EP 0399111 A1 19901128 - Cathodic protection of subterranean pipes.
Title (en)
Cathodic protection of subterranean pipes.
Title (de)
Kathodischer Schutz von unterirdischen Rohren.
Title (fr)
Protection cathodique de tuyaux souterrains.
Publication
Application
Priority
GB 8727078 A 19871119
Abstract (en)
Cathodic protection is provided to a subterranean pipe (1) by the known method of making a small (non-man-entry) excavation to expose the top surface of the pipe, descaling and/or abrading the exposed pipe surface using tools (T1, T2) working from ground level (10), fixing an electrical conductor to the prepared pipe surface and connecting the conductor to a sacrificial anode. The invention is concerned with the provision of a liner sleeve (3) in the excavation, having near its lower end a transverse member (4) with an aperture (6) which locates and guides the tools. The vertical position of the member (4) can be adjusted.
IPC 1-7
IPC 8 full level
C23F 13/02 (2006.01)
CPC (source: EP)
C23F 13/02 (2013.01)
Citation (search report)
- [AD] US 3869361 A 19750304 - JENKINS JOHN C
- [AD] GB 2185916 A 19870805 - WATER RES CENTRE
Designated contracting state (EPC)
DE FR SE
DOCDB simple family (publication)
GB 2212514 A 19890726; GB 2212514 B 19920708; GB 8727078 D0 19871223; EP 0399111 A1 19901128
DOCDB simple family (application)
GB 8727078 A 19871119; EP 89305190 A 19890523