Information Technology Reference
In-Depth Information
3 Plant Operation Model
3.1 Overview
Figure 1 shows our proposed model, the “Plant Operation Model.” This model
consists of three components, the plant environment, the event, and the worker
agent. The plant environment represents the work place of the worker agents and
outputs the production rate as the results from the daily production. The event
represents an incident that can grow from a risk to a fatal accident. The worker
agent represents one plant worker who solves the problems in the plants. In this
model, the plant environment generates the events in proportion to the current
production rate, and the worker agent tackles and processes the generated events.
The remaining events, which are not processed by the worker agents, reduce the
production rate and grow worse over time. In a worst case scenario, the plant
production rate becomes zero, which means the plant stops production due to a
fatal accident. We can represent two plant features using this model, the human
factors deciding the daily production rate and the plant workers passively solving
their problems. We describe the implementation to estimate the production rate
limits for the human related risk tolerance in the sections that follow.
Generate events
Process events
Plant environment
Event
Worker agents
Output
Reduce production rate
Production rate
Fig. 1.
Overview of plant operation model
3.2 Plant Environment
In this implementation, the plant environment has the following parameters:
-
production rate
r
,
-
maximum event generation quantity
M
,and
-
maximum event generation probability
P
.
Production rate
r
is a real number with a [0
,
1] interval, and is calculated at
every time step. It represents how eciently the plant runs. Maximum event
