EP 1092901 A3 20030402 - Method for removing and/or replacing an underground conduit
Title (en)
Method for removing and/or replacing an underground conduit
Title (de)
Verfahren zum Beseitigen und/oder Ersetzen einer unterirdischen Rohrleitung
Title (fr)
Méthode pour enlever et/ou remplacer une tuyauterie enterrée
Publication
Application
Priority
GB 9924112 A 19991013
Abstract (en)
[origin: EP1092901A2] There is disclosed a method and apparatus for removal and for replacement of pipes such as underground pipes, and particularly, though not exclusively a method and apparatus for removal of lead water supply pipe and, if required, its replacement with a plastics water supply pipe. The invention provides a method of economically removing buried lead pipe from the ground and, if required, for subsequent installation of a plastics pipe more economically than has previously been known. Accordingly the present invention provides a method of removing a buried pipe (15) from the ground (10) comprising: (i) injecting a curable resin (15) into the pipe (15) so as to at least partly fill the pipe (15) with resin; (ii) allowing or causing the resin (15) to cure; and (iii) applying a tensile load to one end of the resin (15)/pipe (5) composite whereby the resin (15)/pipe (5) composite is pulled from the ground (10) in a generally axial direction. <IMAGE>
IPC 1-7
IPC 8 full level
E21B 7/30 (2006.01); E21B 23/00 (2006.01); E21B 31/00 (2006.01)
CPC (source: EP)
E21B 7/30 (2013.01); E21B 23/00 (2013.01); E21B 31/007 (2013.01)
Citation (search report)
- [XAY] WO 9210701 A1 19920625 - TATE PIPE LINING PROCESSES LIM [GB]
- [A] US 5482404 A 19960109 - TENBUSCH II ALBERT A [US]
- [A] US 5163520 A 19921117 - GIBSON PAUL N [US], et al
- [AY] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 09 30 September 1996 (1996-09-30)
- [A] PATENT ABSTRACTS OF JAPAN vol. 005, no. 193 (M - 101) 9 December 1981 (1981-12-09)
- [A] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06 30 April 1998 (1998-04-30)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1092901 A2 20010418; EP 1092901 A3 20030402; GB 0025204 D0 20001129; GB 2358449 A 20010725; GB 9924112 D0 19991215
DOCDB simple family (application)
EP 00309017 A 20001013; GB 0025204 A 20001013; GB 9924112 A 19991013