Unmanned deepwater-line repair system passes full-scale trials

Journal Article · Mon Sep 06 04:00:00 EDT 1993 · Oil and Gas Journal; (United States)

OSTI ID:6176917

Venzi, S; Vienna, A ^[1]

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1. SNAM SpA, Milan (Italy)

The first ever full-scale tests of an unmanned, deepwater-pipeline repair system were successfully conducted last year off the coast of Italy. The Italian gas-transmission company SNAM tested a submersible automatic system (SAS) sealine repair system at a depth of 600 m. The modular SAS allows sealines to be repaired by installation of the Nuovo Pignone mechanical connector. The system's trials simulated complete repair intervention on the 20-in. Trans mediterranean pipeline and provided unprecedented experience to SNAM and to the other involved in this project. The paper discusses the origin of the idea for the SAS, the design of the system, construction and testing, the first sea trials, final deep sea trials, and future developments.

• OSTI ID: 6176917
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 91:36; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
CONSTRUCTION
CONTROL
DESIGN
DEVELOPED COUNTRIES
ENERGY SYSTEMS
EUROPE
FIELD TESTS
ITALY
MAINTENANCE FACILITIES
MEDITERRANEAN SEA
NATURAL GAS DISTRIBUTION SYSTEMS
PERFORMANCE TESTING
PIPELINES
REMOTE CONTROL
REPAIR
SEAS
SURFACE WATERS
TECHNOLOGY ASSESSMENT
TESTING
UNDERWATER OPERATIONS
WESTERN EUROPE