{"id":57073,"date":"2026-09-30T15:25:38","date_gmt":"2026-09-30T15:25:38","guid":{"rendered":"https:\/\/zobai.com\/?p=57073"},"modified":"2026-09-30T16:49:11","modified_gmt":"2026-09-30T16:49:11","slug":"boiler-safety-valve-set-pressure-staging-and-capacity-allocation","status":"publish","type":"post","link":"https:\/\/zobai.com\/ru\/blog\/boiler-safety-valve-set-pressure-staging-and-capacity-allocation\/","title":{"rendered":"\u0421\u0442\u0443\u043f\u0435\u043d\u0447\u0430\u0442\u0430\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u044f \u0438 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 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\u0430\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0441\u0443\u043c\u043c\u0430 \u043a\u0430\u0442\u0430\u043b\u043e\u0436\u043d\u044b\u0445 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u044b\u0445 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0435\u0439 \u043d\u0435 \u0434\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442, \u0447\u0442\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u0432\u043a\u043b\u0430\u0434\u044b \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u044b \u0434\u043b\u044f \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0441\u0445\u0435\u043c\u044b.<\/p>\n<\/p><\/div>\n<aside class=\"zobai-callout\" aria-label=\"\u0413\u0440\u0430\u043d\u0438\u0446\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u044f 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\u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437\u0433\u043e\u0442\u043e\u0432\u0438\u0442\u0435\u043b\u044f \u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u0439 \u043d\u0438\u0436\u0435 \u043c\u0435\u0442\u043e\u0434 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0441\u0445\u0435\u043c\u044b \u0441 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u043a\u043b\u0430\u043f\u0430\u043d\u0430\u043c\u0438, \u0430 \u043d\u0435 \u0437\u0430\u043c\u0435\u043d\u0443 \u043e\u043a\u043e\u043d\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0440\u0430\u0441\u0447\u0435\u0442\u0430 \u0438\u043b\u0438 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u043e \u043d\u043e\u0440\u043c\u0430\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u0430.<\/p>\n<\/aside>\n<section id=\"s01-boiler-pressure-capacity-basis\">\n<h2>\u0414\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0438 \u043e\u0441\u043d\u043e\u0432\u0430 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u043a\u043e\u0442\u043b\u0430<\/h2>\n<p>\u041f\u0440\u0435\u0436\u0434\u0435 \u0447\u0435\u043c \u043d\u0430\u0437\u043d\u0430\u0447\u0430\u0442\u044c \u043f\u0440\u043e\u0446\u0435\u043d\u0442\u044b \u0438\u043b\u0438 \u0434\u043e\u043b\u0438 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u043c \u043a\u043b\u0430\u043f\u0430\u043d\u0430\u043c, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435, \u0447\u0442\u043e \u0434\u043e\u043b\u0436\u043d\u0430 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0442\u044c \u043f\u043e\u043b\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0437\u0430\u0449\u0438\u0442\u044b.<\/p>\n<p>\u0414\u043b\u044f \u043f\u0430\u0440\u043e\u0432\u043e\u0433\u043e \u043a\u043e\u0442\u043b\u0430 \u044d\u0442\u043e \u043e\u0431\u044b\u0447\u043d\u043e \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0433\u043e \u043a\u043e\u0442\u043b\u0430 \u0438\u043b\u0438 \u0441\u0435\u043a\u0446\u0438\u0438 \u043a\u043e\u0442\u043b\u0430, \u043e\u0441\u043d\u043e\u0432\u044b \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b, \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043f\u043e \u0441\u0431\u0440\u043e\u0441\u0443 \u043f\u0430\u0440\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0431\u044b\u0442\u044c \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0430, \u0438 \u043d\u043e\u0440\u043c \u0438\u043b\u0438 \u043f\u0440\u0430\u0432\u0438\u043b \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0442 \u0441\u0445\u0435\u043c\u043e\u0439. \u042d\u0442\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0434\u0430\u043d\u043d\u044b\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u0431\u044b\u0442\u044c \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u043e\u0431\u0437\u043e\u0440\u0430, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u043e\u0442 \u043d\u0438\u0445 \u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043a\u0430\u0436\u0434\u043e\u0435 \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435.<\/p>\n<p>\u041f\u043e\u043b\u044f \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u043e\u0441\u0442\u0430\u0432\u0430\u0442\u044c\u0441\u044f \u0440\u0430\u0437\u043d\u044b\u043c\u0438. \u041d\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0440\u0430\u0431\u043e\u0447\u0435\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u2014 \u044d\u0442\u043e \u043d\u0435 \u0442\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435, \u0447\u0442\u043e \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u043e\u0435 \u0440\u0430\u0431\u043e\u0447\u0435\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0438\u043b\u0438 \u0434\u0440\u0443\u0433\u043e\u0439 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u044b\u0439 \u043f\u0440\u0435\u0434\u0435\u043b. \u0414\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u2014 \u044d\u0442\u043e \u043d\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0441\u0431\u0440\u043e\u0441\u0430. \u0418 \u043d\u0438 \u043e\u0434\u043d\u043e \u0438\u0437 \u044d\u0442\u0438\u0445 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0439 \u0441\u0430\u043c\u043e \u043f\u043e \u0441\u0435\u0431\u0435 \u043d\u0435 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u043e \u0441\u0431\u0440\u043e\u0441\u0443.<\/p>\n<p>\u0422\u0430\u043a\u043e\u0435 \u0436\u0435 \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0438 \u043a \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438. \u041a\u043e\u0442\u0435\u043b \u0438\u043c\u0435\u0435\u0442 <strong>\u0442\u0440\u0435\u0431\u0443\u0435\u043c\u0443\u044e \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043f\u043e \u0441\u0431\u0440\u043e\u0441\u0443<\/strong>. \u041a\u0430\u0436\u0434\u044b\u0439 \u043a\u043b\u0430\u043f\u0430\u043d \u0438\u043c\u0435\u0435\u0442 <strong>\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0438\u043b\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445<\/strong>. \u0418\u043d\u0436\u0435\u043d\u0435\u0440\u043d\u0430\u044f \u0437\u0430\u0434\u0430\u0447\u0430 \u2014 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u0442\u044c, \u0447\u0442\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u044b\u0435 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0431\u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0437\u0430\u0447\u0442\u0435\u043d\u044b \u0432 \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u0445\u0435\u043c\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438, \u0443\u0434\u043e\u0432\u043b\u0435\u0442\u0432\u043e\u0440\u044f\u044e\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0435 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e \u043a\u043e\u0442\u043b\u0443.<\/p>\n<p>\u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u043e\u043b\u0435\u0437\u043d\u0430\u044f \u0438\u0441\u0445\u043e\u0434\u043d\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0434\u043e\u043b\u0436\u043d\u0430 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c:<\/p>\n<ul>\n<li>\u043a\u043e\u0442\u0451\u043b \u0438\u043b\u0438 \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u044b\u0439 \u0443\u0447\u0430\u0441\u0442\u043e\u043a;<\/li>\n<li>\u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0439 \u043a\u043e\u0434\u0435\u043a\u0441, \u043f\u0440\u0438\u043d\u044f\u0442\u0443\u044e \u0440\u0435\u0434\u0430\u043a\u0446\u0438\u044e, \u044e\u0440\u0438\u0441\u0434\u0438\u043a\u0446\u0438\u044e \u0438\u043b\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u043e\u0435 \u043e\u0431\u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0438\u0435, \u0435\u0441\u043b\u0438 \u043e\u043d\u0438 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b;<\/li>\n<li>\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0449\u0435\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0438\u043b\u0438 MAWP;<\/li>\n<li>\u043d\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0440\u0430\u0431\u043e\u0447\u0435\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435, \u0435\u0441\u043b\u0438 \u043e\u043d\u043e \u0432\u0430\u0436\u043d\u043e \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0430;<\/li>\n<li>\u0442\u0440\u0435\u0431\u0443\u0435\u043c\u0443\u044e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043f\u043e \u043f\u0430\u0440\u0443 \u0438\u043b\u0438 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u0443\u044e \u043f\u0430\u0440\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c, \u043f\u0440\u0438\u043d\u044f\u0442\u0443\u044e \u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0435;<\/li>\n<li>\u0440\u0430\u0441\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043b\u0430\u043f\u0430\u043d\u0430;<\/li>\n<li>\u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u044f \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0438 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043a\u043b\u0430\u043f\u0430\u043d\u0430.<\/li>\n<\/ul>\n<p>\u0422\u0430\u043a\u043e\u0439 \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0451\u043d\u043d\u0443\u044e \u043e\u0448\u0438\u0431\u043a\u0443: \u043d\u0430\u0447\u0438\u043d\u0430\u0442\u044c \u0441 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u043a\u0430\u0437\u0430\u043b\u0438\u0441\u044c \u043f\u043e\u0434 \u0440\u0443\u043a\u043e\u0439, \u0438 \u043f\u044b\u0442\u0430\u0442\u044c\u0441\u044f \u043f\u043e\u0434\u043e\u0433\u043d\u0430\u0442\u044c \u0438\u0445 \u043a\u0430\u0442\u0430\u043b\u043e\u0436\u043d\u044b\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u044b\u0435 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u043f\u043e\u0434 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u0443\u044e \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0435\u0449\u0451 \u0447\u0451\u0442\u043a\u043e \u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0430.<\/p>\n<h3>\u0422\u0440\u0435\u0431\u0443\u0435\u043c\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043d\u0435 \u0440\u0430\u0432\u043d\u0430 \u043d\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u0440\u0430\u0441\u0445\u043e\u0434\u0443 \u043f\u0430\u0440\u0430<\/h3>\n<p>\u041a\u043e\u0442\u0451\u043b \u043c\u043e\u0436\u0435\u0442 \u0431\u043e\u043b\u044c\u0448\u0443\u044e \u0447\u0430\u0441\u0442\u044c \u0441\u0440\u043e\u043a\u0430 \u0441\u043b\u0443\u0436\u0431\u044b \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043d\u0438\u0436\u0435 \u0441\u0432\u043e\u0435\u0439 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u0430\u0440\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u042d\u0442\u043e \u043d\u0435 \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442, \u0447\u0442\u043e \u043d\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u044b\u0439 \u0440\u0430\u0431\u043e\u0447\u0438\u0439 \u0440\u0430\u0441\u0445\u043e\u0434 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u043e\u0441\u043d\u043e\u0432\u043e\u0439 \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u043f\u0440\u0435\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f.<\/p>\n<p>\u0422\u0440\u0435\u0431\u0443\u0435\u043c\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0434\u043e\u043b\u0436\u043d\u0430 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u0442\u044c\u0441\u044f \u0438\u0441\u0445\u043e\u0434\u044f \u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u044b\u0445 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a \u043a\u043e\u0442\u043b\u0430 \u0438 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u0439 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u044b\u0445 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u043e\u0432. \u0412 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0445 \u043f\u0440\u0430\u0432\u0438\u043b \u044d\u0442\u0430 \u043e\u0441\u043d\u043e\u0432\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043d\u0430 \u043a \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0439 \u043f\u0430\u0440\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0438\u043b\u0438 \u0438\u0441\u043f\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438, \u0442\u0435\u043f\u043b\u043e\u0432\u043e\u0439 \u043c\u043e\u0449\u043d\u043e\u0441\u0442\u0438 \u0438\u043b\u0438 \u0434\u0440\u0443\u0433\u043e\u043c\u0443 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0451\u043d\u043d\u043e\u043c\u0443 \u043c\u0435\u0442\u043e\u0434\u0443. \u041d\u0438 \u043e\u0434\u0438\u043d \u043c\u0435\u0442\u043e\u0434 \u043d\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u043a\u0430\u043a \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u0443\u044e \u0444\u043e\u0440\u043c\u0443\u043b\u0443, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u0447\u0438\u0442\u0430\u0442\u0435\u043b\u044f \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043d\u043e\u0440\u043c\u044b \u0438 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u043a\u043e\u0442\u043b\u0430 \u043d\u0435 \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438.<\/p>\n<p>\u041f\u0440\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u043e \u043f\u0440\u043e\u0449\u0435: <strong>\u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u0443\u044e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c, \u0437\u0430\u0442\u0435\u043c \u0441\u0440\u0430\u0432\u043d\u0438\u0442\u0435 \u0441 \u043d\u0435\u0439 \u0441\u0445\u0435\u043c\u0443 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432.<\/strong><\/p>\n<aside class=\"zobai-related-link\" aria-label=\"Related standards guide\">\n<p>\u0414\u043b\u044f \u0431\u043e\u043b\u0435\u0435 \u0448\u0438\u0440\u043e\u043a\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0430 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u043c. <a href=\"https:\/\/zobai.com\/ru\/standards\/asme-safety-valve-standards\/\">\u0421\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u044b ASME \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432<\/a>.<\/p>\n<\/aside>\n<\/section>\n<section id=\"s02-set-pressure-staging\">\n<h2>\u0421\u0442\u0443\u043f\u0435\u043d\u0447\u0430\u0442\u0430\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u0435\u0437 \u0442\u0440\u0430\u043a\u0442\u043e\u0432\u043a\u0438 \u043f\u043e\u0440\u044f\u0434\u043a\u0430 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u044f \u043a\u0430\u043a \u0434\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438<\/h2>\n<p>\u041a\u043e\u0433\u0434\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u0437\u0430\u0449\u0438\u0449\u0430\u044e\u0442 \u043e\u0434\u043d\u0443 \u0438 \u0442\u0443 \u0436\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u043a\u043e\u0442\u043b\u0430, \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0438\u043c \u0440\u0430\u0437\u043d\u044b\u0445 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043f\u0440\u0435\u0434\u043d\u0430\u043c\u0435\u0440\u0435\u043d\u043d\u0443\u044e \u0441\u0442\u0443\u043f\u0435\u043d\u0447\u0430\u0442\u0443\u044e \u0440\u0435\u0430\u043a\u0446\u0438\u044e. \u041a\u043b\u0430\u043f\u0430\u043d \u0441 \u0431\u043e\u043b\u0435\u0435 \u043d\u0438\u0437\u043a\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u043e\u0439 \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u043f\u0440\u0438 \u0431\u043e\u043b\u0435\u0435 \u043d\u0438\u0437\u043a\u043e\u043c \u043f\u043e\u0440\u043e\u0433\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f, \u0442\u043e\u0433\u0434\u0430 \u043a\u0430\u043a \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b \u043c\u043e\u0433\u0443\u0442 \u0438\u043c\u0435\u0442\u044c \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u0438\u0435 \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u044b\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438.<\/p>\n<p>\u041e\u0434\u043d\u0430\u043a\u043e \u0441\u0442\u0443\u043f\u0435\u043d\u0447\u0430\u0442\u044b\u0439 \u043f\u0435\u0440\u0435\u0447\u0435\u043d\u044c \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u043f\u043e \u043f\u0430\u0441\u043f\u043e\u0440\u0442\u043d\u044b\u043c \u0434\u0430\u043d\u043d\u044b\u043c \u2014 \u044d\u0442\u043e \u043b\u0438\u0448\u044c \u0447\u0430\u0441\u0442\u044c \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f.<\/p>\n<p>\u0414\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u043e\u0435 \u0441\u043e\u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u0435 \u043c\u0435\u0436\u0434\u0443 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u043c\u0438 \u0437\u0430\u0432\u0438\u0441\u0438\u0442 \u043e\u0442 \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u043d\u044b\u0445 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u0439. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u0412\u0438\u0440\u0434\u0436\u0438\u043d\u0438\u0438 \u0438 \u041c\u044d\u0440\u0438\u043b\u0435\u043d\u0434\u0430 \u0434\u043b\u044f \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u044d\u043d\u0435\u0440\u0433\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043a\u043e\u0442\u043b\u043e\u0432 \u0438\u043b\u043b\u044e\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0442 \u043e\u0434\u0438\u043d \u0438\u0437 \u043f\u043e\u0434\u0445\u043e\u0434\u043e\u0432 \u0432 \u044e\u0440\u0438\u0441\u0434\u0438\u043a\u0446\u0438\u0438 \u0421\u0428\u0410: \u043e\u0434\u0438\u043d \u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u044b \u043d\u0430 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0435 \u0432\u044b\u0448\u0435 MAWP, \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u044b \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u044b \u0432 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0446\u0435\u043d\u0442\u043d\u043e\u0433\u043e \u043f\u0440\u0435\u0432\u044b\u0448\u0435\u043d\u0438\u044f MAWP, \u0430 \u043e\u0431\u0449\u0438\u0439 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u0442\u0430\u043a\u0436\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d. \u042d\u0442\u0438 \u0436\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0442 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u043a\u0440\u0438\u0442\u0435\u0440\u0438\u0439 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438 \u043e\u0446\u0435\u043d\u043a\u0435 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438.<\/p>\n<p>\u042d\u0442\u0438 \u0446\u0438\u0444\u0440\u044b \u043f\u043e\u043b\u0435\u0437\u043d\u044b \u0434\u043b\u044f \u043f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u043d\u043e\u0433\u043e \u043f\u043e\u0434\u0445\u043e\u0434\u0430, \u043d\u043e \u043e\u043d\u0438 <strong>\u043d\u0435 \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u044b\u043c\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u044b\u043c\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e<\/strong>. Another jurisdiction, a different boiler category, or a different adopted edition may impose a different requirement. The schedule therefore needs a field for the governing source rather than a hard-coded \u201cstandard staging percentage.\u201d<\/p>\n<p>There is a second reason not to over-interpret the nameplate settings: two values on a schedule do not, by themselves, prove the exact dynamic sequence in every operating transient. Actual valve behavior also depends on the valve design, setting tolerance, pressure development, installation, and system response.<\/p>\n<p>For the purposes of a boiler safety-valve schedule, the safer interpretation is:<\/p>\n<blockquote>\n<p><strong>Set pressure defines the intended pressure threshold and must satisfy the governing pressure rules. It does not independently demonstrate how much steam the valve can relieve or prove the adequacy of the complete arrangement.<\/strong><\/p>\n<\/blockquote>\n<p>This is where pressure staging and capacity allocation begin to interact. Changing the set pressure can also change the relieving-pressure basis under which a steam capacity is established. A capacity number should therefore not be detached from the setting and certification basis that supports it.<\/p>\n<\/section>\n<section id=\"s03-capacity-allocation\">\n<h2>Allocate Capacity Valve by Valve on the Correct Basis<\/h2>\n<p>Once the boiler&#8217;s required duty and the permitted set-pressure arrangement are defined, the engineer can turn to the capacity allocated to each valve.<\/p>\n<p>The first question is not \u201cWhat percentage should each valve carry?\u201d It is:<\/p>\n<blockquote>\n<p><strong>What capacity can this particular valve legitimately contribute to this particular protected arrangement?<\/strong><\/p>\n<\/blockquote>\n<p>That contribution needs an identifiable basis.<\/p>\n<p>For steam safety valves, recognized certification data can tie relieving capacity to factors such as the valve design identity, marked set pressure or valid set-pressure range, code designator, steam condition, effective flow area, and the relieving-pressure basis used for certification. National Board NB-18 documentation is a useful example of why capacity is not a free-standing catalog value: the certified steam-capacity methodology explicitly relates capacity to marked set pressure, relieving pressure, code basis, and steam condition.<\/p>\n<p>This creates an important review sequence:<\/p>\n<ol>\n<li>establish the required boiler relieving duty;<\/li>\n<li>identify each valve;<\/li>\n<li>\u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u0442\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043a\u043b\u0430\u043f\u0430\u043d\u0430;<\/li>\n<li>\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0439 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442 \u043f\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0438\u043b\u0438 \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438;<\/li>\n<li>\u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u0442\u0435, \u0447\u0442\u043e \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f \u043a \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u043c \u043f\u043e \u043f\u0430\u0440\u0443 \u0438 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044e;<\/li>\n<li>\u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435, \u043c\u043e\u0436\u043d\u043e \u043b\u0438 \u0437\u0430\u0447\u0435\u0441\u0442\u044c \u044d\u0442\u0443 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0432 \u043c\u0435\u0441\u0442\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438;<\/li>\n<li>\u0442\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0441\u043b\u0435 \u044d\u0442\u043e\u0433\u043e \u0441\u0443\u043c\u043c\u0438\u0440\u0443\u0439\u0442\u0435 \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u044b\u0435 \u0432\u043a\u043b\u0430\u0434\u044b.<\/li>\n<\/ol>\n<aside class=\"zobai-related-link\" aria-label=\"Related capacity guide\">\n<p>\u0414\u043b\u044f \u0431\u043e\u043b\u0435\u0435 \u0448\u0438\u0440\u043e\u043a\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430 \u0440\u0430\u0441\u0447\u0435\u0442\u0430, \u043b\u0435\u0436\u0430\u0449\u0435\u0433\u043e \u0432 \u043e\u0441\u043d\u043e\u0432\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u043c\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438, \u043f\u043b\u043e\u0449\u0430\u0434\u0438 \u043f\u0440\u043e\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u0441\u0435\u0447\u0435\u043d\u0438\u044f \u0438 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438, \u0438\u0437\u0443\u0447\u0438\u0442\u0435 <a href=\"https:\/\/zobai.com\/ru\/blog\/safety-valve-sizing-and-certified-relieving-capacity-guide\/\">\u0440\u0430\u0441\u0447\u0435\u0442\u0443 \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438<\/a>.<\/p>\n<\/aside>\n<h3>\u0410\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u043a\u0430 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u2014 \u044d\u0442\u043e \u043d\u0435 \u0434\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438<\/h3>\n<p>\u041f\u0440\u0435\u0434\u043f\u043e\u043b\u043e\u0436\u0438\u043c, \u0432 \u0433\u0440\u0430\u0444\u0438\u043a\u0435 \u0443\u043a\u0430\u0437\u0430\u043d\u044b \u0442\u0440\u0438 \u043a\u043b\u0430\u043f\u0430\u043d\u0430 \u0441 \u0442\u0440\u0435\u043c\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438. \u0421\u043b\u043e\u0436\u0438\u0442\u044c \u044d\u0442\u0438 \u0442\u0440\u0438 \u0447\u0438\u0441\u043b\u0430 \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043b\u0435\u0433\u043a\u043e. \u0418\u043d\u0436\u0435\u043d\u0435\u0440\u043d\u044b\u0439 \u0432\u043e\u043f\u0440\u043e\u0441 \u0432 \u0442\u043e\u043c, \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043b\u0438 \u044d\u0442\u0438 \u0442\u0440\u0438 \u0447\u0438\u0441\u043b\u0430 <strong>\u0441\u043e\u043f\u043e\u0441\u0442\u0430\u0432\u0438\u043c\u044b\u043c\u0438 \u0438 \u0437\u0430\u0447\u0438\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u043c\u0438<\/strong>.<\/p>\n<p>\u041f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0443\u044e \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043a\u043b\u0430\u043f\u0430\u043d\u0430, \u0432\u0437\u044f\u0442\u0443\u044e \u043f\u0440\u0438 \u0434\u0440\u0443\u0433\u043e\u043c \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u043e\u043c \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0438, \u0434\u043b\u044f \u0434\u0440\u0443\u0433\u043e\u0439 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u0438\u043b\u0438 \u043f\u0440\u0438 \u0434\u0440\u0443\u0433\u0438\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u043f\u043e \u043f\u0430\u0440\u0443, \u043d\u0435\u043b\u044c\u0437\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u0442\u044c \u0432 \u0442\u0435\u043a\u0443\u0449\u0438\u0439 \u0433\u0440\u0430\u0444\u0438\u043a. \u0422\u0430 \u0436\u0435 \u043e\u0441\u0442\u043e\u0440\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u0430, \u043a\u043e\u0433\u0434\u0430 \u0447\u0438\u0441\u043b\u043e \u0431\u0435\u0440\u0435\u0442\u0441\u044f \u0438\u0437 \u043e\u0431\u0449\u0435\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0441\u0435\u043c\u0435\u0439\u0441\u0442\u0432\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438, \u0430 \u043d\u0435 \u0438\u0437 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u043a\u043b\u0430\u043f\u0430\u043d\u0430.<\/p>\n<p>\u042d\u0442\u043e \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u0435 \u043c\u043e\u0436\u043d\u043e \u0441\u0444\u043e\u0440\u043c\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0442\u0430\u043a:<\/p>\n<div class=\"zobai-table-wrap\" role=\"region\" aria-label=\"Capacity evidence distinctions\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">\u041f\u043e\u0437\u0438\u0446\u0438\u044f \u0433\u0440\u0430\u0444\u0438\u043a\u0430<\/th>\n<th scope=\"col\">\u0427\u0442\u043e \u044d\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c<\/th>\n<th scope=\"col\">\u0427\u0442\u043e \u043e\u043d\u043e \u0441\u0430\u043c\u043e \u043f\u043e \u0441\u0435\u0431\u0435 \u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u0442<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0414\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438<\/td>\n<td>\u0417\u0430\u0434\u0430\u043d\u043d\u043e\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043a\u043b\u0430\u043f\u0430\u043d\u0430<\/td>\n<td>\u041f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u0441\u0431\u0440\u043e\u0441\u0430<\/td>\n<\/tr>\n<tr>\n<td>\u0420\u0430\u0437\u043c\u0435\u0440 \u043f\u0440\u0438\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f \u0432\u0445\u043e\u0434\/\u0432\u044b\u0445\u043e\u0434<\/td>\n<td>\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u0444\u0438\u0437\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043f\u0440\u0438\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f<\/td>\n<td>\u041f\u0440\u043e\u0445\u043e\u0434\u043d\u043e\u0435 \u0441\u0435\u0447\u0435\u043d\u0438\u0435 \u0438\u043b\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c<\/td>\n<\/tr>\n<tr>\n<td>\u041e\u0431\u043e\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 orifice \u0438\u043b\u0438 \u043f\u0440\u043e\u0445\u043e\u0434\u043d\u043e\u0433\u043e \u0441\u0435\u0447\u0435\u043d\u0438\u044f<\/td>\n<td>\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u0447\u0430\u0441\u0442\u0438 \u043f\u0440\u043e\u0442\u043e\u0447\u043d\u043e\u0439 \u0447\u0430\u0441\u0442\u0438, \u0433\u0434\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u043e<\/td>\n<td>\u0421\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u0438 \u0432\u0441\u0435\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445<\/td>\n<\/tr>\n<tr>\n<td>\u0417\u0430\u043f\u0438\u0441\u044c \u043e \u043a\u0430\u043b\u0438\u0431\u0440\u043e\u0432\u043a\u0435 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438<\/td>\n<td>\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438\/\u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0439<\/td>\n<td>\u0422\u0440\u0435\u0431\u0443\u0435\u043c\u0430\u044f \u043f\u0430\u0440\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u0442\u043b\u0430 \u0438\u043b\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c<\/td>\n<\/tr>\n<tr>\n<td>\u0417\u0430\u043f\u0438\u0441\u044c \u043e \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439\/\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438<\/td>\n<td>\u041f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c \u043d\u0430 \u0437\u0430\u044f\u0432\u043b\u0435\u043d\u043d\u043e\u043c \u0431\u0430\u0437\u0438\u0441\u0435 \u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445<\/td>\n<td>\u041f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u043b\u044e\u0431\u043e\u0439 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0438\u043b\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430<\/td>\n<\/tr>\n<tr>\n<td>\u0410\u0440\u0438\u0444\u043c\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0441\u0443\u043c\u043c\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u044b\u0445 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0435\u0439<\/td>\n<td>Numerical total<\/td>\n<td>Whether all contributions may legally and technically be credited<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>That is why \u201ctwo valves at 50% each\u201d or \u201cthree valves sharing the duty equally\u201d should never be the starting assumption unless the governing design and verified valve data support that allocation.<\/p>\n<p>Unequal allocations can also be technically plausible in a multi-valve arrangement, but they should not be treated as a universal rule. The acceptable distribution depends on the governing boiler requirements and on which individual valve capacities can actually be credited.<\/p>\n<h3>Calibration and capacity certification are different evidence<\/h3>\n<p>A valve can have a valid set-pressure test record without that record proving that the valve provides the steam capacity required by the boiler.<\/p>\n<p>Set-pressure testing answers a setting or operational-test question. Capacity certification answers a flow-performance question under a defined certification basis. A complete boiler schedule often needs both kinds of evidence, but they are not interchangeable.<\/p>\n<p>This distinction becomes especially important during maintenance and replacement. Restoring a valve to the same nominal set pressure does not automatically demonstrate that a replacement valve has the same certified capacity, the same flow area, the same applicable code designator, or the same suitability for the protected location.<\/p>\n<figure class=\"zobai-figure\" data-image-status=\"complete\" data-upload-status=\"final-upload-verified\" data-image-slot=\"image-01-boiler-pressure-capacity-relationship\">\n  <img loading=\"lazy\" src=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation.webp\" alt=\"\u041a\u043e\u043d\u0446\u0435\u043f\u0442\u0443\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u0437\u0430\u0438\u043c\u043e\u0441\u0432\u044f\u0437\u044c \u043c\u0435\u0436\u0434\u0443 \u0441\u0442\u0443\u043f\u0435\u043d\u0447\u0430\u0442\u043e\u0439 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u043e\u0439 \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u043a\u043e\u0442\u043b\u0430, \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c\u044e \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043a\u043b\u0430\u043f\u0430\u043d\u0430 \u0438 \u043c\u0435\u0441\u0442\u043e\u043c \u0440\u0430\u0441\u043f\u043e\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0433\u043e \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u044f.\" title=\"Boiler Safety Valve Set Pressure Staging and Capacity Allocation - Engineering Diagram 1\" width=\"1200\" height=\"900\" class=\"wp-image-57096\" decoding=\"async\" srcset=\"https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation.webp 1200w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation-300x225.webp 300w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation-1024x768.webp 1024w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation-768x576.webp 768w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation-16x12.webp 16w, https:\/\/zobai.com\/wp-content\/uploads\/2026\/09\/boiler-safety-valve-set-pressure-capacity-allocation-400x300.webp 400w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption>Set-pressure staging controls opening thresholds, while documented capacity must be credited valve by valve and may depend on the protected location.<\/figcaption><\/figure>\n<\/section>\n<section id=\"s04-location-capacity-credit\">\n<h2>When Valve Location Changes What Capacity Can Be Credited<\/h2>\n<p>A second major error is to treat every safety valve physically associated with a boiler as though all capacity were available in one unrestricted pool.<\/p>\n<p>That assumption may fail when different valves protect different parts of the boiler.<\/p>\n<p>A drum-mounted valve and a valve protecting a superheater, for example, can have different pressure or capacity responsibilities under the applicable boiler rules. Some regulated boiler frameworks explicitly treat the drum and superheater separately while still relating their capacities to an overall boiler generating-capacity requirement.<\/p>\n<p>The exact allocation rule is not universal, so this article does not assign a generic drum\/superheater percentage. Instead, the engineer should ask two questions:<\/p>\n<ol>\n<li><strong>What total relieving duty must the complete boiler protection arrangement satisfy?<\/strong><\/li>\n<li><strong>Does the governing code impose a separate local protection or capacity requirement at this valve&#8217;s installed location?<\/strong><\/li>\n<\/ol>\n<p>Both questions matter.<\/p>\n<p>A total capacity sum may appear adequate while a specific protected section is inadequately covered. Conversely, a valve that provides essential local protection may be creditable toward the total requirement only under defined conditions.<\/p>\n<h3>A representative review scenario<\/h3>\n<p>Consider a boiler with two safety valves on the main pressure-containing section and another valve associated with a superheater.<\/p>\n<p>The wrong review method is:<\/p>\n<blockquote>\n<p>Add all three catalog capacities and compare the result with one boiler capacity number.<\/p>\n<\/blockquote>\n<p>The more defensible review is:<\/p>\n<ul>\n<li>establish the required boiler relieving duty;<\/li>\n<li>identify which section each valve protects;<\/li>\n<li>verify the permitted setting relationship for those locations;<\/li>\n<li>identify the documented capacity basis for each valve;<\/li>\n<li>determine whether the governing rules allow each capacity to contribute to the overall requirement;<\/li>\n<li>verify any location-specific minimum or separate protection responsibility;<\/li>\n<li>then assess the combined schedule.<\/li>\n<\/ul>\n<p>No numerical values are needed to understand the logic. The purpose of the scenario is to show why <strong>location is an engineering variable in capacity allocation<\/strong>, not merely a line in an equipment list.<\/p>\n<p>It also explains why changing the location of a valve\u2014or replacing a valve at one location with a superficially similar device\u2014can require more than checking the flange size and set pressure.<\/p>\n<\/section>\n<section id=\"s05-valve-by-valve-verification\">\n<h2>Verify the Final Arrangement With a Valve-by-Valve Schedule<\/h2>\n<p>The final review should make the evidence visible valve by valve.<\/p>\n<p>A useful schedule does more than list tags, sizes, and set pressures. It should allow an engineer, inspector, or supplier to trace how each valve contributes to the protection basis and where a conclusion still depends on missing project data.<\/p>\n<p>A practical structure is:<\/p>\n<div class=\"zobai-table-wrap\" role=\"region\" aria-label=\"Valve-by-valve verification schedule\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Review field<\/th>\n<th scope=\"col\">What to record<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Valve ID<\/td>\n<td>Unique tag or existing-valve identifier<\/td>\n<\/tr>\n<tr>\n<td>Protected location<\/td>\n<td>Drum, superheater, or other clearly defined protected section<\/td>\n<\/tr>\n<tr>\n<td>Governing pressure basis<\/td>\n<td>MAWP or other applicable approved basis<\/td>\n<\/tr>\n<tr>\n<td>\u0414\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438<\/td>\n<td>Proposed or existing marked setting<\/td>\n<\/tr>\n<tr>\n<td>Required \/ allocated duty<\/td>\n<td>Portion of the governing duty being checked against this valve, where the design uses an allocation<\/td>\n<\/tr>\n<tr>\n<td>Capacity source<\/td>\n<td>Certified capacity listing, manufacturer documentation, approved calculation, or other applicable basis<\/td>\n<\/tr>\n<tr>\n<td>Capacity conditions<\/td>\n<td>Relevant set pressure, relieving-pressure basis, steam condition, and design identity<\/td>\n<\/tr>\n<tr>\n<td>Credited capacity<\/td>\n<td>Capacity actually accepted for the schedule\u2014not simply a catalog maximum<\/td>\n<\/tr>\n<tr>\n<td>Local protection requirement<\/td>\n<td>Any separate requirement associated with the installed location<\/td>\n<\/tr>\n<tr>\n<td>Code \/ project basis<\/td>\n<td>Standard, jurisdiction, project specification, or design reference<\/td>\n<\/tr>\n<tr>\n<td>Supporting record<\/td>\n<td>Datasheet, certification record, nameplate information, test\/calibration record, or calculation reference<\/td>\n<\/tr>\n<tr>\n<td>\u0421\u0442\u0430\u0442\u0443\u0441<\/td>\n<td>Verified \/ conditional \/ confirmation required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The value of this table is not administrative neatness. It forces the reviewer to distinguish three states:<\/p>\n<ul class=\"zobai-status-list\">\n<li><strong>Proven.<\/strong> The capacity or pressure setting has an applicable, traceable basis.<\/li>\n<li><strong>Conditional.<\/strong> The engineering relationship is understood, but final credit depends on a code edition, project rule, operating condition, or product document that still needs confirmation.<\/li>\n<li><strong>Unresolved.<\/strong> The schedule contains a nominal value, but the evidence needed to rely on it has not been identified.<\/li>\n<\/ul>\n<p>That distinction is more useful than a table in which every field is filled but the source and applicability of the numbers are unclear.<\/p>\n<h3>Recheck the whole relationship after a meaningful change<\/h3>\n<p>A boiler safety-valve schedule should not be treated as permanently valid simply because the valves remain physically installed.<\/p>\n<p>If the required steam-generating duty is increased, the required relieving capacity can change. If one valve is replaced, its design identity or documented capacity basis can change. If a set pressure changes, the pressure\/capacity relationship may need to be reconfirmed. If a valve moves to another protected location, location-specific credit can change.<\/p>\n<p>The precise regulatory consequence of each modification depends on the governing jurisdiction and project requirements. But from an engineering-review standpoint, any change that alters a basis on which the existing schedule credits protection should trigger a check of that basis.<\/p>\n<p>For a replacement valve, do not reduce the comparison to \u201csame connection and same set pressure.\u201d A defensible review may also need to compare:<\/p>\n<ul>\n<li>valve design or certified design identity;<\/li>\n<li>set-pressure range;<\/li>\n<li>documented steam capacity;<\/li>\n<li>applicable capacity\/certification basis;<\/li>\n<li>flow-area or orifice identity where relevant;<\/li>\n<li>protected location;<\/li>\n<li>installation and back-pressure conditions where they affect applicability;<\/li>\n<li>code, project, and documentation requirements.<\/li>\n<\/ul>\n<p>Matching only one or two nominal fields is identification evidence\u2014not proof of full interchangeability.<\/p>\n<\/section>\n<section id=\"s06-protection-schedule-conclusion\">\n<h2>From a Staged Valve List to a Defensible Protection Schedule<\/h2>\n<p>Set-pressure staging and capacity allocation should end in one coordinated engineering record.<\/p>\n<p>The pressure side of that record answers: <strong>Are the valve settings permitted for this boiler and pressure basis?<\/strong><\/p>\n<p>The capacity side answers: <strong>Does each credited valve capacity have an applicable technical basis, and does the permitted combination satisfy the required relieving duty?<\/strong><\/p>\n<p>The location check answers: <strong>Is the capacity available where the governing protection requirement needs it?<\/strong><\/p>\n<p>The documentation check answers: <strong>Can each important value be traced to the code, calculation, certification record, manufacturer document, or test record that actually supports it?<\/strong><\/p>\n<p>When those questions are answered together, a multi-valve schedule becomes more than a list of set points and capacities. It becomes a reviewable protection argument.<\/p>\n<p>If any of those bases are still unknown, they should remain visible as confirmation items rather than being replaced by a generic percentage or assumed catalog value.<\/p>\n<h3>Prepare the data before requesting an engineering review<\/h3>\n<p>For a project-specific review, provide the boiler type and protected sections, applicable code or jurisdiction if known, MAWP or other governing pressure basis, normal operating pressure, required steam-relieving duty or calculation basis, each valve location and set pressure, and the documentation supporting each valve&#8217;s capacity.<\/p>\n<p>For an existing installation or replacement, also provide the available valve nameplate, datasheet, certification\/capacity records, and information about any boiler-duty or configuration change.<\/p>\n<p>The objective is not to choose a valve from the article alone. It is to give the responsible engineer and valve supplier enough information to determine whether the proposed settings and capacities form one coherent, defensible protection arrangement.<\/p>\n<\/section>\n<aside class=\"zobai-cta\" aria-label=\"\u0418\u043d\u0436\u0435\u043d\u0435\u0440\u043d\u044b\u0439 \u043e\u0431\u0437\u043e\u0440\">\n    <strong>Review Your Boiler Safety-Valve Schedule<\/strong><\/p>\n<p>Send the boiler type and protected sections, governing pressure basis, required steam-relieving duty, valve locations and set pressures, and the available capacity documentation. ZOBAI can use those inputs to review the safety-valve requirement and identify what still needs project or product confirmation.<\/p>\n<p>    <a class=\"zobai-btn\" href=\"https:\/\/zobai.com\/ru\/ask-an-engineer\/\">\u0417\u0430\u0434\u0430\u0442\u044c \u0432\u043e\u043f\u0440\u043e\u0441 \u0438\u043d\u0436\u0435\u043d\u0435\u0440\u0443 \u043f\u043e \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u043a\u043b\u0430\u043f\u0430\u043d\u0430\u043c<\/a><br \/>\n  <\/aside>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>\u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u0442\u0435, \u043a\u0430\u043a \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0435\u0434\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043a\u043b\u0430\u043f\u0430\u043d\u043e\u0432 \u043a\u043e\u0442\u043b\u0430 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0442\u0441\u044f \u043f\u043e \u0441\u0442\u0443\u043f\u0435\u043d\u044f\u043c \u043f\u043e \u0434\u0430\u0432\u043b\u0435\u043d\u0438\u044e \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u0438 \u043a\u0430\u043a \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u043d\u0430\u044f \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u0430\u044f \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u044c, \u0437\u0430\u0449\u0438\u0449\u0430\u0435\u043c\u043e\u0435 \u043c\u0435\u0441\u0442\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0438 \u0434\u0430\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0432\u043b\u0438\u044f\u044e\u0442 \u043d\u0430 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438.<\/p>","protected":false},"author":2,"featured_media":57096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[74],"tags":[],"class_list":["post-57073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sizing-performance-engineering"],"_links":{"self":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/posts\/57073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/comments?post=57073"}],"version-history":[{"count":3,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/posts\/57073\/revisions"}],"predecessor-version":[{"id":57124,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/posts\/57073\/revisions\/57124"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/media\/57096"}],"wp:attachment":[{"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/media?parent=57073"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/categories?post=57073"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zobai.com\/ru\/wp-json\/wp\/v2\/tags?post=57073"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}