Users of pressure equipment that undergoes modifications in the operational stage.

Required by: National legislation.


  • Required information;
  • Alteraion plan;
  • Approval of alteration plan and pre-inspection meeting (PIM);
  • Execution of the change;
  • Commissioning of the modified pressure equipment.


Constructive modification

  • Required information;
  • Plan of constructive modification;
  • Approval of constructive modification;
  • Execution of constructive modification;
  • Commissioning after constructive modification.