[Presenting case studies useful for seismic evaluation] Supporting seismic evaluation and reinforcement work for high-pressure gas storage tanks (spherical tanks, flat-bottomed refrigerated tanks, etc.)!
For high-pressure gas equipment classified as Importance I and Ia, the Ministry of Economy, Trade and Industry has stipulated the formulation of seismic reinforcement plans in the document "On Improving the Seismic Resistance of Existing High-Pressure Gas Facilities (20140519 Commercial Bureau No. 1)." Our company has been advancing seismic evaluations, studies, designs, and construction for numerous LPG storage tanks owned by the Idemitsu Group. In our studies, we applied the latest knowledge in seismic motion evaluation and developed and introduced new high-precision simulations to accurately assess behaviors such as shaking and deformation during an earthquake. Through these efforts, we have contributed to improving the seismic performance and ensuring the safety of high-pressure gas facilities by identifying reinforcement locations and subsequently selecting appropriate construction methods and carrying out reinforcement work. 【Do you have any of these concerns?】 - I want to proceed with seismic evaluation but need advice on how to do so. - There are multiple pieces of equipment that require seismic evaluation, and I want to address them systematically. - The results indicate that there are more reinforcement locations needed than expected. I want to reconfirm if this is really the case. - Area constraints may pose limitations on seismic reinforcement work. Are there any good methods available? Our experienced engineers will propose optimal solutions for seismic reinforcement. Please feel free to consult with us.
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【Main Body Evaluation】 ○ Evaluation of high-pressure gas equipment using a seismic resistance evaluation program (developed in-house) → It is possible to evaluate the seismic resistance of the equipment body and propose reinforcement modification plans. → Detailed evaluation of supporting structural members is possible through FEM analysis (elasto-plastic analysis). 【Foundation Evaluation】 ○ Evaluation based on the latest knowledge regarding seismic motion → Evaluation based on seismic motion considering local faults and ground characteristics is possible. ○ Preliminary investigation for more detailed evaluation of seismic behavior → We will use the existing ground investigation and pile investigation data, but may propose additional investigations depending on the situation. ○ Feasible reinforcement design and on-site construction → In some cases, construction may be difficult due to site conditions, such as additional pile driving in narrow areas, and we will propose the optimal construction method. 【Case Study Introduction】 ○ We received a consultation regarding alternative proposals for reinforcement work considered and proposed by a certain company for high-pressure gas storage tanks (spherical tanks) of a domestic chemical manufacturer. ⇒ Based on the ground characteristics of the area, we conducted simulations and seismic evaluations using the latest knowledge, resulting in the conclusion that reinforcement was unnecessary. ● For more details, please contact us or download the catalog.
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