In a steam system, the cost of not performing maintenance rarely shows up as a repair bill. It appears earlier\u2014and silently\u2014in energy consumption. <\/p>\n\n
The scale buildup on the heat exchange surfaces acts as a thermal insulator. A layer just one millimeter thick is enough to require the equipment to use more energy to produce the same steam flow; industry standards place this excess energy consumption at around 2%<\/strong> for every millimeter of deposit. In a generator that operates 4,000 hours a year<\/strong>, that figure is far from negligible. And the process is cumulative: the scale reduces heat transfer, which raises the wall temperature of the heating element or tube, which in turn accelerates the degradation of the heating element itself. When a failure occurs, it is not the cause of the problem but rather its final consequence. <\/p>\n\n The second cost is unscheduled downtime. A steam boiler is rarely just an auxiliary piece of equipment: it powers autoclaves, shrink tunnels, sterilization lines, cooking processes, or cleaning systems. When it shuts down, it doesn\u2019t stop on its own. A dirty level electrode\u2014a fifteen-minute fix if caught in time\u2014can trigger a safety shutdown of an entire line in the middle of a production run. <\/p>\n\n The third is strictly regulatory. Royal Decree 809\/2021 assigns to the user\u2014not the manufacturer or installer\u2014the obligation to retain the equipment\u2019s documentation, keep it in safe working order, and have it undergo the applicable periodic inspections. Equipment without a documented history or with expired inspections is at risk during an inspection by the Department of Industry and, more importantly, when dealing with an insurance company in the event of a claim. <\/p>\n\n The current regulatory framework in Spain is Royal Decree 809\/2021, which approved the Pressure Equipment Regulation and replaced the previous Royal Decree 2060\/2008. Its Complementary Technical Instruction (ITC EP-1) specifically regulates boilers. <\/p>\n\n Article 9 of ITC EP-1 establishes three levels of periodic inspection with increasing frequency and depth:<\/p>\n\n The time periods are calculated from the date of manufacture of the equipment. When that date cannot be reliably verified, the date on the installation certificate is used as a reference. Each successful inspection must be recorded on the periodic inspection plate specified in Annex III of the Regulation and in the equipment\u2019s maintenance record. <\/p>\n\n In addition to the inspections, the user must have the equipment registered in the relevant autonomous community\u2019s facility registry and keep the complete file on file: the EU Declaration of Conformity and CE marking, the instruction manual, electrical and plumbing diagrams, the installation certificate, and records of all inspections and repairs.<\/p>\n\n One nuance that significantly affects practical requirements: not all boilers are subject to the same regulatory requirements. The equipment category is determined in accordance with Directive 2014\/68\/EU (PED) based on the product of the maximum allowable pressure and volume. A compact, low-volume generator may be classified in a lower category\u2014or even below Category I\u2014which, in the latter case, exempts the user from the periodic inspection and registration requirements set forth in Article 9 of the Regulation. This is one of the reasons why a modular design\u2014with several smaller units instead of a single large boiler\u2014not only provides process flexibility but also results in a less burdensome regulatory profile. <\/p>\n\n ITC EP-1 classifies boilers and establishes the cases in which their operation requires direct supervision by an operator certified as an industrial boiler operator. Automatic steam generators, equipped with automatic level and water feed controls and the corresponding low-level and overpressure alarms, are considered to require indirect supervision: they do not require the permanent presence of an operator next to the equipment. It is advisable to verify this classification with the manufacturer before determining the size of the boiler room staff, because the difference between direct and indirect supervision has an annual impact on personnel costs that is much greater than that of maintenance itself. <\/p>\n\n Regulatory requirements set the minimum standard. The maintenance plan that truly preserves the equipment is measured in operating hours, not calendar years. These are the intervals specified by Giconmes in the manual for its NGV series generators: <\/p>\n\n In addition, the operator must perform routine checks at the start of each workday: checking the pressure gauge, ensuring there are no visible leaks, verifying that no alarms are active, and manually operating the safety valve according to the manufacturer\u2019s instructions.<\/p>\n\n One detail about flushing that makes a difference in the long run: it\u2019s best to flush at the start of the workday, not at the end. The replacement water that enters after flushing is rich in dissolved oxygen. If the operation is performed in the afternoon, that water remains inside the pressure vessel all night, at a decreasing temperature and with the equipment shut down\u2014ideal conditions for corrosion. When done in the morning, the equipment goes into service immediately, and the oxygen is degassed during startup. It\u2019s a decision that costs nothing and translates into years of additional service life for the pressure vessel. <\/p>\n\n If there is one single factor that determines the service life of a steam boiler, it is the feedwater. The relevant standard is UNE-EN 12952-12, which establishes the quality requirements for feedwater and boiler water. <\/p>\n\n For standard electric generators, the reference values are a pH at 25 \u00b0C<\/strong> between 10.5<\/strong> and 12<\/strong> and a direct conductivity of 30 \u00b5S\/cm<\/strong> or less. The water must also be supplied at a minimum temperature of 18 \u00b0C<\/strong>; below this threshold, preheating is necessary to prevent thermal shock to the pressure vessel and the heating elements. <\/p>\n\n It is important to be explicit about one point that often leads to warranty disputes: compliance with these requirements is not a recommendation; it is a condition of use. Damage resulting from feeding the equipment with water that does not meet specifications\u2014such as scaling, corrosion, pitting, or perforation of heating elements\u2014is not a manufacturing defect and is not covered by any manufacturer\u2019s warranty. A properly sized water softener or reverse osmosis system, with its own regeneration schedule and periodic analytical monitoring, offers the best return on investment for the entire steam system. <\/p>\n\n Most steam boiler breakdowns are not random: they are the predictable result of maintenance that was neglected months earlier.<\/p>\n\n It is worth pausing to consider the last point. A generator that operates continuously near its capacity limit has no margin for modulation: it enters aggressive warm-up cycles, with pressure fluctuations and a switching frequency that takes a toll on the power components. Sizing the system to operate at around 40\u201350%<\/strong> of rated capacity under normal conditions is not oversizing; it is providing the control margin the system needs to operate stably, resulting in savings on corrective maintenance. <\/p>\n\n A large part of the maintenance plan for a conventional boiler has nothing to do with steam production, but rather with combustion. By electrifying the process, that entire component disappears: <\/p>\n\n Added to this is a point-of-use efficiency of nearly 100%<\/strong> \u2014all the electrical energy consumed is converted into heat\u2014compared to the losses through the flue, blow-offs, and radiation in a combustion boiler, and the opportunity to take advantage of flexibility mechanisms and Energy Savings Certificates (CAE) for the replacement of combustion equipment.<\/p>\n\n Giconmes Ib\u00e9rica has been manufacturing electric steam generators in Zaragoza since 1957<\/strong>. For the maintenance manager, that continuity means something very specific: <\/p>\n\n The NGV (stationary generators, ranging from 3.3<\/strong> to over 180 kW<\/strong>), RGV (mobile steam cleaning equipment), and HGV (high-power industrial boilers) product lines cover applications ranging from the laboratory to the processing plant.<\/p>\n\n If you’re evaluating the actual cost of maintaining your current boiler\u2014or considering replacing it with an electric solution\u2014please contact us, and we’ll go over it with you.<\/p>\n\n According to Article 9 of ITC EP-1 of Royal Decree 809\/2021, periodic inspections are conducted at three levels: Level A annually, Level B every three years, and Level C every six years. The time periods are calculated from the equipment\u2019s date of manufacture. <\/p>\n\n A Level A inspection may be performed by a certified installation company or by the manufacturer certified to do so. Level B and Level C inspections must be performed by a certified inspection agency (OC). <\/p>\n\n Yes. The Regulation applies based on the pressure and volume of the equipment, not on the energy source. However, the resulting PED category determines the actual scope of the obligations, and equipment below Category I is exempt from the periodic inspection and registration requirements of Article 9. <\/p>\n\n It depends on the type of boiler and the applicable monitoring requirements. Automatic boilers with automatic level control and feed, as well as low-level and overpressure alarms, are considered to be under indirect monitoring and do not require the constant presence of an operator. It is advisable to confirm this with the manufacturer for each specific piece of equipment. <\/p>\n\n In Giconmes\u2019 NGV series electric generators, the system is flushed every 40 hours of operation<\/strong>, preferably at the start of the workday rather than at the end, to prevent the replacement water\u2014which is rich in dissolved oxygen\u2014from remaining inside the equipment during downtime.<\/p>\n\n The reference standard is UNE-EN 12952-12. For electric generators, the guideline values are a pH at 25 \u00b0C<\/strong> between 10.5<\/strong> and 12<\/strong> and a direct conductivity of 30 \u00b5S\/cm<\/strong> or less, with a minimum feed temperature of 18 \u00b0C<\/strong>. Compliance is mandatory: damage caused by water that does not meet these specifications is excluded from the manufacturer\u2019s warranty. <\/p>\n\n There is no longer a need for burner maintenance and adjustment, periodic flue gas analysis, soot cleaning and flue inspection, chimney maintenance, or anything related to fuel storage.<\/p>\n\n EU Declaration of Conformity and CE marking, instruction manual, electrical and hydraulic diagrams, installation certificate, proof of registration with the autonomous community, and records of all periodic inspections, repairs, and modifications.<\/p>\n","protected":false},"excerpt":{"rendered":" Why Preventive Maintenance Isn’t Just a Formality In a steam system, the cost of not performing maintenance rarely shows up as a repair bill. It appears earlier\u2014and silently\u2014in energy consumption. The scale buildup on the heat exchange surfaces acts as a thermal insulator. A layer just one millimeter thick is enough to require the equipment […]<\/p>\n","protected":false},"author":11,"featured_media":22858,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-22925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categorizar"],"acf":[],"_links":{"self":[{"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/posts\/22925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/comments?post=22925"}],"version-history":[{"count":1,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/posts\/22925\/revisions"}],"predecessor-version":[{"id":22926,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/posts\/22925\/revisions\/22926"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/media\/22858"}],"wp:attachment":[{"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/media?parent=22925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/categories?post=22925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/giconmes.es\/en\/wp-json\/wp\/v2\/tags?post=22925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}What the Law Requires: RD 809\/2021 and ITC EP-1<\/h2>\n\n
The Three Levels of Inspection<\/h2>\n\n
Level<\/th> Frequency<\/th> Approximate Scope<\/th> Who does it?<\/th><\/tr><\/thead> A<\/td> Annual<\/td> Visual inspection of accessible pressurized parts and verification of safety and control devices while the equipment is in service<\/td> An authorized installation company or the manufacturer authorized as such<\/td><\/tr> B<\/td> Every 3 years<\/td> Internal and external visual inspection, including opening the equipment, and verification of documentation<\/td> Authorized Control Body (OC)<\/td><\/tr> C<\/td> Every 6 years<\/td> Scope of Level B plus hydrostatic pressure test or alternative test<\/td> Authorized Control Body (OC)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n Registration, Documentation, and Category<\/h2>\n\n
The Industrial Boiler Operator<\/h2>\n\n
The Operational Maintenance Plan<\/h2>\n\n
Operation<\/th> Interval<\/th><\/tr><\/thead> Boiler Bleeding<\/td> Every 40 hours of work<\/td><\/tr> Cleaning the Water Filter<\/td> Every 1,500 hours<\/td><\/tr> Cleaning the Boiler and Heating Elements<\/td> Every 1,500 hours<\/td><\/tr> Verification of Automatic Level Filling<\/td> Every 1,500 hours<\/td><\/tr> General inspection and cleaning by specialized personnel<\/td> Annual<\/td><\/tr><\/tbody><\/table><\/figure>\n\n Water quality: the cause of 80% of breakdowns<\/h2>\n\n
Common Malfunctions and Their Root Causes<\/h2>\n\n
Symptom<\/th> Common root cause<\/th> Prevention<\/th><\/tr><\/thead> Increasing warm-up time, higher fuel consumption<\/td> Calcium deposits on heating elements or heat exchange surfaces<\/td> Water Treatment and Cleaning Based on Hours of Service<\/td><\/tr> Shutdown due to low level with a full boiler<\/td> Level electrode or probe with insulating housings<\/td> Electrode cleaning at each inspection; conductivity check<\/td><\/tr> Leaks or dripping from a safety valve<\/td> Seat damaged by dirt or seized due to lack of use<\/td> Periodic manual operation in accordance with the manufacturer’s instructions<\/td><\/tr> Pressure fluctuations, short cycles<\/td> Pressure switch out of calibration or generator operating at the limit of its capacity<\/td> Annual inspection of the pressure switch; select a size with an operating margin<\/td><\/tr> Water hammer on the steam line<\/td> Condensate buildup due to a blocked drain or improper routing<\/td> Inspection of drain valves and pipeline slopes<\/td><\/tr> Water Entrainment with Steam<\/td> Excessive water level, excess dissolved solids, or peak demand exceeding the design capacity<\/td> TDS monitoring and regular flushing<\/td><\/tr> Failure of contactors or solid-state relays<\/td> Excessive switching cycles due to improper oversizing<\/td> Annual electrical inspection; proportional control instead of on\/off control<\/td><\/tr><\/tbody><\/table><\/figure>\n\n What maintenance tasks are eliminated with an electric steam cleaner?<\/h2>\n\n
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How Giconmes Can Help<\/h2>\n\n
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Frequently Asked Questions<\/h2>\n\n
How often must a steam boiler be inspected in Spain?<\/h3>\n\n
Who can perform the periodic inspections?<\/h3>\n\n
Is an electric boiler also subject to Royal Decree 809\/2021?<\/h3>\n\n
Do I need an industrial boiler operator?<\/h3>\n\n
How often should a steam boiler be drained?<\/h3>\n\n
What kind of water does a steam boiler need?<\/h3>\n\n
What maintenance costs are saved by switching from a gas boiler to an electric one?<\/h3>\n\n
What documentation should I keep regarding the equipment?<\/h3>\n\n