Corrosion protection for subsea lines

Details Corrosion protection for subsea lines Corrosion protection for subsea lines

1997-08-01

2000-01-11

Kashnikow, Andres

Pipes and tubular conduits

Flexible

Spirally wound material

174 47, 405158, F16L 1108, F16L 1112, G02B 644

Patent

active

060124954

ABSTRACT:
The present invention relates to a subsea line comprising a number of fluid/gas conducting steel tubes (1, 3) and possibly other elongated elements (4) like electrical conductors and cables enclosed, and containing elongated sacrificial elements. At least one of the tubes (1, 3) is made of carbon steel and that at least one sacrificial element (2, 5) which is constituted by one or more tapes or strips made of a material less noble than steel is in substantially continuous contact with the surface(s) of at least one carbon steel tube. The line may include a sea water permeable outer cover (6).

REFERENCES:
patent: 3889716 (1975-06-01), Linhart
patent: 4143540 (1979-03-01), Peterson et al.
patent: 4765711 (1988-08-01), Obst
patent: 5275209 (1994-01-01), Sugier et al.
patent: 5343738 (1994-09-01), Skaggs
patent: 5349989 (1994-09-01), Legallais
patent: 5362921 (1994-11-01), Birkelund et al.

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