In-place rehabilitation of process sewers
- E.I. DuPont de Nemours and Co., Inc., Wilmington, DE (United States)
The majority of petrochemical manufacturing facilities have thousands of feet of existing underground gravity sewers that convey the site`s industrial wastes to treatment facilities. The integrity of these sewer systems is a serious concern to owners. A potential consequence of leaks is soil and groundwater contamination. Prior to 1992, only two options were available to remedy this situation. The sewer systems could be replaced with either a new dual-walled, monitored underground pipe system via direct bury, or with an above ground pumped system. In 1992, Engineering, in conjunction with several trenchless technology vendors, developed and demonstrated modified relining systems that can rehabilitate existing sewers and result in monitored dual-walled gravity sewer systems. These proven systems have since been enhanced, upgraded, and installed at two operating facilities. With thorough sewer investigation and assessments, industry now has viable, cost effective options to rehabilitate underground chemical process sewers. These upgraded sewer systems provide the environmental security of monitored dual-walled pipe, enhanced flow characteristics, and retain accessibility for maintenance and inspections.
- OSTI ID:
- 253821
- Report Number(s):
- CONF-960156-; ISBN 1-57698-001-4; TRN: IM9630%%272
- Resource Relation:
- Conference: 2. international symposium on the mechanical integrity of process piping, Houston, TX (United States), 30 Jan - 1 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Second international symposium on the mechanical integrity of process piping: Proceedings; Sims, J.R.; Aller, J.E.; Becht, C. IV; Reynolds, J.T.; Salot, W.J.; Sanders, B.J.; Springer, S.P. [eds.]; PB: 420 p.
- Country of Publication:
- United States
- Language:
- English
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