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Criticality Safety Engineer

Aalo· Nuclear Operations
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Idaho Falls, IDFull-timePosted 5d ago

About the role

Criticality Safety Engineer to perform criticality safety evaluations, develop and maintain controls, and serve as the Criticality Safety Officer for assigned facilities at the Aalo-X campus, ensuring DOE and ANSI/ANS-8 compliance.

Responsibilities

  • Perform criticality safety evaluations (CSEs) independently in accordance with DOE-STD-3007, including scoping calculations for design, technical guidance, and formal safety basis analyses.
  • Check and verify criticality safety evaluations for accuracy, including independent calculations and analyses.
  • Perform criticality safety reviews and assessments of existing facilities and planned activities, including modifications and process changes.
  • Review safety basis documents, proposed safety basis documents, and facility/process modifications for criticality safety implications.
  • Oversee and support the implementation of the Aalo Atomics Criticality Safety Program requirements, limits, and controls across assigned facilities.
  • Serve as the Criticality Safety Officer for assigned Criticality Control Areas, acting as liaison between facility management and Criticality Safety Engineering.
  • Perform regular facility walkdowns and surveillances to verify compliance with criticality safety controls.
  • Advise operating personnel on conformance to criticality safety limits and identify when CS engineering consultation is needed.
  • Authorize the implementation of new or modified equipment and activities within assigned Criticality Control Areas with active CSEs and safety basis.
  • Develop and approve facility-specific criticality safety controls and participate in reviews.
  • Provide guidance on violations and areas of concern related to criticality safety.
  • Support development and maintenance of criticality safety documentation (program plan, procedures, training materials).
  • Coordinate with nuclear safety, design engineering, and operations to integrate criticality safety into design and procedures.
  • Support development of recovery plans and emergency response procedures for criticality safety events.
  • Perform or support USQ evaluations for changes with potential criticality safety implications.

Qualifications

  • Bachelor of Science degree in Nuclear Engineering, Nuclear Physics, Physics, or closely related field.
  • 8+ years of experience in nuclear criticality safety, including independent preparation and review of CSEs at DOE facilities.
  • Proficiency with Monte Carlo neutron transport codes (MCNP, SCALE, OpenMC, Serpent).
  • Strong working knowledge of DOE criticality safety requirements (10 CFR 830, DOE Order 420.1 Chapter III, DOE-STD-3007).
  • Familiarity with ANSI/ANS-8 series standards for nuclear criticality safety.
  • Experience reviewing safety basis documents for criticality safety adequacy.
  • Ability to perform independent criticality safety assessments of facilities, processes, and modifications.
  • Strong technical writing and communication skills.
  • Interpersonal skills to communicate requirements to operations, design, and management; knowledge of ANSI/ANS-8.26 training and qualification requirements.

Skills

Required:Criticality safety evaluations (CSEs)DOE-STD-3007Monte Carlo neutron transport codesANSI/ANS-8.26 training requirements

Benefits

  • Competitive salary based on experience
  • Health, Dental, Vision Insurance
  • Paid Time Off
  • Corporate Gym Membership
Last updated Oct 22, 2026. Interested? Apply on the company site.

About Aalo

Welcome to the dawn of a Second Atomic Age

Creating abundant and dependable clean energy to power humanity for generations.

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