PURPOSE: To announce the conditions of a subject plant, facilities, etc., with high accuracy by deleting the undesired messages having low degrees of importance to announce only the desired messages with priority to prevent the mishearing of an operator, the delay of announcement, etc.
CONSTITUTION: A massage 'The reactor water level is reduced down to L3.' is included in those messages stored in a message fetching part 4 and announces the water level of a reactor that is especially important among those factor of the reactor. Then this message is announced in the 6th place with no intervention of a message selection deciding part 5. While said message is announced in the 3rd from first through the part 5 and under the conditions of a plant state showing a reactor scrum since such a system is applied where the messages having low degrees of importance are deleted.
YAMATANI KOSEI
MAEHARA TAKASHI
HITACHI CONTROL SYST