Description of Incident
A Liquified Natural Gas (LNG) plant has recently identified instances of corrosion underneath instrument tubing block clamps. This corrosion has led to tubing failure and leaks.
- · a hydraulic oil leak on a loading arm hydraulic system
- · instruments leak on an ethylene compressor discharge line from a ½ inch stainless steel instrument tube. The pressure in the line at the time was 6.5 barg. The line can operate up to 9 barg.
A survey of similar installations across the facility found further evidence of corrosion particularly in marine environments.
To view the full alert including lessons learned and good practice, please download the attached alert from Safer Together by clicking on the above "download" button.