Share this Job

Senior Technician - Cold Source Staff Member

Date: Nov 22, 2022

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 9569 


We are seeking a Cold Source Staff Member who will focus on operation of the cold source facility.  This position resides in the Cold Source Operations Group within the High Flux Isotope Reactor (HFIR) Operations Section, Research Reactors Division, Neutron Sciences Directorate at Oak Ridge National Laboratory (ORNL).  


Major Duties/Responsibilities are: 

  • Operations:
    • Operate Cold Source cryogenic and support systems to support HFIR operations and neutron science missions
    • Conducts shift operations in accordance with plant procedures, HFIR Technical Safety Requirements, and Cold Source Safety Authorization Basis
    • Serves as the single point of contact for authorizing, directing, and monitoring Cold Source activities
    • Performs actions necessary to mitigate the consequences of Cold Source transients
    • Works 12-hour rotating shift work during operating cycles
    • Safely perform hydrogen addition and venting operations and take proper actions in the event of an incident
    • Serves as Qualified Person for Lockout/Tagout(Lock/Tag/Verify) process per ADM-0200 to hang and clear equipment lockouts
  • Work Control:
    • Authorizes start of work affecting Cold Source equipment and systems
    • Authorizes the removal of equipment to service following maintenance, testing or operational actives
    • Authorizes the return of equipment to service following maintenance, testing or operational actives
    • Acts as Issuing Authority in the Lockout/Tagout (Lock/Tag/Verify) process per ADM-0200 when designated by the CSOL
  • Administrative:
    • Write Technical Safety Requirement Tacking documents for approval
    • Ensures plant operational deficiencies are identified and corrective action is initiated
    • Reviews Cold Source plant operating and emergency response procedures
    • Provides feedback to operating, emergency, and administrative procedures
    • Perform quarterly/annual audits for various operations procedures/programs
    • Order operational supplies and equipment
  • Maintenance Support:
    • Acquires and maintains Task Leader qualification, including writing maintenance work packages
    • Review and approve Maintenance Work Packages
    • Produce and review Lockout/Tagout per ADM-0200
    • Establish system conditions for maintenance and testing
    • Perform system and component testing to validate maintenance actions
    • Perform or assist in troubleshooting of systems/components
  • Safety:
    • Serves as Emergency Response Team member during evacuations
    • Maintains control of hydrogen control areas and personnel access for Cold Source Areas per ADM-0604
    • Exercises “Stop Work” authority within the Cold Source facility for practices that could jeopardize safety
    • Ensures compliance with environmental, safety, health, and quality program directives
    • Ensures Cold Source activities are conducted in accordance with appropriate tagging, safety, configuration control practices and Conduct of Operations per ADM-0001
    • Ensures applicable environmental, safety, and health directives are complied with for all Cold Source operation activities.
    • Handle cryogenic and explosive fluids per safety requirements and provide guidance as necessary
  • Professionalism:
    • Maintains a strong commitment to the implementation and perpetuation of professional values and ethics


Basic Qualifications:

  • Associates degree in an engineering or science discipline and a minimum of 7 years of relevant experience. A high school diploma may be considered with a minimum of 9 years of relevant experience.
  • At least 2 years of experience in nuclear plant operations.
  • Familiarity with DOE Order 422.1, Conduct of Operations.


Preferred Qualifications:

  • Current or previous certification as a Nuclear Reactor Controller at the HFIR.
  • Ability to interpret complex mechanical, electrical, and electronic system drawings.
  • Experience with vacuum systems, cryogenic systems, and hydrogen systems.
  • Excellent written and oral communication skills.
  • Motivated self-starter with the ability to work independently and as a part of the team. 


About Neutron Sciences Directorate:
The Neutron Sciences Directorate (NScD) at Oak Ridge National Laboratory (ORNL) operates the High Flux Isotope Reactor (HFIR), the United States’ highest flux reactor-based neutron source, and the Spallation Neutron Source (SNS), the world’s most intense pulsed accelerator-based neutron source.  Together these facilities operate 30 instruments for neutron scattering research, each year carrying out in excess of 1,000 experiments in the physical, chemical, materials, biological and medical sciences for more than 3,000 visiting scientists.  HFIR also provides unique facilities for isotope production and neutron irradiation.  To learn more about Neutron Sciences at ORNL go to


Special Requirements:


Physical Requirements: Work involves various physical requirements and working conditions. As such, a pre-hire physical will be required after offer.


This position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program.




This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

If you have trouble applying for a position, please email

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply.  UT-Battelle is an E-Verify employer.

Nearest Major Market: Knoxville