Published 2007 | Version v1
Miscellaneous Metadata-only

Reliability evaluation of the safety service cooling water system of Angra 2 under external events

Creators

  • 1. Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Programa de Engenharia Nuclear
  • 2. Comissao Nacional de Energia Nuclear (CNEN), Rio de Janeiro, RJ (Brazil). Coordenacao de Reatores (CODRE)

Description

This work evaluates the reliability of the Safety Service Cooling Water System (PE) of Angra 2, taking into account the current structure of the system. The fault tree analysis was the method used to identify the main failures of the system emergency cooling pumps, which must start operating under external event conditions (EVA). A system design modification was considered, and a new evaluation of the system reliability was carried out. Such modification is based on the reduction effects of the number of the system components. The aim of this modification is to optimize the system performance, without violating its safety criteria. Then, the fault tree quantification results of the analyzed structures were compared. Finally, from the reliability point of view, it can be concluded that the proposed modification is viable and does not violate the regulatory safety demands. (author)

Part of:
Proceedings of the INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications

Additional details

Publishing Information

ISBN
978-85-99141-02-1
Imprint Title
Proceedings of the INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications
Imprint Pagination
[vp.]
Journal Page Range
[6 p.]

Conference

Title
INAC 2007 International nuclear atlantic conference. Nuclear energy and energetic challenges for 21st. century. 15. Brazilian national meeting on reactor physics and thermal hydraulics; 8. Brazilian national meeting on nuclear applications
Dates
30 Sep - 5 Oct 2007
Place
Santos, SP (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
39084814
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Resource subtype / Literary indicator
Conference, Numerical Data, Non-conventional Literature
Descriptors DEI
ANGRA-2 REACTOR; EXPERIMENTAL DATA; FAULT TREE ANALYSIS; PROBABILISTIC ESTIMATION; PUMPS; REACTOR COOLING SYSTEMS; REACTOR SAFETY; RELIABILITY; WATER
Descriptors DEC
CALCULATION METHODS; COOLING SYSTEMS; DATA; ENERGY SYSTEMS; ENRICHED URANIUM REACTORS; EQUIPMENT; HYDROGEN COMPOUNDS; INFORMATION; NUMERICAL DATA; OXYGEN COMPOUNDS; POWER REACTORS; PWR TYPE REACTORS; REACTOR COMPONENTS; REACTORS; SAFETY; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
9 refs., 2 figs., 1 tab. Code: R04_886.pdf