000007576 001__ 7576 000007576 005__ 20240531164500.0 000007576 02470 $$2doi$$a10.24868/issn.2515-818X.2018.006 000007576 035__ $$a2245580 000007576 037__ $$aGENERAL 000007576 245__ $$aThe influence of the facility nuclear safety case on the design of naval refit support equipment 000007576 269__ $$a2018-10-02 000007576 336__ $$aConference Proceedings 000007576 520__ $$aContinuous review, adaptation and improvement through upkeep and maintenance periods has enabled the Royal Navy submarine fleet to remain fit for purpose through successive life extension programmes. Devonport Royal Dockyard, Plymouth, provides nuclear submarine dry dock facilities for maintenance. The Site Licences which authorise operations of these nuclear facilities are administered by the Office for Nuclear Regulation which ensures that the intent of the facility nuclear safety case is maintained throughout all operations. As such, any dock modifications and refit support equipment or structures must be designed within the framework of the safety case.<br> A requirement to undertake refit activities external to the hull of a nuclear submarine while in dock resulted in a design and build project for a temporary dock-bottom building to provide a safe and capable environment. The design of this building&rsquo;s structure and sub-systems was heavily influenced by the nuclear safety case.<br> This paper explores the challenges of designing equipment within the constraints of the nuclear licensed site, identifies the provenance and the requirements of the nuclear safety case of a dry dock nuclear facility, and examines the influence of this safety case upon requirements management, and the design lifecycle. The design of the dock-bottom building is presented, including an outline of the technical challenges which arose, and some of the novel solutions developed, including; a modular, seismically- qualified, primary structure; and a modified crane incorporating a crushable element. The paper explores the issues of finite element analysis of the primary structure to substantiate performance and satisfy the safety case. The paper also presents a discussion of the influence and impact of the safety case upon the building design project. 000007576 542__ $$fCC-BY-NC-ND-4.0 000007576 6531_ $$aNuclear safety case 000007576 6531_ $$aSubmarine maintenance 000007576 6531_ $$aRequirements management 000007576 6531_ $$aEquipment design 000007576 7001_ $$aCole, H K$$uBabcock International, Plymouth, UK 000007576 773__ $$tConference Proceedings of INEC 000007576 773__ $$jINEC 2018 000007576 789__ $$whttps://zenodo.org/record/2245580$$2URL$$eIsIdenticalTo 000007576 85641 $$uhttps://www.imarest.org/inec$$yConference website 000007576 8564_ $$92922d56e-7720-4ecf-ab26-d58ac1e47522$$s6044847$$uhttps://library.imarest.org/record/7576/files/INEC%202018%20Paper%20006%20Cole%20SDG%20FINAL.pdf