Size distribution of drops from containment spray nozzles. [PWR]

Autor:	T. B. Powers, D. L. Reid
Rok vydání:	1979
Předmět:	Spray characteristics Drop size Mathematical model law Nuclear engineering Drop (liquid) Particle-size distribution Nozzle Environmental engineering Environmental science Nuclear reactor law.invention
DOI:	10.2172/6323345
Popis:	Typically PWR nuclear reactor containment vessels are equipped with an array of spray nozzles that would be used to decontaminate the vessel atmosphere in the unlikely event of a loss-of-coolant accident (LOCA). Since the decontamination rate is highly dependent upon the spray drop size, knowledge of the size distribution of the drops from a specified nozzle is required for mathematical prediction of washout rates for the radionuclides present in the vessle atmosphere. Spray washout rates for 1713A and 7G3 nozzles were empirically determined in the Containment System Experiments (CSE). The values obtained compared reasonably well with those calculated using the mathematical model. The mass median diameter (MMD) drop sizes of the sprays used for the mathematical prediction were those supplied by the manufacturers which were based on an early photographic method.
Databáze:	OpenAIRE
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