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During a severe accident, the pressure inside containment might surpass the containment design pressure. To ensure containment integrity, the containment must be depressurized by venting. The vented gas must be filtered to the fullest extent possible to reduce the activity release to the environment. At the same time, the venting system must be operable under all conceivable conditions and function passively, that is, without electrical power.


AREVA NP's Filtered Containment Venting efficiently retains organic iodine 
The Filtered Containment Venting System (FCVS), comprising a venturi scrubber and a metal fiber filter section, retains aerosols and elemental iodine with high efficiency. Recent research, such as the PHEBUS tests, indicates that organic iodine (CH3I) also carries significant amounts of activity during severe accidents. This substance, therefore, must also be filtered out. The new FCVSPlus is an innovative extension of AREVA NP's existing FCVS. It adds a passive superheating module and a molecular sieve (I-CATCH). As a result, the retention of organic and elemental iodine is significantly increased.


Your benefits

  • Representative results obtained by operating large-scale test facility (no penalties for laboratory effects)
  • Organic iodine (CH3I) retention tests
  • Participation in the European Union’s PASSAM program
  • Integration and access to the Thermal-hydraulic Platform
  • Accredited test and inspection body
  • Accepted by ILAC

Interested in Qualifying Filtered Containment Venting Systems?

AREVA NP Germany