Under what circumstances does a turbine not shut down due to a vacuum loss fault?

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(1) The vacuum has been reduced to the specified value, but reducing the load to zero still does not work. (2) At the rated steam pressure, the main steam temperature rises to the maximum allowable value. (3) The main and reheat steam temperatures are too low. (4) The main steam pressure rises to the maximum allowable value. (5) The water supply to the generator exceeds the specified value, and the water cutout protection fails to activate. (6) All plant power is lost. (7) When the main oil pump fails and cannot maintain normal operation. (8) There is a severe hydrogen leak in the hydrogen cooling system, and the hydrogen pressure inside the generator cannot be maintained. (9) The condensate pipe ruptured, preventing the deaerator level from being maintained. (10) Leakage in the condenser cooling water pipes, with circulating water leaking into the steam side.