1 2 Condensate pump and feed pump trip

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2 - Condensate pump and feed pump trip! - Turbine trips!

3 - Condensate pump and feed pump trip! - Turbine trips! - Temperature and pressure in the primary loop are increasing!

OPEN - Relief valve in the pressurizer opens ! 4

INSERTED OPEN - Control rods are inserted ! 5

INSERTED OPEN - Pressure in the primary loop is decreasing ! 6

INSERTED OPEN 7 OPERATION - Emergency feed pump is now in operation !

INSERTED 8 OPERATION - Relief valve is closed !

INSERTED 9 OPERATION - Pressure in the primary loop is decreasing !

INSERTED 10 OPERATION - Water level in the secondary side of stream generator is decreasing !

INSERTED 11 OPERATION - Pressure in the primary loop is decreasing !

INSERTED 12 OPERATION - Water level in the pressurizer is gradually increasing ! - Pressure in the primary loop is decreasing !

INSERTED 13 NO WATER OPERATION - There is no water in the secondary side of the steam generator !

INSERTED 14 NO WATER OPERATION - Water level in the pressurizer is gradually increasing ! - Pressure in the primary loop is decreasing !

INSERTED 15 NO WATER OPERATION - Why is pressure in the primary loop decreasing even though water level is increasing?

INSERTED 16 NO WATER OPERATION - Water level in the pressurizer is gradually increasing ! - Pressure in the primary loop is decreasing !

INSERTED 17 NO WATER IS INJECTED OPERATION - Emergency core cooling system is now in operation because of the low pressure in the primary loop !

INSERTED 18 NO WATER IS INJECTED OPERATION - Water level in the pressurizer is increasing ! - Pressure in the primary loop is decreasing !

INSERTED 19 NO WATER IS INJECTED OPERATION - It might be dangerous if the amount of water is too much in the primary loop…

INSERTED 20 NO WATER IS INJECTED OPERATION - Water level in the pressurizer is increasing ! - Pressure in the primary loop is decreasing !

INSERTED 21 NO WATER IS INJECTED OPERATION - Emergency core cooling system is operated by the manual mode from now !

INSERTED 22 NO WATER IS INJECTED OPERATION - Water level in the pressurizer is increasing ! - Pressure in the primary loop is decreasing !

INSERTED 23 NO WATER IS INJECTED OPERATION - One of two emergency core cooling systems is manually stopped and the injected water from the other one is reduced.

INSERTED 24 NO WATER IS INJECTED OPERATION - Water level in the pressurizer is increasing ! - Pressure in the primary loop is decreasing !

INSERTED 25 FULL WATER NO WATER IS INJECTED OPERATION - Water level is reaching the top of the pressurizer !

INSERTED 26 FULL WATER NO WATER IS INJECTED OPERATION - Water in the pressurizer is full, but measurement data at other positions in the primary loop do NOT show the solid state…

INSERTED 27 FULL WATER NO WATER IS INJECTED OPERATION - Water level is at the top of the pressurizer ! - Pressure of the primary loop is decreasing !

INSERTED 28 FULL WATER NO WATER IS INJECTED OPERATION - Water level is at the top of the pressurizer ! - Pressure of the primary loop is decreasing ! - Water in the containment sump is moved to the auxiliary building.

INSERTED 29 FULL WATER IS INJECTED OPERATION - The block values on the emergency feed water line pump have been CLOSED ! Why ! - Now it is OPEN !