By means of innovative approaches and solutions, we are at the forefront of nuclear industry, meeting current customers’ needs, as well as anticipating future developments.

Archer

ARCHER is designed to provide eddy current and ultrasound examinations of reactor pressure vessel head penetrations by the use of various test modules and to perform automated surface repairs of J-groove weld and tubes' outside surface below the weld on both PWR and VVER type of nuclear power plants.

Key features:
  • different modules used for various types of RPVH geometry
  • easy modules exchange through the docking system without personnel having to enter below the head region
  • full scope inspection of both PWR and VVER RPVH
  • all penetrations accessible without manipulator repositioning
  • remotely operated distance up to 200 meters
  • IP protection level: IP65
  • main air supply: 6 bar
  • power supply: 110-220V AC, 50-60 Hz
  • rotation speed: 12 °/s
  • linear horizontal speed: 100 mm/s
  • linear vertical speed: 100 mm/s
  • linear positioning accuracy: ± 0.2 mm
  • angular positioning accuracy: 0.3°
  • absolute positioning system
J-groove weld module
  • eddy current examination of J-groove weld shell and nozzle side
  • designed to cover complex weld geometry
  • applied array probe (PRO ARCHER)
  • rotation speed: 0 – 12 °/s
  • linear vertical speed: 0 - 100 mm/s
  • linear positioning accuracy: ± 0.2 mm
  • angular positioning accuracy: ± 0.2°
Gap module
  • designed to perform ET and UT examination from the inner surface of the tubes
  • special blade probe used for inspection with embedded TOFD probes, eddy current probe and UT 0°probe
  • detection and length information of surface flaws conducted by eddy current probe
  • UT inspection using TOFD technique for detection and sizing of circumferential and axial cracks
  • straight beam ultrasound examination for leak path detection
  • rotation speed: 0 – 12 °/s
  • linear vertical speed: 0 - 100 mm/s
  • linear positioning accuracy: ± 0.2 mm
  • angular positioning accuracy: ± 0.2°
Non sleeved CRDPP module (open housing)
  • used for penetrations without thermal sleeves
  • delivery of eddy current and array of ultrasonic probes at the inner surface of the penetrations
  • detection and sizing of circumferential and axial cracks
  • leak path identification with straight beam ultrasound probe
  • water supply and water collecting system
Automated surface repair module
  • removal of flaws discovered by eddy current examination from J-groove weld surface
  • supported by EddyOne Mending
  • 3 axes of movement
  • definition of the grinding area based on the surface probing and UT inspection results
  • built-in safety features with respect to grinding depth
  • grinding does not affect originally designed structural integrity
  • depth verification with the second probing
  • ASR is a non-welding process – no additional source of intensive heat
  • excellent ALARA results
Additional modules
  • module for ET/UT inspections of vent pipe with small diameter probe
  • module for the VT inspections of the penetration tube's outside surface and thermal sleeve
  • module for the VT inspections of the latching tool mechanism of CRDM