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The ACRS raised a concern that there is a need to develop criteria for vibration monitoring systems which could provide early warning of excessive vibration inside the reactor vessel.
Practice in health impact assessments at the time of identification of this issue was to convert radiation exposure estimates into estimates of health effects, such as cancer deaths,
Present NRC actions taken in response to a serious incident are directed from an Incident Response Center (IRC).
Offsite power system frequency decay, depending on the rate of decay, could provide an electrical brake on the reactor coolant pump motors that could slow the pumps faster than the a
Following a plant transient or accident, provisions are required for long-term decay heat removal. Redundancy of components is required as necessary to assure that a failure in the RHR system will not impair the a
This NUREG-0471[1]item, as presently formulated, involves the conduct of analytical and experimental work to determine whet
According to NUREG-0471,[1]the nature of this problem is described as follows:
The control room area ventilation systems and control building layout and structures are reviewed to assure that plant operators are adequately protected against the effects of accid
This NUREG-0471[1]task is to develop and confirm a model for the iodine spiking phenomenon, in which the iodine concentrati
Decommissioning is defined as the orderly retirement of a nuclear facility from service and the safe disposition of the remaining radioactivity.
