DOE-STD-1183-2026, Nuclear Safety Specialist Functional Area Qualification Standard

NOT MEASUREMENT SENSITIVE DOE-STD-1183-2026 February 2026 DOE STANDARD NUCLEAR SAFETY SPECIALIST FUNCTIONAL AREA QUALIFICATION STANDARD DOE Defense Nuclear Facilities Technical Personnel U.S. Department of Energy AREA TRNG Washington, D.C. 20585 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited DOE-STD-1183-2026 ii This document is available on the FTCP SharePoint site at https://ntc.doe.gov/sites/tqp/tqpportal/SitePages/Home.aspx https://ntc.doe.gov/sites/tqp/tqpportal/SitePages/Home.aspx DOE-STD-1183-2026 iii APPROVAL The Federal Technical Capability Program (FTCP) Panel consists of senior U.S. Department of Energy (DOE) managers responsible for overseeing the Federal Technical Capabilities Program. This panel is responsible for reviewing and approving the qualification standard for Department-wide application. Approval of this qualification standard from the Federal Technical Capabilities Panel is indicated by signature below. Digitally signed by RICHARD RICHARD DENNING DENNING Date: 2026.02.24 15:55:02 -07'00' Richard Denning, Vice Chairperson Date Federal Technical Capabilities Panel DOE-STD-1183-2026 iv TABLE OF CONTENTS APPROVAL ............................................................................................................................... iii ACKNOWLEDGMENT ............................................................................................................... vi PURPOSE ................................................................................................................................. 1 APPLICABILITY ......................................................................................................................... 1 IMPLEMENTATION ................................................................................................................... 1 EVALUATION REQUIREMENTS............................................................................................... 3 INITIAL QUALIFICATION AND TRAINING ................................................................................ 3 DUTIES AND RESPONSIBILITIES ............................................................................................ 3 BACKGROUND AND EXPERIENCE ......................................................................................... 4 REQUIRED PERFORMANCE COMPETENCIES ...................................................................... 4 APPENDIX A – Initial and Continuing Training Recommendations .......................................... 21 APPENDIX B – NSS Organization Specific Performance Activities Recommendations ........... 23 DOE-STD-1183-2026 v ACKNOWLEDGMENT The Office of Enterprise Assessments, National Training Center (EA-50), in support of the FTCP Panel, facilitated the development of the revision of this Nuclear Safety Specialist (NSS) Functional Area Qualification Standard (FAQS). The following subject-matter experts participated in the maintenance of this FAQS: Name Office Brian Clifton (FTCP Agent Champion) Nevada Field Office Nathan Felosi EHSS Imelda “Mellie” Cunningham NPO Katie Murphy Idaho Field Office Ivan Trujillo NA-ESH-21 Ian Spivack EHSS Andrea Jones YFO Johnnie Nevarez EA-50, National Training Center Melissa A. Otero EA-50, National Training Center DOE-STD-1183-2026 1 U.S. DEPARTMENT OF ENERGY FUNCTIONAL AREA QUALIFICATION STANDARD NUCLEAR SAFETY SPECIALISTS PURPOSE

The primary purpose of the Technical Qualification Program (TQP) is to ensure employees have the requisite knowledge, skills, and abilities to support the mission of the Department. The TQP forms the basis for the development and assignment of DOE personnel responsible for ensuring the safe operation of defense nuclear facilities. The technical qualification standards are not intended to replace the U.S. Office of Personnel Management (OPM) qualifications standards or other departmental personnel standards, rules, plans, or processes. However, the technical qualification standards should form the primary basis for developing vacancy announcements, qualification requirements, crediting plans, interview questions, and other criteria associated with the recruitment, selection, and internal placement of technical personnel. APPLICABILITY The Nuclear Safety Specialist (NSS) Functional Area Qualification Standard (FAQS) establishes common performance competencies for all DOE NSS personnel who provide assistance, direction, guidance, oversight, or evaluation of contractor technical activities that could impact the safe operation of DOE’s defense nuclear facilities. This FAQS has been developed as a tool to assist DOE Program and Field Offices in the development and implementation of the TQP in their organization. To make qualification transportability between DOE elements easier, program and field offices must use this FAQS without modification or addition to performance competency knowledge requirements. Satisfactory and documented attainment of the performance competencies contained in this FAQS ensures personnel possess the minimum requisite knowledge and skills to fulfill functional area duties and responsibilities common to the DOE complex. Additionally, required organization-specific qualification standards, handled separately, supplement this FAQS and establish unique performance competencies at the organization level (headquarters, field element, site, or facility). IMPLEMENTATION This FAQS is composed of performance competencies based on task performance. The Nuclear Safety Specialist Functional Area Job Task Analysis identified tasks that were grouped into performance competencies in this FAQS. Each performance competency includes knowledge requirements and any mandatory performance activities (MPA) that need to be completed to demonstrate the performance competency has been met. The DOE National Training Center (NTC) developed evaluation DOE-STD-1183-2026 2 guides to support attainment of the performance competencies in this FAQS. These evaluation guides provide the expected level of knowledge for each knowledge requirement and are available for personnel assigned this FAQS and qualifying officials responsible for verifying the attainment of performance competency knowledge requirements. The evaluation guides for this FAQS are available through the NTC TQP support site at: https://ntc.doe.gov/sites/tqp/tqpportal/SitePages/Home.aspx. Appendix B, NSS Organization Specific Performance Activity Recommendations, lists performance activities (PAs) that are not routinely performed by NSS personnel across most DOE sites or are not commonly expected to be performed by NSS personnel during initial qualification. If a supervisor determines that any of the activities in this appendix are needed for an NSS within their organization, the applicable PA from Appendix B should be considered for inclusion in the organization specific qualification standard. Use of Appendix B is optional and not required.

Additionally, if NSSs have organization-specific oversight responsibilities in areas not addressed in this FAQS, any knowledge requirements and performance activities related to these responsibilities should be included in the job-specific qualification standards. Headquarters and field elements shall establish a program and process to ensure DOE personnel possess the needed knowledge and skills to meet the performance competencies identified in this FAQS. Documentation of the completion of the requirements in this FAQS must be included in the employee’s training and qualification records. Satisfactory attainment of performance competencies contained in this FAQS should be documented using the NSS FAQS qualification card in the Electronic Technical Qualification Program at https://etqp.ntc.doe.gov. Equivalencies should be used with the utmost rigor and scrutiny to maintain the spirit and intent of the TQP. Equivalencies may be granted for individual performance competencies or knowledge requirements and/or MPAs based on objective evidence of previous experience. Objective evidence includes a combination of transcripts, certifications, and (in some cases) a knowledge sampling obtained through written and/or oral examinations. Equivalencies must be granted in accordance with the TQP plan of the specific organization qualifying the individual. Knowledge requirements and any MPAs should be met before granting an equivalency for the related performance competency. The MPAs listed in this FAQS are required to be satisfactorily performed only once. If, during a performance of the MPA, any of the evaluation criteria are not satisfactorily met, the qualifying official may require the participant to perform the MPA again. In these cases, satisfactory completion of the MPA only needs to be documented once. The intent is for NSS participants to perform the MPAs as written in their assigned organization. However, in cases where the MPAs cannot be performed exactly as written in the NSS’s assigned organization within the required qualification timeframe, supervisors may use other options to complete the MPA requirements. This could include performance of the MPA in a simulated environment or performance of the activity using exercise materials. There also may be situations where minor modifications to the MPA or MPA evaluation criteria may be needed to fit organization specific conditions. The reason for any changes in the MPA or MPA https://ntc.doe.gov/sites/tqp/tqpportal/SitePages/Home.aspx https://etqp.ntc.doe.gov/ https://etqp.ntc.doe.gov/ DOE-STD-1183-2026 3 evaluation criteria or changes in the method of performance (e.g. simulation or use of exercise materials) must be documented by the designated qualification official (QO) with approval of the supervisor and local FTCP agent. Training must be provided to employees in the TQP who do not meet the performance competencies contained in this FAQS. Training may include, but is not limited to, formal classroom and computer-based courses, self-study, mentoring, on-the-job training, and special assignments. Departmental training must be based on the knowledge requirements and specific job tasks related to each performance competency statement. Headquarters and field elements should use the performance competency knowledge requirements as a basis for evaluating the content of any training. EVALUATION REQUIREMENTS

Attainment of performance competency knowledge requirements and MPAs listed in this FAQS must be documented in accordance with the TQP plan or policy of the organization qualifying the individual and the requirements in DOE O 360.1, Federal Employee Training, and DOE O 426.1, Department of Energy Federal Technical Capabilities. Supervisory verification of attainment of all performance competency knowledge requirements and MPAs, in accordance with the TQP plan or policy of the organization, satisfies the final qualification requirements for this FAQS. INITIAL QUALIFICATION AND TRAINING Qualification of nuclear safety specialist personnel must be conducted in accordance with the requirements of DOE O 426.1. The DOE NTC has developed a comprehensive safety basis training curriculum to support the initial training of personnel in this FAQS. This curriculum directly aligns with the information provided in the evaluation guides for this FAQS and provides a standardized method for personnel to attain the knowledge requirements for each performance competency. Personnel attending the NTC instructor-led safety basis review courses will be given the opportunity to practice the MPAs identified in this FAQS using a virtual nuclear facility with associated safety basis documents. A description of suggested learning activities and the requirements for the continuing education and training program for this FAQS are included in Appendix A. DUTIES AND RESPONSIBILITIES The following are typical duties and responsibilities expected of personnel assigned to the nuclear safety specialist functional area: • Safety basis document review • Oversight and assessment of contractor activities DOE-STD-1183-2026 4 • Technical support Position-specific duties and responsibilities for nuclear safety specialist personnel are contained in office, site, or facility-specific qualification standards and/or position descriptions. This FAQS addresses the performance competencies for safety basis document review tasks. The tasks associated with the safety basis document review duty area are listed in Appendix B. Oversight and assessment of contractor activities is a duty area covered in Part B, Oversight Performance, of DOE-STD-1146-2026, General Technical Base Qualification Standard. Technical support duties are dependent on the level of subject-matter expertise of the individual and the needs of the organization and will not be addressed by any performance competencies in this FAQS. BACKGROUND AND EXPERIENCE The OPM Qualification Standards Operating Manual establishes minimum education, training, experience, or other relevant requirements applicable to a particular occupational series/grade level, as well as alternatives to meeting specified requirements. Professional certification or engineer certification must only be referenced in an FAQS when consistent with, and required by, a particular OPM occupational series/grade level. The knowledge requirements and associated MPAs identified in the FAQS were developed based on participants having the preferred education and experience levels identified below. Personnel assigned to complete this FAQS who do not meet these requirements may need additional developmental assignments and supporting training to satisfactorily complete this FAQS. The preferred education and experience for nuclear safety specialist (NSS) personnel are: 1. Education

A bachelor of science degree in engineering or physics or a science-related degree and meeting OPM’s hiring requirements for this role. Other series may be appropriate. OR 2. Experience Industrial, military, Federal, state, or other directly-related background that has provided specialized experience in nuclear safety. Specialized experience can be demonstrated through possession of the knowledge requirements and performance of tasks outlined in this standard. REQUIRED PERFORMANCE COMPETENCIES The performance competencies contained in this standard include knowledge requirements that are distinct from knowledge requirements contained in the General Technical Base (GTB) Part A and B Qualification Standard (QS). All NSS personnel must satisfy the knowledge DOE-STD-1183-2026 5 requirements of the GTB Part A QS and the knowledge requirements and MPAs in the GTB Part B QS prior to, or in parallel with, obtaining the knowledge requirements for the performance competencies contained in this FAQS. Each performance competency defines the expected level of knowledge and performance an individual must possess to meet the intent of this standard. Each performance competency is further described by knowledge requirements and, if necessary, mandatory performance activities that describe the task(s) that must be demonstrated to meet the intent of the related performance competency. Note 1: For activities that require evaluation of a documented safety analysis (DSA)/technical safety requirement (TSR) revision, the qualifying official (QO) determines whether the scope of the revision is adequate to satisfy the requirements and intent of the performance activity. Some safety basis revisions may lack the scope to be appropriate for meeting the requirements of this FAQS. An NSS qualifying using this FAQS is expected to get the concurrence of the QO prior to using a limited-scope safety basis revision to meet an MPA in this FAQS. Note 2: Qualifying officials are encouraged to use DOE-HDBK-1224-2024, Hazard and Accident Analysis Handbook, as appropriate, when evaluating the trainee’s knowledge of applicable requirements in this FAQS. DOE-STD-1027-2018 Chg. Notice 1 (CN 1) Hazard Categorization of DOE Nuclear Facilities was approved but its use is optional. Since DOE-STD-1027-92 CN 1 is referenced in 10 CFR 830 subpart B, and invoked by DOE O 420.1C, Chg. 2, Facility Safety, and related knowledge requirements in this FAQS still refer to DOE-STD-1027-92. Nuclear Safety Regulations and Directives 1. Nuclear safety specialists shall demonstrate knowledge of the regulations and supporting DOE directives and invoked standards for the development and approval of documented safety analyses (DSAs) for DOE Hazard Category 1, 2, or 3 nuclear facilities. Knowledge Requirements A. Discuss the DOE Policy 420.1, Department of Energy Nuclear Safety Policy, and identify/discuss the current DOE Nuclear Safety Regulations. 1. 10 CFR 820 – Procedural Rules (e.g. Subpart E and exemption process for 10 CFR 830). 2. 10 CFR 835 – Radiation Protection. 3. 10 CFR 830 – Subpart A Quality Assurance. 4. 10 CFR 830 – Subpart B Safety Basis Requirements. B. Discuss the following items related to 10 CFR 830, Nuclear Safety Management: 1. The provisions and requirements contained within the following sections of 10 CFR 830 a. 830.1 – Scope. b. 830.2 – Exclusions. DOE-STD-1183-2026 6 c. 830.3 – Definitions. d. 830.4 – General Requirements. e. 830.5 – Enforcement. f. 830.6 – Recordkeeping.

g. 830.7 – Graded Approach. 2. The applicability of 10 CFR 830, Subpart A, Quality Assurance Requirements, to the requirements of 10 CFR 830 Subpart B. 3. The requirements in sections of 10 CFR 830, Subpart B, Safety Basis Requirements, Sections 830.200 through 830.207. 4. The content of 10 CFR 830, Appendix A to 10 CFR, Subpart B, General Statement of Safety Basis Policy. 5. Identify and discuss the applicability of the acceptable methodologies for preparing a documented safety analysis as listed in Table 1 of Appendix A of 10 CFR 830. C. Discuss the following items related to approval of exemptions to nuclear safety rules and approval of an alternate methodology for developing a documented safety analysis in DOE-STD-1083-2015, Processing Exemptions to Nuclear Safety Rules and Approval of Alternate Methods for Documenting Safety Analysis: 1. The scope, applicability, and responsibilities of field element managers for processing nuclear safety rule exemptions. 2. Concurrence of Central Technical Authorities and the approval official for nuclear safety rule exemptions. 3. Criteria for nuclear safety rule exemptions. 4. Requirements, approval authorities, and concurrences for alternate methodology for preparing a DSA. 5. Evaluations and approval of alternate methodology. D. Discuss the following information provided in DOE-STD-3009-2014, Preparation of Nonreactor Nuclear Facility Documented Safety Analysis, for preparing a DSA that meets the requirements of 10 CFR 830, Subpart B. 1. The purpose, scope, and major tasks involved in the development of the DSA. 2. The application of the graded approach in the DSA preparation process. 3. How quality assurance requirements are applicable to the DSA preparation process. 4. The overall format and content of the DSA as provided in DOE-STD-3009-94 CN-3 and DOE-STD-3009-2014. E. Discuss the requirements in DOE O 420.1 Chg. 3, Facility Safety, for using DOE-STD- 3009-2014 and DOE-STD-1104-2016. DOE-STD-1183-2026 7 F. Discuss the following items from attachment 2, Facility Safety Requirements, of DOE O 420.1, Chg. 3: 1. The objectives and applicability for each of the five chapters. 2. Defense in Depth and active confinement ventilation requirements. 3. Fire hazard analysis (FHA) requirements. 4. Criticality safety evaluation (CSE) requirements and the use of DOE-STD-3007- 2017, Guidelines for Preparing Criticality Safety Evaluations at DOE Nuclear Facilities. 5. Natural phenomena hazard (NPH) general requirements and the use of DOE-STD- 1020-2016, NPH Analysis and Design Criteria for DOE Facilities. 6. Cognizant System Engineer Program general requirements. 7. The purpose of a documented configuration management program and the use of DOE-STD-1073-2016, Configuration Management Program. G. Describe the following requirements and related guidance provided in DOE-STD-1104- 2016, Review and Approval of Nuclear Facility Safety Basis and Safety Design Basis Documents for safety basis documents: 1. The major tasks required to be performed by DOE during the review and approval of a DSA. 2. The purpose, scope and the steps involved in the management of the review/approval task. 3. The purpose, scope and the steps involved in establishing the basis for approval task for a DSA. 4. The purpose, scope and the steps involved in establishing the basis for approval for Technical Safety Requirements (TSRs). 5. The purpose, scope, and steps to establish the basis for approval of related safety basis documents covered in section 6.0 of DOE-STD-1104-2016.

6. The proper use of conditions of approval (COAs) in the approval of DSAs. 7. Situations that are not appropriate to be addressed as COAs and would provide a basis for a rejection of the DSA. 8. The purpose, scope and the steps involved in preparing the Safety Evaluation Report (SER). 9. The format and content requirements of the SER. 10. The appropriate use of SER addendum(s) and/or SERs for revisions. 2. Nuclear safety specialists shall conduct reviews of hazard analysis (including hazard identification, evaluation, and categorization) for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. DOE-STD-1183-2026 8 Knowledge Requirements A. Describe the objective of hazard identification. B. Identify and discuss the steps involved in performing hazard identification. C. Discuss the selection of a hazard identification methodology such as those described in DOE Handbook 1224. D. Describe the required outputs of hazard identification (for example, a summary table that identifies form, type, location, and total quantity). E. Describe the purpose of screening criteria as part of hazard identification and guidance provided in DOE-STD-3009-2014. F. Describe the purpose and scope of hazard evaluation. G. Describe the following hazard evaluation techniques found in the DOE Handbook 1224: 1. What if / Checklist 2. Hazard and operational (HAZOP) analysis 3. Failure modes and effects analysis (FMEA) 4. Event Trees and Fault Trees H. Discuss the following steps for hazard evaluations: 1. The considerations for selecting a specific hazard evaluation technique appropriate to the complexity of operations and the magnitude of the hazards. 2. The requirements for a DOE-STD-3009-2014 unmitigated evaluation, such as the following: a. Assuming the absence of preventive and mitigative controls. b. Using Initial Conditions. c. Identifying consequence estimates that address potential effects on facility workers, co-located workers per DOE-STD-3009-2014, and the public. d. Identifying likelihood estimates. e. Using risk ranking/binning. I. Discuss the purpose and scope of safety control selection and classification. J. Describe the steps involved in performing the safety control selection and classification. K. Describe the following types of controls and when they are required. 1. Safety class (SC) 2. Safety significant (SS) 3. Specific administrative controls (SACs) DOE-STD-1183-2026 9 4. Administrative controls / Safety management programs (SMPs) / Key elements L. Describe how criticality hazards/controls are identified and documented in the hazard evaluation. M. Discuss how DOE-STD-3007-2017 links the criticality safety evaluation process and the requirements in DOE-STD-3009-2014 regarding the identification of safety controls. N. Discuss the control selection hierarchy and defense-in-depth provided in DOE-STD- 3009-2014. O. Discuss the following steps involved in the mitigated hazard evaluations from DOE-STD- 3009-2014: 1. How to identify consequence estimates when crediting mitigative controls for facility workers, co-located workers 2. How to estimate likelihood when crediting mitigative controls for facility workers, co- located workers, and the public 3. How to use mitigated risk ranking/binning P. Discuss the actions to take when an existing facility has no viable control strategy to prevent or mitigate the consequences of one or more accident scenarios from exceeding the Evaluation Guideline (EG).

Q. Discuss the required outputs of the DOE-STD-3009-2014 hazard evaluation task (e.g., the documentation of the rationale for designation of safety significant SSCs or SACs). R. Describe the following related to hazard categorization in DOE-STD-1027-2018, Hazard Categorization of DOE Nuclear Facilities: 1. The purpose of DOE-STD-1027-2018. 2. The process for determining the initial hazard categorization of a DOE nuclear facility. 3. The process for determining the final hazard categorization of a DOE nuclear facility. 4. The four provisions for reducing the facility radioactive material inventory as part of determining the final hazard categorization. 5. The provisions for changing a nuclear facility hazard categorization contained in both DOE-STD-1027-2018. 6. Changes to the radionuclide threshold values presented in DOE-STD-1027-2018. S. Discuss the approval basis for the hazard analysis (which includes hazard identification, hazard evaluation, and hazard categorization) as provided in DOE-STD-1104-2016, including downgrades in facility categorization. DOE-STD-1183-2026 10 MPA 2.1: Perform a review and determine the adequacy of a hazard analysis (including hazard identification, hazard evaluation, and hazard categorization) for a DOE Hazard Category 1, 2, or 3 nuclear facility as documented in a DSA. 1. Verify that existing hazard analysis review criteria (including hazard identification, hazard evaluation, and hazard categorization) meets DOE- STD-1104-2016 requirements or develop criteria that does. 2. Confirm the appropriate application of the summation of radionuclide threshold ratios (sum of ratio calculations) to determine the hazard categorization of a nuclear facility with combinations of radioactive materials as discussed in DOE-STD-1027-2018, Attachment 1. 3. Identify and document comments, if any, based on applicable review criteria. 4. For each comment and issue identified, if any, develop and document a comment justification based on DOE-STD-1104 requirements. Provide an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable directives and/or standards) for its safety significance. 5. Evaluate the adequacy of the contractor’s responses to DOE-identified significant issues, if any. 6. Develop an approval basis document as an input to the SER that meets DOE-STD-1104-2016 requirements for the evaluation of hazard analysis (which includes hazard identification, hazard evaluation, and hazard categorization). 3. Nuclear safety specialists shall conduct reviews of accident analysis for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. Knowledge Requirements A. Describe the purpose and scope of conducting an accident analysis. B. Describe the steps involved in performing the accident analysis. C. Discuss the process for the selection of design basis accidents (DBAs) / evaluation basis accidents (EBAs), such as grouping accidents based on type, and the identification of representative bounding accidents and unique accidents. D. Discuss the application of DOE-STD-3014-2006, Accident Analysis for Aircraft Crash into Hazardous Facilities, when conducting accident analysis. E. Discuss the application of DOE-STD-1628-2013, Development of Probabilistic Risk Assessments for Nuclear Safety Applications, when conducting accident analysis.

Mandatory Performance Activity (MPA) DOE-STD-1183-2026 11 F. Discuss how DOE O 420.1 and its associated natural phenomena hazard (NPH) implementation standard (DOE-STD-1020-2016 or predecessor NPH standards as applicable) are used to derive NPH DBAs / EBAs. G. Discuss the purpose and steps involved in the performance of unmitigated analysis of DBAs / EBAs. H. Identify the computer codes available on the DOE Safety Software Central Registry and the factors to consider when using these codes to support the accident analysis. I. Identify the factors in the source term calculation and describe their derivation. 1. Discuss how material at risk (MAR) is derived and may be excluded. 2. Discuss how damage ratios are derived. 3. Discuss how DOE-HDBK-3010-94, Airborne Release Fraction/Rates and Respirable Fractions for Nonreactor Nuclear Facilities, is used to identify the appropriate airborne release fraction and respirable fraction values. 4. Discuss how the leak path factor (LPF) value is derived, including how the MELCOR and CFAST codes support the derivation of the mitigated LPF. J. Discuss the purpose and steps involved in performing mitigated analysis of DBAs / EBAs. K. Identify the factors for the radiological dose consequence calculation for the public and co-located workers and describe their derivation. L. Identify the three options for selecting an atmospheric dispersion model as described in DOE-STD-3009-2014. M. Describe the parameters listed in DOE-STD-3009-2014, and how they are input into the MACCS2 toolbox code for calculating offsite dose. N. Discuss how the Nuclear Regulatory Commission (NRC) Regulatory Guide 1.145, Atmospheric Dispersion Models for Potential Accident Consequence Assessments of Nuclear Power Plants, is applied to the calculation of chi/Q. O. Discuss how the NRC Regulatory Guide 1.23, Meteorological Monitoring Programs for Nuclear Power Plants, is used in conducting dispersion modeling. P. Discuss how the standards in the documents below apply to radiological dose calculations: • International Commission on Radiological Protection Publication (ICRP) 68, Dose Coefficients for Intakes of Radionuclides by Workers • ICRP 72, Age Dependent Doses to Members of the Public from Intake of Radionuclides, are applied to radiological dose calculations Q. Discuss chemical source term and consequence determination requirements in DOE- STD-3019-2014. DOE-STD-1183-2026 12 Mandatory Performance Activity (MPA) R. Describe the required outputs of accident analysis. S. Discuss the purpose, scope, and steps (including required outputs) to conduct the evaluation of beyond design basis accidents (BDBAs) and beyond evaluation basis accidents (BEBAs). MPA 3.1: Perform the following source term calculations that are consistent with DOE-STD-3009-2014: A. Unmitigated source term calculation of a respective accident scenario. B. Mitigated source term calculation of a respective accident scenario. MPA 3.2: Perform the following radiological dose consequence calculations for both the public and co-located worker that are consistent with DOE-STD-3009-2014 (using a provided chi/Q value): A. Unmitigated dose consequence calculation for a respective accident scenario. B. Mitigated dose consequence calculation for a respective accident scenario. MPA 3.3: Review and determine the adequacy of the accident analysis conducted for a DOE Hazard Category 1, 2, or 3 nuclear facility, as documented in a DSA.

A. Develop review criteria that meets, or verify that existing criteria for reviewing an accident analysis meets, DOE-STD-1104-2016 requirements. B. Identify and document comments, if any, based on applicable review criteria. C. For each comment or issue identified, if any, develop and document a comment justification that provides an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable standards) for its safety significance. D. Evaluate the adequacy of contractor response(s) to significant issues, if any. E. Develop an approval basis to be used as an input to the SER that meets DOE-STD-1104-2016 requirements for the evaluation of the accident analysis. DOE-STD-1183-2026 13 Mandatory Performance Activity (MPA) 4. Nuclear safety specialists shall conduct review of safety structures, systems, and components description, and derivation of TSRs for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. Knowledge Requirements A. Describe the purpose and scope of documentation of safety structures, systems, and components and SACs (e.g. DOE-STD-3009-2014, Chapter 4). B. Describe the steps involved in defining the safety structures, systems, and components, and SACs. C. Identify how safety functions, functional requirements, and performance criteria for safety controls are defined, developed, documented, and how DOE O 420.1C, Chg. 3 requirements apply. D. Discuss the importance of interfacing with DOE SMEs, such as SSOs, FRs, etc., and the contractor cognizant system engineer (CSE) to determine the adequacy of performance criteria / evaluation of safety controls. E. Describe the required outputs of safety control description (e.g. DOE-STD-3009-2014, Chapter 4). F. Discuss the purpose and scope of TSR derivation (e.g. DOE-STD-3009-2014, Chapter 5). G. Describe the steps involved in TSR derivation. H. Discuss the derivation of facility modes. I. Describe the information necessary to derive safety limits, limiting control settings (LCSs), and limiting conditions of operation (LCO) for respective safety controls. J. Discuss the derivation of surveillance requirements (SR). K. Describe how passive design features are identified in TSR derivation. L. Describe how administrative controls such as SACs are identified in TSR derivation. M. Discuss the required outputs of TSR derivation (e.g. DOE-STD-3009-2014, Chapter 5 content/format). MPA 4.1: Perform a review and determine the adequacy of safety control selection, classification, and descriptions for a DOE Hazard Category 1, 2, or 3 nuclear facility, as documented in a DSA. DOE-STD-1183-2026 14 A. Develop review criteria that meets (or verify that existing criteria meets) requirements for reviewing the safety control selection, classification, and description per DOE-STD-1104-2016. B. Identify and document comments, if any, based on applicable review criteria. C. For each significant issue identified, if any, develop and document a comment justification that provides an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable standards) for its safety significance. D. Evaluate the adequacy of responses to significant issues, if any. E. Develop an approval basis to be input in the SER that meets DOE-STD-

1104-2016 requirements for the evaluation of the safety control selection, classification, and description. 5. Nuclear safety specialists shall conduct reviews of technical safety requirements (TSRs) for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. Knowledge Requirements A. Describe the requirements in 10 CFR 830.205 and expectations listed in Appendix A, for establishing TSRs for a DOE Hazard Category 1, 2, or 3 nuclear facility/activity. B. Describe the purpose and scope of TSRs. C. Identify the steps in the development of the TSRs. D. Describe the inputs from the DSA in the development of the TSRs. E. Identify and discuss the specific types of TSRs and the criteria/considerations for determining the most appropriate TSR for the control under consideration. F. Describe the TSR document organization and development guidance in DOE G 423.1- 1B, Implementation Guide for Use in Developing Technical Safety Requirements. G. Describe the general principles of operability and how they are addressed in TSRs. H. Describe how DOE O 420.1 requirements relate to TSR development (such as the development of surveillance requirements based on national codes and standards). I. Identify and discuss the different types of administrative controls in DOE-STD-1186. J. Describe how material at risk (MAR) limits are treated in the TSRs. K. Discuss how design features are treated in the TSRs. L. Describe the four circumstances of TSR violations that can occur and associated reporting requirements. DOE-STD-1183-2026 15 Mandatory Performance Activity (MPA) Mandatory Performance Activity (MPA) M. Describe how general LCO and SR requirements are used in the TSRs. N. Describe the approval bases for TSRs contained in DOE-STD-1104-2016: 1. Discuss the review criteria provided in DOE-STD-1104-2016 used to determine the adequacy of TSRs. 2. Describe the general TSR format/organization (sections 1, 2, 3 4, 5, plus design features and bases appendix) that meets DOE G 423.1-1 guidance. MPA 5.1: Perform a review and determine the adequacy of initial TSRs developed for a DOE Hazard Category 1, 2, or 3 nuclear facility or a change to the TSRs, as documented in a DSA. A. Develop review criteria that meets, or verify existing criteria for reviewing TSRs meets, DOE-STD-1104-2016 requirements. B. Identify and document comments, if any, based on applicable review criteria. C. For each significant issue identified, if any, develop and document a comment justification that provides an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable standards) for its safety significance. D. Evaluate the adequacy of the resolution of significant issues, if any. E. Develop an approval basis for the TSRs as an input to the SER that meets DOE-STD-1104-2016 requirements. O. Discuss the following guidance in Appendix C, Implementation Verification Reviews (IVRs) of DOE G 423.1: 1. The purpose of IVRs (Federal and contractor). 2. The timing of a Federal IVR. 3. Considerations in the application of the graded approach when conducting IVRs. MPA 5.2: Review an implementation verification review (IVR) for an initial TSR implementation or a TSR revision for a DOE Hazard Category 1, 2, or 3 nuclear facility. A. Participate in an implementation verification review (IVR) and evaluate the

adequacy of the proper implementation of a new or revised safety basis control or assumption using DOE G 423.1-1B guidance. DOE-STD-1183-2026 16 6. Nuclear safety specialists shall conduct reviews of a contractor’s Unreviewed Safety Question (USQ) procedure, USQ determination(s) (USQDs), Potential Inadequacy of the Safety Analysis (PISA), Justification for Continued Operations (JCO), and Evaluation of the safety of the situation (ESS). Knowledge Requirements A. Describe the requirements in 10 CFR 830.203 and Appendix A, Section H, for the USQ process. B. Discuss the guidance and related requirements provided in DOE G 424.1-1B, Implementation Guide for Addressing Unreviewed Safety Question (USQ) Requirements, for the following topics: 1. The background and basis for the USQ process. 2. The types of changes that apply to the USQ process. 3. Integration of the USQ process into the facility’s change control process. 4. USQ screening. 5. Documentation retention. 6. Training and qualification. 7. Content of USQ implementing procedures. C. Discuss the requirements in DOE-STD-1104-2016 for approval of other safety basis related documents, such as a contractor’s USQ process procedure, and documents that result from positive USQ determinations. D. Discuss the following guidance and related requirements in DOE G 424.1-1 for performing USQ determinations (USQDs): 1. The questions that need to be addressed when performing a USQD and the possible outcomes. 2. Examples of questions provided in Attachment A of DOE G 424.1-1 that assist in performing USQDs. 3. Documenting the results of the USQD. 4. Actions and approval process that can result from positive USQDs. 5. Lessons learned from applying the USQ process in Attachment B of DOE G 424.1-1. E. Discuss the following guidance and related requirements in DOE G 424.1-1 for Potentially Inadequate Safety Analyses (PISAs), evaluation of the safety of the situation (ESS), and Justification for Continued Operation (JCO): 1. The four actions required for PISAs per 10 CFR 830.203. 2. The initial confirmatory process in declaring a PISA provided in DOE G 424.1-1. 3. The timelines and process for resolution of a PISA. 4. The purpose and content of the ESS. DOE-STD-1183-2026 17 Mandatory Performance Activities (MPA) 5. The purpose and content of a JCO. 6. DOE’s responsibilities/authorities in resolving a PISA. MPA 6.1: Perform a review and determine the adequacy of a contractor’s initial submittal or periodic revision to the USQ procedure. (Note: This may be performed as desktop review using the currently approved USQ procedure if a revision is not planned during the qualification timeframe.) A. Develop review criteria for the contractor’s USQ procedure that are consistent with expectations in DOE G 424.1-1 or verify existing criteria work. B. Identify and document comments, if any, based on applicable review criteria. C. For each significant issue identified, if any, develop and document a comment justification that provides an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable standards) for its safety significance. D. Determine the adequacy of responses to significant comments, if any. E. Develop an approval basis to be an input to an SER or approval letter for the local USQ procedure that addresses the expectations from DOE G 424.1-1.

MPA 6.2: Perform a review and determine the adequacy of the contractor’s implementation of the USQ process NOTE: This may be performed using a sample of completed USQDs or by reviewing the contractor’s USQD summary report, which is required as part of the DSA annual update process. A. Identify and document comments, if any, based on expectations in DOE G 424.1-1 and the contractor’s DOE-approved USQ procedure. B. For each significant issue identified, if any, develop and document a comment justification that provides an appropriate technical basis (e.g. reference to applicable safe harbor requirements, safety basis review criteria, or other applicable standards) for its safety significance. C. Describe appropriate actions to take if the review of USQDs determines that the conclusion of no USQ (negative USQD) is not correct. D. Determine the adequacy of responses to significant comments, if any. E. When a review is being performed on the USQDs identified in the USQD summary report as part of an annual DSA update or safety basis amendment, develop an approval basis to be used as an input to the applicable SER that meets DOE-STD-1104-2016 requirements. DOE-STD-1183-2026 18 F. When the scope of the review includes a categorical exclusion USQD, develop an approval basis to be input into an SER or approval letter for approval of the amendment to the USQ procedure (including the requested categorical exclusion). MPA 6.3: Perform a review of a PISA and determine the adequacy of the resolution of the PISA. NOTE: This may be performed as desktop review using an existing PISA, ESS, or JCO if none of these documents processed during the qualification timeframe. A. If the associated USQD is negative: 1. Verify that the contractor submits an ESS that identifies the cause of the PISA and confirms the associated negative USQD determination. 2. Verify that the ESS confirms the facility is in a safe condition. OR B. If the associated USQD is positive: 1. Develop an approval basis for the ESS that meets DOE-STD-1104- 2016 requirements. OR 2. Develop an approval basis for the JCO that meets DOE-STD-1104- 2016 requirements. 7. Nuclear safety specialists shall demonstrate knowledge of the requirements in 10 CFR 830 Subpart B and DOE-STD-1189-2016, Integration of Safety into the Design Process, for safety design basis documents for new DOE Hazard Category 1, 2, or 3 nuclear facilities, or major modifications of Category 1, 2 or 3 nuclear facilities. Knowledge Requirements A. Describe the requirements in 10 CFR 830.206 for a Preliminary Documented Safety Analysis (PDSA). B. Describe the purpose and scope of DOE-STD-1189-2016, Integration of Safety into the Design Process. C. Discuss the key concepts addressed in DOE-STD-1189-2016, such as the following: 1. The identification of hazards early in the project and the use of an integrated team approach to incorporate safety design into the facility. 2. Establishing the safety design for a nuclear facility in an incrementally progressive way to provide some assurance that the safety design basis will be acceptable when the design is complete. DOE-STD-1183-2026 19 3. The philosophy and logic of the standard is that heightened conservatism is demanded in the earlier phases of a project when design details are not available.

D. Discuss how the DOE Acquisition Management System described in DOE O 413.3, Program and Project Management for the Acquisition of Capital Assets, provides for implementation of safety-in-design requirements in DOE-STD-1189-2016 (e.g. safety design basis document development): 1. Identify the project phases and critical decisions (CDs). 2. Identify key responsibilities to ensure that DOE expectations for safety-in-design are met. 3. Identify the safety design basis documents submitted for DOE approval prior to each CD. 4. Identify the approval authorities for each safety design basis document submittal. E. Identify the five chapter topics addressed in DOE O 420.1and their applicability to new nuclear facilities and/or major modifications to existing nuclear facilities. F. Describe how DOE O 420.1establishes requirements for the design and construction of safety SSCs and how these requirements are addressed in safety design basis documents. G. Discuss how DOE-STD-3009-2014 applies to new nuclear facilities and/or major modifications of existing facilities. H. Describe the process and criteria for determining whether a facility modification is a major modification, including the items below: 1. Identify the criteria for the major modification determination process. 2. Identify the six criteria to evaluate whether a major modification exists. 3. Discuss how the evaluation criteria results determine whether a major modification exists and requirements for DOE concurrence. 4. Discuss how a graded approach applies to a major modification. 5. Discuss the requirement for a design upgrade analysis. 6. Discuss DOE-STD-3009-2014 guidance for updating a DSA for a major modification. I. Discuss the following related to Safety Design Strategy (SDS) documents: 1. The purpose, scope, and required content of the SDS. 2. The Federal roles and responsibilities for approval of the SDS. 3. The approval bases requirements in DOE-STD-1104-2016 for the SDS. J. Discuss the following related to Conceptual Safety Design Reports (CSDRs): 1. The purpose, scope, and content requirements of the CSDR. 2. The Federal roles and responsibilities for approval of the CSDR. DOE-STD-1183-2026 20 3. The approval bases requirements in DOE-STD-1104-2016 for the CSDR and the requirements for development of the Safety Review Letter (SRL). K. Discuss the following related to Preliminary Safety Design Results (PSDRs): 1. The purpose, scope, and content requirements of the PSDR. 2. The Federal roles and responsibilities for approval of the PSDR. 3. The approval bases requirements in DOE-STD-1104-2016 for the PSDR and the requirements for development of the Safety Review Letter (SRL). L. Discuss the following related to Preliminary Documented Safety Analysis (PDSA) documents: 1. The purpose, scope, and content requirements of the PDSA. 2. The Federal roles and responsibilities for approval of the PDSA. 3. The approval bases requirements in DOE-STD-1104-2016 for the PDSA and the requirements for development of the SER. DOE-STD-1183-2026 21 APPENDIX A INITIAL AND CONTINUING TRAINING RECOMMENDATIONS For NSS personnel completing initial qualification, Table 1 provides a list of NTC training courses that support attainment of the performance competency knowledge requirements in this FAQS. Table 1 also lists the NTC instructor-led courses that provide an opportunity for NSS participants to practice performance of the MPAs in this FAQS.

Following initial qualification, NSS personnel should maintain proficiency in the performance of the MPAs identified in this FAQS through satisfactory performance of normally assigned job tasks (e.g. DSA reviews, USQD reviews, etc.). For tasks that are infrequently performed (or where there are no site-specific opportunities for actual performance), personnel may use exercises conducted by the NTC during formal classroom training, or use locally developed exercises, as part of an assigned continuing training program to maintain proficiency. The list of courses in Table 1 should also be referred to for identifying courses as part of the continuing training program for NSS personnel. Note: Refer to the NTC safety training course catalog at https://ntc.doe.gov to verify the currently available safety basis courses and their titles. TABLE 1 – Initial and Continuing Training Course Recommendations Performance Competency (PC) Knowledge Requirements and MPAs Applicable NTC Courses (Note: DE refers to an online course) Training Recommendation: Initial and/or Continuing Training (CT) PC #1 DSA regulations and requirements SBA-100DE, Safety Basis Fundamentals Initial and CT SBA-110DE, DSA Safe Harbors Initial and CT SBA -150DE, TSR Development and Implementation Initial and CT SBA-170DE, SER/ SLR Development Initial and CT PC #2 Hazard analysis SBA-120DE, Hazard Identification, Categorization and Evaluation Initial and CT SBA-170DE, SER / SLR Development Initial and CT MPA 2.1 SBA-220, Hazard Evaluation Review and Approval Initial and CT PC #3 Accident analysis SBA-130DE, Accident Analysis and Control Selection Initial and CT MPA 3.1, 3.2, and 3.3 SBA-230, Accident Analysis & Control Selection Review Initial and CT https://ntc.doe.gov/ DOE-STD-1183-2026 22 PC #4 10 CFR 830 Subpart B requirements SBA-130DE, Accident Analysis and Control Selection Initial and CT SBA-150DE, TSR Development and Implementation Initial and CT MPA 4.1 SBA-230, Accident Analysis & Control Selection Review Initial and CT PC#5 TSR SBA-150DE, TSR Development and Implementation Initial and CT MPA 5.1 and 5.2 SBA-240, TSR Review and Approval Initial and CT PC #6 USQ SBA-160DE, USQ Process Implementation Initial and CT MPA 6.1, 6.2, and 6.3 SBA-250, USQ Process Implementation Review and Approval Initial and CT PC#7 Safety design basis documents SBA-140DE, Safety Design Basis Document Development Initial and CT DOE-STD-1183-2019 23 APPENDIX B NSS ORGANIZATION SPECIFIC PERFORMANCE ACTIVITY RECOMMENDATIONS This appendix includes performance activities (PAs) that are either not routinely performed by NSS personnel across most DOE sites or are not commonly expected to be performed by NSS personnel during initial qualification. If a supervisor determines that any of the activities in this appendix are needed for an NSS within their organization, the applicable PA from this list should be considered for inclusion in the organization specific qualification standard. Use of this appendix is optional and not required. Performance Activities (PA) PA 1: Perform a review and determine the adequacy of a Safety Design Strategy (SDS) document. PA 2: Perform a review and determine the adequacy of a Conceptual Safety Design Report (CSDR). PA 3: Perform a review and determine the adequacy of a Preliminary Documented Safety Analysis (PDSA) PA 4: Perform a review of and determine the adequacy of a major modification determination.

PA 5: Prepare a Safety Evaluation Report (SER) providing the basis for approval of a DSA or TSR revision. Note: Organizational-specific evaluation criteria should be developed for each selected performance activity. The following generic evaluation criteria may be used and updated as necessary: 1) Develop review criteria, or verify existing criteria for the selected activity, meets applicable DOE requirements. 2) Identify and document comments, if any, based on applicable review criteria. 3) Provide a technically defensive basis for the safety significance of each comment, if any. 4) Evaluate adequacy of resolution of significant comments, if any. 5) Develop an approval basis as an input to the required approval document for the applicable review. DOE-STD-1183-2026 February 2026 This document is available on the FTCP SharePoint site at APPROVAL ACKNOWLEDGMENT PURPOSE APPLICABILITY IMPLEMENTATION EVALUATION REQUIREMENTS INITIAL QUALIFICATION AND TRAINING DUTIES AND RESPONSIBILITIES BACKGROUND AND EXPERIENCE 1. Education 2. Experience REQUIRED PERFORMANCE COMPETENCIES 1. Nuclear safety specialists shall demonstrate knowledge of the regulations and supporting DOE directives and invoked standards for the development and approval of documented safety analyses (DSAs) for DOE Hazard Category 1, 2, or 3 nuclear facilities. 2. Nuclear safety specialists shall conduct reviews of hazard analysis (including hazard identification, evaluation, and categorization) for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart ... 3. Nuclear safety specialists shall conduct reviews of accident analysis for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. 4. Nuclear safety specialists shall conduct review of safety structures, systems, and components description, and derivation of TSRs for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, S... 5. Nuclear safety specialists shall conduct reviews of technical safety requirements (TSRs) for DOE Hazard Category 1, 2, or 3 nuclear facilities that support DOE approval as required by 10 CFR 830 Subpart B, Safety Basis Requirements. 6. Nuclear safety specialists shall conduct reviews of a contractor’s Unreviewed Safety Question (USQ) procedure, USQ determination(s) (USQDs), Potential Inadequacy of the Safety Analysis (PISA), Justification for Continued Operations (JCO), and Evalu... OR 7. Nuclear safety specialists shall demonstrate knowledge of the requirements in 10 CFR 830 Subpart B and DOE-STD-1189-2016, Integration of Safety into the Design Process, for safety design basis documents for new DOE Hazard Category 1, 2, or 3 nuclea... Performance Activities (PA)