Operational improvement effect calculation device, operational improvement effect calculation method and recording medium

An operational improvement effect calculation method, comprising:

• retrieving, from inputted plant operation data relating to operations of a plant, comparison target plant operation data which includes more than one plant operation data points similar to a plant operation indicated by evaluation target plant operation data which is plant operation data of an evaluation target;
• calculating a first post-improvement evaluation indicator based on the evaluation target plant operation data and a first pre-improvement evaluation indicator based on each data point of the comparison target plant operation data;
• calculating a first confidence interval, based on the comparison target plant operation data;
• calculating a first baseline, which is a reference when comparing the first post-improvement evaluation indicator and the first pre-improvement evaluation indicator and corresponds to the first pre-improvement evaluation indicator, based on the first confidence interval;
• and
• calculating a first evaluation result on the plant, based on the first post-improvement evaluation indicator and the first baseline.

A non-transitory computer-readable recording medium that stores therein a program for causing a computer to execute a process, the process comprising:

• retrieving, from inputted plant operation data relating to operations of a plant, comparison target plant operation data which includes more than one plant operation data points similar to a plant operation indicated by evaluation target plant operation data which is plant operation data of an evaluation target;
• calculating a first post-improvement evaluation indicator based on the evaluation target plant operation data and a first pre-improvement evaluation indicator based on each data point of the comparison target plant operation data;
• calculating a first confidence interval, based on the comparison target plant operation data;
• calculating a first baseline, which is a reference when comparing the first post-improvement evaluation indicator and the first pre-improvement evaluation indicator and corresponds to the first pre-improvement evaluation indicator, based on the first confidence interval;
• and
• calculating a first evaluation result on the plant, based on the first post-improvement evaluation indicator and the first baseline.