{"id":5252,"date":"2026-05-28T23:13:51","date_gmt":"2026-05-28T21:13:51","guid":{"rendered":"https:\/\/www.tisr.sk\/classification-of-pressure-equipment\/"},"modified":"2026-10-22T11:39:02","modified_gmt":"2026-10-22T09:39:02","slug":"classification-of-pressure-equipment","status":"publish","type":"page","link":"https:\/\/www.tisr.sk\/en\/pressure-equipment\/classification-of-pressure-equipment\/","title":{"rendered":"Classification of Pressure Equipment"},"content":{"rendered":"\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-miako8fl-65bdb03601200026b9576a0522ce8a53\">\n.avia-section.av-miako8fl-65bdb03601200026b9576a0522ce8a53{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/www.tisr.sk\/wp-content\/uploads\/2026\/01\/tisr_hero_normy_predpisy_banner.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_1'  class='avia-section av-miako8fl-65bdb03601200026b9576a0522ce8a53 main_color avia-section-default avia-no-border-styling  avia-builder-el-0  el_before_av_section  avia-builder-el-first  odbornici-hero-section avia-full-stretch avia-bg-style-scroll av-minimum-height av-minimum-height-custom av-height-custom  container_wrap fullsize'  data-section-bg-repeat='stretch' data-av_minimum_height_px='300'><div class='container av-section-cont-open' style='height:300px'><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-5252'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-k5570-0c83eb6403b90227e18013db13cfd196 av_one_full  avia-builder-el-1  avia-builder-el-no-sibling  first flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-f4f0s-e0b7716e2eef51159bbb4a8c8eb0ce84\">\n#top .av-special-heading.av-f4f0s-e0b7716e2eef51159bbb4a8c8eb0ce84{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-f4f0s-e0b7716e2eef51159bbb4a8c8eb0ce84 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-f4f0s-e0b7716e2eef51159bbb4a8c8eb0ce84 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-f4f0s-e0b7716e2eef51159bbb4a8c8eb0ce84 av-special-heading-h1 blockquote modern-quote  avia-builder-el-2  el_before_av_textblock  avia-builder-el-first '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Classification of Pressure Equipment<\/h1><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-b72ac-0fa7afa690f1b801fed379117168a324 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><\/div><\/section><\/p><\/div>\n\n<\/div><\/div><\/main><!-- close content main element --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13yhv99-16778dfad3df98ff3db8e28dc9b2a698\">\n.avia-section.av-13yhv99-16778dfad3df98ff3db8e28dc9b2a698{\nbackground-color:#f1f4f8;\nbackground-image:unset;\n}\n<\/style>\n<div id='rozdelenie-plynovych-zariadeni'  class='avia-section av-13yhv99-16778dfad3df98ff3db8e28dc9b2a698 main_color avia-section-default avia-no-border-styling  avia-builder-el-4  el_after_av_section  el_before_av_section  rozdelenie-plynovyh-zariadeni-section avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-5252'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-12ysae5-e91239a660b36ed26c78cb9e26532203\">\n.flex_column.av-12ysae5-e91239a660b36ed26c78cb9e26532203{\nwidth:100%;\n}\n<\/style>\n<div  class='flex_column av-12ysae5-e91239a660b36ed26c78cb9e26532203 av_one_full  avia-builder-el-5  el_before_av_one_full  avia-builder-el-first  first flex_column_div  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-11z52el-fd35ccfe04d49c130d407fb2aacb0cf1\">\n#top .av-special-heading.av-11z52el-fd35ccfe04d49c130d407fb2aacb0cf1{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-11z52el-fd35ccfe04d49c130d407fb2aacb0cf1 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-11z52el-fd35ccfe04d49c130d407fb2aacb0cf1 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-11z52el-fd35ccfe04d49c130d407fb2aacb0cf1 av-special-heading-h2 blockquote modern-quote  avia-builder-el-6  el_before_av_hr  avia-builder-el-first '><h2 class='av-special-heading-tag '  itemprop=\"headline\"  >Classification of Pressure Equipment (PE)<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3mpypp-b208b33934da33d610aa1244935025a8\">\n#top .hr.av-3mpypp-b208b33934da33d610aa1244935025a8{\nmargin-top:0;\nmargin-bottom:20px;\n}\n.hr.av-3mpypp-b208b33934da33d610aa1244935025a8 .hr-inner{\nwidth:100%;\nborder-color:#deb749;\n}\n<\/style>\n<div  class='hr av-3mpypp-b208b33934da33d610aa1244935025a8 hr-custom  avia-builder-el-7  el_after_av_heading  el_before_av_textblock  custom-separator hr-center hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-mpo6ad6b-208454a3c215d011725836524d67cc74 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Designated pressure equipment is divided into groups according to Decree No. 508\/2009 Coll. of the Ministry of Labor, Social Affairs and Family of the Slovak Republic. This classification determines the scope of mandatory tests and requirements for professional competence.<\/p>\n<\/div><\/section><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-y0qtnh-d659020f8b097b22d1fb26a2aee448b6\">\n.flex_column.av-y0qtnh-d659020f8b097b22d1fb26a2aee448b6{\nwidth:100%;\n}\n<\/style>\n<div  class='flex_column av-y0qtnh-d659020f8b097b22d1fb26a2aee448b6 av_one_full  avia-builder-el-9  el_after_av_one_full  avia-builder-el-last  first flex_column_div  column-top-margin'     ><div  class='avia-table av-vne4d9-8de936985f88dec8b46f43f321aff76d main_color avia-pricing-table-container avia_pricing_default  avia-builder-el-10  avia-builder-el-no-sibling  tisr-rovnake-riadky avia-table-1'  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Table\" ><div class=\"pricing-table-wrap\"><ul class='pricing-table '><li class='avia-heading-row'><div class='first-table-item'>Group<\/div><span class='pricing-extra'><\/span><\/li><li class=''>Group A<\/li><li class=''>Group B<\/li><li class=''>Group C<\/li><\/ul><\/div><div class=\"pricing-table-wrap\"><ul class='pricing-table '><li class='avia-heading-row'><div class='first-table-item'>Degree of Hazard<\/div><span class='pricing-extra'><\/span><\/li><li class=''>High<\/li><li class=''>Higher<\/li><li class=''>Lower<\/li><\/ul><\/div><div class=\"pricing-table-wrap\"><ul class='pricing-table '><li class='avia-heading-row'><div class='first-table-item'>Examples of Equipment<\/div><span class='pricing-extra'><\/span><\/li><li class=''>Steam and liquid boilers of classes I to IV, stationary pressure vessels containing hazardous gases, vapors, or liquids, pressure vessels for gas transport (tankers), pressure vessels of mobile fire extinguishers, pipelines for the distribution of hazardous liquids with pressure exceeding 1 MPa<\/li><li class=''>Class V boilers, stationary pressure vessels with a lower safety product, cylinders and drums for gas transport, pressure vessels of portable fire extinguishers, pipelines with pressure up to 1 MPa, safety accessories<\/li><li class=''>Small pressure vessels, air receivers with a low pressure-volume product, hot water boilers with lower output, pipelines with smaller nominal bore, and other pressure equipment that does not meet the criteria for classification into group A or B.<\/li><\/ul><\/div><\/div><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-3403gd-8707f922cc4558bbfb52928e1a725330\">\n.avia-section.av-3403gd-8707f922cc4558bbfb52928e1a725330{\nbackground-color:#f1f4f8;\nbackground-image:unset;\n}\n<\/style>\n<div id='av_section_3'  class='avia-section av-3403gd-8707f922cc4558bbfb52928e1a725330 main_color avia-section-small avia-no-border-styling  avia-builder-el-11  el_after_av_section  el_before_av_section  rozdelenie-plynovyh-zariadeni-section avia-bg-style-scroll container_wrap fullsize'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-5252'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-4yaa8d-3404add49702d05d3c831d897701aee9\">\n.flex_column.av-4yaa8d-3404add49702d05d3c831d897701aee9{\nwidth:100%;\n}\n<\/style>\n<div  class='flex_column av-4yaa8d-3404add49702d05d3c831d897701aee9 av_one_full  avia-builder-el-12  avia-builder-el-no-sibling  first flex_column_div  '     ><p><section  class='av_textblock_section av-mpo6euru-a9b8395c1eccbc1d1926b6b11642e798 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Technical equipment of group A and group B are considered designated pressure technical equipment (Annex No. 1 to Decree No. 508\/2009 Coll.).<\/p>\n<h3>Group A<\/h3>\n<p><strong>Letter a)<\/strong> heated or otherwise heated technical equipment with a risk of overheating, intended for steam production or for heating liquids whose temperature is higher than the boiling point at a pressure of 0.05 MPa:<\/p>\n<ul>\n<li>steam boilers with a nominal steam production rate exceeding 115 t\/h (Class I),<\/li>\n<li>steam boilers with a nominal steam production rate exceeding 50 t\/h up to and including 115 t\/h, and liquid (hot water) boilers with a thermal output exceeding 35 MW (Class II),<\/li>\n<li>steam boilers with a nominal steam production rate exceeding 8 t\/h up to and including 50 t\/h, and liquid (hot water) boilers with a thermal output exceeding 5.8 MW up to and including 35 MW (Class III),<\/li>\n<li>steam boilers with a nominal steam production rate up to and including 8 t\/h, and liquid (hot water) boilers with a thermal output up to and including 5.8 MW (Class IV).<\/li>\n<\/ul>\n<p><strong>Letter b)<\/strong> stationary pressure vessel that:<\/p>\n<ul>\n<li>does not contain hazardous gases, vapors, or liquids with a temperature higher than their boiling point at a pressure of 0.2 MPa, with a volume exceeding 10 liters, and whose product of the volume of the pressure technical equipment in liters and the maximum operating pressure in MPa (hereinafter referred to as \u201csafety product\u201d) is greater than 20 (200); this group also includes a vessel for steam production that is part of a work equipment, if it meets the specified parameters,<\/li>\n<li>contains hazardous gases or hazardous liquids at any temperature, whose maximum allowable pressure is greater than 0.05 MPa, with a volume exceeding 1 liter, and whose safety product is greater than 5 (50).<\/li>\n<\/ul>\n<p><strong>Letter c)<\/strong> pressure vessel for the transport of gases whose critical temperature is lower than 50 \u00b0C, or gases which at 50 \u00b0C have an absolute vapor pressure greater than 0.3 MPa (tankers).<\/p>\n<p><strong>Letter d)<\/strong> pressure vessel of a mobile water fire extinguisher, mobile water fire extinguisher with additives, mobile foam fire extinguisher, and mobile powder fire extinguisher.<\/p>\n<p><strong>Letter e)<\/strong> pipeline with a nominal pipe bore greater than DN 25 for the distribution of hazardous liquid with a maximum allowable pressure exceeding 1 MPa, whose product of the maximum allowable pressure in MPa and the nominal bore DN is greater than 200 (2,000).<\/p>\n<h3>Group B<\/h3>\n<p><strong>Letter a)<\/strong> heated or otherwise heated equipment with a risk of overheating, intended for steam production with a nominal pressure up to and including 0.05 MPa, or for heating liquid at a temperature lower than the boiling point, with a nominal thermal output exceeding 100 kW (Class V).<\/p>\n<p><strong>Letter b)<\/strong> stationary pressure vessel that contains:<\/p>\n<ul>\n<li>non-hazardous gases, vapors, or liquids with a temperature higher than their boiling point at a pressure of 0.05 MPa, with a volume exceeding 1 liter, and whose safety product is greater than 5 (50); this group also includes a vessel for steam production that is part of a work equipment, if it meets the specified parameters,<\/li>\n<li>hazardous gases or hazardous liquids at any temperature, whose maximum allowable pressure is greater than 0.05 MPa, with a volume exceeding 1 liter, and whose safety product is greater than 2.5 (25).<\/li>\n<\/ul>\n<p><strong>Letter c)<\/strong> pressure vessel for the transport of gases whose critical temperature is lower than 50 \u00b0C, or gases which at 50 \u00b0C have an absolute vapor pressure greater than 0.3 MPa, such as cylinders and drums:<\/p>\n<ul>\n<li>cylinders with a volume greater than 0.5 liters, cylindrical or spherical in shape, equipped with a neck at one or both ends, including cylinders containing carbon dioxide dissolved in beverages (Class I),<\/li>\n<li>drums \u2013 welded cylindrical pressure vessels with a volume greater than 100 l, equipped with hoops (Class I).<\/li>\n<\/ul>\n<p><strong>Letter d)<\/strong> pressure vessel of a portable fire extinguisher and pressure vessel of a mobile CO2 fire extinguisher.<\/p>\n<p><strong>Letter e)<\/strong> pipeline:<\/p>\n<ul>\n<li>for the distribution of hazardous liquid with a maximum allowable pressure exceeding 0.05 MPa up to 1 MPa, whose product of the maximum allowable pressure in MPa and the nominal pipe bore DN is 200 (2,000) and greater,<\/li>\n<li>with water vapor as the working medium, whose product of the maximum allowable pressure in MPa and the nominal pipe bore DN is 350 (3,500) and greater, where the nominal pipe bore is greater than DN 100, regardless of expanded sections.<\/li>\n<\/ul>\n<p><strong>Letter f)<\/strong> safety accessories:<\/p>\n<ul>\n<li>that protect pressure technical equipment from exceeding the maximum operating pressure,<\/li>\n<li>ensuring monitoring and adherence to the operating temperature in pressure technical equipment where exceeding or falling below specified limits endangers their safety,<\/li>\n<li>ensuring monitoring of the level and exceeding its boundary limits in pressure technical equipment where exceeding or falling below specified limits endangers their safety,<\/li>\n<li>intended for automatic operation on steam and liquid boilers, for example, for automatic blowdown and descaling, regulation of flow, feedwater, and temperature of superheated and reheated steam and water.<\/li>\n<\/ul>\n<h3>Group C<\/h3>\n<p>Small pressure vessels, air receivers with a low pressure-volume product, hot water boilers with lower output, pipelines with smaller nominal bore, and other pressure equipment that does not meet the criteria for classification into group A or B.<\/p>\n<p><strong>Note:<\/strong> The classification of specific equipment depends on its technical parameters according to Annex No. 1 of Decree No. 508\/2009 Coll.  <\/p>\n<p>Source: Annex No. 1 to Decree No. 508\/2009 Coll.<\/p>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-mumddljf-77aadd17585644cb3b4c1ed10ea0a7e9\">\n#top .hr.hr-invisible.av-mumddljf-77aadd17585644cb3b4c1ed10ea0a7e9{\nheight:40px;\n}\n<\/style>\n<div  class='hr av-mumddljf-77aadd17585644cb3b4c1ed10ea0a7e9 hr-invisible  avia-builder-el-14  el_after_av_textblock  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-d2p3zkc1-fd22af22da78a806993b9269c4517378\">\n.avia-section.av-d2p3zkc1-fd22af22da78a806993b9269c4517378{\nbackground-repeat:no-repeat;\nbackground-image:url(https:\/\/www.tisr.sk\/wp-content\/uploads\/2026\/09\/banner_poradit-scaled-1.jpg);\nbackground-position:50% 50%;\nbackground-attachment:scroll;\n}\n<\/style>\n<div id='av_section_4'  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