CS&A Principal Engineer

# CS&A Principal Engineer
* Nuclear* Permanent /
* Warrington* United Kingdom
* 14/10/26
* On site
* ShareI apply##Assystem is an international company with one mission: accelerate the energy transition around the world.  Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.  We are a collective committed to the actors who are making the energy switch.

Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.  Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle.

The Group is currently ranked second in the world for nuclear engineering.  To ensure a viable, efficient, and reliable energy future for all##

Job Description The Box Encapsulation Plant (BEP) is being constructed on the Sellafield Limited (SL) site in Cumbria. The project is an integral part of the Magnox Swarf Storage Silo (MSSS) Program addressing the cleanup of one of the most hazardous legacy facilities on the SL site. When complete, the BEP is expected to treat nuclear waste recovered from MSSS, immobilize it, and prepare it for long-term storage.

In addition, the BEP may also process waste recovered during the decommissioning of other significant SL facilities including the First General Magnox Storage Pond and the Pile Fuel Storage Pond.

The candidate that we are looking to recruit should have a minimum of 10 years’ Nuclear experience. The candidate should have experience of working within a regulated and quality assured system (preferably nuclear) in roles reliant upon pragmatic design judgement and where engineering was a major part of the role.
** Project Specific Requirements
*** Report to SL CSA RE on a daily basis
* Provide leadership, guidance and support to JV CSA design and site engineering team
* Be prepared to visit the Warrington office min 3 days week and  Sellafield site on regular basis (ideally fortnightly) to confidently interact and engage with the multi discipline JV construction team and their subcontractors as required.
* Check and comment on CSA JV Design submissions during development including site modifications, complete NFR documents and submit to SL Doc Control.
* Review, Check and Accept or Reject design submissions, sign and submit PMACD to SL Doc Control.
* Review Check and Accept or Reject TQ/PP submissions,
* Review the progress of all Structural detail design drawings, calculations and documents to ‘As Built’ status by the JV CS&A designers.
* General understanding of service supports and blockwork wall substantiation.
* General understanding of fire strategy arrangements preferred. Understanding of fire rated service hanger supports. Attend meetings with Fire Consultants to review Conventional and Nuclear fire issues.
* Interface with multi discipline design team on project issues. Liase with SL Capability as required to substantiate site issues encountered during construction.
* Support to Safety case work including DJR’s.
** External Works
*** Good design understanding of external works, inc concrete slabs, SW drainage standard details etc
* Review and comment on all interfaces between the external works and the building external envelope. As the construction progresses.
* Regular engagement with the JV construction team and supply chain on site. Attend weekly meetings as required
* Attendance of weekly Risk review…