Dissertation failure

If you fail the dissertation you need to make a formal written application, to be sent to the coordinator, specifying that you wish to repeat the dissertation module.
Additionally, if you are approved to repeat you will need to pay the appropriate fees (see this page: http://www.dit.ie/studentservices/feesandgrants/welcometofeesgrants/repeatfees/). You will be also expected to submit a new proposal on a new topic and if approved start a new project. A new supervisor will be assigned to you.
Repeats of dissertations are treated according to the DIT regulations as outlined here