Deterministic Safety Analysis (DSA) Engineer II

Holtec; Almondsbury; On-site; GBP 65,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

25 days annual leave

Hybrid work opportunities

Education assistance

Employer matched pension contributions

Life insurance

Enhanced maternity/paternity benefits

Job summary

Holtec in Almondsbury (Bristol Area), UK is seeking a Deterministic Safety Analysis (DSA) Engineer II to develop methods and perform analyses demonstrating SMR-300 safety and licensing conformance. The role covers AOOs, DBAs, and evaluating core and containment performance, with code development and V&V responsibilities.

The candidate will contribute to licensing documentation, collaborate with multidisciplinary teams, and ensure traceability and regulatory compliance per NQA-1, with relocation

Qualifications

• B.S. degree in nuclear or mechanical engineering from an accredited college
• Familiarity with thermal-hydraulic behavior of LWRs
• Familiarity with industry codes such as RELAP5, RETRAN, COBRA, VIPRE, GOTHIC
• At least 3 years’ experience developing/using codes and methods for LWR safety analyses
• Excellent technical writing, interpersonal, and communication skills
• Eligible to work under 10 CFR Part 810

Responsibilities

• Develop and perform deterministic safety analyses to demonstrate SMR-300 safety/licensing compliance
• Evaluate reactor behavior during AOOs and DBAs including thermal-hydraulic response, core performance and radiological consequences
• Analyze key plant systems such as reactor core, reactor coolant system, engineered safety features, and containment
• Support licensing documentation including safety analysis reports and regulatory inquiries
• Develop, maintain, and apply analytical methods and computer models used in safety analyses
• Perform verification and validation of analysis codes to ensure accuracy, reliability, and regulatory compliance
• Collaborate with multidisciplinary engineering teams to integrate design inputs into safety evaluations
• Prepare detailed technical reports and documentation in accordance with NQA-1 standards
• Ensure analyses are traceable, reproducible, and compliant with regulatory requirements

Skills

Technical writing

Interpersonal skills

Communication skills

Education

B.S. in nuclear or mechanical engineering

Tools

RELAP5

RETRAN

COBRA

VIPRE

GOTHIC

Job description

Career Opportunities: Deterministic Safety Analysis (DSA) Engineer II (1719)

TheDSA Engineer II will be responsible for developing methods and performing analyses to demonstrate that the SMR-300 satisfies its safety and licensing requirements. These types of analyses include evaluations of the reactor core, reactor coolant system, engineered safety features, containment, and radiological releases associated with anticipated operational occurrences (AOOs) and design basis accidents (DBAs). Additionally, the DSA group is responsible for the development, verification, and validation of the computer codes used in these analyses.

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

Primary Responsibilities:

• Develop and perform deterministic safety analyses to demonstrate that the SMR-300 reactor meets applicable safety and licensing requirements.
• Evaluate reactor behavior during anticipated operational occurrences (AOOs) and design basis accidents (DBAs), including thermal-hydraulic response, core performance, and radiological consequences.
• Analyze key plant systems such as the reactor core, reactor coolant system, engineered safety features, and containment.
• Support the preparation of licensing documentation, including safety analysis reports and responses to regulatory inquiries.
• Develop, maintain, and apply analytical methods and computer models used in safety analyses.
• Perform verification and validation (V&V) of analysis codes to ensure accuracy, reliability, and regulatory compliance.
• Collaborate with multidisciplinary engineering teams to integrate design inputs into safety evaluations.
• Prepare detailed technical reports, calculations, and documentation in accordance with quality assurance standards (e.g., NQA-1).
• Ensure analyses are traceable, reproducible, and compliant with applicable regulatory and industry requirements.

Requirements:

• B.S. degree in nuclear engineering, mechanical engineering, or closely related field from an accredited college or university
• Familiarity with thermal-hydraulic behavior of light water reactors (LWRs)
• Familiarity with industry computer codes such as RELAP5, RETRAN, COBRA, VIPRE, GOTHIC, etc.
• At least 3 years’ experience developing and/or using codes and methods associated with LWR safety analysis calculations
• Excellent technical writing, interpersonal, and communication skills
• Eligible to work under 10 CFR Part 810

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:

• 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™.