Pacific Northwest National Laboratory Jobs

Job Information

Pacific Northwest National Laboratory Nuclear Criticality Safety Engineer in RICHLAND, Washington

Organization and Job ID

Job ID: 310354

Directorate: Operational Systems Directorate (OSD)

Division: Campus Development & Nuclear Operations

Group: Nuclear & Criticality Safety

Job Description

  • Designs, develops, and analyzes components utilized in nuclear applications and nuclear non-proliferation such as reactor fuel, reactor cores, radiation shielding, and instrumentation.

  • Researches and develops analytical methods and technologies supporting all aspects of the nuclear fuel cycle including R&D activities related to storage, transportation, and disposal of used nuclear fuel and high-level radioactive waste and long-term performance of waste forms.

  • Supports nuclear regulatory work, risk-informed nuclear regulatory analysis, and probabilistic risk analysis. Addresses facility and process safety needs, principally in the area of nuclear-related construction, operation, and decommissioning.

  • Development and application of radioactive materials, radioactive isotopes, and radiation generating devices. Studies the effects of interactions of radiation with materials including biological effects. Researches, evaluates, and controls health hazards to permit the safe use of ionizing radiation. Investigates principles by which radiation interacts with matter and living systems.

  • Studies environmental levels of radioactivity and the effects of radiation on biological systems on earth and in space. Applies knowledge of radiation physics, health physics, biology, instrumentation, and computational modeling in laboratory and field settings to ensure that radiation exposure to researchers, students, industrial workers, patients, and the public is minimized and in compliance with regulations.

Additional discipline, principal job duties/expectations, and qualitative and quantitative measures of performance:

  • Develop nuclear criticality safety evaluations and program documents that meet applicable PNNL and DOE requirements and standards, utilizing nuclear criticality safety software (SCALE and MCNP) as needed under the guidance of a senior Criticality Safety Engineer.

  • Perform nuclear criticality safety reviews of existing and proposed facility designs and modifications; and research or processing activities involving fissionable materials under the guidance of a senior Criticality Safety Engineer.

  • Participate in the preparation and approval of Criticality Safety Specifications and associated Temporary Variances under the guidance of a senior Criticality Safety Engineer.

  • Support of Nuclear Criticality Safety Program implementation and training.

  • Performs hazards analysis, accident analysis, derives hazard controls, and documents the results in a nuclear facility safety basis (i.e., documented safety analysis and technical safety requirements).

Minimum Qualifications

  • BS/BA with 5 years of experience, MS/MA with 3 years of experience or PhD with 1 years of experience

Preferred Qualifications

  • Professional license and/or certification.

Equal Employment Opportunity

Battelle Memorial Institute (BMI) at Pacific Northwest National Laboratory (PNNL) is an Affirmative Action/Equal Opportunity Employer and supports diversity in the workplace. All employment decisions are made without regard to race, color, religion, sex, national origin, age, disability, veteran status, marital or family status, sexual orientation, gender identity, or genetic information. All BMI staff must be able to demonstrate the legal right to work in the United States. BMI is an E-Verify employer. Learn more at

Other Information

This position requires the ability to obtain and maintain a federal security clearance.


  • U.S. Citizenship

  • Background Investigation: Applicants selected will be subject to a Federal background investigation and must meet eligibility requirements for access to classified matter in accordance 10 CFR 710, Appendix B.

  • Drug Testing: All Security Clearance (L or Q) positions will be considered by the Department of Energy to be Testing Designated Positions which means that they are subject to applicant, random, and for cause drug testing. In addition, applicants must be able to demonstrate non-use of illegal drugs, including marijuana, for the 12 consecutive months preceding completion of the requisite Questionnaire for National Security Positions (QNSP).

Note: Applicants will be considered ineligible for security clearance processing by the U.S. Department of Energy until non-use of illegal drugs, including marijuana, for 12 consecutive months can be demonstrated.

Other Information

Special/Hazardous Working Conditions or Environment:

  • Work at 325 Radiochemical Processing Laboratory, a hazard category 2, DOE-owned non-reactor nuclear facility.

  • Potential exposure to low levels of ionizing radiation and standard industrial hazards.

Directorate: Operational Systems

Job Category: Engineering/Engineering Techs

Group: Nuclear & Criticality Safety

Opening Date: 2020-01-24

Closing Date: 2020-02-23