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http://dx.doi.org/10.5855/ENERGY.2014.23.3.186

Analysis of EQ pH Condition and Fission Product Removal Capability for Nuclear Power Plant  

Song, Dong Soo (Korea Hydro & Nuclear Power Company, Central Research Institute)
Ha, Sang Jun (Korea Hydro & Nuclear Power Company, Central Research Institute)
Seong, Je Joong (Korea Hydro & Nuclear Power Company, Central Research Institute)
Jeon, Hwang Yong (Korea Hydro & Nuclear Power Company, Central Research Institute)
Huh, Seong Cheol (Korea Hydro & Nuclear Power Company, Central Research Institute)
Publication Information
Journal of Energy Engineering / v.23, no.3, 2014 , pp. 186-190 More about this Journal
Abstract
Nuclear Power Plants require the control ability of chemical condition (pH) because pH control during transient accident such as LOCA makes an able the fission product removal capability to be maintained, stress corrosion cracking of stainless steel equipment to be prevented and the production of hydrogen by aluminum and zinc to be minimized. An NPP is designed to control the pH of containment spray and sump coolant using the spray additives 30% NaOH in the event of loss of coolant accident. In this paper, the pH of sump coolant of an NPP during LOCA was analyzed and the fission products removal constant and decontamination factor were calculated according to Standard Review Plan 6.5.2 related to spray chemical conditions of pH. The calculated pH value of recirculation mode using the computer code corresponds to 8.09~9.67, which meets the chemical environment regulation requirements. The fission product removal capability caused by containment spray system is performed to provide input to radiation analysis.
Keywords
Environmental qualification; Chemical condition; Fission product removal capacity; Stress corrosion cracking; Decontamination factor;
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  • Reference
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