Storage of completed fuel assemblies prior to shipment to the Naval bases or to the Vulcan test facility is carefully controlled. Each module has its control rod locked in place and the storage facility takes account of accidents which could change the fuel configuration and introduce moderator. Scrap materials and arisings are as far as practicable recycled within the facility. The nature of the materials handled requires that strict accountancy measures are adopted for all fissile materials on the site. Periodic audits of the inventory of fissile material are undertaken by the Ministry of Defence.
All activities are subject to civil regulation by the Nuclear Installations Inspectorate.
Arrangements are in place to discharge the Generic Licence Conditions in a manner similar to other civil licenced sites. The Vulcan Test facility remains subject to regulation by the MoD. A Safety Committee, chaired by the General Manager of the Nuclear Components Division, operates as required by the Site Licence. The liquid and gaseous discharges from the plant are authorised by the Environment Agency. The disposal of solid low level waste material is undertaken at the Rolls Royce licenced disposal site at Crich in Derbyshire. The BNFL Drigg disposal site is not used for wastes from the manufacturig processes.