Overview Used in CALM Buoy pipeline systems, the Autonomous Shutdown Valve (ASV) package comprises of a hydraulic actuator and subsea control system to operate the subsea pipeline ball valve on demand by detecting pipeline pressure changes and initiating valve stroking. The ASV provides fully automatic fail-safe operation of a PLEM valve to isolate the pipeline from the flexible riser, irrespective of weather conditions.
Applications Pipeline loading systems, CALM Buoy pipeline systems and similar systems.
Water depths up to 200m
Key Features & Benefits
Fully automatic fail-safe operation of a PLEM valve
Reliable and requires no operator intervention
Significant operational cost savings
Automatic line-break detection and shutdown
Reduced risk of pollution and loss of sealine inventory
Remote status monitoring, override control and in-situ diagnostics
Specifically designed for high reliability in the harshest operating conditions
Proven subsea technology across all system components
LiMnO2 batteries provide an expected operational life of 5 to 7 years
Also suitable for land based applications in which power supplies are limited or unavailable