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Chevron, The American Bureau of Shippin, and United States Coast Guard Logos

Tahiti Spar Ballast Tank ROV Inspection and Ultrasonic Thickness Gauging

Proceanic is pleased to announce that in April of 2013, ROV inspection of the ballast tanks onboard the Chevron Tahiti Spar was carried out by a Proceanic ROV Inspection Team, under the supervision of Chevron, The American Bureau of Shipping and United States Coast Guard.

“Close‐Up” inspection of all ballast tanks onboard the installation was carried out and accepted for Special Survey, by ABS and USCG. Ultrasonic Thickness Gaugings were also taken, for the purpose of hull condition assessment.

The gaugings were taken by means of a Cygnus Ultrasonic Gauge, attached to the ROV. Gaugings were also accepted for special survey purposes by ABS and USCG. These normally onerous tank inspections were carried out with:

  • No De-Ballasting
  • No Tank Cleaning
  • No Coatings Damage
  • No Ballast Tank Entry by Personnel
  • No Staging / Scaffolding
  • Minimal Operational Upset

This meant faster turn‐around of inspections, significant cost savings, reduced personnel risk and reduced operational interruption for the facility. All without compromising quality of inspection and gauging.

Ballast Tank inspections and thickness gaugings were carried out over a 5 day period by a two‐man team of Proceanic ROV operators (who also happen to be Naval Architects/Marine Engineers), equipped with two state‐of‐the art VideoRay™ Pro 2 ROV Systems.

All “Close‐Up” inspections and thickness gauging records are captured on digital video for quick and easy distribution and review as required after the inspection. Thickness Gaugings are also captured into standard IACS/ABS format reports.


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We would love the opportunity to talk to you about your project and explore how we can reduce cost, mitigate risk, optimize logistics and improve quality of deliverables.

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