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Performance of visual inspection of reactor pressure vessel (RPV) and RPV internals is mandatory according to plant pre-service and in-service inspection programs.

Execution during outages on the critical path, where time pressure is an issue, calls for rapid performance without compromising precision and reliability. Time constraints also require efficient contingency tools for ad-hoc inspections or foreign object search and retrieval (FOSAR).


Lifetime extension programs will demand additional inspection scope to be performed.

SUSI is a multi-purpose device for underwater visual inspection of various reactor areas and additional applications.


Visual inspection of:

  • RPV
  • RPV internals
  • Main coolant pumps
  • Reactor coolant lines and other piping
  • Pressurizer, accumulators and tanks (primary and secondary side)
  • Steam generators (primary and secondary side)


Other applications:

  • Core mapping (verification)
  • Observation of underwater component handling


Visual inspection of RPV and RPV internals using SUSI is performed by our highly qualified and experienced inspection personnel certified according to DIN EN ISO 9712 and ASNT / ANSI CP-189.


The universally applicable multi-purpose equipment family allows flexible use based on customer needs.

Your Benefits

  • Time savings on the critical path thanks to rapid and highly reliable performance
  • Improvement of plant safety and reliability
  • Reduction of radiation exposure
  • Outage optimization and therefore cost savings
  • Support to component lifetime extension programs
  • Decades of experience in outage services
  • Field service worldwide


Many customers request the availability of SUSI on site for the entire duration of their outage to ensure it is ready to use for ad-hoc tasks without delay.


Reactor types and designs:

  • KWU BWR and PWR
  • Framatome PWR
  • Westinghouse PWR
  • Babcock & Wilcox PWR
  • VVER


NPPs in:

  • Europe (Germany, Switzerland, France, Belgium, Netherlands, Sweden, Bulgaria, Slovenia)
  • USA
  • Brazil
  • South Africa
  • China

BWR: boiling water reactor
PWR: pressurized water reactor
VVER: water-water power reactor

Interested in Visual Inspection of Reactor Pressure Vessel and Internals?

CANDU Reactors VVER Reactors CANDO VVER Westinghouse