Supporting the storage of energy resources.
RAIZNEXT provides integrated support—from basic planning to design, manufacturing, construction, and post-operation maintenance—for petroleum refining plants, as well as petrochemical plants, chemical plants, oil depots, and other tank facilities.
To pursue a carbon-neutral future, we are also engaged in technical research of tanks for next-generation energy sources such as liquefied natural gas (LNG) and liquefied hydrogen.
With a proven track record of constructing approximately 5,300 tanks, RAIZNEXT provides comprehensive support for optimizing tank life cycles.
We hold certifications and permits covering diverse industries and equipment.
- High Pressure Gas Safety Act (Japan) Ministry Certified Piping
- High Pressure Gas Safety Act (Japan)
The High Pressure Gas Safety Institute of Japan Certified Earthquake-Resistant Structural Calculation Programs (Self-Supporting Tower with Skirt / Spherical Tank / Cylindrical Tank with Flat-Bottom) - ISO 9001 Certification
- PQR of High Pressure Gas Safety Act
- PQR of Gas Business Act
- PQR of Fire Service Act
RAIZNEXT’s Strengths
Offering integrated services from construction to maintenance 
Constructed approx. 5,300 tanks to date 
Quality assurance system at our own factories 
Unique services and construction methods to meet diverse needs
Total Tank Services
As a tank manufacturer and construction company with advanced technical capabilities and extensive experience, we solve a wide range of problems spanning construction, modification, and maintenance operations.
Design
We provide optimal support for each step of the design process.
During the quotation stage, we draw up a conceptual design based on the inquiry specifications to present a realistic plan that takes into account cost, delivery schedule, and regulatory compliance. After receiving an order, we make a detailed design, analyze how strong the tank structure should be, and provide technical support for design-related matters to ensure reliable construction.
We are also enhancing design accuracy by leveraging technologies such as 3D measurement and CAE analysis; standardizing design and construction techniques for special tanks; collecting information on regulatory changes; and generating 2D/3D drawings from laser measurement data.
Manufacturing
We conduct inspections at our factories (Isogo/Chiba) required for legal compliance and also produce tank components such as side plates, roofing materials, and stairs.
At the Chiba Factory, we manufacture various tanks (petroleum, cryogenic), containers, vessels, prefabricated piping, and welded structures such as steel frames and bridges.
New Construction and Renovation
From geological surveying to final inspection of the completed tank, we use an integrated system to design and construct the tank’s foundation, groundwork and main structure.
We also accommodate particular needs such as high-mix low-volume storage, mixed-type storage in the same tank, and structural modifications, and perform modification work on existing tanks to make them more efficient and versatile.
Repair and Maintenance
RAIZNEXT handles maintenance for all types of tanks—floating roof, cone roof, dome roof, spherical, underground, etc.—enabling precise, high-quality construction.
To select the optimal maintenance method, we first establish an inspection plan for comprehensive diagnostics, then conduct a multifaceted review based on the inspection results. For tank diagnostics, we use various analytical techniques to meticulously check its conditions. For example, based on high-precision analysis, we examine how issues like corrosion and differential settlement will impact the tank’s strength and safety.
Furthermore, when a tank malfunctions, we conduct analyses with CAE and 3D measurement technology to devise solutions.
Construction Methods and Services
Leveraging years of research and accumulated technology, we have developed various proprietary construction methods for tank construction and repair.
To renovate an existing tank, we propose from various options the optimal construction method tailored to its condition. This proposal accounts for challenging work environments, including those where differential settlement has occurred, heavy machinery cannot be installed, or large-scale scaffolding cannot be erected.
We also use automated welding machines to increase work efficiency and, by effect, shorten lead times and improve quality.
For more details on our tank construction services and methods, please refer to the RAIZNEXT Tank Catalog.
See also
Maintenance Business
We provide integrated support from daily maintenance to turnaround work for various types of plants. We provide maintenance services in a wide range of areas, including various types of equipment, tanks, piping, instrumentation/electrical devices, rotating machinery, and civil engineering/construction.
Engineering Business
We provide integrated support from planning to construction of new plants and modification/renovation of existing plants. We have experience serving a wide variety of industries, including petrochemicals, general chemicals, medical, and food.