Office for Nuclear Regulation inspectors took action following safety breaches at the Magnox Reprocessing Separation Plant.
Whilst Sellafield Ltd was proactive in identifying some of the problems, ONR decided it was necessary to issue the Improvement Notice.
The main area of concern was a failure to follow Operating Instructions, which are measures in place to keep the plant safe. Although no harm or release of radioactivity occurred, these incidents compromised nuclear safety.
Sellafield Ltd acknowledges the importance of good conduct of operations and was already developing a programme of improvements prior to this Improvement Notice being served. ONR welcomes this strong commitment to improve standards at the Magnox Reprocessing Separation Plant.
Sellafield Limited has until 30 September 2016 to complete the necessary improvements.