UK Public Sector Contracts & Tenders

United Kingdom National Nuclear Laboratory (UKNNL) intends on establishing a DPS route to market for the Operations, Site Work and Facilities Management requirement, across 8 Lots. Site Preparation Building and Facility Construction and Maintenance Services Industrial Production and Manufacturing Services Heating, Ventilation and Air Conditioning Mechanical and Electrical, Control and Instrumentation Hazardous Waste Asbestos, Waste Removal, Surveys and Remediation Access, Lifting and Maintenance

United Kingdom National Nuclear Laboratory (UKNNL) intends on establishing a DPS route to market for the Operations, Site Work and Facilities Management requirement, across 8 Lots. Site Preparation Building and Facility Construction and Maintenance Services Industrial Production and Manufacturing Services Heating, Ventilation and Air Conditioning Mechanical and Electrical, Control and Instrumentation Hazardous Waste Asbestos, Waste Removal, Surveys and Remediation Access, Lifting and Maintenance

UKNNL are seeking expressions of interest from suppliers capable of providing a split butterfly valve system suitable for powder handling and transfer operations. Minimum Technical Requirements • Be suitable for the transfer of powders and quick-connect/disconnect operations. • Accommodate connections in the region of: -100 mm to 50 mm diameter, or -100 mm to 80 mm diameter to minimise the potential for product blockage. • Be compatible with hydrofluoric acid (HF Resistant) at concentrations of approximately 25-50% by mass. • Be suitable for operating temperatures up to approximately 300°C. • Be suitable for operating pressures from full vacuum to approximately 3 barg. Additional Information • An integrated vacuum system for removal of powder from between split butterfly valve faces is not required. • Alternative materials of construction may be considered such as stainless steel. • Particular attention should be given to the suitability and chemical resistance of sealing materials for hydrofluoric acid service. • Sealing materials must be suitable for hydrofluoric acid (HF) at the specified process concentrations.