Porvair Filtration Group provides engineered waste management solutions designed to meet the stringent regulatory and operational requirements of nuclear facilities.
Our filtration architectures utilise advanced sintered metal media, high‑integrity porous materials, polymer composites and corrosion‑resistant alloys to ensure reliable performance under elevated temperature, radiation, and chemically aggressive conditions.
We support solid, liquid, and gaseous waste streams with systems capable of high particulate retention efficiency, controlled differential pressure behaviour, and long‑duration service life in mission‑critical environments.
From HEPA-grade containment modules and criticality‑safe filtration housings to effluent treatment skids and decommissioning-specific capture systems, each solution is fully validated through ASME, RCC‑M, and other process relevant nuclear QA frameworks.
Our engineered designs mitigate contamination risk, optimise waste volume reduction, and deliver traceable, compliant performance for the full nuclear waste lifecycle.
Vitrification
Our self‑cleaning pulsed jet filtration units are used for hot‑melt vitrification furnace off‑gas treatment.
The system provides continuous, high‑efficiency particulate removal while maintaining controlled containment conditions required for nuclear processing operations.
Developed and supplied for application at Sellafield, UK, the filtration technology was engineered in collaboration with Veolia Nuclear Solutions and the National Nuclear Laboratory (NNL). The units deliver:
• Automated pulsed‑jet cleaning for sustained filter performance and extended service life
• High‑temperature and radioactive particulate handling capability
• Robust containment design suitable for nuclear fuel cycle and waste
vitrification processes
• Optimised flow and pressure management for stable furnace off‑gas
operation
• Low‑maintenance operation to support long‑duration campaigns
This solution provides a reliable, engineered approach to off‑gas filtration within demanding vitrification and nuclear research environments.
HEPA High Strength Radial Filter Elements
Porvair’s unique 2,000 cfm radial flow filters, low ΔP HEPA filter with extreme dirt holding capacity was developed at our Ashland, VA facility for a US DOE waste treatment plant.
This filter is now ASME AG-1, Section FK compliant, DOE approved, installed and operational.
Made from high purity borosilicate glass fiber, this design provides for heat stable potting compound, flame resistant media and has a high humidity tolerance. The extreme dirt holding capacity is to be credited to Porvair’s patented pleat separation technology.
Available in both safe and remote change format.
Due to this filters' documented design, performance and quality, variants of this design are now being used in existing military and commercial locations.
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