1. Oil sampling must be carrie out by qualified professionals according to procedures
  2. laboratory analyses must be carried out using methods set by reference standards, as they guarantee accredited laboratories
  3. countermeasures to the C1 problem, in this case depolarisation treatments, must be carried out
    – using secure technology that is fit for purpose,
    – by skilled staff who have specific training in the field,
    – by operators who can demonstrate they have worked on a wide variety of cases.