Pressure vessel maintenance and preservation services (maintenance)
We will come to you to ensure the maintenance of your important equipment and machinery! Alternatively, we can pick them up and repair them at our factory!
We provide maintenance and preservation services for pressure vessels used in petroleum refining and petrochemical plants, utilizing the knowledge and technology accumulated over many years in the manufacturing of various pressure vessels. With 60 years of experience in manufacturing pressure vessels for petroleum refining and 50 years of providing maintenance and preservation services, we have a proven track record in manufacturing, repair, modification, and inspection of equipment that meets various domestic and international standards, not only in Japan but also in countries around the world. 【Features of Maintenance and Preservation Services】 ◆ Compliance with various domestic/international standards ◆ On-site inspection and consulting ◆ On-site and factory machining and repair welding ◆ Stress analysis, strength calculations, redesign 【Are you facing these issues?】 ◆ Defects or corrosion have been detected, but appropriate measures are unclear → We propose suitable treatment methods and monitoring periods and methods → Our personnel (inspectors, welders, and machinists) will carry out repairs and inspections ◆ Difficulties in dealing with large equipment by nearby contractors → Repairs will be conducted at our manufacturing facility (Muroran City, Hokkaido) which is equipped with large cranes and various processing equipment ◆ Parts need to be updated, but redesign is challenging → We handle everything from design to procurement to manufacturing, and conduct stress analysis as needed.
basic information
【Customer Achievements】 ■ Major domestic oil refining manufacturers ■ Domestic petrochemical plant manufacturers ■ Overseas oil refining manufacturers ■ Overseas chemical plant manufacturers 【Inspection Technologies】 ■ Various NDE methods (Ultrasonic Testing: UT, Penetrant Testing: PT, Magnetic Particle Testing: MT, Radiographic Testing: RT) ■ Material investigation (composition analysis, replica microstructure observation, hardness measurement) ■ Phased Array ■ TOFD (Time Of Flight Diffraction) ■ FMC (Full Matrix Capture) / TFM (Total Focusing Method) 【Applicable Standards Achievements】 ■ ASME Boiler and Pressure Vessel Code ■ High-Pressure Gas Safety Act - Specific Equipment Inspection Regulations ■ JIS ■ ASTM ■ AISI ■ JPI ■ API Please consult us regarding other standards.
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Applications/Examples of results
【Construction Achievements】 ■ Factory welding repairs for pressure vessel components used in oil refining (ring groove repairs, protective pipe replacements) ■ Production of replacement nozzles for oil refining ■ Non-destructive testing, on-site welding repairs, and modification work for pressure vessels used in oil refining ■ Manufacturing and supply of replacement parts for various pressure vessels (flanges, gaskets, bolts, nuts) ■ Technical guidance: high-pressure piping tightening instruction, supervision of repair and modification work ■ Engineering services: stress analysis (FEM), material evaluation, material investigation, design work ■ Hydrogen embrittlement investigation
