New long-cycle small modular PWR cores using particle type burnable poisons for low boron operation
- Authors
- Yoo, Hoseong; Hwang, Dae Hee; HONG, SER GI; Shin, Ho Choel
- Issue Date
- Apr-2017
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Small Modular Reactor; Low boron operation; Long Cycle Operation; Burnable poison rods
- Citation
- NUCLEAR ENGINEERING AND DESIGN, v.314, pp.173 - 181
- Indexed
- SCIE
SCOPUS
- Journal Title
- NUCLEAR ENGINEERING AND DESIGN
- Volume
- 314
- Start Page
- 173
- End Page
- 181
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20407
- DOI
- 10.1016/j.nucengdes.2017.01.020
- ISSN
- 0029-5493
- Abstract
- In this paper, new small long-cycle PWR (Pressurized Water Reactor) cores for low boron concentration operation are designed by employing advanced burnable poison rods (BPRs) in which the BISO (Bi-Isotropic) particles of burnable poison are distributed in a SiC matrix. The BPRs are designed by adjusting the kernel diameter, the kernel material and the packing fraction to effectively reduce the excess reactivity in order to reduce the boron concentration in the coolant and achieve a flat change in excess reactivity over a long operational cycle. In addition, axial zoning of the BPRs was suggested to improve the core performances, and it was shown that the suggested axial zoning of BPRs considerably extends the cycle length compared to a core with no BPR axial zoning. The results of the core physics analyses showed that the cores using BPRs with a B4C kernel have long cycle lengths of ∼4.5 EFPYs (Effective Full Power Years), small maximum CBCs (Critical Boron Concentration) lower than 370 ppm, low power peaking factors, and large shutdown margins of control element assemblies.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 원자력공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20407)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.