METHOD AND APPARATUS FOR FORMING A PROTECTIVE COAT ABOUT A CUTBACK BETWEEN PIPES FORMING PART OF AN UNDERWATER PIPELINE, AND UNDERWATER-PIPELINE-LAYING VESSEL COMPRISING SUCH AN APPARATUS

摘要

A method of forming a protective coat (21) about a cutback (18) between pipes (3) forming part of an underwater pipeline (2) provides for laying a thermoplastic sheet (22; 42) on a supporting sheet (23; 27; 40); and winding the thermoplastic sheet (22; 42) and the supporting sheet (23; 27; 40) about the cutback (18) to join the thermoplastic sheet (22; 42) to the cutback (18). A method of forming a protective coat (21) about a cutback (18) between pipes (3) forming part of an underwater pipeline (2) provides for laying a thermoplastic sheet (22; 42) on a supporting sheet (23; 27; 40); and winding the thermoplastic sheet (22; 42) and the supporting sheet (23; 27; 40) about the cutback (18) to join the thermoplastic sheet (22; 42) to the cutback (18).