Thermal Hydraulic Validation Engineers

Location: Derby or Warrington

Organisation: Engineering

Department: Manufacturing Engineering

Required Security Clearance: BPSS

The Company

Rolls-Royce SMR is a start-up joint special purpose vehicle (SPV) business, specifically created to design, construct and deliver a new fleet of Small Modular Reactors power plants that will be a critical and strategic player in the race to Net Zero carbon emissions globally.  Spun out of Rolls-Royce with its pedigree in engineering excellence but also attracting world class inward investment this is an exciting new business with an optimistic opportunity to be a global player in the coming years.


The Post

Reporting to the Reactor Performance Validation Lead, the performance validation engineers will be responsible for developing staged validation cases for the various thermal hydraulic performance methods utilised to verify the reactor plant design.

There are a number of opportunities within the SMR programme for both experienced and developing thermal hydraulic analysts to either lead or support different validation work streams, including:

  • Reactor plant transient and safety analysis;
  • Core thermal analysis;
  • Containment thermal analysis;
  • Severe accident analysis;
  • Computation Fluid Dynamics (CFD).

The thermal hydraulic performance engineers will work alongside the plant performance analysis teams to understand the nature of the reactor plant behaviour and the associated thermal hydraulic analysis methods.  The role will involve undertaking the process of thermal hydraulic phenomena identification and ranking, collaborating with the development team to identify test requirements and inform rig design, develop validation code cases for the various thermal hydraulic methods used to validate the design, and engaging with external bodies on the code validation and test evidence.

The successful candidates will have the opportunity to identify and assess experimental results from globally available test sources, act as test sponsors for the relevant SMR thermal hydraulic rig programmes, undertake uncertainty quantification analyses, identify code limitations and modelling guidelines, and produce code validation cases for submission into the Generic Design Assessment (GDA) by the Office of Nuclear Regulation (ONR).

Key Responsibilities

  • Work with the plant design engineers and performance analysis teams to understand the technical nature of the reactor plant as well as the evidence required to validate the analysis methods.
    • Apply technical expertise to assess complex thermal-hydraulic problems, assess and compare empirical evidence, and qualify performance method validity.
    • Work with the rig design teams to identify smart experimental requirement and influence technical direction of the rigs programme. Provide an intelligent interface for the thermal hydraulic rig design teams.
    • Develop and deliver detailed plans for the assigned technical activities.
      • Define and manage requirement traceability from the analysis through the validation code cases and into the rigs programme.
      • Work alongside the plant performance team to ensure appropriate method validation is in place at each analysis stage.
        • Understand and articulate technical and programme risks, managing them as appropriate with the Reactor Performance Validation Lead.
        • Work with due regard to Health, Safety and Environment. Comply with corporate, business and legislative requirements.  Champion company values, including Diversity, Equity and Inclusion.

Organisational Expectations

All RR SMR colleagues are expected to consistently contribute and nurture good teamworking through the organisation. They should be self-driven and motivated; seeking to motivate others. Colleagues are accountable for “above the line” behaviours at all times. The promotion of Nuclear Safety and wider Health & Safety policies and protocols is expected from all. All colleagues must role model the values and beliefs of the company ensuring that ethical decisions are made in line with the attainment of ED&I Charter and policy standards. Colleagues are expected to understand the principle of “right first time” with particular significance to Quality Assurance. Colleagues must be aware of their commercial and financial responsibilities and abide to agreed business processes. Colleagues should encourage best practice around Knowledge and Document management.

Qualifications & Experience

  • Qualified to degree level or equivalent in Physics, Engineering or a related discipline.
  • Chartered with a relevant professional institute (or equivalent professional accreditation).
  • Excellent knowledge of reactor plant thermal and hydraulic behaviour and associated analysis approaches.
  • Experience in delivering and leading complex thermal hydraulic validation cases.
  • Planning and organising skills to manage programme activities and deliverables.
  • Ability to communicate effectively with any audience, quickly establishing credibility and buy-in.

Health & Safety

All colleagues:

  • Support, promote and engage in company culture programs to create a leading and positive culture.
  • Report any shortcomings in arrangements.
  • Perform tasks and duties in accordance with training and instruction whilst taking care of their own health & safety and those of others who may be affected by their acts or omissions.
  • We are an equal opportunities employer.  We believe that embracing difference makes us stronger. Our diverse people bring us different skills – whatever their educational background, disability, gender, age, sexual orientation, race, religion or belief.
  • We welcome applications from individuals who have taken an extended career break or those who are transitioning from different sectors.
  • Travel:  Contracted location of work may be in Warrington or Derby although we operate a hybrid working policy allowing you to work remotely with the agreement of your leader, though may require some travel within the working day when visiting other branches or organisations.
  • Working hours: 37 hrs per week are standard office hours with some overtime as required.

Work conditions

Employment reward package

We offer a competitive salary and performance related bonus.  We are developing a selection of benefits that are flexible for you to choose from and will enable you to bespoke your total compensation to suit your needs.