Cavendish Nuclear – Fabrication Efficiency at UK Nuclear Site


Initially, the staircases for the project were detached from exit platforms at each level of the facility, with each staircase being configured differently to match the platforms at multiple levels. This was further complicated by the need to develop designs and drawings of supporting structures and platforms, which due to the nature of the project design packages, existed as separate models.

Aligned with this, several of the supporting elements for the staircases had not been sufficiently defined, this included both the model of the main structure, and the model of all exit/entry platforms to the staircases.

Our Solution:

Waldeck have provided BIM based engineering solutions to support increased efficiency across the asset lifecycle of a Silos Maintenance Facility at a major nuclear plant.

By producing 3D fabrication packages and providing 2D drawings with 3D views of the site, Waldeck overcame the challenges faced. Our team successfully coordinated the new model against Cavendish Nuclear’s existing models to facilitate coordination within a single federated digital model.

The capability of the BIM platform also ensured the Waldeck team could tag each asset element within the facility with important data that would not only enable a fully intelligent, integrated model but also ensure safety, reduce risk and enhance efficiencies throughout the entire asset lifecycle, including operation, maintenance and decommissioning.

The Results:

This solution provided numerous benefits to the project, including:

  • A consistently efficient and timely approval process, with the client able to visualise areas and identify points of concern without searching through complex and flat 2D details.
  • Effective coordination of design and delivery, with the team able to easily access the model, resolve clashes in advance and make immediate adjustments.
  • Ability to address issues efficiently.
  • No fabrication non-conformances
  • Quality, time and costs were all better than expected.

Waldeck’s expert BIM services achieved the following results:

  • The provision of high quality models and drawings which removed errors, cut costs and reduced timescales by six weeks within the approval and installation stages;
  • This also allowed fabricators to progress the project efficiently – our expert’s reviewed fabrication drawings to ensure Waldeck’s design corresponded with the overall design.
  • Accuracy of designs allowed improvements to health and safety standards, which reduced installation issues and ensured a well-organised construction phase, with less time spent on-site assessing the project.

Waldeck Comment:

Engineering Director Terry Parsons said: “The project involved very specific guidelines and the nuclear context posed additional compliance challenges. The design documentation needed to be highly detailed and comprehensive in every way to satisfy the quality and process gates.”

“Our use of BIM helped to improve the accuracy of the designs as well as the speed of making approvals. Overall, our work provided the client with an assurance of our continued expertise and capability of advising on BIM, and on how to achieve efficiency savings at construction stage with off-site solutions and over the project lifecycle with properly coded and annotated models.”