Category Archives: Nuclear Reactors 1

Sodium cooled fast reactors

In the second half of 2010, there were only two operating sodium cooled fast reactors worldwide, the BN-600 in the Russian Federation and the restarted MONJU in Japan. In the past, there were more sodium cooled fast reactors (the last of the two units in France was shut down early in 2010), and several such reactors are expected to start […]

Read more

United States (Alaska)

For the third evaluation case, reference [7.7] indicates the generation costs across Alaska (US) vary between 9.3 and 450 USD/MWh (110-540 USD/MWh in 2009 USD), which exceeds the typical costs in the US contiguous forty eight states by factors of three to ten [7.8]. The climatic and siting conditions in Alaska are similar to those in the northern parts of […]

Read more

. Economy of multi-module plants

While twin-units of nuclear power plants exist and the cost reduction factors for them are known and defined by equations (6.9) and (6.10), no experience data is currently available for multi-module nuclear plants. The apparent reason is that multi-module nuclear power plants have never been built. However, with reference to the current safety rules that prohibit safety system sharing among […]

Read more

Reduced staffing requirements

Simplified operation and maintenance requirements are targeted by the designers of many advanced SMRs [9.2 and 9.4]. Reduced requirements to operation and maintenance are generically translated into reduced staffing requirements, and such requirements may challenge the corresponding national regulatory norms, specifically, if the latter are defined on a capacity-independent basis. For example, in some national regulations the requirements to have […]

Read more

Safety features and licensing of SMRs

Safety features of SMRs The safety aspects of SMRs have been intensively discussed in several recent publications, mostly originating from the International Atomic Energy Agency (IAEA), which are summarised below. However, one should keep in mind that the safety features of SMRs will be re-analysed following the Fukushima Dai-ichi accident in order to take into account the lessons learnt from […]

Read more

Evaluation of SMR deployment potential

7.2.1 SMR designs selected for the evaluation of deployment potential in niche markets Deployment potential was evaluated for typical SMRs of the PWR type presented in Table 7.1. The independently estimated ranges of LUEC values given in Table 7.3 were used for the evaluation. Table 7.7 summarises the plant configurations with SMRs for which the evaluations were performed. For convenience, […]

Read more

Lead-bismuth cooled fast reactors

There is no operational experience with commercial lead-bismuth-cooled fast reactors in any country of the world. The Russian Federation is the only country that had used the technology of lead — bismuth eutectics coolant and produced and operated small marine propulsion reactors[28] with such coolant, gaining a cumulated 80 reactor-years experience of their operation in nuclear submarines. However, the lead-bismuth-cooled […]

Read more
1 2 3 8