{"id":577388,"date":"2026-04-09T08:42:12","date_gmt":"2026-04-09T06:42:12","guid":{"rendered":"https:\/\/www.processoverskott.se\/do-pressure-tanks-need-periodic-inspection\/"},"modified":"2026-05-21T14:02:24","modified_gmt":"2026-05-21T12:02:24","slug":"do-pressure-tanks-need-periodic-inspection","status":"publish","type":"post","link":"https:\/\/www.processoverskott.se\/en\/do-pressure-tanks-need-periodic-inspection\/","title":{"rendered":"Do pressure tanks need periodic inspection?"},"content":{"rendered":"<h2>Periodic inspection of pressure tanks<\/h2>\n<p>Pressurized tanks need to undergo periodic inspection to ensure safe operation and compliance with applicable laws and standards. The inspection is carried out by an accredited inspection body and usually includes checking, for example, welds, material thickness, seals and safety valves. <\/p>\n<p>Process surpluses can provide available documentation for the tank, such as CE marking and in some cases PED documentation. For tanks where full documentation is not available, an inspection can still be carried out, but it may require additional checks or testing. This makes it possible to assess the condition of the tank and ensure that it can be used safely in, for example, the food, chemical and process industries.  <\/p>\n<h2>Function and structure<\/h2>\n<p>Inspection covers both design and function:<\/p>\n<ul>\n<li>Checking weld seams and plate thickness<\/li>\n<li>Inspection of the bottom, walls and reinforcements<\/li>\n<li>Checking pressure and safety valves<\/li>\n<li>Testing of seals and flanges<\/li>\n<li>Documentation of any defects and actions taken<\/li>\n<\/ul>\n<h2>Materials and construction<\/h2>\n<p>Tanks made of stainless steel 304 and acid-proof 316\/316L are often inspected for corrosion, cracking and possible deformation. These factors are important in assessing the condition of the material and whether the tank is suitable for continued use. <\/p>\n<p>For pressurized tanks, specific requirements apply according to current regulations, such as the PED Directive. Any inspection is carried out by an accredited inspection body. <\/p>\n<p>Process surpluses can provide available information on materials, construction and previous use, which can be used as a basis for further assessment.<\/p>\n<h2>Pressurized and atmospheric solutions<\/h2>\n<p>Periodic inspection is mandatory for pressurized tanks. Atmospheric storage tanks do not normally have the same requirements, but can still be checked for material damage and hygienic standards. <\/p>\n<h2>Applications in industry<\/h2>\n<ul>\n<li>Food industry &#8211; pressure vessels for processing and pasteurization<\/li>\n<li>Chemical industry &#8211; acids, bases and solutions in pressure vessels<\/li>\n<li>Pharmaceutical production &#8211; sterile processes under pressure<\/li>\n<li>Water treatment &#8211; pressure vessels and reactors<\/li>\n<\/ul>\n<h2>Technical options and equipment<\/h2>\n<ul>\n<li>Safety valves and pressure gauges<\/li>\n<li>Inspection gaps and sample points<\/li>\n<li>Internal agitators and process equipment<\/li>\n<li>Insulation and reinforcements<\/li>\n<li>Surface treatment and passivation<\/li>\n<\/ul>\n<h2>Volumes and capacity<\/h2>\n<p>Pressure tank inspection can be relevant for tanks of many different sizes, from smaller volumes of around 100 liters up to larger units of 250 000 liters. The need for inspection depends on the design of the tank, its intended use and current operating conditions. <\/p>\n<p>The actual inspection is carried out by an accredited inspection body. Process surpluses can provide available information on tank specifications, such as volume, design, working pressure and design pressure data, as a basis for further assessment. <\/p>\n<h2>Benefits of periodic inspection<\/h2>\n<ul>\n<li>Safe operation and risk minimization<\/li>\n<li>Compliance with PED and CE<\/li>\n<li>Extending the life of tanks<\/li>\n<li>Maintenance planning and documentation<\/li>\n<li>Safety of staff and process<\/li>\n<\/ul>\n<h2>New and used tanks in stock<\/h2>\n<p>Process\u00f6verskott offers both new and used tanks in stock for different types of industrial needs. The used tanks vary in design, condition and documentation level. <\/p>\n<p>Documentation and drawings may be included where available. For older or used tanks, some documentation may be missing, which is common. If necessary, it is possible to carry out inspections or further checks before use.  <\/p>\n<h2>Choosing the right inspection interval<\/h2>\n<p>Inspection intervals for pressure vessels are influenced by several factors, such as the type of vessel, the material, the pressure class and the risk level of the application. Previous use and operating conditions also influence how often inspections may need to be carried out. <\/p>\n<p>Inspection intervals are determined in accordance with current regulations and in consultation with an accredited inspection body.<\/p>\n<p>Process surpluses can provide available information on tank specifications, construction and previous use, which can be used as a basis for further assessment and planning.<\/p>\n<h2>Executive summary<\/h2>\n<p>Pressurized tanks require periodic inspection to comply with applicable regulations and to be used under controlled conditions. In the EU, these requirements are covered by the PED Directive, among others. <\/p>\n<p>Process surplus offers tanks in stainless steel 304 and acid-proof 316\/316L in various designs. Available documentation and information on construction can be used as a basis for planning inspection and continued use. <\/p>\n<p>Documentation is included where available, and is an important part of assessing the suitability of the tank for different types of industrial applications.<\/p>\n<h2>Frequently asked questions about periodic inspection of pressure tanks<\/h2>\n<h3>Do pressure tanks need periodic inspection?<\/h3>\n<p>Yes, pressurized tanks must be checked regularly for welded joints, plate thickness, safety valves and seals. The inspection ensures that the tank can be operated under working and design pressure without risk of leakage or deformation. <\/p>\n<h3>How often should pressure tanks be inspected?<\/h3>\n<p>Inspection intervals for pressure vessels vary depending on several factors, such as the type of vessel, the material, the pressure class and the risk level of the application. Previous use and operating conditions can also affect the frequency of inspection. <\/p>\n<p>Minimum intervals and requirements are set according to applicable regulations, such as the PED Directive, and national regulations. The actual assessment of intervals is done in consultation with an accredited inspection body. <\/p>\n<p>Process surpluses can provide available information on tank specifications and previous use, which can be used as a basis for planning inspections.<\/p>\n<h3>Can used tanks be inspected?<\/h3>\n<p>Yes, in many cases used tanks can be inspected before they are put into service. The inspection itself needs to be carried out by an authorized inspection company. Process surplus can provide information about the tank&#8217;s previous use and condition, and help prepare documentation for a possible inspection. This makes it easier to ensure that the tank meets current requirements for safe use.   <\/p>\n<h3>Which components are checked during the inspection?<\/h3>\n<p>Inspection includes plate thickness, welds, reinforcements, safety valves, seals, flanges and any internal components. This ensures that the tank is whole and safe for operation. <\/p>\n<h3>What standards govern the inspection of pressure tanks?<\/h3>\n<p>Inspection of pressurized tanks is regulated by several different standards and regulations. Within the EU, the PED (Pressure Equipment Directive) is central, while periodic inspection in Sweden is also covered by national regulations, for example from the Swedish Work Environment Authority (AFS). <\/p>\n<p>The inspection itself is carried out by an accredited inspection body in accordance with the applicable requirements.<\/p>\n<p>Process surpluses can contribute with available documentation for tanks, such as CE marking and in some cases documentation according to the PED Directive. When such documentation is available, it can be used to support inspection and further assessment of tank conditions. <\/p><\/p>\n\n<script type=\"application\/ld+json\"> { \u201c@context\u201d: \u201chttps:\/\/schema.org\u201d, \u201c@type\u201d: \u201cFAQPage\u201d, \u201cmainEntity\u201d: [ { \u201c@type\u201d: \u201cQuestion\u201d, \u201cname\u201d: \u201cBeh\u00f6ver trycktankar \u00e5terkommande besiktning?\u201d, \u201cacceptedAnswer\u201d: { \u201c@type\u201d: \u201cAnswer\u201d, \u201ctext\u201d: \u201cJa, trycksatta tankar m\u00e5ste kontrolleras regelbundet f\u00f6r svetsfogar, pl\u00e5ttjocklek, s\u00e4kerhetsventiler och t\u00e4tningar. Besiktningen s\u00e4kerst\u00e4ller att tanken kan drivas under arbetstryck och designtryck utan risk f\u00f6r l\u00e4ckage eller deformation.\u201d } }, { \u201c@type\u201d: \u201cQuestion\u201d, \u201cname\u201d: \u201cHur ofta ska trycktankar besiktas?\u201d, \u201cacceptedAnswer\u201d: { \u201c@type\u201d: \u201cAnswer\u201d, \u201ctext\u201d: \u201cIntervallen beror p\u00e5 tanktyp, material, tryckklass och riskanalys. PED och CE-krav styr minimiintervall, men Process\u00f6verskott rekommenderar anpassade intervall baserat p\u00e5 anv\u00e4ndning och tidigare besiktningsresultat.\u201d } }, { \u201c@type\u201d: \u201cQuestion\u201d, \u201cname\u201d: \u201cKan begagnade tankar besiktas?\u201d, \u201cacceptedAnswer\u201d: { \u201c@type\u201d: \u201cAnswer\u201d, \u201ctext\u201d: \u201cJa, Process\u00f6verskott kontrollerar begagnade tankar och utf\u00e4rdar dokumentation som visar att tanken uppfyller s\u00e4kerhetskrav f\u00f6r \u00e5terkommande drift, vilket g\u00f6r dem s\u00e4kra f\u00f6r industriella processer.\u201d } }, { \u201c@type\u201d: \u201cQuestion\u201d, \u201cname\u201d: \u201cVilka komponenter kontrolleras vid besiktning?\u201d, \u201cacceptedAnswer\u201d: { \u201c@type\u201d: \u201cAnswer\u201d, \u201ctext\u201d: \u201cBesiktning omfattar pl\u00e5ttjocklek, svetsfogar, f\u00f6rst\u00e4rkningar, s\u00e4kerhetsventiler, t\u00e4tningar, fl\u00e4nsar och eventuella interna komponenter. Detta garanterar att tanken \u00e4r hel och s\u00e4ker f\u00f6r drift.\u201d } }, { \u201c@type\u201d: \u201cQuestion\u201d, \u201cname\u201d: \u201cVilka standarder styr besiktning av trycktankar?\u201d, \u201cacceptedAnswer\u201d: { \u201c@type\u201d: \u201cAnswer\u201d, \u201ctext\u201d: \u201cBesiktningen styrs av PED-direktivet och CE-standarder. Process\u00f6verskott s\u00e4kerst\u00e4ller att alla tankar, nya och begagnade, uppfyller dessa krav vid \u00e5terkommande inspektion.\u201d } } ] }  <\/script>\n","protected":false},"excerpt":{"rendered":"<p>Periodic inspection of pressure tanks Pressurized tanks need to undergo periodic inspection to ensure safe operation and compliance with applicable laws and standards. The inspection is carried out by an accredited inspection body and usually includes checking, for example, welds, material thickness, seals and safety valves. Process surpluses can provide available documentation for the tank, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":577199,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30554,30563],"tags":[],"class_list":["post-577388","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-faq","category-pressure-security","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"_links":{"self":[{"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/posts\/577388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/comments?post=577388"}],"version-history":[{"count":3,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/posts\/577388\/revisions"}],"predecessor-version":[{"id":577400,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/posts\/577388\/revisions\/577400"}],"wp:attachment":[{"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/media?parent=577388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/categories?post=577388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.processoverskott.se\/en\/wp-json\/wp\/v2\/tags?post=577388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}