|Company:||Shell UK – Shearwater platform|
|Situation:||Replacement of export gas flow meter|
|Result:||Reduction of platform downtime and limit blowdown volume|
Shearwater is a Shell UK owned and operated production platform, located in the Central North Sea sector of the UK. (https://www.shell.co.uk/business-customers/upstream-oil-and-gas-infrastructure/north-sea-operated-assets.html)
The DBB-SAVER was used in order to safely replace a flow meter in the export gas system, connecting the platform via the subsea pipeline system to onshore installations. There ws a DBB valve configuration, of which both valves were found to be passing.
Safety risk assessments were performed in adition of the Shell Global approval document (for use of the DBB-SAVER on any of their assets) to identify any other risks in this specific application, on that specific platform.
The outlet of the DBB-SAVER was led outside the topsides to a safe area via full diameter hoses, the rupture disc connection was connected to the platform central flare system. This guaranteed no gas release within the topside modules. Important in a 3-dimensional explosion safe zoned structure, which is one of the challanges offshore.
The DBB-SAVER can be specified for offshore applications. The working principle is the same as an onshore version, but the design is adapted to the specific hook-up and conditions as experienced in an offshore environment.
Link to the customers website: