(a) Submission of abstracts Anyone wishing to present a paper at the conference is requested to submit first an abstract of not more than 300 words. The abstract should give enough information on the contents of the proposed paper to enable the Programme Committee to evaluate it. Authors should state to which of the topics outlined in Section C their contribution relates. Instructions on how to upload the abstract to the conference’s web browser-based file submission system (IAEA INDICO) will be available on the conference web page (see Section M) as of 1 January 2018. The abstract must be submitted through this system by 13 April 2018. No other form of submission will be accepted. The abstracts should also be submitted, together with a completed Participation Form (Form A) and Form for Submission of a Paper (Form B), to the competent official authority (see Section E) for subsequent electronic transmission to the IAEA (Official.Mail@iaea.org), to be received by the IAEA by 13 April 2018. In addition, the abstracts must be sent electronically to: TSOconference2018@iaea.org. Introductory and general matters should not be included. (b) Acceptance of papers for oral or interactive presentation The abstract will be considered only if the Participation Form (Form A) and Form for Submission of a Paper (Form B) have been received by the above-mentioned deadline and through the established official channels. A limited number of abstracts will be selected for submission of a full paper and, consequently, for either oral or interactive presentation. The oral presentation should be delivered during the sessions of the conference. An interactive presentation should provide concise information related to the proposed paper and its delivery method can take the form of, but is not limited to, multimedia presentations, demonstrations, simulations and models and videos, together with any handout material the author may wish to share. Authors will be notified by27 April 2018 as to whether their abstracts have been accepted and, if so, whether the full papers should be delivered as oral or interactive presentations. Authors will be asked to provide their full-length draft paper (a maximum of four pages) by 29 June 2018. Guidelines and a template for the preparation and submission of full papers will be made available on the conference web page. The papers that have been accepted by the Programme Committee will be reproduced in unedited form in the Book of Contributed Papers, which will be distributed to all participants at registration. The Secretariat reserves the right to exclude papers that do not comply with its quality standards or that do not apply to one of the topics outlined in Section C above.