Design optimization of backup seal for sodium cooled fast breeder reactor推荐.pdf

Materials and Design 36 (2012) 396–407 Contents lists available at SciVerse ScienceDirect Materials and Design journal homepage: www.else /locate/matdes Technical Report Design optimization of backup seal for sodium cooled fast breeder reactor N.K. Sinha a,⇑, P. Ghosh b, A. Saha b, R. Mukhopadhyay b, Baldev Raj a,1, S.C. Chetal a a Indira Gandhi Centre for Atomic Research (IGCAR), Department of Atomic Energy (DAE), Kalpakkam, Tamilnadu 603 102, India b Hari Shankar Singhania Elastomer Tyre Research Institute (HASETRI), Kankroli, Rajasthan 313 342, India a r t i c l e i n f o a b s t r a c t Article history: Design optimization of static, fluoroelastomer backup seals for the 500 MWe, Prototype Fast Breeder Received 17 October 2011 Reactor (PFBR) is depicted. 14 geometric variations of a solid trapezoidal cross-section were studied by Accepted 18 November 2011 finite element analysis (FEA) to arrive at a design with hollowness and double o-ring contours on the Available online 28 November 2011 sealing face. The seal design with squeeze of 5 mm assures failsafe operation for at least 10 years under a differential pressure of 25 kPa and ageing influences of fluid (air), temperature (110 C) and c radiation (23 mGy/h) in reactor. Hybrid elements of 1 mm length, regular integration, Mooney–Rivlin material model and Poisson’s ratio of 0.493 were used in axisymmetric analysis scheme. Possible effects