This section contains all Task Action Plan items documented in NUREG-0371 [1]and NUREG-0471 [2]as well as all USIs documented in other NRC publications. Items A-1 through A-41 are listed in NUREG-0371[3]
and all items with prefixes "B," "C," and "D" are listed in NUREG-0471. [4]USIs identified after publication of
NUREG-0371 [5]and NUREG-0471 [6]are listed in the following documents: NUREG-0510 [7](A-42 through
A-44); NUREG-0705 [8]( A-45 through A-48); and NUREG-1090 [9](A-49). A total of 142 items are listed in this section.
The Generic Issues Tracking System (GITS) Report [10]issued on December 17, 1981, provided a status report on the majority of the 142 items as well as their classification into four categories: Environmental, Licensing
Improvement, Safety, and USI. The safety issues identified in the GITS Report [11]provided the basis for all prioritization work contained in this section. The lead responsibility and a summary of the findings for each item listed in this section can be found in Table II of the Introduction.
[1] NUREG-0371, "Task Action Plans for Generic Activities (Category A)," U.S. Nuclear Regulatory Commission, November 1978.
[2] NUREG-0471, "Generic Task Problem Descriptions (Categories B, C, and D)," U.S. Nuclear Regulatory Commission, June 1978.
[3] NUREG-0371, "Task Action Plans for Generic Activities (Category A)," U.S. Nuclear Regulatory Commission, November 1978.
[4] NUREG-0471, "Generic Task Problem Descriptions (Categories B, C, and D)," U.S. Nuclear Regulatory Commission, June 1978.
[5] NUREG-0371, "Task Action Plans for Generic Activities (Category A)," U.S. Nuclear Regulatory Commission, November 1978.
[6] NUREG-0471, "Generic Task Problem Descriptions (Categories B, C, and D)," U.S. Nuclear Regulatory Commission, June 1978.
[7] NUREG-0510, "Identification of Unresolved Safety Issues Relating to Nuclear Power Plants," U.S. Nuclear Regulatory Commission, January 1979.
[8] NUREG-0705, "Identification of New Unresolved Safety Issues Relating to Nuclear Power Plant Stations," U.S. Nuclear Regulatory Commission, March 1981.
[9] NUREG-1090, "U.S. Nuclear Regulatory Commission 1983 Annual Report," June 1984.
[10] "Generic Issues Tracking System Report," U.S. Nuclear Regulatory Commission, December 17, 1981.
[11] "Generic Issues Tracking System Report," U.S. Nuclear Regulatory Commission, December 17, 1981.
- Item A-1: Water Hammer (former USI)
- Item A-2: Asymmetric Blowdown Loads on Reactor Primary Coolant Systems (former USI)
- Item A-3: Westinghouse Steam Generator Tube Integrity (former USI)
- Item A-4: CE Steam Generator Tube Integrity (former USI)
- Item A-7: Mark I Long-Term Program (former USI)
- Item A-6: Mark I Short-Term Program (former USI)
- Item A-7: Mark I Long-Term Program (former USI)
- Item A-8: Mark II Containment Pool Dynamic Loads Long-Term Program (former USI)
- Item A-9: ATWS (former USI)
- Item A-10: BWR Feedwater Nozzle Cracking (former USI)
- Item A-11: Reactor Vessel Materials Toughness (former USI)
- Item A-12: Fracture Toughness of Steam Generator and Reactor Coolant Pump Supports (former USI)
- Item A-13: Snubber Operability Assurance
- Item A-14: Flaw Detection
- Item A-15: Primary Coolant System Decontamination and Steam Generator Chemical Cleaning
- Item A-16: Steam Effects on BWR Core Spray Distribution
- Item A-17: Systems Interactions in Nuclear Power Plants (former USI)
- Item A-18: Pipe Rupture Design Criteria
- Item A-19: Digital Computer Protection System
- Item A-20: Impacts of the Coal Fuel Cycle
- Item A-21: Main Steamline Break Inside Containment - Evaluation of Environmental Conditions for Equipment Qualification
- Item A-22: PWR Main Steamline Break - Core, Reactor Vessel and Containment Building Response
- Item A-23: Containment Leak Testing
- Item A-24: Qualification of Class 1E Safety-Related Equipment (former USI)
- Item A-25: Non-Safety Loads on Class 1E Power Sources
- Item A-27: Reload Applications
- Item A-28: Increase in Spent Fuel Pool Storage Capacity
- Item A-29: Nuclear Power Plant Design for the Reduction of Vulnerability to Industrial Sabotage
- Item A-30: Adequacy of Safety-Related DC Power Supplies
- Item A-31: RHR Shutdown Requirements (former USI)
- Item A-32: Missile Effects
- Item A-33: NEPA Review of Accident Risks
- Item A-34: Instruments for Monitoring Radiation and Process Variables During Accidents
- Item A-35: Adequacy of Offsite Power Systems
- Item A-36: Control of Heavy Loads Near Spent Fuel (former USI)
- Item A-37: Turbine Missiles
- Item A-38: Tornado Missiles
- Item A-39: Determination of Safety Relief Valve Pool Dynamic Loads and Temperature Limits (former USI)
- Item A-40: Seismic Design Criteria (former USI)
- Item A-41: Long-Term Seismic Program
- Item A-42: Pipe Cracks in Boiling Water Reactors (former USI)
- Item A-43: Containment Emergency Sump Performance (former USI)
- Item A-44: Station Blackout (former USI)
- Item A-45: Shutdown Decay Heat Removal Requirements (former USI)
- Item A-46: Seismic Qualification of Equipment in Operating Plants (former USI)
- Item A-47: Safety Implications of Control Systems (former USI)
- Item A-48: Hydrogen Control Measures and Effects of Hydrogen Burns on Safety Equipment
- Item A-49: Pressurized Thermal Shock (former USI)
- Item B-1: Environmental Technical Specifications
- Item B-3: Event Categorization
- Item B-4: ECCS Reliability
- Item B-5: Ductility of Two-Way Slabs and Shells and Buckling Behavior of Steel Containments
- Item B-6: Loads, Load Combinations, Stress Limits
- Item B-7: Secondary Accident Consequence Modeling
- Item B-8: Locking Out of ECCS Power Operated Valves
- Item B-9: Electrical Cable Penetrations of Containment
- Item B-10: Behavior of BWR Mark III Containments
- Item B-11: Subcompartment Standard Problems
- Item B-12: Containment Cooling Requirements (Non-LOCA)
- Item B-13: Marviken Test Data Evaluation
- Item B-14: Study of Hydrogen Mixing Capability in Containment Post-LOCA
- Item B-15: CONTEMPT Computer Code Maintenance
- Item B-16: Protection Against Postulated Piping Failures in Fluid Systems Outside Containment
- Item B-17: Criteria for Safety-Related Operator Actions
- Item B-18: Vortex Suppression Requirements for Containment Sumps
- Item B-19: Thermal-Hydraulic Stability
- Item B-20: Standard Problem Analysis
- Item B-21: Core Physics
- Item B-22: LWR Fuel
- Item B-23: LMFBR Fuel
- Item B-121: Seismic Qualification of Electrical and Mechanical Equipment
- Item B-25: Piping Benchmark Problems
- Item B-26: Structural Integrity of Containment Penetrations
- Item B-27: Implementation and Use of Subsection NF
- Item B-28: Radionuclide/Sediment Transport Program
- Item B-29: Effectiveness of Ultimate Heat Sinks
- Item B-30: Design Basis Floods and Probability
- Item B-31: Dam Failure Model
- Item B-32: Ice Effects on Safety-Related Water Supplies
- Item B-33: Dose Assessment Methodology
- Item B-34: Occupational Radiation Exposure Reduction
- Item B-35: Confirmation of Appendix I Models for Calculations of Releases of Radioactive Materials in Gaseous and Liquid Effluents from Light Water Cooled Power Reactors
- Item B-36: Develop Design, Testing, and Maintenance Criteria for Atmosphere Cleanup System Air Filtration and Adsorption Units for Engineer
- Item B-37: Chemical Discharges to Receiving Waters
- Item B-38: Reconnaissance Level Investigations
- Item B-142: Transmission Lines
- Item B-40: Effects of Power Plant Entrainment on Plankton
- Item B-41: Impacts on Fisheries
- Item B-42: Socioeconomic Environmental Impacts
- Item B-43: Value of Aerial Photographs for Site Evaluation
- Item B-44: Forecasts of Generating Costs of Coal and Nuclear Plants
- Item B-45: Need for Power - Energy Conservation
- Item B-46: Cost of Alternatives in Environmental Design
- Item B-47: Inservice Inspection of Supports-Classes 1, 2, 3, and MC Components
- Item B-48: BWR Control Rod Drive Mechanical Failures
- Item B-49: Inservice Inspection Criteria and Corrosion Prevention Criteria for Containments
- Item B-50: Post-Operating Basis Earthquake Inspection
- Item B-51: Assessment of Inelastic Analysis Techniques for Equipment and Components
- Item B-52: Fuel Assembly Seismic and LOCA Responses
- Item B-53: Load Break Switch
- Item B-54: Ice Condenser Containments
- Item B-55: Improved Reliability of Target Rock Safety Relief Valves
- Item B-56: Diesel Reliability
- Item B-57: Station Blackout
- Item B-58: Passive Mechanical Failures
- Item B-59: (N-1) Loop Operation in BWRs and PWRs
- Item B-60: Loose Parts Monitoring Systems
- Item B-61: Allowable ECCS Equipment Outage Periods
- Item B-62: Reexamination of Technical Bases for Establishing SLs, LSSSs, and Reactor Protection System Trip Functions
- Item B-63: Isolation of Low Pressure Systems Connected to the Reactor Coolant Pressure Boundary
- Item B-64: Decommissioning of Reactors
- Item B-65: Iodine Spiking
- Item B-66: Control Room Infiltration Measurements
- Item B-67: Effluent and Process Monitoring Instrumentation
- Item B-68: Pump Overspeed During LOCA
- Item B-69: ECCS Leakage Ex-Containment
- Item B-70: Power Grid Frequency Degradation and Effect on Primary Coolant Pumps
- Item B-71: Incident Response
- Item B-72: Health Effects and Life Shortening from Uranium and Coal Fuel Cycles
- Item B-73: Monitoring for Excessive Vibration Inside the Reactor Pressure Vessel
- Item C-1: Assurance of Continuous Long-Term Capability of Hermetic Seals on Instrumentation and Electrical Equipment
- Item C-2: Study of Containment Depressurization by Inadvertent Spray Operation to Determine Adequacy of Containment External Design Pressu
- Item C-3: Insulation Usage Within Containment
- Item C-4: Statistical Methods for ECCS Analysis
- Item C-5: Decay Heat Update
- Item C-6: LOCA Heat Sources
- Item C-7: PWR System Piping
- Item C-8: Main Steam Line Leakage Control Systems
- Item C-9: RHR Heat Exchanger Tube Failures
- Item C-10: Effective Operation of Containment Sprays in a LOCA
- Item C-11: Assessment of Failure and Reliability of Pumps and Valves
- Item C-12: Primary System Vibration Assessment
- Item C-13: Non-Random Failures
- Item C-14: Storm Surge Model for Coastal Sites
- Item C-15: NUREG Report for Liquid Tank Failure Analysis
- Item C-16: Assessment of Agricultural Land in Relation to Power Plant Siting and Cooling System Selection
- Item C-17: Interim Acceptance Criteria for Solidification Agents for Radioactive Solid Wastes
- Item D-1: Advisability of a Seismic Scram
- Item D-2: Emergency Core Cooling System Capability for Future Plants
- Item D-3: Control Rod Drop Accident