Pkmmum Identification and Ranlcing Tables (PIRT) have beem developad for start-up transient for SBWR. The infomation used for PIRT came fimn RAMONA4B and TRACG analyses ofthe transient and from related small scale tests. The transient was divided into four distinct phases, namely, Subcooled Care k t-u p , Subcooled Chimney, SBWR system was divided into tencomponents Atotai of33 distinct phenomena amongthe camp0nmt.s were identified. The Phase Ihas 28 rankedphewmenawith 17 low .6 d u m and 5 high ranking. Thephase IIhas 39 ranked phenomena with 18 low, 13 medium aad 8 high ranking. The Phase III has 47 ranked phenomena with 22 low, 10 medium and 15 high ranking. The Phase IV has 46 ranked phenomena with 16 low, 12 medium and 18 high ranking. saturated chhncy, and Power Ascension. The-t criterion selected was h4inimum critical Power Ratio. The

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Abstract. Considering the actual structure of special vehicles and security factors, three road test for special vehicle's handling and stability and eight index were used in this paper. The subjective weighting method and the objective weighting were respectively used to evaluate the special vehicle ' s handling and stability based on the experiments ' results. The combination method of rank correlation coefficient was used to fuse the subjective and objective results. The final result can reflect the subjective feel and the objective truth.