ICONE19-43821 NUCLEAR POWERED SHIPS : Findings from A FEASIBILITY STUDY

Namikawa, Shunichiro; Maerli, Morten Bremer; Hoffmann, Peter; Brodin, Erik

doi:10.1299/jsmeicone.2011.19._icone1943_316

Cited by 9 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nuclear power plants have no GHG emissions during operation and are especially well suited for ships with slowly varying power demands [31]. Although several hundred nuclear-powered navy vessels exist, few nuclear-powered merchant ships have been built.…”

Section: Alternative Fuelsmentioning

confidence: 99%

CO₂abatement potential towards 2050 for shipping, including alternative fuels

Eide¹,

Chryssakis

Endresen

2013

Carbon Management

View full text Add to dashboard Cite

Background: Recent studies have demonstrated a cost-effective potential to reduce the CO 2 emissions in the existing world shipping fleet by 15%, and by 30% for the 2030 fleet. Methods & results: CO 2 abatement pathways for shipping towards 2050 have been modeled, using a new probabilistic model. In addition to measures analyzed in the past, the uptake of alternative fuels is modeled. The results show that with uptake of operational and technical measures, as well as biofuels and liquefied natural gas, the cost-effective CO 2 reduction potential in 2050 is in the order of 50%. Conclusion: For shipping to substantially contribute to a 2°C pathway, a financial incentive for biofuel is one alterative, but nuclear power in large ships could also cut emissions drastically.

show abstract

Section: Alternative Fuelsmentioning

confidence: 99%

CO₂abatement potential towards 2050 for shipping, including alternative fuels

Eide¹,

Chryssakis

Endresen

2013

Carbon Management

View full text Add to dashboard Cite

show abstract

“…According to the US Nuclear Energy Institute, nuclear fuel only accounts for ∼14% of the total costs of nuclear energy (Otto, 2013); as a result, changes in the price of primary resources have little effect on operating costs. In contrast, fossil fuel prices have historically experienced dramatic fluctuations: for instance, the price of heavy fuel oil nearly tripled between January 2007 and July 2008 (Otto, 2013, Namikawa et al, 2011. It is, therefore, a detailed design of advanced nuclear technology that is cost-effective will result in a superior nuclear propulsion system than the current utilized conventional propulsion systems (Otto, 2013, Namikawa et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, fossil fuel prices have historically experienced dramatic fluctuations: for instance, the price of heavy fuel oil nearly tripled between January 2007 and July 2008 (Otto, 2013, Namikawa et al, 2011. It is, therefore, a detailed design of advanced nuclear technology that is cost-effective will result in a superior nuclear propulsion system than the current utilized conventional propulsion systems (Otto, 2013, Namikawa et al, 2011. The key economic advantage of a nuclear-powered container ship is that it can practically double its yearly revenue compared to a conventional fossil-fueled vessel (Hass, 2014, Otto, 2013, Namikawa et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

“…It is, therefore, a detailed design of advanced nuclear technology that is cost-effective will result in a superior nuclear propulsion system than the current utilized conventional propulsion systems (Otto, 2013, Namikawa et al, 2011. The key economic advantage of a nuclear-powered container ship is that it can practically double its yearly revenue compared to a conventional fossil-fueled vessel (Hass, 2014, Otto, 2013, Namikawa et al, 2011. Nonetheless, nuclear power has not been widely applied to shipping for several key reasons: (1) Almost all the experience with marine reactors has been with highly enriched uranium.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Neutronic feasibility of civil marine small modular reactor core using mixed D2O+H2O coolant

Alam

Almutairi

Kumar

et al. 2020

Nuclear Engineering and Design

View full text Add to dashboard Cite

In an effort to decarbonize the marine sector, there are growing interests in replacing the contemporary, traditional propulsion systems with nuclear propulsion systems. The latter system allows freight ships to have longer intervals before refueling; subsequently, lower fuel costs, and minimal carbon emissions. Nonetheless, nuclear propulsion systems have remained largely confined to military vessels. It is highly desirable that a civil marine core not to use highly enriched uranium, but it is then a challenge to achieve long core lifetime while maintaining reactivity control and acceptable power distributions in the core. The objective of this study is to design a civil marine core type of single batch small modular reactor (SMR) with low enriched uranium (LEU) (<20% 235 U enrichment), a soluble-boron-free (SBF) and using mixed D 2 O+H 2 O coolant for operation period over a 20 years life at 333 MWth. Changing the coolant properties is the way to alter the neutron energy spectrum in order to achieve a self-sustaining core design of higher burnup. Two types of LEU fuels were used in this study: micro-heterogeneous ThO 2 -UO 2 duplex fuel (18% 235 U enriched) and all-UO 2 fuel (15% 235 U enriched). 2D Assembly designs are developed using WIMS and 3D whole-core model is developed using PANTHER code. The duplex option shows greater promise in the final burnable poison design with high thickness ZrB 2 integral fuel burnable absorber (IFBA) while maintaining low, stable reactivity with minimal burnup penalty. For the final poison design with ZrB 2 , the duplex contributes ∼2.5% more initial

show abstract

“…3. Potential operators are deterred by the legal and regulatory uncertainty surrounding nuclear propulsion, which is further complicated by the issue's international scope (Namikawa et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Coupled neutronic/thermal-hydraulic hot channel analysis of high power density civil marine SMR cores

Alam

Oliveira

Goodwin³

et al. 2019

Annals of Nuclear Energy

View full text Add to dashboard Cite

Core average power density of standard small modular reactors (SMR) are generally limited to 60-65 MW/m 3 , which is 40% lower than for a standard civil PWR in order to accommodate better thermal margins. While designing a SMR core for civil marine propulsion systems, it is required to increase its power density to make more attractive for future deployment. However, there are obvious thermal-hydraulic (TH) concerns regarding a high power density (HPD) core, which needs to be satisfied in order to ensure safe operation through accurate prediction of the TH parameters. This paper presents a coupled neutronic/thermal-hydraulic (TH) hot channel analysis of a HPD 375 MWth soluble-boron-free PWR core using 19.25% 235 U enriched microheterogeneous ThO 2-UO 2 duplex fuel and 16% 235 U enriched homogeneously mixed all-UO 2 fuel with a 15 effective full-power-years (EFPY) core life. To perform this analysis the hybrid Monte Carlo reactor physics code MONK is coupled with sub-channel analysis TH code COBRA-EN. This approach is used to investigate the feasibility of different HPD marine PWR concepts and to identify the main TH challenges characterising these designs. To design HPD cores of between 82 and 111 MW/m 3 , three cases were chosen by optimizing the fuel pin diameter, pin pitch and pitch-to-diameter ratio. These cases have been studied to determine whether TH safety limits are satisfied by evaluating key parameters, such as minimum departure from nucleate boiling ratio, surface heat flux, critical heat flux, cladding inner surface and fuel centreline temperatures, and pressure drop. The results show that it is possible to achieve a core power density of 100 MW/m 3 for both the candidate fuels, a ∼50% improvement on the reference design (63 MW/m 3), while meeting the target core lifetime of 15 EFPY and remaining within TH limits. The size of the pressure vessel can therefore be reduced substantially and the economic competitiveness of the proposed civil marine PWR reactor core significantly improved.

show abstract

ICONE19-43821 NUCLEAR POWERED SHIPS : Findings from A FEASIBILITY STUDY

Cited by 9 publications

References 0 publications

CO₂abatement potential towards 2050 for shipping, including alternative fuels

CO₂abatement potential towards 2050 for shipping, including alternative fuels

Neutronic feasibility of civil marine small modular reactor core using mixed D2O+H2O coolant

Coupled neutronic/thermal-hydraulic hot channel analysis of high power density civil marine SMR cores

Contact Info

Product

Resources

About

ICONE19-43821 NUCLEAR POWERED SHIPS : Findings from A FEASIBILITY STUDY

Cited by 9 publications

References 0 publications

CO2abatement potential towards 2050 for shipping, including alternative fuels

CO2abatement potential towards 2050 for shipping, including alternative fuels

Neutronic feasibility of civil marine small modular reactor core using mixed D2O+H2O coolant

Coupled neutronic/thermal-hydraulic hot channel analysis of high power density civil marine SMR cores

Contact Info

Product

Resources

About

CO₂abatement potential towards 2050 for shipping, including alternative fuels

CO₂abatement potential towards 2050 for shipping, including alternative fuels