROV POT Water Tank Inspection & Cleaning

Oil and Gas

Air Control Entech
  • Project

    POT Water Tank Inspection & Cleaning

  • Type of facility

    FSO

  • Industry

    Oil and Gas

  • Safety

    Eliminates Rope Access / Scaffold towers and the risk of working at height. Eliminates tank emptying and super cholirification. Tank can be inspected and cleaned whilst in service.

  • Project efficiencies

    x2 ROV team (Pilot, Payload operator) 4 days vs x4 inspections / RA team & 3x Scaffolding Team, Tank Sentry 10-14 days inspection, tank cleaning team.

Case Study Main Image

Scope of Work

Full GVI & CVI of tank structure under class rules (DNV), SCUVA to be utilized to clean the silt and sediment present on the deck plate on completion of the Visual Inspection.

Solution

Full inspection & cleaning of the POT water tanks. All data collected and submitted into inspection reports for review and actions. Tanks required to be filled to allow for 100% inspection & cleaning. Completely eliminated confined space entry and eliminated tank being out of service.

Results & Benefits

  • Tanks don’t require to be emptied and isolations in place for minimal time.
  • No expensive scaffold towers within the POT Water tanks extensively reducing man hours.
  • Greater visibility and enhanced maintenance planning potential for the client through provision of robust evidence on the physical state of inaccessible internal tank structure and plating, i.e inner shell, top/bottom plates.
  • Use of multi-skilled teams reduced the risk with ROV but retaining the inspection expertise, leading to greater control over project delivery.
  • Project delivered on time with no disruption to ongoing plant activities.

Comparison

Conventional Access Air Control Entech
Personnel3 Scaffolders + 3 Rope Access Team / Rescue team Personnel1 Pilot 1 Payload Operator / Tank Sentry Rescue Team
Duration10-14 Days Duration4-5 Days
OperationsOut of service tanks for longer periods OperationsOut of service tanks for minimal (short) periods
HazardHigh Risk HazardLow Risk
DiffrentiatorHandheld camera and imagery DiffrentiatorSafer operationally / Full 4k video and imagery

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