Fission Product Removal Analysis in APR1400 Containment
Conference
·
OSTI ID:21160755
- Korea Power Engineering Company, Inc, 360-9 Ma-Buk Ri, Gu-Sung Yup, Yong-In City, Kyung-Ki Do, 449-713 (Korea, Republic of)
In contrast to the TID-14844, NUREG-1465 source term is characterized by realistic and physical behavior of radioactivity in containment. It specifies a categorized release in terms of phenomenological accidental phase and also defines that the dominant form of the fission product iodine is as finely divided airborne particulate. Following a LOCA, radioactive fission products released to containment are primarily in the form of aerosol. In this paper, the aerosol removal mechanisms applied to the APR1400 are discussed. The principal processes that remove aerosols from the containment atmosphere fall into two classes: containment sprays and natural removal processes. Containment sprays are effective in reducing the airborne concentration of particulate iodines as well as other particulates. And also, the aerosol removal rates using the STARNAUA computer program are presented. The results indicate that the NUREG model is very conservative relative to the STCP, a decrease in droplet diameter increases the aerosol removal coefficient, and SRP method underestimates the aerosol removal coefficient in case of smaller aerosol size. (authors)
- Research Organization:
- American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 21160755
- Country of Publication:
- United States
- Language:
- English
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