In Situ Test System

ROVcone

ROVcone

The ROVcone system allows operators to deploy a lightweight unit that still deliver 1000 kg push force for in situ soil testing or sampling. The system can be paired with any work class ROV, trenching machine or similar subsea equipment.

The ROVcone can be used for CPT and T-Bar in situ testing to around 4.0 m and push sampling to around 1.0 m in uncemented soils.

A unique feature of the system is the wire-free (acoustic) real-time communications between the penetrometer and the ROV which eliminates cabling, reduces snag hazards, and speeds up installation and removal to/ from the ROV.

Applications

The unit is ideal for route surveys, subsea developments, drill cuttings pile surveys, decommissioning surveys, and for locations which may be problematic for non-ROV conveyed systems to access or which require a high degree of precision or visual reference to access.

The ROVcone can also be operated in a standalone frame as a crane or an A-frame-deployed seabed unit.

Technical Specifications

PENETROMETER SYSTEM DRIVE UNIT SPECIFICATIONS

  • Maximum thrust force approx. 10 kN
  • Hydraulic drive motor (requires hydraulic supply from ROV)
  • Weight in air/ water approx. 21 kg/ 18 kg (excl. rods)
  • Push rods 25 / 36 mm dia. (25 standard)
  • Maximum water depth 2000 m

IN SITU TEST SPECIFICATIONS

  • CPT cone 10 cm² projected tip area, 60° apex cone
  • Tip resistance, sleeve friction (compression sensor), and pore water pressure
  • T-Bar 50/ 100/ 250 cm² options
  • Push speed 2 cm/s
  • Selection of CPT cones available with sensor ranges to suite project water depth (200-2000 m) and application class of test precision (Class 1 to Class 3)