The development of internal repair and rehabilitation techniques for cast iron joints and small diameter steel pipe

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6773442

Matsuzaki, M; Yasui, K; Tsuji, T

Osaka Gas Co., Ltd. and Toho Gas Co., Ltd. have accomplished trenchless repair-rehabilitation techniques for cast iron mains, branches, services and house pipes as complete systems in order to maintain its buried pipelines efficiently. An outline of these systems is presented in this paper. Osaka Gas is the second largest and Toho Gas is the third largest gas company in Japan, both gas companies have 5,800,000 customers and pipelines extending approximately to 52,000 km. To maintain such gas pipelines whose length is much more longer than the circumference of the earth, a large amount of investment is required, because excavation of existing pipelines has become more and more difficult. In such a situation, it has become urgent to develop trenchless techniques to repair gas pipelines and to prevent leakage. From these viewpoints Osaka Gas and Toho Gas have developed several complete, internal repair-rehabilitation techniques for cast iron mains, branches, services, and house pipes.

• OSTI ID: 6773442
• Report Number(s): CONF-880603-
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
CARBIDES
CARBON COMPOUNDS
CAST IRON
ENERGY SOURCES
ENERGY SYSTEMS
FABRICATION
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IRON ALLOYS
IRON BASE ALLOYS
IRON CARBIDES
IRON COMPOUNDS
JOINTS
LEVELS
MAINTENANCE
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
PIPE JOINTS
PIPELINES
PIPES
REPAIR
RETROFITTING
STEELS
TRANSITION ELEMENT COMPOUNDS
TRANSPORT
UNDERGROUND