Context and challenges
This client is a leading group in the UK nuclear sector.
It is responsible for the safe and secure operation and clean-up of the Sellafield nuclear site. It now comprises 400 buildings spread over 10 square kilometers and employs around 10,000 people.
In order to ensure the continuation of safe site operations, the client needed to address the integrity of an ageing ventilation system carrying a category 1 risk rating assigned by the nuclear regulator.
The operation was time sensitive, with environmental authorities pressuring on this client to swiftly address the issue and ensure the safety of the pipework which is classified as C5 (the highest level of contamination).
The project’s success would be based on two key deliverables: the creation of a bypass section of ductwork (a Duct Control Connection Assembly, or DCCA) and finding a way to cut the ducting while ensuring the contaminated area remained sealed off.
This client has mandated Assystem as part of the AXIOM collaboration (a multi-disciplinary joint-venture design and safety contract) to design and produce a proof of concept design and subsequently the detailed design for implementation on site (22” duct bypass and fan removal).