At-sea test of a large diameter steel, cold water pipe

Technical Report · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6927575

Blevins, R W; Donnelly, H L; Stadter, J T; Weiss, R O; Perez y Perez, L

During December 1978 and January 1979, a series of tests were conducted off Santa Catalina Island, California, on a large-diameter steel pipe. The pipe was 5 ft (1.52 m) in diameter and made up in 20-ft (6.10 m) sections to obtain a total length up to 500 ft (152.4 m). Deep Oil Technology's X-1 semi-submersible platform was used to support the pipe through a gimbal joint and the platform was moored with spring buoys in 1000 ft (304.8 m) of water. The objectives were to evaluate the at-sea performance of various configurations and to use the test results to verify or improve existing time and frequency domain analyses of cold-water pipes for Ocean Thermal Energy Conversion (OTEC) plants. The configurations tested were platform alone; platform with 120-ft (36.58 m) pipe, with 300-ft (91.44 m) pipe, with 500-ft (152.4 m) pipe and with 384-ft (117.0 m) pipe including a U-joint at 162 ft (49.38 m). The results of the analyses indicate that the frequency locations of the spectral peaks are generally well predicted, but comparison of the peak values is in poorer agreement.

• Research Organization: Johns Hopkins Univ., Laurel, MD (USA). Applied Physics Lab.
• DOE Contract Number: AI01-77ET20342
• OSTI ID: 6927575
• Report Number(s): DOE/ET/20342-T8; ON: DE84009393
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140800* -- Solar Energy-- Ocean Energy Systems
ACCELERATION
ALLOYS
BENDING
DATA
EXPERIMENTAL DATA
FREQUENCY ANALYSIS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
NUMERICAL DATA
OCEAN THERMAL POWER PLANTS
OFFSHORE PLATFORMS
PERFORMANCE
PIPES
POWER PLANTS
SOLAR POWER PLANTS
SPECTRA
STEELS
STRESSES
THERMAL POWER PLANTS