One characteristic of most major process safety incidents is that before they occurred, there were noticeable indications that a problem was developing. It is good practice for teams to discuss examples of weak signals that they have seen in their facility. Weak signals can be a vital opportunity to act early to avoid an accident, so it is important that they are persistently explored to understand the cause.
🔺 We proactively look for indicators or signals that suggest future problems.
🔺 We speak up about potential issues even if we are not sure they are important.
🔺 We persistently explore the causes of changing indicators or unusual situations.
PSF We Watch for Weak Signals Video
Operating Process Equipment
A Liquified Natural Gas (LNG) plant has recently identified instances of corrosion underneath instrument tubing block clamps. Corrosion led to tubing failure.