T8133：2007目次ページ1適用範囲·································································································································································12引用規格·································································································································································13用語及び定義·························································································································································14種類·········································································································································································35性能·········································································································································································45.1衝撃吸収性··························································································································································45.2耐貫通性······························································································································································45.3保持装置の強さ··················································································································································45.4保持性（ロールオフ）······································································································································45.5周辺視野······························································································································································45.6シールド開放角（シールドを装着したヘルメットに適用）·······································································75.7材料······································································································································································86構造一般··············································