Sellafield Site Ion Exchange Effluent Plant (SIXEP)
Sellafield, Cumbria, UK · Construction 1980s, Operations 1986-Present · Part of ongoing Sellafield operations and decommissioning budget
The judgement call
Account-gated at launchSIXEP has been a critical facility for reducing radioactive discharges from Sellafield for decades. - The plant was under construction when an incident occurred in 1983, highlighting the importance of robust design and operational procedures. - Its continued operation is vital for the site's environmental performance and decommissioning efforts.
Key engineering challenges
Treating radioactive effluent from reprocessing operations to reduce environmental discharges. - Maintaining and upgrading an aging plant to meet evolving regulatory standards. - Managing complex chemical processes involving ion exchange for radionuclide removal. - Ensuring continuous operation to support other Sellafield facilities.
Project facts
- Client / owner
- Sellafield Ltd
- Lead contractor
- —
- Lead designers
- —
- Project type
- new build (original), upgrade (ongoing maintenance)
- Scale
- Treats radioactive effluent, processes 125 m3 of water
- Disciplines
- nuclear; chemical; process; mechanical; electrical; civil; waste management
- Standards & frameworks
- ONR, Environmental Agency regulations
Sources: NDA Blog: SIXEP at 40: the unsung environmental hero at Sellafield (https://nda.blog.gov.uk/sixep-at-40-the-unsung-environmental-hero-at-sellafield/) - NEI Magazine: Effluent treatment plant installed at Sellafield (https://www.neimagazine.com/news/effluent-treatment-plant-installed-at-sellafield/) - Harvard ADS: Radioactive Effluent Treatment Plant—Sellafield Reprocessing Factory (https://ui.adsabs.harvard.edu/abs/1987PIMEA.201....1H/abstract) - Dalton Nuclear Institute: Radioactive effluent treatment (https://www.dalton.manchester.ac.uk/research/impact/radioactive-effluent-treatment/)