Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1986-07-23
1988-02-16
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
138 97, 138155, 249 90, 249 95, 264 35, 264 36, 264256, 264263, 2642711, 285 47, 425544, 405158, F16L 104, F16L 5812
Patent
active
047251654
ABSTRACT:
In the progressive forming and laying of an undersea pipeline the welded joints between the ends of pipes pre-coated with a corrosion protection coating and an outer concrete weighting coating are protected by a mastic coating applied by clamping a mould around the pipeline joint to form a cavity between the joint and the mould, filling the cavity with mastic by forcing into it under pressure a charge of mastic at a temperature of not more than 70.degree. C., releasing the pressure and opening and removing the mould. The mastic coating is applied up to the level of the concrete coating adjacent the joint.
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patent: 4222732 (1980-09-01), Pasch et al.
patent: 4323526 (1982-04-01), Hilbush
patent: 4395159 (1983-07-01), Karuks et al.
patent: 4449852 (1984-05-01), Muszynski
patent: 4604256 (1986-08-01), Greenwood et al.
Corbin David H.
S.E.L. Services Limited
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