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Title: Technology Development Plan: Geotechnical survey systems for OTEC (Ocean Thermal Energy Conversion) cold water pipes: Final subcontract report

This report provides an overview of current and developing technologies and techniques for performing geotechnical investigations for siting and designing Cold Water Pipes (CWP) for shelf-resting Ocean Thermal Energy Conversion (OTEC) power plants. The geotechnical in situ tools used to measure the required parameters and the equipment/systems used to deploy these tools are identified. The capabilities of these geotechnical tools and deployment systems are compared to the data requirements for the CWP foundation/anchor design, and shortfalls are identified. For the last phase of geotechnical data gathering for design, a drillship will be required to perform soil boring work, to obtain required high-quality sediment samples for laboratory dynamic testing, and to perform deep-penetration in situ tests. To remedy shortfalls and to reduce the future OTEC CWP geotechnical survey costs, it is recommended that a seafloor-resting machine be developed to advance the friction cone penetrometer, and also probably a pressuremeter, to provide geotechnical parameters to shallow subseafloor penetrations on slopes of 35/degree/ and in water depths to 1300 m. 74 refs., 19 figs., 6 tabs.
Authors:
;
Publication Date:
OSTI Identifier:
5855259
Report Number(s):
SERI/STR-253-3485
ON: DE89000899
DOE Contract Number:
AC02-83CH10093
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Research Org:
Solar Energy Research Inst., Golden, CO (USA)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; OCEAN THERMAL POWER PLANTS; SITE CHARACTERIZATION; ACOUSTICS; BOREHOLES; DESIGN; ELECTRICAL SURVEYS; HAWAII; OCEAN THERMAL ENERGY CONVERSION; PENETROMETERS; PIPES; PROGRESS REPORT; SAMPLING; SEDIMENTS; SURVEYS; CAVITIES; CONVERSION; DOCUMENT TYPES; ENERGY CONVERSION; FEDERAL REGION IX; GEOPHYSICAL SURVEYS; MEASURING INSTRUMENTS; NORTH AMERICA; POWER PLANTS; SOLAR ENERGY CONVERSION; SOLAR POWER PLANTS; THERMAL POWER PLANTS; USA 140800* -- Solar Energy-- Ocean Energy Systems