Atmospheric diffusion for control room habitability assessments

Technical Report · Sun May 01 04:00:00 EDT 1988

OSTI ID:5123768

Ramsdell, J V

This report presents the results of an evaluation of the procedure used by the NRC staff to assess nuclear reactor control room habitability. The evaluation is based on experimental data collected in seven sets of field experiments at nuclear power plant sites. The procedure is generally conservative, but the models in the procedure show little skill in predicting the effects of different atmospheric conditions on maximum effluent concentrations in building wakes. Two alternative building-wake models have been developed using the experimental data. The first model differs significantly from current models in the manner in which wind speed enters the model. The second model is an extension of the first model that has more desirable asymptotic behavior and includes consideration of the mitigating effect of plume rise on concentrations in building wakes. A set of non-mathematical guidelines is offered for use in evaluating potential control room air intake locations.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5123768
• Report Number(s): NUREG/CR-5055; PNL-6391; ON: TI88010552
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220400* -- Nuclear Reactor Technology-- Control Systems
220502 -- Nuclear Reactor Technology-- Environmental Aspects-- Radioactive Effluents
AC SYSTEMS
AIR QUALITY
CONTROL ROOMS
ENERGY SYSTEMS
ENVIRONMENTAL QUALITY
EVALUATION
HUMAN FACTORS
HVAC SYSTEMS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
POWER PLANTS
POWER SYSTEMS
THERMAL POWER PLANTS