Abstract: The stress intensity factor solutions, including twenty different solutions,for a surface crack in a plate subjected to uniform tension are reviewed and compared. These solutions have been developed over the past 20 years using approximate analytical methods, experimental mthods and engineering estimates. The present paper analyzes and assesses the accuracy and standard deviation of various solutions by correlating experiment data on surface crack tension specimens using SC OD technique, which is developed by authors' previous works. In addition, the range and convenience of application are also considered in the paper. Those solutions considered are ranked in order. The preferable calculation methods of K1 recommended in present paper may be an available reference for working out the standard of CVDA. (Pressure Vessel Defect Assessment Standard of China)