PSA Engineer I: Nuclear Risk & Safety Analytics (Hybrid)

Holtec International; Almondsbury; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Private health insurance

25 days annual leave

Hybrid work opportunities

Education assistance

Employer matched pension

Life insurance

Enhanced maternity/paternity benefits

Job summary

Holtec International in the United Kingdom is seeking an Probabilistic Safety Analysis (PSA) Engineer I to develop and apply PSA methodologies for the SMR-300 program. You will work with multidisciplinary teams on risk-informed design, safety analysis, licensing, and regulatory compliance, building probabilistic models and supporting thermal-hydraulic evaluations.

You will contribute to Level 1/2 PRA, event/fault tree development, and PSA deliverables, interfacing with design teams to ensure

Qualifications

• 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 probabilistic risk assessment and/or thermal-hydraulic analysis methods for light-water reactors
• Exposure to industry codes such as CAFTA, SAPHIRE, RiskSpectrum, RELAP5-3D, or MELCOR
• 2-4 years of experience in probabilistic risk assessment and/or thermal-hydraulic safety analysis for nuclear facilities
• Excellent technical writing, interpersonal, and communication skills
• Eligible to work under 10 CFR Part 810

Responsibilities

• Support development of PRA modules and/or associated thermal-hydraulic analyses under the supervision of senior engineers.
• Develop Level 1 and Level 2 PRA models for internal and external events during full power and low power / shutdown operating modes.
• Thermal-hydraulic analysis specialization: support RELAP5-3D and MELCOR modeling to simulate core and containment response for severe accident scenarios that inform PRA quantifications.
• Logic modeling specialization: support development of event trees and fault trees to estimate key design risk metrics including core damage frequency (CDF) and large release frequency (LRF).
• Support PSA model maintenance and updates that occur periodically as the SMR-300 design matures
• Use PSA results to support implementation of risk-informed programs; for example, Regulatory Treatment of Non-Safety Systems (RTNSS), Design Reliability Assurance Program (D-RAP), 10 CFR 50.69 risk-informed categorization and treatment of SSCs.
• Interface with the design team to communicate and implement PSA insights
• Ensure consistency and quality of all PSA deliverables

Skills

PRA development

Thermal-hydraulic analysis

Event fault tree modeling

Technical writing

Communication skills

Education

Bachelor's degree in nuclear/mechanical engineering

Tools

CAFTA

SAPHIRE

RiskSpectrum

RELAP5-3D

MELCOR

Job description

Holtec International in the United Kingdom is seeking an Probabilistic Safety Analysis (PSA) Engineer I to develop and apply PSA methodologies for the SMR-300 program. You will work with multidisciplinary teams on risk-informed design, safety analysis, licensing, and regulatory compliance, building probabilistic models and supporting thermal-hydraulic evaluations.

You will contribute to Level 1/2 PRA, event/fault tree development, and PSA deliverables, interfacing with design teams to ensure