Cured-in-place lining renews gas mains

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Pipeline and Gas Journal

OSTI ID:93089

Andraka, T M ^[1]

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1. PECO Energy Co., Philadelphia, PA (United States)

In July 1993, the Gas Research Institute (GRI) recognized the need to study trenchless pipeline renewal methods. Ten utilities were chosen to pilot pipeline rehabilitation projects using a variety of liner systems. These rehabilitation methods were divided into two categories: (1) modified sliplining systems and, (2) cured-in-place soft lining systems. The soft lining category included the Amex 2000 and Paltem processes. The latter was PECO Energy Co.`s liner of choice for the pilot project. The Paltem method was jointly developed in 1980 by Ashimori Industry Co., Ltd., and Tokyo Gas Co., Ltd., for rehabilitation of gas pipelines. By 1995, over 400 miles of gas main, ranging in size from 2-in. to 40-in. in diameter have been rehabilitated by this method. Pipeline renewal with this method features insertion of a resin-impregnated, flexible seal hose into an existing gas main. The seal hose, which is composed of a woven jacket and an elastomeric skin, is inverted into the pipeline by the use of air pressure.

• OSTI ID: 93089
• Journal Information: Pipeline and Gas Journal, Journal Name: Pipeline and Gas Journal Journal Issue: 6 Vol. 222; ISSN PLGJAT; ISSN 0032-0188
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
42 ENGINEERING
INSTALLATION
LINERS
LINING PROCESSES
MATERIALS
NATURAL GAS INDUSTRY
PIPELINES
RETROFITTING