Fluence Monitoring Program

OBJECTIVES

• Minimize neutron fluence at hot spots
• Monitor power history for impact of reactor components
• Scope projected core designs and operating strategies for potential neutron fluence impacts

• Model actual flaw locations (Critical flaws: shroud welds, RPV welds, nozzle welds, baffle plate welds)
• Support outage inspections with accurate neutron fluence or flux calculations (Account for operating strategy impacts and avoid interpolations in the field)
• Provide cycle reports with update neutron fluence at critical locations

• Collect historical operating data for completed cycles
• Revise fluence models for new/replaced components (shroud repair tie rods, jet pumps, weld overlays, etc.)
• Implement evolving modeling improvements efficiently

BENEFITS

• Avoid interpolations based on projected neutron fluence calculations

• Maintain knowledge base of plant data (Retrieval / re-creation of data is costly)
• Maintain active QA program (Opening / closing QA projects for "simple tasks" is costly)

OPTIONS