This Safety Guide, a revision of IAEA Safety Standards Series No. SSG-5, was initiated to provide recommendations on site evaluation, design, construction, commissioning, operation and preparation for decommissioning of conversion facilities and uranium enrichment facilities to meet the applicable requirements established in IAEA Safety Standards No. SSR-4, Safety of Nuclear Fuel Cycle Facilities, which incorporates the lessons learned from the accident at the Fukushima Daiichi nuclear power plant. The revised Safety Guide also reflects current operational practices at conversion facilities and uranium enrichment facilities. The recommendations in this publication are aimed primarily at operating organizations of conversion facilities and uranium enrichment facilities, regulatory bodies and designers.

• 1. INTRODUCTION
  • Background
  • Objective
  • Scope
  • Structure
• 2. HAZARDS IN CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
• 3. MANAGEMENT AND VERIFICATION OF SAFETY FOR CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
  • Management responsibility
  • Resource management
  • Process implementation
  • Measurement, assessment, evaluation and improvement
  • Verification of safety
• 4. SITE EVALUATION FOR CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
• 5. DESIGN OF CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
  • Safety functions
    • Design basis and safety analysis
    • Structures, systems and components important to safety
    • Confinement of radioactive material and toxic chemical material
    • Protection against external exposure
    • Prevention of nuclear criticality
  • Provisions for heat removal
  • Postulated initiating events
    • Internal hazards
    • External hazards
  • Instrumentation and control
    • Control rooms and panels
    • Safety related instrumentation and control systems
  • Human factor considerations
  • Safety analysis
    • Safety analysis for operational states
    • Safety analysis for accident conditions
    • Assessment of possible radiological or chemical consequences
  • Emergency preparedness and response
  • Management of radioactive waste
  • Management of gaseous and liquid effluents
  • Other design considerations
    • Design provisions for on-site transfer of radioactive material and hazardous materials
    • Design of the storage area for UF6 cylinders
  • Ageing management considerations
• 6. CONSTRUCTION OF CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
• 7. COMMISSIONING OF CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
• 8. OPERATION OF CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
  • Organization of the operation of conversion facilities and uranium enrichment facilities
  • Staffing of a conversion facility or uranium enrichment facility
  • Qualification and training of personnel
  • Operational documentation
  • Maintenance, calibration, periodic testing and inspection
  • Ageing management
  • Control of modifications
  • Control of nuclear criticality hazards
  • Radiation protection
  • Industrial and chemical safety
  • Overfilling of cylinders
  • Handling of cylinders containing liquid uf6
  • On-site handling of solid uf6
  • Storage of tailings
  • Management of radioactive waste and effluents
  • Emergency preparedness and response
  • Feedback of operating experience
• 9. PREPARATION FOR DECOMMISSIONING OF CONVERSION FACILITIES AND URANIUM ENRICHMENT FACILITIES
• REFERENCES
• Annex I TYPICAL PROCESS ROUTES IN A CONVERSION FACILITY
• Annex II TYPICAL PROCESS ROUTES IN A URANIUM ENRICHMENT FACILITY
• Annex III EXAMPLES OF STRUCTURES, SYSTEMS AND COMPONENTS IMPORTANT TO SAFETY, ASSOCIATED EVENTS AND OPERATIONAL LIMITS AND CONDITIONS FOR CONVERSION FACILITIES
• Annex IV EXAMPLES OF STRUCTURES, SYSTEMS AND COMPONENTS IMPORTANT TO SAFETY, ASSOCIATED EVENTS AND OPERATIONAL LIMITS AND CONDITIONS FOR URANIUM ENRICHMENT FACILITIES
• CONTRIBUTORS TO DRAFTING AND REVIEW