Case Study: Ensco 92 Drilling Rig Cleaning and Re-coating Pre-Load Tanks

Location: Hartlepool

During a scheduled shipyard visit amongst other planned activities there was an initial requirement to clean, remove the degraded existing coating and apply a new style soft coating (Clearkin Corrosion Master) to the internals of 2 x pre-load tanks with the aim of extending the tanks service life. This scope was then extended to include blasting and recoating of the additional mud pits, base oil and brine tanks. This necessitated the overall manning levels to increase from 6 to 10 and once completed this furthermore lead to Sureclean being awarded the project of UHP blasting and painting of the Cantilever deck.

Sureclean Scope

Provide manpower and equipment for the pumping out, cleaning and high pressure washing of the tanks and subsequent removal of the degraded existing coating and application the new coating in compliance with manufacturer's guidelines.

Technical Challenge

  • Implementing a safe system of work and ensuring that the internal tank surface area was prepared the specified surface profile to apply specialist coating as per client request.
  • Restrictions / Considerations
  • Hazardous Environment - Confined Space Entry Working, access and egress.
  • Waste containment and transfer.
  • Critical Path Project.

Key Facts

  • Project completed without safety or environmental incident.
  • Project completed on time and within budget.
  • Involved 10x Sureclean personnel, dayshift and nightshift working.
  • Working alongside others as part of a tank refurbishment programme, carrying out pre-repair cleaning and post -repair coating application.
  • Commendations received from the client which resulted in Sureclean being awarded subsequent workscopes onboard.

Additional Information

Not only did Sureclean successfully achieve the project deliverables associated with the pre-load tanks, upon completion Sureclean made such an impression on Ensco that we were approached to undertake the additional workscopes. The overall project duration increased from 28 days to 70 with Sureclean being commended as providing a 'First Class Service'.