ML24082A163

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IMC 1247 Appendix C6, Fuel Facility Criticality Safety Inspector Technical Proficiency Training and Qualification
ML24082A163
Person / Time
Issue date: 07/24/2024
From: Tomeka Terry
NRC/NMSS/DFM/IOB
To:
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ML24082A160 List:
References
CN 24-021
Download: ML24082A163 (1)
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NRC INSPECTION MANUAL NMSS/DFM

INSPECTION MANUAL CHAPTER 1247 APPENDIX C6

FUEL FACILITY CRITICALITY SAFETY INSPECTOR TECHNICAL PROFICIENCY TRAINING AND QUALIFICATION

Effective Date: 07/24/2024

TABLE OF CONTENTS

Introduction................................................................................................................................... 1 Required Fuel Facility Criticality Safety Inspector Training Courses............................................ 1 Required Refresher Training:........................................................................................................ 1 Continuing Training:...................................................................................................................... 1 Strongly Encouraged Participation:............................................................................................... 2 Required Inspection Accompaniments:........................................................................................ 2 (SG-NCS -1) Regulatory Framework.......................................................................................... 4 (SG-NCS -2) Regulatory Guidance............................................................................................ 5 (SG-NCS -3) Generic Communications...................................................................................... 8 (SG-NCS -4) Industry Codes and Standards........................................................................... 11 (SG-NCS -5) Fuel Cycle Events............................................................................................... 13 (OJT-NCS -1) Criticality Safety Inspections............................................................................. 17 (OJT-NCS -2) Criticality Safety Analytical Methods................................................................. 20 Fuel Facility Criticality Safety Inspector Technical Proficiency -Level Signature Card and Certification.......................................................................................................................... 22 Form 1: Fuel Facility Criticality Safety Inspector Technical Proficiency -Level Equivalency Justification.......................................................................................................................... 23 : Revision History for IMC 1247, Appendix C6................................................ Att1-1

Issue Date: 07/24/24 i 1247 App C6 INTRODUCTION

Consult with your supervisor prior to beginning the activities or completing the courses in this qualification journal. You will need to complete the Basic Inspector Certification Journal prior to beginning the activities in this Appendix. You may complete the General Proficiency requirements contained in Appendix B together with the Technical Proficiency requirements outlined in this journal.

Several of the topics have both an individual study guide and on-the-job training. You must complete the individual study guide before beginning the corresponding on-the-job training.

Before signing up for any course, be sure that you have checked and have met any prerequisites.

REQUIRED FUEL FACILITY CRITICALITY SAFETY INSPECTOR TRAINING COURSES

  • F-101S, Nuclear Criticality Safety Study Guide
  • F-201 or 201S, Fuel Cycle Processes
  • F-206S, Fire Protection for Fuel Cycle Facilities Self Study
  • SCALE Criticality Safety Calculations (Calculations of Keff using KENO offered at Oak Ridge National Laboratory)
  • Department of Energy Nuclear Criticality Safety Program Hands -On Criticality Safety Evaluation (CSE) Course (2 weeks)

REQUIRED REFRESHER TRAINING:

(To be completed every 3 years)

  • (16 Hours) Refresher Technical Training Seminar as approved by supervisor
  • (8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />) OSHA HAZWOPER Refresher Course or TMS Health and Safety Suite (HAZWOPER) as identified in Memorandum dated May 7, 2010, from Catherine Haney to NMSS Branch Chiefs (See ADAMS Accession No. M L100200563 for details of equivalent TMS training modules).

CONTINUING TRAINING:

These classes are suggested for continuing training for inspectors. You may propose alternate courses in additional topic areas to your supervisor.

  • MCNP - Los Alamos National Laboratory
  • SCALE Sensitivity and Uncertainty Analysis for Criticality Assessment and Validation (Variance Reduction Techniques and Tsunami)
  • SCALE Criticality Safety and Radiation Shielding
  • University of New Mexico Assessments and Criticality Safety Evaluations
  • University of New Mexico - Nuclear Criticality Short Course
  • University of Tennessee Monte Carlo Analysis (NE 483)
  • University of Tennessee Selected Topics in Nuclear Criticality (NE 582)

Issue Date: 07/24/24 1 1247 App C6 STRONGLY ENCOURAGED PARTICIPATION:

Participation in the development and maintenance of American Nuclear Society (ANS) Chapter 8 standards as a member of an ANS-8 standards committee is strongly encouraged. Frequent attendance of ANS-8 meetings is also strongly encouraged. This is a strong recommendation, not a requirement. However, NRC staff participation in the development and maintenance of ANS-8 standards is important as NRC endorses many of the ANS -8 standards in Regulatory Guide 3.71. NRC generally maintains one voting member for each ANS standard; however, NRC staff may also participate in ANS-8 standards as non-voting associate members or non-voting observers. You should consult with your branch chief and the NMSS Standards Coordinator to discuss interests in standards participation.

REQUIRED INSPECTION ACCOMPANIMENTS:

You are required to accompany inspectors on a minimum of four criticality safety inspections.

You should consult with your branch chief and regional staff to plan accompaniments at the following types of facilities:

  • Category I fuel fabrication facility
  • Category III fuel fabrication facility - dry process
  • Category III fuel fabrication facility - wet process
  • Enrichment facility

Issue Date: 07/24/24 2 1247 App C6 Fuel Facility Criticality Safety Inspector Individual Study Activities

Issue Date: 07/24/24 3 1247 App C6 (ISA-NCS-1) Regulatory Framework

PURPOSE:

The purpose of this activity is to acquaint you with the regulations that specify the requirements for all aspects of Domestic Licensing of Special Nuclear Material. This individual study activities (ISA)will help you to understand the content of criticality safety portions of the regulations.

COMPETENCY AREAS: REGULATORY FRAMEWORK

LEVEL OF EFFORT: 20-80 hours

REFERENCES:

  • Safety Evaluation Report (SER) for your reference facility
  • License Application for your reference facility
  • ISA summary for your reference facility

EVALUATION CRITERIA:

Upon completion of this activity, you should be able to do the following:

  • Describe the purpose of SERs.
  • Describe the interaction between criticality safety licensing and inspection.

TASKS:

  • Read and discuss with a qualified Nuclear Criticality Safety (NSC) inspector or reviewer the criticality safety portions of 10 CFR Part 70.
  • Discuss the SER for your reference facility with a qualified NCS inspector or reviewer.
  • Discuss with a qualified NCS inspector or reviewer the difference between inspection and licensing.

DOCUMENTATION: Fuel Facility Operations Inspector Technical Proficiency -Level Qualification Signature Card, Item ISA - SG-NCS-1

Issue Date: 07/24/24 4 1247 App C6 (ISA-NCS-2) Regulatory Guidance

PURPOSE:

The purpose of this is to familiarize you with the regulatory guidance available for NCS inspectors for fuel cycle facilities.

COMPETENCY AREAS: REGULATORY FRAMEWORK

LEVEL OF EFFORT: 60 hours6.944444e-4 days <br />0.0167 hours <br />9.920635e-5 weeks <br />2.283e-5 months <br />

REFERENCES:

  • NUREG-1520, Standard Review Plan for the Review of a License Application for a Fuel Cycle Facility, Chapters 2, 3, 5, and 11
  • NUREG-1537, Guidelines for Preparing and Reviewing Applications for the Licensing of Non-Power Reactors
  • LA-13638, A Review of Criticality Accidents.
  • LA-10860-MS, Critical Dimensions of systems Containing 235U, 239Pu, and 233U.
  • LA-12808, Nuclear Criticality Safety Guide.
  • ARH-600, Criticality Handbook, W.A. Blyckert, Atlantic Richfield Hanford Company
  • TID-7016, The Nuclear Safety Guide
  • R. A. Knief, Nuclear Criticality Safety - Theory and Practice, American Nuclear Society
  • RG-3.71, Nuclear Criticality Safety Standards for Nuclear Materials Outside Reactor Cores
  • ANSI/ANS-8 Standards

EVALUATION CRITERIA:

Upon completion of this activity, you should be able to do the following:

  • Understand the guidance that the NRC has for criticality safety in fuel cycle facilities.

Issue Date: 07/24/24 5 1247 App C6

  • Demonstrate a high level of proficiency i n discussing the physics of criticality and criticality safety parameters.
  • Demonstrate a high level of proficiency in discussing the concepts of Tasks 3 - 13.

TASKS:

  • Read LA-13638, NUREG/CR -6698, and Nuclear Criticality Safety - Theory and Practice.
  • Discuss the physics of criticality with a qualified criticality safety specialist. Discuss the non-linear effects of changes in NCS parameters on k eff.
  • Read Chapters 3 and 5 of NUREG-1520, with specific focus on the appendices to Chapter 5.
  • Familiarize yourself with RG-3.71, LA -10860-MS, and the ANSI/ANS -8 standards.

Discuss how LA-10860-MS and the ANSI/ANS -8 standards are used in licensing review with a qualified criticality specialist.

  • Discuss with a qualified criticality specialist the concept of risk as it relates to 10 CFR 70.61(b), and whether likelihood should be assessed instantaneously or as a long-term average.
  • Discuss with a qualified criticality specialist the common inappropriate use of k eff as a risk assessment tool.
  • Discuss with a qualified criticality specialist the requirements of 10 CFR 70.61(d).

Discuss the concept of the approved margin of subcriticality (MoS) as it is stated in 10 CFR 70.61(d).

  • Discuss with a qualified criticality specialist the similarities/differences between the requirements of 10 CFR 70.61(b) and 10 CFR 70.61(d). Discuss the significance of these being two separate requirements.
  • Discuss with a qualified criticality specialist the concepts of the Double Contingency Principle and Process Analysis requirement (ANSI/ANS-8.1) and their relationship with the requirements of 10 CFR 70.61(d) and 10 CFR 70.61(b).
  • Discuss with a qualified criticality specialist common differences in interpretation of the Double Contingency Principle (DCP). Discuss the meaning of the term unlikely and how its interpretation can vary. Discuss the meaning of the term independent and how its interpretation can vary with respect to whether a single criticality safety parameter can be controlled or if multiple parameters must be controlled. Discuss whether the DCP represents a design criterion or defines a state of existence, and how this interpretation can vary.
  • Discuss with a qualified criticality specialist the use of the terms credible and not credible and their significance. Discuss the criteria used to assess whether an upset should be considered not credible.

Issue Date: 07/24/24 6 1247 App C6

  • Discuss with a qualified criticality specialist the methods for conducting criticality safety evaluations (CSEs).
  • Discuss with a qualified criticality safety specialist the concept of validation. Discuss the concept and methods used in the determination of bias and bias uncertainty, the minimum subcritical margin (MMS), and overall margin of subcriticality (MoS). Disc uss the considerations involved in evaluating the adequacy of the MMS and how these concepts relate to validation.
  • Discuss the concept of positive bias with a qualified criticality safety specialist. Discuss agency position on the use of positive bias.
  • Discuss with a qualified criticality safety specialist the methods for treating criticality safety parameters (mass, geometry, moderation, etc.). Discuss the concept of optimizing parameters unless specifically controlled or otherwise limited to a credible value less reactive than optimum.
  • Discuss with a qualified criticality safety specialist the concepts of the criticality accident alarm system (CAAS).

DOCUMENTATION: Fuel Facility Operations Inspector Technical Proficiency -Level Qualification Signature Card, Item ISA -NCS -2.

Issue Date: 07/24/24 7 1247 App C6 (ISA-NCS -3) Generic Communications

PURPOSE:

The purposed of this is to familiarize you with the NRC generic communications that have been issued for fuel cycle facilities.

COMPETENCY AREAS: REGULATORY FRAMEWORK INSPECTION

LEVEL OF EFFORT: 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />

REFERENCES:

  • IN-18-06, Determination of Management Measures for Process Isolation Controls Designated as Items Relied on for Safety and Implementation of Adequate Quality Assurance Measures for Plant Features and Procedures
  • IN-18-05, Long-Term Fissile Material Accumulation Due to Unanalyzed or Improperly Analyzed Conditions and Fuel Cycle Facilities
  • IN 16-13, Uranium Accumulation in Fuel Cycle Facility Ventilation and Scrubber Systems
  • IN 11-06, Erroneous Criticality Alarm Monitoring Signal Caused by Incorrect Data Acquisition Module Configuration
  • IN 10-16, Failure to Disable Unsafe Geometry Bandsaw Reservoir Results i n Criticality Safety-Related Alert
  • IN 10-15, Fuel Cycle Facility Configuration Management Errors
  • (IN) 08-14, Criticality Safety -related Events Resulting from Fissile Material Operations under Procedures Not Reviewed by Criticality Safety Staff
  • IN 08-08, Maintenance Procedures Compromise Double-Contingency of UO2 Powder -

Handling Equipment at Fuel Cycle Facility

  • IN 07-30, Radiological Controls Create Criticality Safety Accident Scenario for Fissile Solution Container Transport at Fuel Cycle Facility
  • IN 07-13, Use of As -found Conditions to Evaluate Criticality -related Process Upsets at Fuel Cycle Facilities
  • IN 06-10, Use of Concentration Control for Criticality Safety

Issue Date: 07/24/24 8 1247 App C6

  • IN 06-07, Inappropriate Use of a Single-Parameter Limit as a Nuclear Criticality Safety Limit
  • IN 05-31, Potential Non -Conservative Error in Preparing Problem -Dependent Cross Sections for Use with the Keno V.A. or Keno-VI Criticality Code
  • IN 05-28, Inadequate Test Procedures Fails to Detect Inoperable Criticality Accident Alarm Horns
  • IN 05-22, Inadequate Criticality Safety Analysis of Ventilation Systems at Fuel Cycle Facilities
  • IN 05-13, Potential Non -Conservative Error in Modeling Geometric Regions in the Keno-V.a Criticality Code
  • IN 05-12, Excessively Large Criticality Safety Limits Fail to Provide Double Contingency at Fuel Cycle Facility
  • IN 05-05, Improving Material Control and Accountability Interface with Criticality Safety Activities at Fuel Cycle Facilities
  • IN 04-14, Use of less than Optimal Bounding Assumptions in Criticality Safety Analysis at Fuel Cycle Facilities
  • IN 94-73, Clarification of Criticality Reporting Criteria
  • IN 93-60, Reporting Fuel Cycle and Materials Events to the NRC Operations Center
  • IN 91-84, Problems with Criticality Alarm Components/Systems
  • IN 90-63, Management Attention to the Establishment and Maintenance of a Nuclear Criticality Safety Program

EVALUATION CRITERIA:

Upon completion of this activity, you should be able to do the following:

  • Identify criticality safety problems that have occurred in fuel cycle facilities and be able to apply lessons learned to inspection activities.

TASKS:

  • Review the listed references and discuss them and lessons learned with a qualified criticality safety inspector.

Issue Date: 07/24/24 9 1247 App C6

  • Discuss recent problems experienced at fuel cycle facilities with a qualified criticality safety inspector.

DOCUMENTATION: Fuel Facility Operations Inspector Technical Proficiency -Level Qualification Signature Card, Item ISA -NCS -3.

Issue Date: 07/24/24 10 1247 App C6 (ISA-NCS -4) Industry Codes and Standards

PURPOSE:

The purpose of this is to familiarize you with criticality safety industry codes and standards that are used by the NRC and fuel cycle facilities.

COMPETENCY AREA: INSPECTION TECHNICAL AREA EXPERTISE

LEVEL OF EFFORT: 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br />

REFERENCES:

  • RG-3.71, Nuclear Criticality Safety Standards for Nuclear Materials Outside Reactor Cores (ML18169A258)
  • ANSI NQA-1 Quality Assurance Requirements for Nuclear Facilities
  • ANS 8.1, Nuclear Criticality Safety in Operations with Fissionable Materials Outside Reactors
  • ANS 8.3, Criticality Accident Alarm System
  • ANS 8.5, Use of Borosilicate-Glass Raschig Rings as a Neutron Absorber in Solutions of Fissile Material
  • ANS 8.6, Safety in Conducting Subcritical Neutron-Multiplication Measurements i n Situ
  • ANS 8.7, Nuclear Criticality Safety in the Storage of Fissile Materials
  • ANS 8.10, Criteria for Nuclear Criticality Safety Controls in Operations w ith Shielding and Confinement
  • ANS 8.12, Nuclear Criticality Control and Safety of Plutonium -Uranium Fuel Mixtures Outside Reactors
  • ANS 8.14, Use of Soluble Neutron Absorbers in Nuclear Facilities Outside Reactors
  • ANS 8.15, Nuclear Criticality Control of Special Actinide Elements
  • ANS 8.17, Criticality Safety Criteria for the Handling, Storage, and Transportation of LWR Fuel Outside Reactors
  • ANS 8.19, Administrative Practices for Nuclear Criticality Safety
  • ANS 8.20, Nuclear Criticality Safety Training
  • ANS 8.21, Use of Fixed Neutron Absorbers in Nuclear Facilities Outside Reactors

Issue Date: 07/24/24 11 1247 App C6

  • ANS 8.22, Nuclear Criticality Safety Based on Limiting and Controlling Moderators
  • ANS 8.23, Nuclear Criticality Accident Emergency Planning and Response
  • ANS 8.24, Validation of Neutron Transport Methods for Nuclear Criticality Safety Calculations
  • ANS 8.26, Criticality Safety Engineer Training and Qualification Program
  • ISO 7753, Nuclear Energy - Performance and Testing Requirements for Criticality Detection and Alarm Systems First Edition
  • IAEA Specific Safety Guide (SSG-27), Criticality Safety in the Handling of Fissile Material

EVALUATION CRITERIA:

Upon completion of this activity, you should be able to do the following:

  • Describe the significance of the ANSI/ANS 8 standards on the criticality safety community. Discuss the involvement of NRC staff on the ANS working groups.
  • Describe how the fuel cycle licensees use and commit to the ANSI/ANS 8 standards.
  • Discuss how quality assurance programs and management measures are used in criticality safety.

TASKS:

  • Review Reg Guide 3.71 and the endorsed ANSI/ANS-8 Consensus Standards and discuss with a qualified criticality safety inspector.
  • Discuss with a qualified criticality safety inspector or reviewer how licensees meet the double contingency principle. Discuss the history of the double contingency principle and how different organizations have different views on the implementation of the double contingency principle.
  • Discuss with a qualified criticality safety inspector or reviewer how single parameter limits are used at facilities. Describe the conservatism that is established as part of the single parameter limit as compared to a calculated limit.

DOCUMENTATION: Fuel Facility Operations Inspector Technical Proficiency -Level Qualification Signature Card, Item ISA -NCS -4.

Issue Date: 07/24/24 12 1247 App C6 (ISA-NCS -5) Fuel Cycle Events

PURPOSE:

The purpose of this is to familiarize you with previous accidents in fuel cycle facilities and how these have impacted the regulatory framework and the criticality safety community.

COMPETENCY AREAS: INSPECTION

LEVEL OF EFFORT: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />

REFERENCES:

  • NUREG/CR-6410, Nuclear Fuel C ycle Facility Accident Analysis Handbook.
  • NUREG-1450, Potential Criticality Accident at the GE Nuclear Fuel and Compone nt Manufacturing Facility, May 29, 1991.
  • NUREG-1198, Release of UF6 From a Ruptured Model 48Y cylinder at Sequoyah Fuels Corporation Facility: Lessons-Learned Report.
  • NUREG-1189, Assessment of the Public Health Impact f rom the Accidental Release of UF6 at the Sequoyah Fuels Corporation Facility at Gore, Oklahoma.
  • F-206S, Fire Protection f or Fuel Cycle Facilities Self-Study Course Manual.
  • LA-13638, A Review of Criticality Accidents.
  • NRC INSPECTION REPORT (IR) NO. 70-1151/2004-001
  • NRC IR 70-143/2006-006
  • NRC IR 70-143/2006-011
  • NRC IR 70-143/2006-012
  • NRC IR 70-143/2006-019
  • NRC IR 70-27/2009-006
  • NRC IR 70-27/2015-006
  • NRC IR 70-27/2015-008
  • NRC IR 70-27/2017-007
  • NRC IR 70-143/2015-002
  • NRC IR 70-1151/2016-007

Issue Date: 07/24/24 13 1247 App C6 EVALUATION CRITERIA:

Upon completion of this activity, you should be able to do the following:

  • Understand how previous accidents in fuel cycle facilities have impacted the regulatory framework and the criticality safety community.
  • Understand how to apply lessons learned from previous criticality safety accidents to what to look for when inspecting.

TASKS:

  • Read and discuss how NUREG/CR-6410 applies to criticality safety with a qualified criticality safety inspector or reviewer.
  • Discuss the Nuclear Fuel Services elevator pit event in 2006 with a qualified criticality safety inspector or reviewer. Discuss the inspection reports (IR) IR 70-143/2006-006, IR 70-143/2006-011, IR 70-143/2006-012, and IR 70-143/2006-019, and enforcement actions that were taken.
  • Discuss the Westinghouse Incinerator event in 2004 and the Scrubber event in 2016 with a qualified criticality safety inspector or reviewer. Discuss IRs 70-1151/2004-001/2016-007 and enforcement actions that were taken.
  • Discuss the B&W bandsaw event in 2009 and the desiccant filter event in 2017 with a qualified criticality safety inspector or reviewer. Discuss IRs 70-27/2009-006/2017-007 and enforcement actions that were taken.
  • Discuss with a qualified criticality safety inspector or reviewer the Sequoyah fuels accidents in 1986 and 1992 after reading NUREGs 1198 and 1189.
  • Discuss with a qualified criticality safety inspector or reviewer the General Electric (GE )

Near criticality event in 1991 after reading NUREG -1450.

  • Read the UO2 fires portion of the Fire Protection for Fuel Cycle Facilities Self-Study Course Manual (F-206S), and discuss with a fire safety inspector UO2 fires, and then discuss with a criticality safety inspector or reviewer how fire safety and criticality safety interact.
  • Review LA-13638 and discuss with a criticality safety inspector or reviewer the United Nuclear-Wood River Junction accident in 1964.
  • Review LA-13638 and discuss with a criticality safety inspector or reviewer the Y-12 accident in 1958.
  • Review LA-13638 and discuss with a criticality safety inspector or reviewer the fuel fabrication accident in Japan in 1999. Be able to discuss common failures that happen in all of the events.

Issue Date: 07/24/24 14 1247 App C6 DOCUMENTATION: Fuel Facility Operations Inspector Technical Proficiency -Level Qualification Signature Card, Item ISA -NCS -5.

Issue Date: 07/24/24 15 1247 App C6 Fuel Facility Criticality Safety Inspector On-the-J ob Activities

Issue Date: 07/24/24 16 1247 App C6 (OJT-NCS -1) Criticality Safety Inspections

PURPOSE:

The purpose of this activity is to familiarize you with the proper method for inspecting criticality safety documents and organizations.

COMPETENCY AREA: INSPECTION REGULATORY FRAMEWORK

LEVEL OF EFFORT: 120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />

REFERENCES:

  • IP 88072, Plant Modifications (Triennial)
  • ISA summary for designated facility

EVALUATION CRITERIA:

Upon completion of the tasks, you should be able to do the following:

  • Identify the hazards (nuclear criticality safety, radiation protection, chemical safety, and fire protection) associated with your designated fuel cycle facility.
  • Identify the IROFS and management measures for a designated operation or process to ensure that process operations remain safe during normal and credible abnormal conditions.
  • Identify the controlled parameters and controls, and safety limits for a specified process.
  • Describe the differences between the general types of criticality safety controls used an LEU facility and an HEU facility.

Issue Date: 07/24/24 17 1247 App C6 TASKS:

  • Perform the following tasks as part of the four (4) required OJT accompaniments:
  • Review the licensees ISA methodology for your assigned facility and select a risk significant area or process. Discuss with a qualified criticality safety inspector how the methodology applies to criticality safety. Discuss how the licensee identifies cri ticality safety hazards.
  • Review the licensees methodology for conducting criticality safety evaluations (CSEs).

Review a sample of the licensees CSEs. Discuss with a qualified criticality safety inspector the licensees approach to meeting the Double Contingency Principle, the Process Analysis requirement (ANSI/ANS -8.1), and 10 CFR 70.61(d).

  • Review the licensees commitments related to the treatment of criticality safety parameters. Identify and discuss with a qualified criticality safety inspector which criticality safety parameters are controlled and how. Review a sample of the licensees calculations and discuss how the models reflect the commitments related to the treatment of criticality safety parameters.
  • Review the License Application and criticality safety procedures used by the licensee at your designated facility to implement the criticality safety program. Discuss the information with a qualified criticality safety inspector.
  • Review the License Application and procedures used by the licensee at your designated facility to implement the Corrective Action Program (CAP). The License Application requirements for the CAP may vary between fuel facilities.
  • Obtain a copy of an internal and external audit of criticality safety. Discuss the information with a qualified criticality safety inspector.
  • Review the licensees commitments related to the treatment of criticality safety parameters. Identify and discuss with a qualified criticality safety specialist which criticality safety parameters are controlled and how. Review a sample of the licensees calculations and discuss how the models reflect the commitments related to the treatment of criticality safety parameters.
  • Review the licensees Validation Report, including the determination of bias and bias uncertainty, MMS, and MoS. Discuss the considerations involved in evaluating the adequacy of the licensees proposed MMS with a qualified criticality safety inspector.
  • Review the license application against the criteria in NUREG -1520. Discuss the review with a qualified criticality safety inspector and the specifics of how the licensee meets the requirements of 10 CFR Part 70. Document conclusions appropriately (e.g., SE R, memo, etc.).
  • Discuss the operation and maintenance of the safety controls with the workers. Discuss normal and emergency operational requirements.
  • Discuss procedural compliance with the workers.

Issue Date: 07/24/24 18 1247 App C6

  • Review the maintenance and surveillance requirements for the safety controls as listed in the Management Measures. Review a sampling of maintenance records for the maintenance and surveillance testing for specific controls.
  • Discuss your evaluation of the operability of the safety controls with your supervisor or the qualified criticality safety inspector.

DOCUMENTATION: Fuel Facility Criticality Safety Inspector Proficiency -Level Qualification Signature Card, Item OJT-NCS -1.

Issue Date: 07/24/24 19 1247 App C6 (OJT-NCS -2) Criticality Safety Analytical Methods

PURPOSE:

The purpose of this activity is to familiarize you with the criticality safety codes that you may encounter at licensees sites.

COMPETENCY AREA: INSPECTION

LEVEL OF EFFORT: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />

REFERENCES:

  • SCALE Criticality Safety Calculations Course (via ORNL)
  • SCALE Sensitivity and Uncertainty Analysis for Criticality Safety Assessment and Validation (via ORNL)
  • LA-UR-04-0294, Criticality Calculations with MCNP5: A Primer.

EVALUATION CRITERIA:

Upon completion of the tasks, you should be able to do the following:

  • Demonstrate a general knowledge of the mathematics and physics associated with criticality safety computer codes
  • Demonstrate proficiency in using criticality safety computer codes such as SCALE or MCNP to calculate the keff of configurations.
  • Demonstrate proficiency in using computer codes such as SCALE to conduct sensitivity and uncertainty analysis.
  • Demonstrate an understanding of criticality accident alarm system (CAAS) detector placement techniques.

TASKS:

  • Participate in one or more quarterly criticality safety community of practice (CoP) group exercises.
  • In support of the tasks in OJT-NCS -1, generate a plot showing spherical critical mass as a function of concentration (i.e., critical mass curve) for a uranium compound and water mixture to evaluate the effects of varying degrees of moderation. The uranium compound used should be appropriate for the system(s) evaluated in OJT-NCS -1.

Identify areas on the plot representing over -moderated, optimally -moderated, and under-moderated. Identify the relative minimum critical mass of the system.

Issue Date: 07/24/24 20 1247 App C6

  • Repeat bullet 2 using a different enrichment to evaluate the effects of varying degrees of enrichment.
  • Repeat bullet 2 using varying water-reflector thicknesses and varying reflector materials (i.e. reflectors other than water) to evaluate the effects of varying degrees of reflection.
  • Have a criticality safety inspector or reviewer assign you a practice criticality safety evaluation to do based on a process in your reference facility. Your evaluation should include physically measuring your system, creating controls, and defending your evaluation to a criticality safety inspector.

DOCUMENTATION: Fuel Facility Criticality Safety Inspector Proficiency -Level Qualification Signature Card, Item OJT-NCS -3.

Issue Date: 07/24/24 21 1247 App C6 Fuel Facility Criticality Safety Inspector Technical Proficiency-Level Signature Card and Certification

Inspector Name: Employee Supervisors Initials/Date Signature/Date A. Training Courses

SCALE training class

Hands on Criticality Safety Course (DOE)

F-101S, Nuclear Criticality Safety Self Study

F-201 or 201S, Fuel Cycle Processes

F-206S, Fire Protection for Fuel Cycle Facilities Self Study

B. Individual Study Activities

ISA-NCS -1 Regulatory Framework

ISA-NCS-2 Regulatory Guidance

ISA-NCS-3 Generic Communications

ISA-NCS-4 Industry Codes and Standards

ISA-NCS-5 Fuel Cycle Events C. On-the-Job Training Activities

(OJT -NCS -1) Criticality Safety Inspections

(OJT -NCS -2) Criticality Safety Analytical Methods

Supervisors signature indicates successful completion of all required courses and activities listed in this journal and readiness to appear before the Oral Board.

Supervisors Signature: _____________________________ Date: __________

The appropriate Form 1, Fuel Facility Operations Inspector Basic -Level Equivalency Justification, must accompany this signature card and certification, if applicable.

Issue Date: 07/24/24 22 1247 App C6 Form 1: Fuel Facility Criticality Safety Inspector Technical Proficiency-Level Equivalency Justification

Inspector Name: Identify equivalent training and experience for which the inspector is to be given credit.

A. Training Courses

SCALE training class

Hands on Criticality Safety Course

F-101S, Nuclear Criticality Safety Self Study

F-201 or 201S, Fuel Cycle Processes F-206S, Fire Protection for Fuel Cycle Facilities Self Study B. Individual Study Guides

ISA-NCS -1 Regulatory Framework

ISA-NSC-2 Regulatory Guidance

ISA-NSC-3 Generic Communications

ISA-NCS-4 Industry Codes and Standards

ISA-SG-NCS-5 Fuel Cycle Events C. On-the-Job Training Activities

OJT-NCS 1 Criticality Safety Inspections OJT-NCS-2 Criticality Safety Analytical Methods

Supervisors Signature: _____________________________ Date: __________

Issue Date: 07/24/24 23 1247 App C6 Attachment 1: Revision History for IMC 1247, Appendix C6

Commitment Accession Description of Changes Description of Comment Resolution Tracking Number Training Required and Closed Feedback Number Issue Date and Completion Form Accession Change Notice Date Number (Pre-Decisional Non-Public Information N/A ML14051A526 New inspection manual chapter appendix to specify None ML14084A483 06/11/14 qualification requirements for NRC criticality safety CN 14-012 inspectors. Researched commitments for four years and found none.

N/A ML24082A163 First revision of the IMC appendix for criticality safety N/A N/A 07/24/24 inspectors. Revised evaluation criteria and tasks for CN 24-021 training courses, individual study guides, and on-the-job training activities.

Issue Date: 07/24/24 Att1-1 1247 App C6

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