Audible leak detected from Flow Wing Valve actuator body vent.

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Alert ID: 
Description of Task: 

Leak detected from a Flow Wing Valve actuator body vent. On investigation with gas detector at 1/2 metre distance, reading found to be 80%LEL.

Lessons Identified: 

Investigation confirmed that the seal failure was down to fair wear and tear. These actuators are tested annually by Well Services and during the last test no leak was identified. The tell tale operated as per design and prevented overpressure of the actuator canister.


The Well was immediately isolated.

Actuator was replaced.

Information source: 
Contact Details: 
Step Change in Safety
Specific Equipment: 

Flow wing actuator

Incident consequence: 
Hydrocarbon release
Production operations
Fixed Installation
Cause of accident or incident: 
Uncontrolled release of a flammable gas or liquid