nuclear and energy

SPIRAGAINE is a major player recognized in the nuclear field, in France and internationally, thanks to our know-how and our expertise.

We support all French nuclear power plants, as well as their service providers, in order to respond to all types of technical ventilation applications with a wide range of dedicated products.

Pressure relief sheath

MEDCP sheath

MEDGV sheath

Examples of applications:


  • Depression of the primary circuit (MED CP sheath)
  • Depression of SAS GV (MED GV duct)
  • Depression of the airlock (pressure reducing duct)
  • Polar bridge ventilation
  • GV drying before inspection
  • Ventilation of confined areas (tank, premises, SAS)
  • Filtration
  • Hot air supply
  • Dusting

Site ventilation duct

Corresponding product family:

Find below the most widely used nuclear product families. We have a wide range of standard or tailor-made products in accordance with the PMUC standard in order to meet the various applications encountered in the nuclear field.
We also have a range of “VENTILAIR” portable ventilators, allowing the extraction of welding fume, stale air, etc. and airlock ventilation, supply of fresh air in confined places.

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We adapt to your technical constraints to
make a product that meets your needs.