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Remodel Worn-Out Underground Water Pipes, without Digging the Ground!
2013-01-15
There will be no need to dig the ground and replace worn-out water supply pipes any longer.
SsangYong Engineering & Construction (Chairman&CEO S.Joon, Kim) announced recently that it had developed equipment, in conjunction with Weltech Co., Ltd. (CEO Seongshik Lee) and Water Resources Technology Co., Ltd. (CEO Wonsik Choi), which can remodel (enhance) the inside of water pipes without to replace these mid-sized water pipes (1.1~1.5m in diameter).
When this equipment is ed into the water pipe, it transforms the worn-out pipe into a new one through a 5-step process ? high-pressure cleaning, removal of coating, collection of removed coating, processing of the inside surface, and re-coating of the inside surface.
The equipment has more special features. It prevents damage of the pipe in addition to any noise or dust by introducing the induction heating method (using electric heating cables) for removal of the old coating. It also eliminates any dust or smell by using a closed centrifugal blasting machine for processing of the inside surface.
Using this equipment can prolong the life of water pipes by more than 20 years and save more than 70% on construction costs compared to pipe replacement. Furthermore, there are additional effects such as preventing traffic congestion and the resultant fugitive dust from digging.
It is expected that the equipment will turn out to be very useful, given that out of the water supply pipes nationwide, which are approximately 151,293km-long (as of 2010), there are almost 600km in length of worn-out pipes that have passed their 30 year design life.
Hyun Cho, Executive Director of SsangYong Institute of Construction Technology said, “We developed this equipment with a focus on constructability and for a better environment based on our experience in carrying out the 1st phase enhancement construction (approximately 54km) of the Seoul metropolitan water supply pipes.” He added, “We are reaping great benefits from this equipment, winning the bid to improve the 77km-long worn-out water supply pipes in Kum River.”