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.               .     NFPA 18                    .     NFPA 18           NFPA 18             .      T/C         .ABSTRACTA current standard exist only on the surface tension in the current domestic wetting agent technology standards, so it isdifficult to the performance evaluation of the wetting agent through the standard. So this study presents the optimized per-formance evaluation methods by scale model experimental equipment in order to present techniques for performance eval-uation of wetting agents. The purpose of this study is to investigate validity of experimental results of the self-designedscale model experiment equipment by a comparative analysis of experimental results of the NFPA 18 experiment and theexperiment using the self-designed scale model experiment equipment. As a result of a comparative analysis of experi-mental results of the NFPA 18 experiment that evaluate only the permeation performance on the contton and the experi-ment using the self-designed scale model experiment equipment that evaluate the permeation performance and fireextinguishing performance on wood flour, the discrimination of the permeation performance was confirmed in both theNFPA 18 experiment and the self-designed scale model experiment equipment. And a result of self-designed experimentequipment have clear discriminatory more than NFPA 18 by internal temperature measurement using the thermocouples.Keywords : Deep-seated fire, Wetting agent, NFPA 18, Self-designed experiment equipment, Scale model

Validity Analysis of Scale Model Experiment for Wetting Agent Performance Evaluation