Conceptual design of an innovative reduced moderation thorium‐fueled small modular reactor with heavy‐water coolant

2019 ◽  
Author(s):  
Tengfei Zhang ◽  
Jinbiao Xiong ◽  
Xiaojing Liu ◽  
Xiang Chai ◽  
Wei Li ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Heavy Water ◽  
Water Coolant ◽  
Small Modular Reactor

CANDU-Like Features in Emerging Small Modular Reactor Designs

2021 ◽  
Author(s):  
Esam Hussein
Keyword(s):  
Heavy Water ◽  
Operating Experience ◽  
Heat Sinks ◽  
Candu Reactors ◽  
Small Modular Reactor ◽  
Large Heat ◽  
Reactor Shutdown ◽  
To Receive

Abstract Several small modular reactor (SMR) designs are emerging, but only the CANDU Small Modular Reactor and a couple of Indian designs incorporate the familiar features of the larger CANDU-reactors. This paper shows that while the CANDU concept did not seem to receive wider attention among SMR designers, it has influenced a few. The paper discusses how the CANDU operating experience can aid in the construction and operation of some SMRs. For example, the concept of passive reactor shutdown by draining the moderator, which was utilized in the early Pickering A units, is adopted in the Copenhagen Atomics Waste Burner; a molten slat (LiF-ThF$ _4 $) heavy-water moderated reactor. The heavy-water and lithium in this salt produce tritium and can benefit from the CANDU experience in handling tritium. The online refueling of CANDU reactors, their large heat sinks and seamless configuration are also reflected in SMR designs.

A conceptual design for a generic heavy water research reactor to a more proliferation-resistant reactor

2018 ◽  
Vol 112 ◽  
pp. 418-430
Author(s):  
Fatemeh Mansourzadeh ◽  
Farrokh Khoshahval ◽  
Jaber Safdari
Keyword(s):  
Conceptual Design ◽  
Heavy Water ◽  
Research Reactor ◽  
Water Research

ACR-1000 Passive Features

2006 ◽  
Author(s):  
B. Lekakh ◽  
K. Hau ◽  
S. Ford
Keyword(s):  
Heavy Water ◽  
Reactor Design ◽  
Water Coolant ◽  
Design Elements ◽  
Light Water ◽  
Type Reactor ◽  
Safety Margins ◽  
Passive Design ◽  
Tube Type ◽  
Water Moderator

The Advanced CANDU Reactor™ (ACR™) is a Generation III+ pressure tube type reactor using light water coolant and heavy water moderator. The ACR-1000 reactor design is an evolutionary extension of the proven CANDU reactor design. The ACR-1000 incorporates multiple and diverse passive systems for accident mitigation. Where necessary, one or more features that are passive in nature have been included for mitigation of any postulated accident event. This paper describes how the use of passive design elements complements active features enhances reliability and improves safety margins.

High temperature ultra-small modular reactor: Pre-conceptual design

2020 ◽  
Vol 141 ◽  
pp. 107311 ◽  
Author(s):  
Naiki Kaffezakis ◽  
Stefano Terlizzi ◽  
Corey Smith ◽  
Anna S. Erickson ◽  
Shannon K. Yee ◽  
...  
Keyword(s):  
High Temperature ◽  
Conceptual Design ◽  
Small Modular Reactor

scholarly journals Conceptual design of a small-pressurized water reactor using the AP1000 fuel assembly design

2019 ◽  
Vol 9 (2) ◽  
pp. 25-30
Author(s):  
Van Khanh Hoang ◽  
Viet Phu Tran ◽  
Van Thin Dinh ◽  
Hoai Nam Tran
Keyword(s):  
Conceptual Design ◽  
Safety Margin ◽  
Nucleate Boiling ◽  
Pressurized Water Reactor ◽  
Pressurized Water ◽  
Assembly Design ◽  
Small Modular Reactor ◽  
Active Core ◽  
Reactivity Coefficients ◽  
Ap1000 Reactor

This paper presents the conceptual design of a 300 MWt small modular reactor (SMR)using fuel assemblies of the AP1000 reactor. Numerical calculations have been performed to evaluate a proper active core size and core loading pattern using the SRAC code system and the JENDL-4.0 data library. The analysis showed that Doppler, moderator temperature, void, and power reactivity coefficients are all negative over the core lifetime. Semi-analytical thermal hydraulics analysis reveals acceptable radial and axial fuel element temperature profiles with significant safety margin of fuel andclad surface temperature. The minimum departure from nucleate boiling ratio (MDNBR) is also calculated. The results indicate that a cycle length of 2.22 years is achievable while satisfying the operation and safety-related design criteria with sufficient margins.

Conceptual Design of Multi-Purpose Heavy Water Detritiation Plant

2017 ◽  
Vol 71 (4) ◽  
pp. 605-609 ◽  
Author(s):  
S. D. Bondarenko ◽  
I. A. Alekseev ◽  
O. A. Fedorchenko ◽  
K. A. Konoplev ◽  
Т. V. Vasyanina
Keyword(s):  
Conceptual Design ◽  
Heavy Water
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