{"id":122371,"date":"2026-03-11T08:54:20","date_gmt":"2026-03-11T06:54:20","guid":{"rendered":"https:\/\/roussakis.com.gr\/mi-katigoriopoiimeno\/rapid-cryogenic-intervention-10-tons-of-liquid-nitrogen-used-for-main-engine-bearing-repair\/"},"modified":"2026-03-11T08:54:20","modified_gmt":"2026-03-11T06:54:20","slug":"rapid-cryogenic-intervention-10-tons-of-liquid-nitrogen-used-for-main-engine-bearing-repair","status":"publish","type":"post","link":"https:\/\/roussakis.com.gr\/en\/nea-en\/rapid-cryogenic-intervention-10-tons-of-liquid-nitrogen-used-for-main-engine-bearing-repair\/","title":{"rendered":"Rapid Cryogenic Intervention: 10 Tons of Liquid Nitrogen Used for Main Engine Bearing Repair"},"content":{"rendered":"<p>In a high-priority technical operation, an industrial gas company successfully undertook the repair of a vessel\u2019s main engine and engine bearings (chocks), utilizing 10 tons of liquid nitrogen (LN\u2082) to complete the project with precision and speed.<\/p>\n<h4>An Urgent Call \u2013 Immediate Response<\/h4>\n<p>The project originated from an urgent call, where immediate technical intervention was required to avoid extended downtime and operational disruption. Due to the critical timeline and the need for specialized cryogenic expertise, the gas company mobilized instantly \u2014 deploying equipment, technical personnel, and cryogenic supply within strict time constraints.<\/p>\n<p>Because of this responsiveness and technical capability, the project was entrusted to Roussakis Companies, specifically:<\/p>\n<ul>\n<li>Roussakis Supplies<\/li>\n<li>Roussakis Gases<\/li>\n<\/ul>\n<p>The combination of rapid mobilization and coordinated technical execution ensured that the repair could proceed without delay.<\/p>\n<h4>The Technical Solution: Cryogenic Shrink Fitting<\/h4>\n<p>The repair involved the replacement and precise fitting of large main engine components and bearings. Given the extremely tight mechanical tolerances and the sensitivity of the materials involved, traditional heating methods were not considered optimal.<\/p>\n<p>Instead, a cryogenic method was selected:<\/p>\n<ul>\n<li>Components were cooled using liquid nitrogen at -196\u00b0C<\/li>\n<li>Controlled thermal contraction allowed accurate positioning<\/li>\n<li>Mechanical stress during installation was minimized<\/li>\n<li>Upon returning to ambient temperature, the components expanded to achieve perfect interference fit<\/li>\n<\/ul>\n<p>A total of 10 tons of liquid nitrogen were safely transported and utilized under strict safety procedures, including oxygen monitoring and controlled handling protocols.<\/p>\n<h4>Operational Execution<\/h4>\n<p>The intervention required:<\/p>\n<ul>\n<li>Specialized cryogenic transport units<\/li>\n<li>On-site LN\u2082 controlled application systems<\/li>\n<li>Coordination between marine engineers, mechanical specialists, and cryogenic technicians<\/li>\n<li>Strict adherence to industrial safety standards<\/li>\n<\/ul>\n<p>The entire process was executed efficiently, significantly reducing vessel downtime and ensuring long-term mechanical reliability.<\/p>\n<h4>Commitment to Speed &amp; Reliability<\/h4>\n<p>This project demonstrates how technical expertise, immediate response capability, and coordinated industrial gas supply are critical in marine and heavy industrial environments.<\/p>\n<p>Through rapid action and technical precision, Roussakis Companies \u2014 via Roussakis Supplies and Roussakis Gases \u2014 successfully delivered a safe, efficient, and high-standard solution.<\/p>\n<hr \/>\n<p>\u03a3\u03b5 \u03bc\u03af\u03b1 \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c0\u03c1\u03bf\u03c4\u03b5\u03c1\u03b1\u03b9\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03b5\u03c0\u03ad\u03bc\u03b2\u03b1\u03c3\u03b7, \u03b5\u03c4\u03b1\u03b9\u03c1\u03b5\u03af\u03b1 \u03b2\u03b9\u03bf\u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ce\u03bd \u03b1\u03b5\u03c1\u03af\u03c9\u03bd \u03b1\u03bd\u03ad\u03bb\u03b1\u03b2\u03b5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c3\u03ba\u03b5\u03c5\u03ae \u03ba\u03cd\u03c1\u03b9\u03b1\u03c2 \u03bd\u03b1\u03c5\u03c4\u03b9\u03ba\u03ae\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03c9\u03bd \u03c4\u03b1\u03ba\u03b9\u03ce\u03bd (\u03b5\u03b4\u03c1\u03ac\u03bd\u03c9\u03bd), \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 10 \u03c4\u03cc\u03bd\u03bf\u03c5\u03c2 \u03c5\u03b3\u03c1\u03bf\u03cd \u03b1\u03b6\u03ce\u03c4\u03bf\u03c5 (LN\u2082) \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03bf\u03bb\u03bf\u03ba\u03bb\u03ae\u03c1\u03c9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1\u03c2 \u03bc\u03b5 \u03b1\u03c0\u03cc\u03bb\u03c5\u03c4\u03b7 \u03b1\u03ba\u03c1\u03af\u03b2\u03b5\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1.<\/p>\n<h4>Urgent Call \u2013 \u0386\u03bc\u03b5\u03c3\u03b7 \u0391\u03bd\u03c4\u03b1\u03c0\u03cc\u03ba\u03c1\u03b9\u03c3\u03b7<\/h4>\n<p>\u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c0\u03c1\u03bf\u03ad\u03ba\u03c5\u03c8\u03b5 \u03ad\u03c0\u03b5\u03b9\u03c4\u03b1 \u03b1\u03c0\u03cc \u03b5\u03c0\u03b5\u03af\u03b3\u03bf\u03c5\u03c3\u03b1 \u03ba\u03bb\u03ae\u03c3\u03b7 (urgent call), \u03cc\u03c0\u03bf\u03c5 \u03b1\u03c0\u03b1\u03b9\u03c4\u03ae\u03b8\u03b7\u03ba\u03b5 \u03ac\u03bc\u03b5\u03c3\u03b7 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u03c0\u03b1\u03c1\u03ad\u03bc\u03b2\u03b1\u03c3\u03b7 \u03c0\u03c1\u03bf\u03ba\u03b5\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03bd\u03b1 \u03b1\u03c0\u03bf\u03c6\u03b5\u03c5\u03c7\u03b8\u03b5\u03af \u03c0\u03b1\u03c1\u03b1\u03c4\u03b5\u03c4\u03b1\u03bc\u03ad\u03bd\u03bf downtime \u03ba\u03b1\u03b9 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03c3\u03b9\u03b1\u03ba\u03ae \u03b4\u03b9\u03b1\u03ba\u03bf\u03c0\u03ae.<\/p>\n<p>\u039b\u03cc\u03b3\u03c9 \u03c4\u03b7\u03c2 \u03b1\u03bc\u03b5\u03c3\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2, \u03c4\u03b7\u03c2 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b5\u03be\u03b5\u03b9\u03b4\u03af\u03ba\u03b5\u03c5\u03c3\u03b7\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b4\u03c5\u03bd\u03b1\u03c4\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03b1\u03c7\u03b5\u03af\u03b1\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7\u03c2, \u03c4\u03bf project \u03b1\u03bd\u03b1\u03c4\u03ad\u03b8\u03b7\u03ba\u03b5 \u03c3\u03c4\u03b9\u03c2 Roussakis Companies, \u03ba\u03b1\u03b9 \u03c3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03b1 \u03c3\u03c4\u03b9\u03c2:<\/p>\n<ul>\n<li>Roussakis Supplies<\/li>\n<li>Roussakis Gases<\/li>\n<\/ul>\n<p>\u0397 \u03c3\u03c5\u03bd\u03c4\u03bf\u03bd\u03b9\u03c3\u03bc\u03ad\u03bd\u03b7 \u03b4\u03c1\u03ac\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b7 \u03ac\u03bc\u03b5\u03c3\u03b7 \u03b4\u03b9\u03b1\u03b8\u03b5\u03c3\u03b9\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1 \u03b5\u03be\u03bf\u03c0\u03bb\u03b9\u03c3\u03bc\u03bf\u03cd \u03ba\u03b1\u03b9 \u03c5\u03b3\u03c1\u03bf\u03cd \u03b1\u03b6\u03ce\u03c4\u03bf\u03c5 \u03b4\u03b9\u03b1\u03c3\u03c6\u03ac\u03bb\u03b9\u03c3\u03b1\u03bd \u03cc\u03c4\u03b9 \u03b7 \u03b5\u03c0\u03b9\u03c3\u03ba\u03b5\u03c5\u03ae \u03c0\u03c1\u03b1\u03b3\u03bc\u03b1\u03c4\u03bf\u03c0\u03bf\u03b9\u03ae\u03b8\u03b7\u03ba\u03b5 \u03c7\u03c9\u03c1\u03af\u03c2 \u03ba\u03b1\u03b8\u03c5\u03c3\u03c4\u03ad\u03c1\u03b7\u03c3\u03b7.<\/p>\n<h4>\u0397 \u03a4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ae \u039b\u03cd\u03c3\u03b7: \u039a\u03c1\u03c5\u03bf\u03b3\u03b5\u03bd\u03b9\u03ba\u03ae \u03a3\u03c5\u03c3\u03c4\u03bf\u03bb\u03ae \u039c\u03b5\u03c4\u03ac\u03bb\u03bb\u03bf\u03c5<\/h4>\n<p>\u0397 \u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b1 \u03b1\u03c6\u03bf\u03c1\u03bf\u03cd\u03c3\u03b5 \u03b1\u03bd\u03c4\u03b9\u03ba\u03b1\u03c4\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae \u03bc\u03b5\u03b3\u03ac\u03bb\u03c9\u03bd \u03b5\u03be\u03b1\u03c1\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b1\u03ba\u03b9\u03ce\u03bd \u03c4\u03b7\u03c2 \u03ba\u03cd\u03c1\u03b9\u03b1\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03ae\u03c2. \u039f\u03b9 \u03b9\u03b4\u03b9\u03b1\u03af\u03c4\u03b5\u03c1\u03b1 \u03bc\u03b9\u03ba\u03c1\u03ad\u03c2 \u03b1\u03bd\u03bf\u03c7\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03bf\u03b9 \u03c5\u03c8\u03b7\u03bb\u03ad\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ad\u03c2 \u03b1\u03c0\u03b1\u03b9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03b4\u03b5\u03bd \u03b5\u03c0\u03ad\u03c4\u03c1\u03b5\u03c0\u03b1\u03bd \u03c7\u03c1\u03ae\u03c3\u03b7 \u03c3\u03c5\u03bc\u03b2\u03b1\u03c4\u03b9\u03ba\u03ce\u03bd \u03bc\u03b5\u03b8\u03cc\u03b4\u03c9\u03bd \u03b8\u03ad\u03c1\u03bc\u03b1\u03bd\u03c3\u03b7\u03c2.<\/p>\n<p>\u0395\u03c0\u03b9\u03bb\u03ad\u03c7\u03b8\u03b7\u03ba\u03b5 \u03b7 \u03ba\u03c1\u03c5\u03bf\u03b3\u03b5\u03bd\u03b9\u03ba\u03ae \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf\u03c2:<\/p>\n<ul>\n<li>\u03a8\u03cd\u03be\u03b7 \u03b5\u03be\u03b1\u03c1\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd \u03c3\u03c4\u03bf\u03c5\u03c2 -196\u00b0C \u03bc\u03b5 \u03c5\u03b3\u03c1\u03cc \u03ac\u03b6\u03c9\u03c4\u03bf<\/li>\n<li>\u0395\u03bb\u03b5\u03b3\u03c7\u03cc\u03bc\u03b5\u03bd\u03b7 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae \u03c3\u03c5\u03c3\u03c4\u03bf\u03bb\u03ae \u03b3\u03b9\u03b1 \u03b1\u03ba\u03c1\u03b9\u03b2\u03ae \u03c4\u03bf\u03c0\u03bf\u03b8\u03ad\u03c4\u03b7\u03c3\u03b7<\/li>\n<li>\u0395\u03bb\u03b1\u03c7\u03b9\u03c3\u03c4\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ce\u03bd \u03ba\u03b1\u03c4\u03b1\u03c0\u03bf\u03bd\u03ae\u03c3\u03b5\u03c9\u03bd<\/li>\n<li>\u0391\u03c0\u03cc\u03bb\u03c5\u03c4\u03b7 \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae \u03bc\u03b5\u03c4\u03ac \u03c4\u03b7\u03bd \u03b5\u03c0\u03b1\u03bd\u03b1\u03c6\u03bf\u03c1\u03ac \u03c3\u03b5 \u03b8\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1 \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03bf\u03c2<\/li>\n<\/ul>\n<p>\u03a3\u03c5\u03bd\u03bf\u03bb\u03b9\u03ba\u03ac \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03ae\u03b8\u03b7\u03ba\u03b1\u03bd 10 \u03c4\u03cc\u03bd\u03bf\u03b9 \u03c5\u03b3\u03c1\u03bf\u03cd \u03b1\u03b6\u03ce\u03c4\u03bf\u03c5, \u03bc\u03b5 \u03b1\u03c5\u03c3\u03c4\u03b7\u03c1\u03ae \u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03c0\u03c1\u03c9\u03c4\u03bf\u03ba\u03cc\u03bb\u03bb\u03c9\u03bd \u03b1\u03c3\u03c6\u03b1\u03bb\u03b5\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c0\u03b1\u03c1\u03b1\u03ba\u03bf\u03bb\u03bf\u03cd\u03b8\u03b7\u03c3\u03b7 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03c9\u03bd \u03bf\u03be\u03c5\u03b3\u03cc\u03bd\u03bf\u03c5.<\/p>\n<h4>\u0395\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03c3\u03b9\u03b1\u03ba\u03ae \u03a5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7<\/h4>\n<p>\u0397 \u03b5\u03c0\u03ad\u03bc\u03b2\u03b1\u03c3\u03b7 \u03c0\u03b5\u03c1\u03b9\u03bb\u03ac\u03bc\u03b2\u03b1\u03bd\u03b5:<\/p>\n<ul>\n<li>\u0395\u03be\u03b5\u03b9\u03b4\u03b9\u03ba\u03b5\u03c5\u03bc\u03ad\u03bd\u03b1 \u03ba\u03c1\u03c5\u03bf\u03b3\u03b5\u03bd\u03b9\u03ba\u03ac \u03b2\u03c5\u03c4\u03af\u03b1 \u03bc\u03b5\u03c4\u03b1\u03c6\u03bf\u03c1\u03ac\u03c2<\/li>\n<li>\u03a3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03b5\u03bb\u03b5\u03b3\u03c7\u03cc\u03bc\u03b5\u03bd\u03b7\u03c2 \u03c0\u03b1\u03c1\u03bf\u03c7\u03ae\u03c2 LN\u2082 \u03b5\u03c0\u03af \u03c4\u03cc\u03c0\u03bf\u03c5<\/li>\n<li>\u03a3\u03c5\u03bd\u03c4\u03bf\u03bd\u03b9\u03c3\u03bc\u03cc \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ce\u03bd \u03bd\u03b1\u03c5\u03c4\u03b9\u03bb\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ce\u03bd \u03ba\u03c1\u03c5\u03bf\u03b3\u03b5\u03bd\u03b9\u03ba\u03ce\u03bd \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ce\u03bd<\/li>\n<li>\u03a4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03b1\u03c5\u03c3\u03c4\u03b7\u03c1\u03ce\u03bd \u03c0\u03c1\u03bf\u03c4\u03cd\u03c0\u03c9\u03bd \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1\u03c2<\/li>\n<\/ul>\n<p>\u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03bf\u03bb\u03bf\u03ba\u03bb\u03b7\u03c1\u03ce\u03b8\u03b7\u03ba\u03b5 \u03b5\u03bd\u03c4\u03cc\u03c2 \u03c3\u03c4\u03b5\u03bd\u03bf\u03cd \u03c7\u03c1\u03bf\u03bd\u03bf\u03b4\u03b9\u03b1\u03b3\u03c1\u03ac\u03bc\u03bc\u03b1\u03c4\u03bf\u03c2, \u03bc\u03b5\u03b9\u03ce\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c3\u03b7\u03bc\u03b1\u03bd\u03c4\u03b9\u03ba\u03ac \u03c4\u03bf\u03bd \u03c7\u03c1\u03cc\u03bd\u03bf \u03b5\u03ba\u03c4\u03cc\u03c2 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An Urgent Call \u2013 Immediate Response The project originated from an urgent call, where immediate technical intervention was [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":122307,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3557],"tags":[],"class_list":["post-122371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nea-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rapid Cryogenic Intervention: 10 Tons of Liquid Nitrogen Used for Main Engine Bearing Repair - ROUSSAKIS SUPPLIES<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/roussakis.com.gr\/en\/nea-en\/rapid-cryogenic-intervention-10-tons-of-liquid-nitrogen-used-for-main-engine-bearing-repair\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rapid Cryogenic Intervention: 10 Tons of Liquid Nitrogen Used for Main Engine Bearing Repair - ROUSSAKIS SUPPLIES\" \/>\n<meta property=\"og:description\" content=\"In a high-priority technical operation, an industrial gas company successfully undertook the repair of a vessel\u2019s main engine and engine bearings (chocks), utilizing 10 tons of liquid nitrogen (LN\u2082) to complete the project with precision and speed. 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