Formulation of criteria and reasoning procedure for the safe operation of pipelines and FBR housings under conditions of sodium leakage via through crack and its combustion

The paper describes the developed procedure and calculation criteria for the safe operation of pipelines and equipment of the primary and secondary loops of FBR under conditions of sodium leakage via through crack and its combustion. The procedure uses the methods of calculation of through crack stability and limit states of the design section modified for operating conditions for sodium installations. To determine the rate and volume of leaked sodium, engineering approaches based on the Bernoulli equation, on the calculation of the hydraulic diameter in the smallest (critical) cross section, and on estimation of the hydraulic resistance in the through crack channel are proposed.