Permit-to-work (PTW) refers to a management system procedure used to ensure that work is done safely and efficiently. It is used in hazardous industries, such as process and nuclear plants, usually in connection with maintenance work.[1] It involves procedured request, review, authorization, documenting and, most importantly, de-conflicting of tasks to be carried out by front line workers. It ensures affected personnel are aware of the nature of the work and the hazards associated with it, all safety precautions have been put in place before starting the task, and the work has been completed correctly.[1]