HMNB Portsmouth

Waste arisings do not occur at a constant rate and are difficult to determine as they are dependent on a number of factors such as equipment being declared as obsolete and legacy items being returned following site closures. The site is forecast to produce only small quantities of ILW, and volumes are estimated to 2063.

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Site Owner

Information is presented about wastes that existed at HMNB Portsmouth at the stock date (1 April 2025) and were forecast to arise after this date.

For background information about this site owner, please refer to the Site Information Sheets in the 2025 UK Radioactive Waste Inventory report.

The following page presents information about radioactive wastes at the specific site selected.

Information about spent fuel and nuclear materials is presented separately in the relevant 2025 Inventory report. For official figures and essential information about how the data has been produced, always refer to the UKRWI 2025 published reports.

View all 2025 waste stream data sheets for HMNB Portsmouth

Waste groupings

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Activated metals
Activated other materials
Asbestos & other insulation materials
Concrete & rubble
Conditioned
Contaminated metals
Contaminated other materials
Desiccant & catalysts
Flocs
Fuel cladding & miscellaneous wastes
Fuel element debris
Fuels & uranium residues
Graphite
High level waste
Inorganic ion exchange materials
Miscellaneous contaminated materials
Mixed wastes
Oils & other fluids
Organic ion exchange materials
Plutonium contaminated materials
Raffinate
Sludges
Soil
Uranium & thorium contaminated material
Total
stored
waste
Future
arising
waste
Lifetime
packaged
waste

Waste categories

Showing results for data originating from HMNB Portsmouth.

Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 12.8 40.9 53.7
LLW 0 0 0
VLLW 0 0 0
Total 12.8 40.9 53.7
Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 12.8 40.9 53.7
LLW 0 0 0
VLLW 0 0 0
Total 12.8 40.9 53.7
Waste category Volume (m3)
Reported at 1 April 2025 Reported future arisings Lifetime Total
HLW 0 0 0
ILW 15.2 44.0 59.2
LLW 0 0 0
VLLW 0 0 0
Total 15.2 44.0 59.2

Forecast waste arisings

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From Amersham and AWE Aldermaston to Winfrith and Wylfa – you can source site-by-site waste inventory data from sites across the UK nuclear industry here.