Lawrence Livermore National Laboratory

Nuclear Criticality Safety Engineer

Location:  Livermore, CA
Category:  Technical Services & Ops
Organization:  Nuclear Operations
Posting Requirement:  External w/ US Citizenship
Job ID: 105985
Job Code: Technical Services & Ops MTS 2 (TSS.2) / Technical Services & Ops MTS 3 (TSS.3)
Date Posted: August 20 2019

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Science and Technology on a Mission!

For more than 60 years, the Lawrence Livermore National Laboratory (LLNL) has applied science and technology to make the world a safer place.

We have an opening for a Criticality Safety Engineer to provide support for LLNL operations with fissionable materials.  You will contribute to tasks assigned to LLNL supporting the DOE Nuclear Criticality Safety Program (NCSP).  This position is in the Nuclear Criticality Safety Program.

Essential Duties
- Perform criticality safety evaluations in conformance with DOE-STD-3007 and LLNL administrative procedures and participate in design reviews of new or proposed changes to existing equipment or operating procedures.
- Perform walkthrough inspections and basic annual reviews of operational safety plans and work authorization/work control documents and review safety procedures and documents for consistency with criticality safety evaluations and adequate implementation of criticality safety controls.
- Provide customers with interpretation and implementation of DOE regulations, national consensus standards and Laboratory policies related to criticality safety.
- Perform technical/scientific assignments of moderate to complex problems that require independent analysis and creativity, and provide technical support to facility management, engineers and scientists in scientific research and development projects and/or ongoing operations.
- Gather and analyze data and information in support of the work activity and deliver results in the form of documents, calculations, recommendations, corrective actions, or designs.
- Develop creative solutions to issues/problems.
- Travel frequently to the Nevada National Security Site.
- Deliver Fundamentals of Criticality Safety training courses.
- Perform other duties as assigned.
In Addition at the TSS.3 Level
- Prepare technical reports and present formal presentations to LLNL management and various internal and external audiences.
- Conduct formal on-the-job training, informal presentations, and consultations of criticality safety information to fissile material handlers, designers, and other clients.
- Interpret, implement, and provide guidance to customers on DOE regulations, national consensus criticality safety standards and Laboratory policies related to criticality safety.
- Bachelor’s Degree in Nuclear Engineering, Physics, or closely related scientific discipline or the equivalent combination of education and related experience.
- Comprehensive knowledge of and experience working in a nuclear facility, nuclear reactor, chemical, high hazard, (e.g., explosive), radiological operations, or similarly complex or highly regulated facility.
- Broad application of technical, analytical and decision-making skills and record of achievement in performing criticality safety evaluations or research.
- Proficient with personal computers and radiation transport software (e.g., COG, MCNP, or SCALE).
- Experience preparing technical documents following appropriate protocols (e.g., criticality safety evaluations, safety basis calculations, design calculations, and drawings/sketches).
- Working knowledge of DOE orders, national consensus standards, and engineering practices.
- Proficient verbal and written communication and interpersonal skills necessary to work effectively in a collaborative work environment.
- Ability to document, present and/or explain technical or operational information and work results to management and stakeholders, i.e., DOE, DNFSB, and other external agencies.
In Addition at the TSS.3 Level
- Significant experience with nuclear and fissile material operations.
- Significant experience conducting safety evaluations in conformance with applicable DOE orders.

Desired Qualifications
- Masters or Doctorate in Nuclear Engineering, Physics, or closely related discipline.
- Experience in criticality safety and knowledge of LLNL’s policies, procedures, and practices.

Pre-Employment Drug Test:  External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test.  This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Security Clearance:  This position requires a Department of Energy (DOE) Q-level clearance.

If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship.  If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.

Note:   This is a Career Indefinite position. Lab employees and external candidates may be considered for this position.

About Us

Lawrence Livermore National Laboratory (LLNL), located in the San Francisco Bay Area (East Bay), is a premier applied science laboratory that is part of the National Nuclear Security Administration (NNSA) within the Department of Energy (DOE).  LLNL's mission is strengthening national security by developing and applying cutting-edge science, technology, and engineering that respond with vision, quality, integrity, and technical excellence to scientific issues of national importance.  The Laboratory has a current annual budget of about $2.1 billion, employing approximately 6,800 employees.


LLNL is an affirmative action/ equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, protected veteran status, age, citizenship, or any other characteristic protected by law.