Incident Description:
- An ESD (Emergency Shutdown) valve’s hydraulic pump toggle orientation may have contributed to the amount of product released during the following incident. The incident itself was caused from other factors, however.
- The company discovered a hydrocarbon condensate leak.
- Data shows that the pipeline pressure dropped below the high/low pressure pilot settings, and two ESD valves upstream of the leak should have closed but did not. This would not have prevented the leak but could have allowed a quicker response from operations and resulted in less product on the ground. Subsequent investigation proved that if latch toggles are not left in the correct position, there is a chance their action could be delayed or prevented.