A summary of the latest results of the Bettis experimental program and a review and summary of the studies performed by other laboratories are reported. These latest results are the basis for new or revised procedures to be applied to reactor design. A tabulation of all available burnout heat flux data for water under forced circulation conditions and at pressures above 500 psia is presented. This tabulation not only includes all data obtained at Bettis through September 1957, but also all data generally available from other laboratories. These data have been compiled for the convenience of workers in this field. The burnout heat flux, mass velocity, inlet temperature, exit enthalpy, channel geometry, pressure, and other pertinent information are presented for each burnout point. The experimental techniques by which the Bettis burnout data were obtained are described in detail. Descriptions of the Bettis high-pressure loop facilities, test specimens, and method of testing; a detailed sample data reduction calculation; and an analysis of experimental errors are included. The experimental techniques employed by other laboratories have been out-lined. The qualitative effects of mass velocity, inlet temperature, enthalpy at the burnout point, channel geometry, and pressure on burnout heat flux are described. Existing burnoutmore » heat flux correlations are discussed, and it is concluded that none provides a completely satisfactory fit of the available data over the entire range of variables covered by the experimental work. Therefore, a new correlation, applicable to pressures near 2000 psia, has been developed and is presented. (auth)« less