The advantages that can be obtained by using the “Safework” application can be summed up as follows: improvement in the control of the input of data and specifications by various persons involved in drawing up the work permits, through checks made automatically by the system; availability of electronic authoriza tion procedure, ensuring respect of the procedural constraints and control of the persons involved in signing the permits; improvement in the traceabil ity, storage and filing of the forms, through an electronic archive of all past and present work permits; “shift of knowledge”, from the im plied, subjective knowledge pos sessed by the one person responsible for filling in the work permits to ex press, objective knowledge pos sessed by the system, through broader distribution ensured by the historical archive.