We would like to introduce an example of on-site piping replacement work that reduces management burdens!
We received an order for products for the replacement work of elbows with long seam welds, which we supplied several decades ago, for the after-service project at the Nagasaki Plant of Mitsubishi Heavy Industries, Ltd. for their thermal power plant. This project involved the on-site replacement of aging piping used under high temperature and high pressure conditions. However, instead of supplying the same elbows as before, we provided a new product that incorporates many advantages, which was well received. The specifications of the product that were appreciated are as follows: - Seamless elbows to eliminate long seam welds. - To reduce the workload within the engineering manufacturer, a hydraulic pressure test was conducted at Benkan Kiko at a pressure of 1.3 times the design pressure. - To facilitate easy replacement work on-site, lifting fixtures were installed. By conducting the hydraulic pressure test at 1.3 times the design pressure in advance at Benkan Kiko, we can avoid the risk of performing a hydraulic pressure test at 1.3 times the design pressure on aging piping. We have confirmed and experienced effects such as delivery management and workload reduction, and we have received high evaluations, including subsequent orders for after-service projects under the same scheme.
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basic information
Management of on-site replacement work for aging pipes used under high temperature and high pressure conditions can be improved by conducting a water pressure test at Benkan Kiko, which helps to manage delivery times and reduce the risks associated with water pressure testing after replacement on-site. Additionally, if the line is subject to inspection by a welding contractor, it is possible to undergo welding contractor inspection at Benkan Kiko, including the surrounding welds of the elbow and pipes.
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Applications/Examples of results
Examples of achievements: - 90E(L)N PA22 600A 34.0T - 90E(L)N PA24 600A 41.0T - 90E(L)N PA24 450A 82.0T - 90E(L)N PA24 500A 21.0T There are other achievements as well.
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Company information
From residential water supply and hot water piping to massive pipelines in large-scale plants, piping that supports our daily lives is spread throughout the world. Benkankikoh Co., Ltd. is involved in the manufacturing of welded pipe fittings, which are essential components of this piping. We provide optimal products tailored to the piping environment (design and usage conditions, etc.) and construction situations, not only for general building water supply and hot water piping but also for power plants, gas plants, refineries, oil and chemical plants, shipbuilding, and more, where strict quality standards are required.
