Outlines of RAMI guidelines for DEMO systems

Tonio Pinna, Risto Tuominen

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Demonstration Power Plant (DEMO) will be a prototype fusion reactor designed to prove capability to produce electrical power in a commercially acceptable way. Key element in the engineering development of such reactor is the definition of reliability and availability (RA) requirements to drive the development and design processes. Since these requirements are strictly related to maintenance and inspection activities, the integrated approach in RA optimization needs to be based on all four issues: Reliability, Availability, Maintainability and Inspectability (RAMI). This paper defines a roadmap for the application of the RAMI approach and the first outline of RAMI guidelines for DEMO major systems. RAMI approach for a novel future research plant like DEMO is influenced by many factors: design of systems; manufacturing quality; operational environment; training and skills of operators; spare parts policy; instrumentation and controls available to check system processes and detect abnormal operating parameters, etc. During the pre-conceptual and conceptual design phases, the most important activity is to understand the rationale of the plant, the associated functions, and the originating requirements and constraints for the different systems. As DEMO will be a nuclear facility, the RAMI approach for management of the technical risks must be in the first instance driven by the safety aspects. Inadequate reliability or failed failure indications of components deemed safety critical items may directly jeopardize the public and worker safety. Accordingly, probabilistic safety assessments have to be strongly integrated with the RAMI assessments. The resulting reliability assurance programme for DEMO will be based on the following four functional elements: - Goals and performance criteria, - Management systems and implementing procedures, - Analytical tools and investigative methods, and - Information management. In setting up such functional elements, experience gained in existing fusion devices and in other significant fields of applications is considered.
Original languageEnglish
Publication statusPublished - 2012
Externally publishedYes
Event11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012, PSAM11 ESREL 2012 - , Finland
Duration: 1 Jan 2012 → …

Conference

Conference11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012, PSAM11 ESREL 2012
CountryFinland
Period1/1/12 → …

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All Science Journal Classification (ASJC) codes

  • Safety, Risk, Reliability and Quality

Cite this

Pinna, T., & Tuominen, R. (2012). Outlines of RAMI guidelines for DEMO systems. Paper presented at 11th International Probabilistic Safety Assessment and Management Conference and the Annual European Safety and Reliability Conference 2012, PSAM11 ESREL 2012, Finland.