Probabilistic Risk Assessment Engineer

Title: Probabilistic Risk Assessment Engineer

Location: Bellevue, Washington, United States

Job Type: Full‑time

Terra Power® is a nuclear energy technology company based in Bellevue, Washington. At our core, we are working to raise living standards globally. The essential factor? Energy. In 2006, Bill Gates and a group of like‑minded visionaries decided that the private sector needed to take action. They believed that business interests could develop a scalable, sustainable, low‑carbon and cost‑competitive energy source that would allow all nations to quicken their pace of economic development and reduce poverty.

Terra Power’s goal is to provide the world with a more affordable, secure, and environmentally friendly form of nuclear energy.

Terra Power, LLC was established to bring together the strengths and experience of the world’s public and private nuclear energy sectors to develop a new generation of nuclear reactors that would responsibly meet growing energy needs around the globe. Its approach addresses the traditional shortcomings of nuclear power, in terms of safety, cost effectiveness, environmental soundness, and resistance to weapons proliferation.

Terra Power is seeking to hire highly motivated and forward‑thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape. We are an equal opportunity employer.

Terra Power, LLC. is seeking a Probabilistic Risk Assessment (PRA) Engineer to support the development of the Natrium Sodium‑cooled Fast Reactor (SFR) Program. The PRA Engineer will work with the Risk Assessment team and is responsible for performing PRA and severe accident analysis for the Natrium reactor design. The PRA Engineer is primarily responsible for internal and external events PRA to be performed in coordination with transient and consequence safety analysis and other engineering disciplines to design a reliable and safe plant.

Additionally, the PRA Engineer will use developed PRA models to provide risk information such as importance measures and changes in risk metrics to inform design and licensing decisions. Other engineering activities include contributing to the development of computational methodologies and models, participating in hazard analysis, participating in Phenomena Identification and Ranking Table (PIRT) exercises, and participating in Structures, Systems, and Components (SSC) classification, Licensing Basis Events (LBE) selection, and Defense‑in‑Depth (DID) evaluations.

The PRA Engineer will be interacting with other groups via interviews, emails, meetings, and other avenues to develop the risk models. The position requires sound written and verbal communication skills.

This position requires an understanding of PRA principles and preferably familiarity with the ASME/ANS Non‑LWR PRA standard. While this position requires knowledge of sodium fast reactor technology, this knowledge can be obtained on the job through various in‑house training workshops and interaction with Terra Power staff. This position requires relocation to Bellevue, WA.

• Contribute to the PRA work performed inside and outside of Terra Power in coordination with plant design, transient and consequence safety analysis, and other disciplines.
• Ensure that the PRA is appropriate and used for the reactor design and within regulatory requirements, guidance, and standards such as risk‑informed performance‑based technology guidance for Non‑Light Water Reactors (NEI 18-04) and ASME/ANS Non‑Light Water PRA standard.
• Participate in the development of planning and scheduling for PRA related activities.
• Provide technical guidance to engineers and managers on reliability and various PRA‑related topics.
• Participate in PRA peer reviews.
• Work on the development of event and fault trees, in‑vessel radiological transport models, containment transport models, and mechanistic radiological release categories for PRA models.
• Work with an interdisciplinary team of engineers to establish core and reactor SSC functional, reliability, performance, safety, and quality…