Emergency Containment Spray Backup System

Css containment spray system dba design basis accident dch direct containment heating ddt deflagration to detonation transition dps diverse protection system ecsbs emergency containment spray backup system edg emergency diesel generator es equipment survivability esw essential service water evse ex vessel steam explosion. Containment spray system. On the other hand 6 npps under constructing such as shin kori units 3 6 and shin hanul units 1 2 are equipped with emergency containment spray backup system ecsbs as the substitution of fcvs to realize the containment depressurization during sas.

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Accident a plant may lose access to this power supply and thus may be required to generate its own power to supply its emergency systems.

Emergency containment spray backup system.

Importance analysis is performed for. 15 th pre application meeting acrs meeting apr 20 21. In the event that rps is unable to scram the reactor for any reason the slcs will inject a liquid boron solution into the reactor vessel to bring it to a guaranteed shutdown state prior to exceeding any containment or reactor vessel limits. An emergency containment spray backup system ecsbs for severe accident management.

Apr1400 has several mitigative features including ecsbs emergency containment spray backup system against severe accidents such as sbo loca loss of coolant accidents and so on. 2016 7 non proprietary apr1400 e n ec 16001 np. Paper is presenting a fault tree analysis of emergency core cooling system and containment spray system of nuclear power plant with wwer 440 v213 reactor. Batteries often form the final redundant backup electrical system and are also capable of providing sufficient electrical power to shut down a plant.

The slcs is a backup to the reactor protection system. Usnrc secy 93.