Start-up control system and vessel for lmfbr

Details Start-up control system and vessel for lmfbr Start-up control system and vessel for lmfbr

F - Mech Eng,Light,Heat,Weapons

01

K

122/18

F01K 13/02 (2006.01) F01K 3/18 (2006.01) F22B 1/28 (2006.01) F22B 3/04 (2006.01) G21D 5/12 (2006.01)

Patent

CA 1241881

- 20 - ABSTRACT OF THE DISCLOSURE A reflux condensing start-up system comprises a steam generator, a start-up vessel connected parallel to the steam generator, a main steam line connecting steam outlets of the steam generator and start-up vessel to a steam turbine, a condenser connected to an outlet of the turbine and a feedwater return line connected between the condenser and inlets of the steam generator and start- up vessel. The start-up vessel has one or more heaters at the bottom thereof for heating feedwater which is supplied over a start-up line to the start-up vessel. Steam is thus generated to pressurize the steam generator before the steam generator is supplied with a heat transfer medium, for example liquid sodium, in the case of a liquid metal fast breeder reactor. The start-up vessel includes upper and lower bulbs with a smaller diameter mid-section to act as water and steam reservoirs. The start-up vessel can thus be used not only in a start-up operation but as a mixing tank, a water storage tank and a level control at low loads for controlling feedwater flow. - 20 -

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