EP 1240454 A1 20020918 - LAYING OF UNDERSEA PIPES
Title (en)
LAYING OF UNDERSEA PIPES
Title (de)
VERLEGEN VON UNTERWASSERROHRLEITUNGEN
Title (fr)
POSE DE CONDUITES SOUS-MARINES
Publication
Application
Priority
GB 9904237 W 19991222
Abstract (en)
[origin: WO0150058A1] Method and apparatus for connecting first (102) and second (104) sections of double-walled pipe (10) comprising joining the inner pipes of the first and second sections, sliding the outer pipe of the second section relative to the inner pipe of that section such that it meets the outer pipe of the first section, and welding the outer pipes of the first and second sections. The inner insulation layer can also be translated together with the outer pipe, avoiding the need to insert additional insulation sections. It is particularly preferred that bulkheads (112) are fitted between the outer and inner pipes, the bulkheads comprising resilient annular members compressed longitudinally with respect to the pipe. These bulkheads (112) provide a frictional force which holds the outer (104) and inner pipes (102) in place but which can be overcome to slide the outer pipe relative to the inner. In addition, novel double-walled pipe sections suitable for use in this method are disclosed.
IPC 1-7
IPC 8 full level
F16L 1/18 (2006.01)
CPC (source: EP)
F16L 1/18 (2013.01)
Citation (search report)
See references of WO 0150058A1
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)
WO 0150058 A1 20010712; AU 1868300 A 20010716; BR 9917595 A 20020806; EP 1240454 A1 20020918
DOCDB simple family (application)
GB 9904237 W 19991222; AU 1868300 A 19991222; BR 9917595 A 19991222; EP 99962304 A 19991222