Technical Lead - LOCA Analyst

Location: Derby or Warrington

Organisation: Engineering

Department: Manufacturing Engineering, Plant 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 Plant Performance Lead, the technical lead for Loss of Coolant Accidents (LOCA) analysis will be responsible for the technical and programme delivery of the thermal and hydraulic performance analysis to verify plant performance following a LOCA or initiation of the Emergency Core Cooling safety measure.

The role will involve working alongside systems design team to understand the technical nature of the reactor plant design and produce thermal hydraulic analyses which characterises system performance, informs intelligent design decisions and ultimately verifies the performance and safety of the final design. 

The successful candidate will provide technical leadership and coordination of a small team of engineers to ensure the delivery of LOCA analysis which supports design development, informs code validation activities and ultimately underpins the reactor plant safety case during Generic Design Assessment (GDA) by the Office of Nuclear Regulation (ONR).  This will include leading the development of robust and validated analysis methods using industry standard approaches, the creation and management of representative models, and assessment of transient performance during faulted and safety systems operations.

The LOCA analysis technical lead will have expertise in thermal hydraulic analysis of reactor plant designs, familiarity with nuclear plant analysis codes (including RELAP and CTF), as well as a strong foundation in safety principles and associated analysis approaches (e.g BEPU). 

Key Responsibilities

  • Work with the plant design engineers to understand the technical nature of the reactor plant as well as the evidence required to inform technical decision making verify plant performance.
    • Apply technical expertise to direct the analysis programme, including definition of the analysis basis, selection and justification of appropriate method, and technical supervision to supporting analysts.
    • Define and manage requirement traceability from design through to analysis, models and method validation.
    • Ensure appropriate quality is achieved in designated aspects of the analysis programme.  Undertake local technical reviews and input to the main project technical review gates. 
    • Work alongside the method validation lead to ensure appropriate method validation is in place at each analysis stage, and provide technical expertise into the code validation programme and rig design programmes.
    • Develop and deliver detailed plans for the assigned technical discipline.
      • Act as technical authority for LOCA analysis internal and external to the company. 
      • Understand and articulate technical and programme risks, managing them as appropriate with the Reactor Plant Performance 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.

Required Competencies

Level Competency


  • Understands the appropriate level of Risk in the Company.
  • Has a grasp of any implications of Public Relations.
  • Understands and applies appropriate Corporate Governance to decision making.
  • Understands appropriate Commercial and Corporate law decision making.
  • Understands Safety & UK Regulatory Affairs


  • Business Case - Apply technical judgement to ensure the programme meets business needs. Manage the business case including determination of business benefit (tangible and intangible) and the measurement of actual benefits.
  • Create strategy (capability) - Contribute to the development of integrated strategy for the business.
  • Manage Budget - Receive budget and use and manage external agencies to conduct technical work.
  • Manage programme resources - define needs, recruit, develop and manage personnel to meet agreed plans and budgets.
  • Technical authority for the relevant areas.


  • Managing knowledge, information and data essentials
  • Deliver Programme - Define a project/programme of work, deliver programme milestones in line with agreed plans and budgets, manage risks, etc.
  • Awareness and understanding of SMR Quality Assurance (QA) processes and standards
  • Technical Communication Essentials
  • Leadership – leading functional and cross functional teams
  • Learning from Experience (LfE)
  • Knowledge of Pressurised Water Reactor (PWR) design, plant and behaviour during normal and abnormal operation
  • Environmental, Safety, Security and Safeguarding (E3S) regulations and principals (including application of As Low As Reasonably Practicable (ALARP) and Best Available Technique (BAT) principals)
  • E3S case methods (including nuclear safety classification), case structure and document generation
  • Generation and management of Verification and Validation (V&V) plans and evidence
  • Systems Thinking Essentials: Requirements development (including development of structured Requirements, Evidence, Definition and Verification (REDV) data and information) and management
  • Configuration management essentials
  • Thermal hydraulic principles and calculation
  • Reactor Island design and operating philosophy knowledge
  • Nuclear control and protection design
  • Reactor Plant transient definition
  • Reactor Plant transient thermal assessment
  • Core performance
  • Steam Generator (SG) performance
  • Decay Heat Removal (DHR) performance
  • Loss of Coolant Accident (LOCA) performance
  • Severe accident analysis (containment and consequences)
  • Computational Fluid Dynamics (CFD)
  • Software design and integration
  • Software quality and testing
  • Analysis Method and Model Development

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 thermal analysis programmes in support of design development from initial concept through to detailed design definition.
  • 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.