FUGUAI = DEVIATION<->ABNORMALITY Functional Defects Pollution Difficult to Access/Observe Hard to Load/Operate Unsafe SHEQ “unfriendly” Undesirable Tasks “F” Tags are used to highlight Deviations, Faults or Abnormalities. 3 Types of F-Tags Safety Safety F-Tags are written by everyone for everyone.  Mechanics or operators can close these. Yellow color. Operator