Senior Nuclear Criticality Safety Engineer

A Senior Nuclear Criticality Safety Engineer at Oklo is responsible for performing criticality safety evaluations, developing the nuclear criticality safety basis, and architecting the nuclear criticality safety program for a first-of-a-kind used nuclear fuel recycling facility.

Responsibilities

Performing criticality safety evaluations, developing the nuclear criticality safety basis, and architecting the nuclear criticality safety program for a first-of-a-kind used nuclear fuel recycling facility; Identifying and evaluating nuclear criticality safety (NCS) hazards for fuel cycle facilities; Performing criticality safety evaluations (CSEs) to demonstrate subcriticality under normal and credible abnormal conditions; Developing the criticality code validation report; Demonstrating compliance with the double-contingency principle; Documenting criticality hazard analyses, CSEs, and supporting technical information; Evaluating and implementing controlled parameters for the NCS program; Developing the criticality accident alarm system and inadvertent criticality emergency response plan; Supporting safety basis development and licensing efforts; Developing and administering the NCS program, methodologies, and management measures

Requirements

Bachelors, Masters, or PhD in nuclear engineering, chemical engineering, or chemistry, or related field; Minimum 5+ years experience performing CSEs as a part of a nuclear facility’s safety basis; Knowledge of nuclear science, physics of criticality, and chemistry; Knowledge of nuclear fuel cycle processes and nuclear fuel cycle facility accident scenarios; Proficient with Attila4MC, MCNP, SCALE, and/or Serpent codes and modules; Familiarity with critical experiments and their purpose; Knowledge of criticality-specific codes, standards, regulatory requirements, and industry practices for nuclear fuel cycle facilities; Familiarity with NUREG-1513, NUREG-1520, NUREG/CR-6410, NUREG/CR-6698, NUREG/CR-7311, and NRC RG 3.71; Passionate about clean energy and making advanced fission a reality; Knowledgeable about structural design, analysis, and construction; Eager to work on a dynamic team, receive constructive feedback, and grow with us; Willing to think differently and learn quickly; Comfortable in a fast-paced, highly iterative startup environment; Excited to think creatively, critically, and reflectively about the problems they are solving, while not leaning only on what has been done before; An excellent writer who can communicate technical concepts in modern active voice

Nice to have

Knowledge of used nuclear fuel recycling technologies; 10+ years of experience performing criticality safety evaluations for an NRC licensed fuel cycle facility

Benefits

Flexible time off; Equity; Competitive pay; 401k; Health insurance; FSA; Flexible work hours; Other benefits