Nuclear Safety Analyst Intern - Summer 2026

AtkinsRéalis

1d•$25 - $31

About The Position

AtkinsRéalis is seeking a Nuclear Safety Analyst intern to join our Isotek Systems, LLC U-233 Disposition Project in Oak Ridge, Tennessee office. YOUR ROLE Reviews drafts of Work Packages, Task Orders, procedures, facility modifications, and other documents for integration of nuclear safety into facility activities. Participates in critiques/investigations involving nuclear safety issues, as requested. Participates in Hazards Identification and Analyses activities, as requested. Assists in revisions of the Criticality Accident Alarm System Needs Analysis, as requested. Performs nuclear safety implementation walkdowns and surveillances of fissile material operations, as requested. Reviews operational procedures and other project documents to ensure compliance with nuclear safety requirements. Assists in the preparation of Fissile Material Operation Screening documents, as requested. Assists in the preparation and peer review of nuclear safety calculations (e.g., dispersion analyses, radiation exposure calculations), as requested. At AtkinsRéalis, our values—Safety, Integrity, Collaboration, Innovation, and Excellence—are more than just words. They are the foundation of who we are and how we work. These principles shape our culture, guide our decisions, and inspire us to create an environment where every team member feels empowered to grow, succeed, and make a meaningful impact. As an Intern, you will participate in Explore, our intern development initiative, and will enjoy a host of benefits including: Competitive salary Hands-on experience with industry leaders Support and mentorship from various professionals throughout the business Career and educational exploration opportunities such as Client Site Visits, Weekly Lunch & Learns, & various virtual and/or in-person activities As an entry-level Full-Time employee, you will enjoy a robust rewards package including enrollment into Emerge, our new graduate experience, providing: Opportunities to work on various projects of ranging size and scope Support & structured mentorship from various professionals throughout the global AtkinsRéalis network Formal business and soft-skills training on topics such as time management, resilience, emotional intelligence, feedback, and communication Integration into a robust Emerging Professional Network Additional learning and development programs, training, career opportunities and a highly regarded tuition reimbursement program Additional benefits may include medical, dental, vision, company-paid life and short- and long-term disability benefits, employer-matched 401(k) with 100% vesting, employee stock purchase plan, Paid Time Off, leaves of absences options, flexible work options, recognition and employee satisfaction programs, employee assistance program, and voluntary benefits. We're AtkinsRéalis, a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people. Find out more. AtkinsRéalis is an equal opportunity, Drug-Free employer. EOE/Veteran/Disability AtkinsRéalis cares about your privacy and is committed to protecting your privacy. Please consult our Privacy Notice on our Careers site to know more about how we collect, use and transfer your Personal Data. By submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice. Note to staffing and direct hire agencies: In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency. At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences. Created by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-class engineering services and nuclear company dedicated to engineering a better future for our planet and its people. We create sustainable solutions that connect people, data and technology to transform the world's infrastructure and energy systems. We deploy global capabilities locally to our clients and deliver unique end-to-end services across the whole life cycle of an asset including consulting, advisory & environmental services, intelligent networks & cybersecurity, design & engineering, procurement, project & construction management, operations & maintenance, decommissioning and capital. The breadth and depth of our capabilities are delivered to clients in strategic sectors such as Engineering Services, Nuclear and Capital.

Requirements

Acceptance into a Bachelor’s degree program in mechanical, chemical, or nuclear engineering.
Must have completed a minimum of 24 hours toward a degree from an ABET accredited program by start of internship (Summer 2026).
Proficient knowledge of Microsoft Office.
Strong communication, verbal and written skills.
Must be a US citizen (Real ID compliant identification) and able to obtain a DOE “L” Security Clearance.

Nice To Haves

Familiarity with nuclear safety software codes (e.g., MCNP, SCALE, HotSpot, MicroShield) preferred.

Responsibilities

Reviews drafts of Work Packages, Task Orders, procedures, facility modifications, and other documents for integration of nuclear safety into facility activities.
Participates in critiques/investigations involving nuclear safety issues, as requested.
Participates in Hazards Identification and Analyses activities, as requested.
Assists in revisions of the Criticality Accident Alarm System Needs Analysis, as requested.
Performs nuclear safety implementation walkdowns and surveillances of fissile material operations, as requested.
Reviews operational procedures and other project documents to ensure compliance with nuclear safety requirements.
Assists in the preparation of Fissile Material Operation Screening documents, as requested.
Assists in the preparation and peer review of nuclear safety calculations (e.g., dispersion analyses, radiation exposure calculations), as requested.

Benefits

Competitive salary
Hands-on experience with industry leaders
Support and mentorship from various professionals throughout the business
Career and educational exploration opportunities such as Client Site Visits, Weekly Lunch & Learns, & various virtual and/or in-person activities
Opportunities to work on various projects of ranging size and scope
Support & structured mentorship from various professionals throughout the global AtkinsRéalis network
Formal business and soft-skills training on topics such as time management, resilience, emotional intelligence, feedback, and communication
Integration into a robust Emerging Professional Network
Additional learning and development programs, training, career opportunities and a highly regarded tuition reimbursement program
Additional benefits may include medical, dental, vision, company-paid life and short- and long-term disability benefits, employer-matched 401(k) with 100% vesting, employee stock purchase plan, Paid Time Off, leaves of absences options, flexible work options, recognition and employee satisfaction programs, employee assistance program, and voluntary benefits.