ATR Systems Mechanic - 1st Class

The Advanced Test Reactor (ATR) at Idaho National Laboratory is one of the most unique and consequential facilities in the world. As the nation's most powerful research reactor, ATR drives breakthroughs in nuclear fuel development, materials science, and national security‑work that directly shapes America's energy independence and defense capability.

The systems that keep ATR operating do not maintain themselves. That is where you come in. As a Systems Mechanic, you are not just keeping equipment running; you are keeping the mission running. Your hands‑on expertise supports research that influences U.S. energy policy, nuclear deterrence, and the future of clean power. This is skilled trades work with national significance.

You will perform a broad range of mechanical maintenance activities throughout the ATR Complex, working on systems that demand precision, experience, and a thorough understanding of industrial equipment.

• Perform corrective and preventive maintenance on industrial mechanical systems throughout the ATR Complex.
• Maintain and repair small motors and the mechanical operations of airflow valves and controllers.
• Maintain diesel fire pumps, including fluid changes, belt replacements, and major component repairs.
• Maintain overhead cranes and a variety of pumps and compressors.
• Utilize thermal sensing and vibration analysis equipment.
• Read and interpret technical drawings, schematics, and system prints to guide maintenance and repair work.
• Participate in work planning, material identification, man‑hour estimating, and procurement coordination.
• Perform leadman functions as required, including directing work, coordinating crews, and maintaining job‑site standards.
• Provide on‑the‑job training and mentorship to developing craftsmen.
• Actively participate in company safety programs, including VPP, ALARA, and EST.
• Complete the ATR Mechanic Qualification Card and all other required training.
• Perform other duties as assigned by management.

• Knowledge of basic mechanical and operational theory.
• Knowledge of tools, equipment, and electrical hazards associated with the mechanical trade.
• Knowledge of material incompatibility, suspect materials, and fasteners.
• Knowledge of work control requirements.
• Knowledge of general safety and personal protective equipment requirements.
• Knowledge of and compliance with Industrial Safety Requirements. NFPA, 70E, Part III, First Aid/CPR, Lockout/Tagout, Portable Ladders, Electrical Energy Awareness, PPE, Safe Work Permit, Working in Hazardous Temperatures Hot/Cold.
• Knowledge of hazardous material supplies and disposal of waste streams.
• Ability to read and interpret drawings, schematics, and other technical documents.
• Ability to use the tools of the trade (drill press, hand tools, bench grinder, metal lathe, mag‑bas drill, metal break, sheet metal nibbler, deburring and belt sander, laser alignment tools, precision instruments, power saws (band, reciprocating, jig, chop)).
• Ability to troubleshoot and install mechanical systems.
• Ability to troubleshoot, repair, and maintain mechanical systems and components.
• Ability to work extended periods of time in radiological work areas including the required PPE (respiratory protection, etc.).

• High School diploma or equivalent with 5 years applicable experience, a two‑year vocational training plus three years applicable experience, or completion of a recognized trade apprenticeship and 2 years of applicable experience.
• Demonstrated senior‑level proficiency across a broad range of mechanical systems.
• Hands‑on experience with small motor repair, diesel‑driven equipment, and facility mechanical systems.
• Proficiency with a full range of shop fabrication tools and equipment.
• Ability to read and interpret drawings, schematics, and technical documentation.
• Working knowledge of Lockout/Tagout (LOTO), PPE requirements, and industrial safety standards, including NFPA 70E and First Aid/CPR.
• Journeyman license may be required depending on scope of work.
• Ability to obtain Radiological Worker Qualification within 45 days of hire.
• Valid state driver's license.
• This position…