ORCA

ORCA is an independent module, designed to provide remote underwater ultrasonic examinations of reactor pressure vessel nozzle to safe end, nozzle to pipe, and safe end to pipe welds.

Key features

• independent module for PWR inspection
• installation/de-installation of the ORCA manipulator by use of remote docking system and the “jib” crane located on the “refueling bridge”
• underwater operation up to 20 m
• IP protection level: IP 68
• main air supply: 6 bar
• power supply: 110/220 VAC, 50/60 Hz
• operating voltage: 28 VDC
• rotation speed: 15°/s
• repetitive linear positioning accuracy: 0.2 mm
• repetitive angular positioning accuracy: ± 0.2°
• main axis controlled by resolvers
• circumferential scan:
• resolution 0.5 mm (put in deg. depend on nozzle ID value)
• speed 90 mm/s (put in deg. depend on nozzle ID value)
• axial scan:
• resolution 1 mm
• speed 60 mm/s