Nuclear pipes are designed to withstand primary membrane stresses generated by internal pressure according to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code, Section III, Parts NB-3641, NC-3641, and ND-3641, which uses the allowable stress design (ASD) method. This paper presents limit states and equations for the design of nuclear pipes for internal pressure based on the load and resistance factor design (LRFD) method. The LRFD method is shown and explained to be more consistent than the ASD method. The paper presents the procedure for the derivation of the partial safety factors. Moreover, these factors are evaluated, example calculations are provided, and comparisons with the present design are made.
A Reliability-Based Approach for the Design of Nuclear Piping for Internal Pressure
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Avrithi, K., and Ayyub, B. M. (May 15, 2009). "A Reliability-Based Approach for the Design of Nuclear Piping for Internal Pressure." ASME. J. Pressure Vessel Technol. August 2009; 131(4): 041201. https://doi.org/10.1115/1.3122017
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