TDI-Brooks Places New CPT System To Use

Marine knowledge acquisition companies firm TDI-Brooks mentioned it has carried out two tasks with its new Neptune 5000 (N5K) cone penetration testing (CPT) System delivered from Datem in 2021.

The primary program was carried out in October for an offshore wind farm mission on the U.S. East Coast. It concerned the acquisition of roughly 90 PCPTs. The N5K CPT soundings for this mission had been acquired with a 5 cm2 cone and achieved as much as 5-m penetration in these principally sand/gravel seafloors.

The second program was carried out in November for a pipeline design set up, additionally on the U.S. East Coast. For this program over 60 N5K CPT soundings had been acquired utilizing each 5 and 10 cm2 cones. Most of those websites had been 5-m pushes however others had been as much as 10-m pushes in a wide range of sediment sorts from gentle to sandy seafloors. This program additionally included some CPT pore stress dissipation checks at chosen websites.

Each applications additionally included vibracoring (VC) with a Feritech FT550 and field core (BC) acquisition to assist the environmental analysis of the seafloors alongside the routes. One of many applications additionally concerned seabed ROV and digital camera reconnaissance.

Following completion of those geotechnical campaigns, TDI-Brooks shipped the soil samples again to their licensed soil testing laboratory in Faculty Station, Texas for the post-survey onshore testing and completion of factual testing studies.

The TDI-Brooks Neptune 5000 CPT System is a coiled rod system with a 35kN push functionality. The system is straightforward mobilized on one among TDI-Brooks’ U.S.-based analysis vessels. It has a most penetration of 20 meters. It is a superb instrument for investigating seabed circumstances previous to seabed installations similar to pipelines, energy cables and underwater constructions. The system has actual time management and knowledge acquisition and built-in automated security cut- outs making it excellent for shallow geotechnical assessments. This instrument is designed for thrusting 5 cm² or 10 cm² digital cones. The unit can thrust as much as a most of 70 MPa and has a depth score of 3000 meters. Discipline outcomes comprise penetration depth, cone resistance, sleeve friction, pore stress, and inclination from vertical 20 instances per second.

Along with the N5K CPT system, TDI-Brooks can present gravity CPT (gCPT) unit for pipeline and cable route surveys in softer seafloor particularly the place a seafloor CPT could sink. The aim of the gCPT instrument is to move a exactly calibrated reminiscence cone penetrometer all the way down to the seabed/lakebed to collect dynamic PCPT cone knowledge from the mud line to 10+ m BML.

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