[en] In the criminal case, where three former TEPCO management persons were accused, the judgment of the Tokyo District Court mentioned on the long-term tsunami evaluation of the Headquarters for Earthquake Research Promotion as follows: At the time before the Great Earthquake, the view of this long-term tsunami evaluation was not generally accepted as it should be adopted when considering disaster prevention measures including safety measures for nuclear reactors, as other electric power companies did not adopt the recommendation as it was. This judgment is full of question because there was factual err such as inconsistency with the facts clarified in the trial. This paper mainly describes three problems as follows; (1) the judge denied that TEPCO once approved the tsunami countermeasures based on long-term evaluation, (2) the judge doubted the reliability of the long-term evaluation, and (3) the judge did not recognize that tsunami measures had been prolonged by such measures as laying groundwork, hiding data, or putting pressure on other companies. (A.O.)