Plant security managing device, managing method and managing program

摘要

A technology is provided which ensures a high security without affecting a plant operation. A plant security managing device includes a determining unit that determines which one of control units multiplexed as a service system and a standby system associated with monitoring and controlling of a plant is the standby system, a security processing unit that performs a security process for detecting the presence/absence of a security abnormality on the control unit that is the standby system, and a change instructing unit that outputs an instruction for changing the control unit that is the standby system and the control unit that is the service system with each other after the completion of the security process by the security processing unit.

主权项

1. A plant security managing device comprising a computer, the computer comprising:
circuitry configured to perform as
a determining unit that determines which one of elements multiplexed as an element of a service system and an element of a standby system associated with monitoring and controlling of a plant is the standby system;a security processing unit that performs a security process only on the element of the standby system; anda change instructing unit that outputs an instruction for changing the element of the standby system and the element of the service system with each other;a loading-factor determining unit that determines whether or not a loading factor of the element of the service system between the multiplexed elements exceeds a predetermined threshold; anda restraining unit that restrains the security process by the security processing unit on the element of the standby system in accordance with a determination result by the loading-factor determining unit.