Ventilation systems analysis during tornado conditions. Progress report, October 1, 1976--April 30, 1977. [TVENT]

Technical Report · Sat Oct 01 04:00:00 EDT 1977

DOI:https://doi.org/10.2172/5304533· OSTI ID:5304533

Gregory, W. S.; Andrae, R. W.; Duerre, K. H.; Dove, R. C.

A computer code, TVENT, has been developed to predict the tornado-induced pressures and flows within an arbitrary nuclear facility ventilation system. Operational experience with TVENT in analyzing an ERDA facility has resulted in code modifications. Several architectural firms have agreed to use TVENT to analyze their designs. They will provide us with comments on the code and user's manual to make them more useful. Our investigation of the feasibility of scale model analysis to provide additional comparative data and preliminary results is presented. Preliminary calculations indicate that a distorted model would be necessary. Distortion of the Reynolds number relating the model to the prototype appears to be the most practical approach. The Idaho Chemical Processing Plant (ICPP) atmospheric protection system was analyzed using TVENT, and the results are presented. They were found to be in close agreement with the real system under steady-state conditions. For a tornado at the exhaust stack, TVENT predicted a flow increase of 70 percent through the system's HEPA filters.

• Research Organization: Los Alamos Scientific Lab., N.Mex. (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5304533
• Report Number(s): LA-6999-PR
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420202* -- Engineering-- Protective Structures & Equipment
COMPUTER CODES
DYNAMIC LOADS
FUEL REPROCESSING PLANTS
IDAHO CHEMICAL PROCESSING PLANT
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
PERFORMANCE
PRESSURIZING
STORMS
T CODES
TORNADOES
US AEC
US ERDA
US ORGANIZATIONS
VENTILATION
WIND