Item A-41: Long-Term Seismic Program
DESCRIPTION
Historical Background
In a memorandum[1]dated June 7, 1976, NRR recommended that a study be initiated on the quant
Item A-40: Seismic Design Criteria (former USI)
DESCRIPTION
Structures, systems, and components important to the safety of nuclear power plants are required to withstand the effects of natural phenomena such as earthquakes.
Item A-39: Determination of Safety Relief Valve Pool Dynamic Loads and Temperature Limits (former USI)
DESCRIPTION
Operation of BWR primary system pressure relief valves can result in hydrodynamic loads on the suppression pool retaining structures or those structures located within the pool.
Item A-38: Tornado Missiles
DESCRIPTION
Historical Background
The AEC first established missile-protection requirements in 1967.
Item A-37: Turbine Missiles
DESCRIPTION
Historical Background
The staff has long recognized that the steam turbine, part of the turbinegenerator set, has the potential to generate massive, energetic missiles if a t
Item A-36: Control of Heavy Loads Near Spent Fuel (former USI)
DESCRIPTION
At all nuclear plants, overhead cranes are used to lift heavy objects in the vicinity of spent fuel. If a heavy object such as a spent fuel shipping cask or shielding block were to f
Item A-35: Adequacy of Offsite Power Systems
DESCRIPTION
This issue was raised in NUREG-0371[1]following a series of events at operating plants that involved the offsite power sys
Item A-34: Instruments for Monitoring Radiation and Process Variables During Accidents
DESCRIPTION
This NUREG-0371[1]item was initiated in order to develop criteria and guidelines to be used by applicants,
Item A-33: NEPA Review of Accident Risks
DESCRIPTION
In 1971, the AEC determined that, consistent with NEPA, the environmental assessments of requests for construction permits and operating licenses should include consideration of the possible impacts from accidents
Item A-32: Missile Effects
DESCRIPTION
Historical Background
This NUREG-0371[1]item addresses three types of missiles for which impact effects on nuclear power plant structures, system