{"id":2218,"date":"2021-07-29T08:28:31","date_gmt":"2021-07-29T08:28:31","guid":{"rendered":"https:\/\/wldstainless.com\/?p=2218"},"modified":"2021-07-29T08:34:18","modified_gmt":"2021-07-29T08:34:18","slug":"why-is-duplex-stainless-steel-used-in-nuclear-power-plant-cooling-water-systems","status":"publish","type":"post","link":"https:\/\/wldstainless.com\/ja\/why-is-duplex-stainless-steel-used-in-nuclear-power-plant-cooling-water-systems\/","title":{"rendered":"\u539f\u5b50\u529b\u767a\u96fb\u6240\u306e\u51b7\u5374\u6c34\u30b7\u30b9\u30c6\u30e0\u306b\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u304c\u4f7f\u7528\u3055\u308c\u308b\u306e\u306f\u306a\u305c\u3067\u3059\u304b?"},"content":{"rendered":"<p>\u539f\u5b50\u529b\u306f\u30af\u30ea\u30fc\u30f3\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u6e90\u3068\u3057\u3066\u3001\u4e16\u754c\u4e2d\u3067\u70ad\u7d20\u6392\u51fa\u91cf\u306e\u524a\u6e1b\u306b\u5927\u304d\u304f\u8ca2\u732e\u3057\u3066\u3044\u307e\u3059\u3002\u51b7\u5374\u6c34\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u539f\u5b50\u529b\u767a\u96fb\u6240\u306e\u5b89\u5168\u306a\u904b\u8ee2\u306e\u9375\u3067\u3059\u3002\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u76f4\u5f84\u3068\u30b5\u30a4\u30ba\u306e\u6570\u5343\u30d5\u30a3\u30fc\u30c8\u306e\u30d1\u30a4\u30d7\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u30d7\u30e9\u30f3\u30c8\u6a5f\u5668\u306e\u51b7\u5374\u306b\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6c34\u4f9b\u7d66\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u975e\u5b89\u5168\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30d7\u30e9\u30f3\u30c8\u3092\u51b7\u5374\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u51b7\u5374\u6c34\u3092\u4f9b\u7d66\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u3001\u5b89\u5168\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u7dca\u6025\u6642\u306b\u539f\u5b50\u7089\u3092\u5236\u5fa1\u3057\u3066\u5b89\u5168\u306b\u505c\u6b62\u3059\u308b\u306e\u306b\u5341\u5206\u306a\u51b7\u5374\u6c34\u3092\u4f9b\u7d66\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u30d1\u30a4\u30d7\u306e\u6750\u8cea\u306f\u3001\u6a5f\u5668\u306e\u8010\u7528\u5e74\u6570\u5168\u4f53\u306b\u308f\u305f\u3063\u3066\u51b7\u5374\u6c34\u306e\u8150\u98df\u306b\u8010\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30e9\u30f3\u30c8\u306e\u5834\u6240\u306b\u5fdc\u3058\u3066\u3001\u51b7\u5374\u6c34\u306e\u7a2e\u985e\u306f\u6bd4\u8f03\u7684\u304d\u308c\u3044\u306a\u771f\u6c34\u304b\u3089\u6c5a\u67d3\u3055\u308c\u305f\u6d77\u6c34\u307e\u3067\u3055\u307e\u3056\u307e\u3067\u3059\u3002\u7d4c\u9a13\u4e0a\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u53e4\u304f\u306a\u308b\u3068\u3001\u3055\u307e\u3056\u307e\u306a\u8150\u98df\u306e\u554f\u984c\u3084\u3055\u307e\u3056\u307e\u306a\u7a0b\u5ea6\u306e\u8150\u98df\u304c\u767a\u751f\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u640d\u50b7\u3057\u3066\u5fc5\u8981\u306a\u51b7\u5374\u6c34\u306e\u4f9b\u7d66\u304c\u59a8\u3052\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u51b7\u5374\u6c34\u914d\u7ba1\u306e\u554f\u984c\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u6750\u6599\u3068\u51b7\u5374\u6c34\u3068\u306e\u76f8\u4e92\u4f5c\u7528\u306b\u95a2\u4fc2\u3057\u3066\u3044\u307e\u3059\u3002\u30b7\u30b9\u30c6\u30e0\u306e\u6c5a\u308c (\u8a70\u307e\u308a) \u306b\u3088\u308b\u6f0f\u308c\u3068\u8150\u98df\u304c\u6700\u3082\u4e00\u822c\u7684\u306a\u554f\u984c\u3067\u3001\u5806\u7a4d\u7269\u306e\u84c4\u7a4d\u3001\u6d77\u6d0b\u751f\u7269\u306e\u4ed8\u7740 (\u751f\u7269\u4ed8\u7740)\u3001\u8150\u98df\u751f\u6210\u7269\u306e\u84c4\u7a4d\u3001\u7570\u7269\u306e\u8a70\u307e\u308a\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u6f0f\u308c\u306f\u901a\u5e38\u3001\u5fae\u751f\u7269\u8150\u98df (MIC) \u306b\u3088\u3063\u3066\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6c34\u4e2d\u306e\u7279\u5b9a\u306e\u5fae\u751f\u7269\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u975e\u5e38\u306b\u8150\u98df\u6027\u306e\u9ad8\u3044\u8150\u98df\u3067\u3059\u3002\u3053\u306e\u30bf\u30a4\u30d7\u306e\u8150\u98df\u306f\u3001\u70ad\u7d20\u92fc\u3068\u4f4e\u5408\u91d1\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3067\u983b\u7e41\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u65b0\u3057\u3044\u7d66\u6c34\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u3084\u3001\u65e2\u5b58\u306e\u70ad\u7d20\u92fc\u30b7\u30b9\u30c6\u30e0\u306e\u4fee\u7406\u307e\u305f\u306f\u4ea4\u63db\u306b\u9577\u3044\u9593\u5b9f\u884c\u53ef\u80fd\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u8003\u3048\u3089\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u914d\u7ba1\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001304L\u3001316L\u3001\u307e\u305f\u306f6%-Mo\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3067\u3059\u3002316L\u30686%-Mo\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u4fa1\u683c\u306b\u5927\u304d\u306a\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002\u51b7\u5374\u5a92\u4f53\u304c\u672a\u51e6\u7406\u306e\u6c34\u3067\u3042\u308b\u5834\u5408\u3001\u3053\u308c\u306f\u975e\u5e38\u306b\u8150\u98df\u6027\u304c\u9ad8\u304f\u3001\u5fae\u751f\u7269\u8150\u98df\u306e\u30ea\u30b9\u30af\u304c\u3042\u308b\u305f\u3081\u3001304L\u3068316L\u306f\u9069\u5207\u306a\u9078\u629e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u7d50\u679c\u3001\u539f\u5b50\u529b\u767a\u96fb\u6240\u306f6%-Mo\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u304b\u3001\u70ad\u7d20\u92fc\u30b7\u30b9\u30c6\u30e0\u306e\u9ad8\u3044\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30b3\u30b9\u30c8\u3092\u53d7\u3051\u5165\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u4e00\u90e8\u306e\u539f\u5b50\u529b\u767a\u96fb\u6240\u3067\u306f\u3001\u521d\u671f\u30b3\u30b9\u30c8\u304c\u4f4e\u3044\u305f\u3081\u3001\u4f9d\u7136\u3068\u3057\u3066\u70ad\u7d20\u92fc\u30e9\u30a4\u30cb\u30f3\u30b0\u30d1\u30a4\u30d7\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002ASTM A240\u306b\u3088\u308b\u3068\u3001\u5de5\u696d\u7528\u7d66\u6c34\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u4ee5\u4e0b\u306e\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3067\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<tbody>\n<tr>\n<td width=\"106\">\u6210\u7e3e<\/td>\n<td width=\"106\">\u56fd\u9023<\/td>\n<td width=\"106\">\uff23<\/td>\n<td width=\"106\">\u3044\u3044\u3048<\/td>\n<td width=\"106\">Cr<\/td>\n<td width=\"106\">\u30cb<\/td>\n<td width=\"106\">\u30e2<\/td>\n<td width=\"106\">\u9285<\/td>\n<\/tr>\n<tr>\n<td width=\"106\"><a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/304-304l-stainless-steel\/\">304L<\/a><\/td>\n<td width=\"106\">S30403<\/td>\n<td width=\"106\">0.03<\/td>\n<td width=\"106\">\/<\/td>\n<td width=\"106\">18.0-20.0<\/td>\n<td width=\"106\">8.0-12.0<\/td>\n<td width=\"106\">\/<\/td>\n<td width=\"106\">\/<\/td>\n<\/tr>\n<tr>\n<td width=\"106\"><a href=\"https:\/\/wldstainless.com\/materials\/austenitic-stainless-steel\/316-316l-stainless-steel\/\">316L<\/a><\/td>\n<td width=\"106\">S31603<\/td>\n<td width=\"106\">0.03<\/td>\n<td width=\"106\">\/<\/td>\n<td width=\"106\">16.0-18.0<\/td>\n<td width=\"106\">10.0-14.0<\/td>\n<td width=\"106\">2.0-3.0<\/td>\n<td width=\"106\">\/<\/td>\n<\/tr>\n<tr>\n<td width=\"106\">6%Mo<\/td>\n<td width=\"106\">N08367<\/td>\n<td width=\"106\">0.03<\/td>\n<td width=\"106\">0.18-0.25<\/td>\n<td width=\"106\">20.0-22.0<\/td>\n<td width=\"106\">23.0-25.0<\/td>\n<td width=\"106\">6.0-7.0<\/td>\n<td width=\"106\">0.75<\/td>\n<\/tr>\n<tr>\n<td width=\"106\"><a href=\"https:\/\/wldstainless.com\/materials\/duplex-stainless-steel\/alloy-2205-stainless-steel\/\">2205<\/a><\/td>\n<td width=\"106\">S32205<\/td>\n<td width=\"106\">0.03<\/td>\n<td width=\"106\">0.14-0.2<\/td>\n<td width=\"106\">22.0-23.0<\/td>\n<td width=\"106\">4.5-6.5<\/td>\n<td width=\"106\">3.0-3.5<\/td>\n<td width=\"106\">\/<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>2205 \u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u512a\u308c\u305f\u9078\u629e\u3067\u3042\u308b\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u307e\u3057\u305f\u3002\u30b5\u30a6\u30b9\u30ab\u30ed\u30e9\u30a4\u30ca\u5dde\u306b\u3042\u308b\u30c7\u30e5\u30fc\u30af \u30d1\u30ef\u30fc\u793e\u306e\u30ab\u30c8\u30fc\u30d0\u539f\u5b50\u529b\u767a\u96fb\u6240\u306f\u3001\u30b7\u30b9\u30c6\u30e0\u306b 2205 (UNS S32205) \u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3092\u4f7f\u7528\u3059\u308b\u6700\u521d\u306e\u539f\u5b50\u529b\u767a\u96fb\u6240\u3067\u3059\u3002\u3053\u306e\u30b0\u30ec\u30fc\u30c9\u306b\u306f\u7d04 3.2% \u306e\u30e2\u30ea\u30d6\u30c7\u30f3\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001304L \u304a\u3088\u3073 316L \u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u3088\u308a\u3082\u8010\u8150\u98df\u6027\u304c\u5411\u4e0a\u3057\u3001\u5fae\u751f\u7269\u306b\u3088\u308b\u8010\u8150\u98df\u6027\u304c\u5927\u5e45\u306b\u5411\u4e0a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e3b\u51dd\u7e2e\u5668\u306e\u51b7\u5374\u5854\u306b\u4f9b\u7d66\u6c34\u3092\u9001\u308b\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306e\u5730\u4e0a\u90e8\u5206\u306e\u70ad\u7d20\u92fc\u30e9\u30a4\u30cb\u30f3\u30b0\u914d\u7ba1\u3092\u30012205 \u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u914d\u7ba1\u306b\u4ea4\u63db\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u65b0\u3057\u3044\u4ee3\u66ff\u54c1 <a href=\"https:\/\/wldstainless.com\/materials\/duplex-stainless-steel\/alloy-2205-stainless-steel\/\">2205<\/a> 2002\u5e74\u306b\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u7ba1\u304c\u8a2d\u7f6e\u3055\u308c\u307e\u3057\u305f\u3002\u30d1\u30a4\u30d7\u306e\u9577\u3055\u306f60\u30e1\u30fc\u30c8\u30eb\u3001\u76f4\u5f84\u306f76.2cm\u300191.4cm\u3001\u30d1\u30a4\u30d7\u306e\u58c1\u306e\u539a\u3055\u306f0.95cm\u3067\u3059\u3002\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u767a\u96fb\u6240\u306e\u914d\u7ba1\u30b7\u30b9\u30c6\u30e0\u306e\u5b89\u5168\u4f7f\u7528\u306b\u95a2\u3059\u308b\u7ba1\u7406\u30b3\u30fc\u30c9\u306e1\u3064\u3067\u3042\u308a\u3001\u4e16\u754c\u4e2d\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308bASME B31.1 Power piping\u306b\u5f93\u3063\u3066\u6307\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002500\u65e5\u9593\u306e\u4f7f\u7528\u5f8c\u3001\u30b7\u30b9\u30c6\u30e0\u306f\u5fb9\u5e95\u7684\u306b\u691c\u67fb\u3055\u308c\u307e\u3057\u305f\u3002\u691c\u67fb\u4e2d\u306b\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3084\u8150\u98df\u306f\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u30022205\u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306f\u975e\u5e38\u306b\u512a\u308c\u305f\u6027\u80fd\u3092\u767a\u63ee\u3057\u307e\u3057\u305f\u30022205\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u914d\u7ba1\u306f\u3001\u8a2d\u7f6e\u4ee5\u676510\u5e74\u4ee5\u4e0a\u306b\u308f\u305f\u3063\u3066\u826f\u597d\u306a\u6027\u80fd\u3092\u767a\u63ee\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7d4c\u9a13\u306b\u57fa\u3065\u3044\u3066\u3001\u30c7\u30e5\u30fc\u30af\u30d1\u30ef\u30fc\u306f <a href=\"https:\/\/wldstainless.com\/materials\/duplex-stainless-steel\/alloy-2205-stainless-steel\/\">2205 \u4e8c\u76f8\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u7ba1<\/a> \u30b7\u30b9\u30c6\u30e0\u306e\u4ed6\u306e\u90e8\u5206\u3067\u3082\u3002<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-2221\" src=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2021\/07\/Pipe-internal.png\" alt=\"\" width=\"426\" height=\"256\" srcset=\"https:\/\/wldstainless.com\/wp-content\/uploads\/2021\/07\/Pipe-internal.png 426w, https:\/\/wldstainless.com\/wp-content\/uploads\/2021\/07\/Pipe-internal-300x180.png 300w\" sizes=\"(max-width: 426px) 100vw, 426px\" \/><\/p>\n<p><em>500\u65e5\u9593\u4f7f\u7528\u5f8c\u306e2205\u30d1\u30a4\u30d7\u306e\u5185\u90e8\u3002<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>\u539f\u5b50\u529b\u767a\u96fb\u6240\u306e\u7d66\u6c34\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u8005\u306b\u306f\u3001\u8010\u8150\u98df\u6027\u51b7\u5374\u6c34\u914d\u7ba1\u6750\u6599\u306e\u9078\u629e\u306b\u95a2\u3057\u3066\u3001\u3082\u3046 1 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