ELS used SAERTEX multiCom® LP, Milliken products to fully rehabilitate aging sewer pipes at Milliken Chemical’s Dewey plant.
By Rachael S. Davis, Executive Editor
Last summer, Jacksonville, Fla.-based Engineered Lining Systems (ELS) completed a renovation of high density polyethylene (HDPE) sewer pipes at Milliken Chemical’s Dewey plant in Inman, S.C. The plant — in operation since 1969 manufacturing textile chemicals, colorants and other specialty compounds — features a series of sewers for collecting and directing waste chemicals for treatment and processing. In 2000, Milliken installed HDPE pipes to repair many of the older sewer lines, but the high temperature waste entering the pipes and manhole liners causes continual expansion and contraction of the pipes, which was beginning to raise environmental concerns.
SAERTEX-LINER®, an ultraviolet (UV) curable glass reinforced plastic (GRP) stitch bonded liner fabric manufactured by Huntersville, N.C.-based SAERTEX multiCom® LP, a division of Germany-based SAERTEX GmbH & Co. KG, was chosen for the rehabilitation project.
SAERTEX-LINER may be impregnated with a polyester or vinyl ester resin prior to delivery. There is no need for on-site use of chemicals, and the product may be cured using UV light, eliminating the need for any steam or hot water during the installation process. The resin impregnated liner is pulled into the pipes using a winch, expanded with air to keep it open and then cured using a light train equipped with UV lightbulbs. It’s a low-risk installation process that allows the pipes to quickly return to service, according to Mark R. Hallett, general manager, SAERTEX multiCom LP.
One of the product’s major benefits is its high strength. “There are many types of liners out there, but some of the less strong liners in the marketplace test between 150,000 to 350,000 psi,” Hallett said. “The SAERTEX-LINER has an e-modulus of 1.78 million psi. It’s a very high strength and stable — exhibiting no expansion or contraction — thin profile structural liner.”
In addition, the environmentally safe SAERTEX-LINER has a useful life of more than 70 years. “The products are tested for 10,000 hours and 20,000 hours, and using this data, we can extrapolate the useful life to estimate how long the product will last,” Hallett said. “Our studies concluded the average technical service life of the liner is upwards of 70 years.”
在杜威工厂，EL最初用Saertex UV固化的GRP衬里衬有两条约300英尺长的12英寸管道。此外，将Milliken的GeoSpray®系统（一种高性能纤维增强的地质聚合物砂浆）喷洒在一个人孔中以有效密封该系统。一旦两种产品到位，就检查了安装，以确保系统有效地运行。然后，下水道系统的其余部分进行了修复。ELS完成了该项目 - 在45天内修理了超过1,700个线性英尺12到36英寸宽的HDPE管，并清洁19个手机，然后喷洒了Geospray。在安装过程中，不需要关闭工厂，杜威设施能够维持完整的生产水平。
“The ELS field team successfully tackled the logistic challenges of this project and managed to finish ahead of schedule,” said James Macko, ELS production manager. “Our crews went above and beyond working closely with personnel to ensure the plant was not shutdown during the entirety of the project.”
CONTACTS:
For more information about the installation, contact Nancy Freeman, +904-759-3860, nfreeman@engineeredlining.com, engineeredlining.com
For more information about SAERTEX-LINER®, contact SAERTEX multiCom® LP, +704-584-4059, multicom@saertex.com, saertex-multicom.de/en
July/August 2018
