scholarly journals Risk allocation approach to reactor safety design and evaluation

1978 ◽  
Author(s):  
O Gokcek ◽  
M I Temme ◽  
S L Derby
Keyword(s):  
Risk Allocation ◽  
Reactor Safety ◽  
Safety Design ◽  
Allocation Approach

Fundamentals of Boiling Water Reactor Safety Design and Operation

2007 ◽  
pp. 123-146
Author(s):  
Javier Ortiz-Villafuerte ◽  
Rogelio Castillo-Durán ◽  
Héctor Hernández-López ◽  
Enrique Araiza-Martínez
Keyword(s):  
Boiling Water ◽  
Boiling Water Reactor ◽  
Reactor Safety ◽  
Water Reactor ◽  
Safety Design

Safety Design Features for Defense-in-Depth Against Beyond Design Basis Accidents for Cernavoda NPP: Units 3 and 4

2014 ◽  
Author(s):  
Ngoc-Boi Dinh ◽  
Steven Ford ◽  
Boris Lekakh
Keyword(s):  
High Performance ◽  
Operational Performance ◽  
Reactor Safety ◽  
Reference Levels ◽  
Regulatory Requirements ◽  
Design Features ◽  
Design Basis ◽  
Safety Design ◽  
Defense In Depth ◽  
High Performance Design

The Cernavoda Units 3&4 (C3&4) CANDU 6 design is the upgraded Cernavoda 2 CANDU 6 design that meets the applicable Romanian regulatory requirements (NSN-2, NSN-8) and the WENRA Reactor Safety Reference Levels requirements. C3&4 build on the proven high performance design and the defence-in-depth features of CANDU 6 units and incorporate further improvements to safety and operational performance.

Modeling Passive Safety in the Westinghouse Small Modular Reactor: Assessment of Wall Condensation and CMT Natural Circulation

2013 ◽  
Author(s):  
Jun Liao ◽  
Vefa N. Kucukboyaci
Keyword(s):  
Natural Circulation ◽  
Passive Safety ◽  
Reactor Safety ◽  
Heat Transfer Mechanism ◽  
The Core ◽  
Design Basis ◽  
Loss Of Coolant Accident ◽  
Small Modular Reactor ◽  
Loss Of Coolant ◽  
Safety Design

Passive safety design that utilizes gravity, natural circulation, heat sink and stored potential energy for reactor safety functions is being increasingly adopted in advanced reactors, especially in the small modular reactor (SMR) designs. The passive safety design of the Westinghouse SMR is described in details and compared with the AP1000® passive safety design. The natural circulation loops and heat transfer mechanism in a postulated Westinghouse SMR loss of coolant accident (LOCA) are discussed. The key thermal hydraulic phenomena pertinent to the passive safety design of the Westinghouse SMR have been identified in the small break LOCA Phenomena Identification and Rank Table (PIRT). Among the identified phenomena, condensation on the containment wall and natural circulation in core makeup tank (CMT) loop are highly ranked. Those passive safety phenomena are expected to be assessed using the WCOBRA/TRAC-TF2 LOCA thermal hydraulic code, which will provide the design basis LOCA analysis in the SMR design control documentation. In this paper, the progress on the assessing two key phenomena in passive safety of Westinghouse SMR is reported. The preliminary assessments against UCB tube condensation tests and Westinghouse core makeup tank tests reveals the capability of WCOBRA/TRAC-TF2 code to reasonably predict the condensation on the containment wall and natural circulation in the core makeup tank (CMT) loop.

scholarly journals A risk allocation approach to optimal exchange rate policy

2005 ◽  
Vol 57 (3) ◽  
pp. 398-421
Author(s):  
B. Gabriela Mundaca ◽  
Jon Strand
Keyword(s):  
Exchange Rate ◽  
Exchange Rate Policy ◽  
Risk Allocation ◽  
Rate Policy ◽  
Allocation Approach

Re-evaluating the risk costing agenda in PPP projects

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Khalid Almarri ◽  
Halim Boussabaine
Keyword(s):  
Risk Allocation ◽  
Content Type ◽  
The Public ◽  
Risk Transfer ◽  
Potential Gain ◽  
Price Of Risk ◽  
Risk Pricing ◽  
The Cost ◽  
Risk Determinants ◽  
Allocation Approach

PurposeThe level at which risk is priced and the magnitude of risks transferred to the private sector will have a significant impact on the cost of the public–private partnership (PPP) deals as well as on the value for money analysis and on the section of the optimum investment options. The price of risk associated with PPP schemes is complex, dynamic and continuous throughout the concession agreement. Risk allocation needs to be re-evaluated to ensure the optimum outcome of the PPP contract.Design/methodology/approachThis paper provides a coherent theoretical framework for dealing with scenarios of potential gain and loss from retaining or transferring risks.FindingsThe outcome indicates that using the proposed framework will provide innovative ways of deriving risk prices in PPP projects using several risk determinants strategies.Practical implicationsIn costing risks, analysts have to take into consideration the balance between the cost of risk transfer and the cost of losses if risk is retained.Originality/valueThis paper contributes to the PPP literature and practice by proposing a framework which is consistent with a risk allocation approach in PPP projects, where the key proposition is that risk pricing can overload project debt leading to loss of value.

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