Office for Nuclear Regulation

New operating rule for HAL Stocks at Sellafield

16 March, 2015

The Office for Nuclear Regulation (ONR) has agreed a new Operating Rule (OR) for Sellafield Ltd in the way it controls Highly Active Liquor Stocks (HAL).

HAL stocks specifications have successfully delivered significant reductions at the facility over the past 14 years. The new operating rule provides adequate regulatory control while continuing to deliver year-on-year reductions in HAL stocks at Sellafield.