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Do you have any concerns such as clogging in the air piping of the raw water tank? - You have to stop production and clean every time there is a clog, resulting in additional cleaning time and effort. - The power consumption due to air usage is also significant. We propose switching from air agitation to an electric agitation mixer system. This will completely eliminate air piping clogs and reduce power consumption. ◇ Regular cleaning tasks will no longer be necessary, reducing maintenance labor. ◇ The uniformity of agitation will improve, preventing the sedimentation of suspended substances and ensuring stability. ◇ Power consumption will be significantly reduced, providing cost benefits as well. ◇ Equipment troubles will decrease, contributing to stable production operations. We are currently offering free case studies on reviewing the agitation method of the raw water tank.

Do you have any of these concerns regarding the inspection and maintenance of aeration tanks? - The water that used to be brown has become darker. - The DO (dissolved oxygen concentration) is not increasing at all. - There is a strong odor, and it feels like the biological treatment is not working. By updating the diffusers in the aeration tank, we will achieve normal aeration and restore DO levels. ◇ The DO in the aeration tank has returned to normal range. ◇ The activity of microorganisms has returned, stabilizing the color of the treated water. ◇ The odor has been reduced, making wastewater management easier. ◇ We also inspected other aeration piping to prevent recurrence. We are currently offering free case studies on wastewater treatment facilities and aeration tanks.

■What does "nominal diameter" in piping mean? The thickness of piping is managed by a value called "nominal diameter." The nominal diameter is not the actual outer diameter of the pipe itself, but a designation defined by JIS standards. If the nominal diameter is the same, the outer diameter will be the same even if the notation differs. ■What is the difference between A designation and B designation? There are "A designation" and "B designation" for nominal diameters. A designation is based on millimeters, such as "10A" and "20A," while B designation is based on inches, represented as "3/8" and "1." Both refer to pipes with the same outer diameter. ■Why are there two different designations? It is said that this is due to Japanese piping standards being influenced by American standards (inch-based), leading to the parallel use of both millimeter and inch standards. ■What should you be careful about regarding the "common names" you hear on-site? In addition to these two designations, a "common name" that fixes the denominator of the B designation to 8 is also used on-site. "1/8" is referred to as "one-bun," and "1/4" as "two-bun," with the "bun" unit said to originate from the shakkanhō measurement system. It is reassuring to confirm the official nominal diameter when placing orders. Please feel free to consult with us first.

■What is a level gauge used for? A level gauge is a general term for devices that allow the liquid level inside a tank or container to be visually observed from the outside. The boundary between gases and liquids, or between different liquids, is called a "level," and a level gauge is an instrument that measures this level. ■Why is it necessary to check from outside the tank? Many tanks and boilers in petroleum and chemical plants are equipment that cannot be directly looked into. Therefore, level gauges that can safely provide information from the outside are essential, and various types exist depending on the application. ■How do the mechanisms differ by type? 1. Float type: Judged by the position of a float that floats on the liquid surface. 2. Glass tube type: Direct visual observation of the liquid level based on the principle of communicating vessels. 3. Differential pressure type: Detects the pressure difference caused by the height of the liquid level. 4. Capacitance type, ultrasonic type, radar type: Non-contact methods that do not touch the liquid. ■Is the choice of method dependent on conditions? While the differential pressure type has a proven track record, its weakness is that it is prone to errors when the density of the liquid changes. On the other hand, the capacitance type can handle harsh environments of high temperature and pressure, as well as high-viscosity liquids. Selecting the appropriate type based on the tank's pressure, size, temperature, and contents is important. Please feel free to consult us first.

■What is an "Economizer" in the first place? An economizer is a device also referred to as a "coal-saving device" due to its historical use of coal as the main fuel. It is installed in the middle of the exhaust gas piping of a boiler. ■How does it reduce fuel consumption? It works by preheating the water supply to the boiler using the thermal energy from the exhaust gas. If the temperature of the water supply is already high from the start, less heat is required to raise it to the target temperature in the boiler itself, thereby reducing the amount of fuel used. ■Can the reuse of exhaust heat be applied beyond boilers? For example, exhaust gas generated at around 40°C in processes like compressors can also be used as a heat source for another process, leading to a reduction in fuel consumption. The economizer is a prime example of the concept of recovering waste heat by "using heat that was previously discarded." If you are facing issues with energy-saving in your equipment, please feel free to consult us first.

Do you have any concerns about the air piping used for stirring and circulating water in the drainage treatment facility? - Every time there is a blockage, production must be stopped for cleaning, resulting in labor and time for maintenance. - The power consumption due to air usage is also significant. We propose switching from air stirring to an electric stirring mixer method, which allows for direct stirring from inside the tank without using piping, completely eliminating air pipe blockages. ◇ Regular cleaning operations are no longer necessary, reducing maintenance labor. ◇ The uniformity of stirring has improved, with no sedimentation of suspended substances, ensuring stability. ◇ Power consumption has been significantly reduced, providing cost benefits. ◇ Equipment troubles have decreased, contributing to stable production operations. We are currently offering free examples of cases that have improved stirring efficiency, energy savings, and maintenance.

Are you facing issues like changes in the water quality of your wastewater treatment tank, making the treatment ineffective? - The water that used to be brown has become darker. - The DO (dissolved oxygen concentration) is not rising at all. - There is a strong odor, and it feels like the biological treatment is not working. By updating the diffusers in the aeration tank, we can fundamentally solve these problems. ◇ The DO in the aeration tank will recover to normal levels. ◇ The activity of microorganisms will return, stabilizing the color of the treated water. ◇ The odor will be reduced, making wastewater management easier. ◇ We will also inspect other aeration piping to prevent recurrence. Please feel free to consult us for the inspection and maintenance of the aeration tank. We are currently offering free case studies.

Even though they are called pressure vessels, they can be divided into several types depending on their contents and pressure. Understanding the classification reveals the differences in the necessary management. ■ Two main categories based on contents Pressure vessels are broadly divided into two categories based on the nature of their contents. One category contains liquids that generate steam due to temperature rise or reactions. The other category contains gases other than steam, such as regular compressed air. The former corresponds to first-class pressure vessels and small pressure vessels, while the latter corresponds to second-class pressure vessels. ■ Differences between first-class, small, and second-class Both first-class pressure vessels and small pressure vessels are containers that hold liquids (steam) at temperatures exceeding the boiling point at atmospheric pressure. The difference between the two lies in their scale; those with a larger product of maximum allowable pressure and volume are classified as first-class, while smaller ones are classified as small. On the other hand, second-class pressure vessels refer to containers that hold gases with a gauge pressure of 0.2 megapascals or more, regardless of the presence of liquid. Since the inspections and management required differ by type, understanding which category your company's equipment falls into is the first step. For confirmation of your company's pressure vessel classification and guidance on inspection and performance testing, this document provides an explanation. Please download the document!

Among the familiar equipment around us, there are those that work quietly while harboring great power within. Pressure vessels are one such example. ■ What is a pressure vessel? A pressure vessel is a container designed to store gases or liquids at a constant pressure different from atmospheric pressure. In simpler terms, it refers to a container that can maintain a state of pressure higher or lower than atmospheric pressure. They are widely used in various applications, including boilers and manufacturing processes in factories. ■ The dangers behind high convenience The most important thing to be cautious about when handling pressure vessels is their potential danger. Boilers and pressure vessels contain high-temperature, high-pressure contents or flammable materials, which pose risks of explosion or rupture. If a rupture occurs due to aging or other factors, parts of the container or debris can scatter over hundreds of meters. This could lead to a major disaster that affects not only those working nearby but also local residents. Therefore, regular inspections and statutory checks are essential to maintain a healthy state. The procedures for inspecting and testing the performance of pressure vessels are explained in this document. Please download the document!

⬛️ What is water concentration? Water concentration refers to the phenomenon where the concentration of impurities, such as mineral components dissolved in water, becomes higher as moisture evaporates. A familiar example is miso soup. When it is heated and reduced, it becomes thicker and saltier because only the moisture evaporates, leaving the components of the miso intact. Even if the water itself decreases, the dissolved components do not escape and become concentrated. ⬛️ If concentration is left unattended, pipes can clog and iron can rust. The same thing happens in boilers and cooling towers. As operation continues, moisture evaporates and the components in the water become concentrated. If it becomes too concentrated, the components can solidify and adhere to pipes and heat transfer surfaces, causing scale (similar to deposits) and corrosion, which directly leads to decreased thermal efficiency and equipment troubles. Measures such as "blowing down," which involves discharging a portion of the concentrated water and replenishing it with fresh water, and regular water quality management are essential. The approach to water quality management and scale prevention for boilers and cooling towers is explained in this document. Please download the document!

To the maintenance personnel of mold manufacturing companies in the Tokai region, we would like to introduce a case study regarding the review of the stirring method for the raw water tank. The raw materials used for forming paper mold products need to be uniformly stirred and circulated in the raw water tank. Traditionally, an air stirring method was employed; however, the air piping regularly became clogged, necessitating ongoing cleaning efforts. To resolve this issue, we propose switching from air stirring to an electric stirring mixer method. After the switch, we achieved complete elimination of air pipe clogging by stirring directly from inside the tank without using piping. [On-site Challenges] ■ Stopping production for cleaning each time there is a clog ■ Additional labor and time required for cleaning ■ Significant power consumption due to air usage *For more details, please download the PDF or feel free to contact us.

We provide maintenance and performance testing for Class 1 pressure vessels. In maintenance, we carry out open maintenance of boiler flue tubes, open maintenance of safety valves, and pressure settings. Additionally, performance testing is generally conducted with the Class 1 pressure vessels opened, so prior to the performance test, we will perform internal cleaning and disassembly of accessories as part of the open maintenance. Please feel free to contact us when you need our services. 【Maintenance Contents (Partial)】 1. Removal of accessories 2. Internal cleaning of the vessel 3. Cleaning of cover plates, etc. 4. Disassembly and maintenance of safety valves 5. Pressure setting of safety valves *For more details, please download the PDF or feel free to contact us.