Systems and methods for setting correspondence between pieces of equipment, locations and elements of a lockout procedure checklist comprising a procedure checklist and marking tools. The procedure checklist is printed over a markable support and comprises elements printed thereon each comprising a unique graphical assemblage. Marking tools, provided at locations to perform securing operations on pieces of equipment, are adapted to generate markings on the support matching the graphical assemblages. The operator following each of the elements of the procedure uses the marking tools at the locations to generate markings on the support, and thereby completion of the procedure may be validated by comparing the markings generated on the support with the graphical assemblages thereon. Procedure allows to validate that operations are performed only on appropriate pieces of equipment and location, and that all steps are performed.