Senior Pipe Stress Engineer

The Senior Pipe Stress Engineer coordinates the development and delivery of complete piping systems for the SMR projects.  A Senior Piping Engineer will integrate the piping activities from the development of the P&IDs by System Engineering, through the layout performed by Design Development, the stress analysis & piping support engineering performed by Applied Mechanics, solicit input from Materials Specialists on the selection of piping materials, the Welding Engineer on any special welding requirements, work with Procurement for the purchase of the piping systems including managing technical issues with vendors, and work with Construction on piping related issues during planning and actual construction.

Location: Almondsbury (Bristol Area), UK – Relocation Assistance Available!

Important Eligibility Requirement: This position involves work subject to U.S. Department of Energy regulations under 10 CFR Part 810. Candidates must be legally eligible to obtain authorization to work with certain nuclear technologies and technical information. Eligibility will be evaluated as part of the hiring process.

Primary Responsibilities:

• Lead nuclear piping design and stress analysis for ASME Section III Class 1, 2, and 3 systems
• Perform advanced fracture mechanics, fatigue, SCC crack growth, and fitness-for-service evaluations
• Develop and implement methodologies such as Leak-Before-Break (LBB) and High Energy Line Break (HELB)
• Conduct piping stress analysis using industry tools (AutoPIPE, ANSYS, ABAQUS, PIPESTRESS)
• Analyze pipe supports per ASME NF and coordinate with support design teams
• Develop and review engineering deliverables including stress reports, calculations, and line lists
• Interface with Smart3D/SmartPlant models to resolve layout and flexibility issues
• Ensure compliance with nuclear codes and standards (ASME BPVC III/XI, B31.1, B31.3, API-579, BS7910)
• Provide technical leadership in probabilistic fracture mechanics and risk-informed methodologies
• Support fabrication, construction, and field issue resolution
• Review vendor and supplier documentation for compliance
• Lead R&D programs and participate in benchmarking and regulatory initiatives
• Develop proposals, schedules, and project budgets
• Mentor engineers and lead multidisciplinary teams

Requirements:

• Bachelor’s degree in Mechanical, Structural, or Nuclear Engineering (MSE/PhD strongly preferred)
• 15+ years of experience in nuclear piping analysis and component integrity
• Extensive experience with ASME Section III Class 1, 2, 3 piping analysis
• Expertise in fracture mechanics and structural integrity assessment
• Experience with piping tools such as AutoPIPE and Smart3D environments
• Knowledge of pipe support design and integration
• Familiarity with nuclear regulatory requirements (US NRC, CSA, REGDOC)
• Strong leadership, communication, and collaboration skills
• Eligibility to work under 10 CFR Part 810

Preferred Qualifications:

• Professional Engineer (P.Eng. or PE) license
• Experience with BWR, CANDU, or SMR reactor systems
• Experience with probabilistic tools such as xLPR or PRAISE
• Experience using GT STRUDL, PV Elite, or similar tools
• Advanced research background and publication record
• Experience contributing to codes, standards, or industry working groups
• Teaching, mentoring, or academic collaboration experience

A Generation Ahead by Design™
Investing in people who power the future.

We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self…your health, your future, and your career growth. This includes:

Benefits:

• Private health insurance for physical and mental health, 24/7 GP access, dental/optical cashback and travel insurance for you and your family
• 25 days annual leave plus bank holidays, with Christmas shutdown
• Hybrid work opportunities available where business needs and role requirements allow
• Education assistance to support continued professional growth, reimbursement of professional membership fees
• Employer matched pension contributions, life insurance, enhanced maternity/paternity benefits

If you’re driven to solve meaningful challenges and make a lasting impact, we invite you to build your career at Holtec—a generation ahead by design™.