In refining, what is primarily aimed for by optimizing operations through computer modeling?

The focus of optimizing operations through computer modeling in refining is primarily to predict performance outcomes. This approach allows refineries to simulate various scenarios and evaluate how changes in processes, equipment, and conditions can influence the final products and overall efficiency. By using computer models, refiners can assess the impact of operational changes before they are implemented in real-time, leading to better decision-making and enhanced performance.

Computer modeling can help identify the most efficient operating parameters, forecast production rates, and analyze potential bottlenecks or failures in the system. This not only improves operational efficiency but also aids in maintaining product quality and maximizing profitability. Thus, the ability to predict performance outcomes effectively supports strategic planning and optimization efforts in the refining sector.

In contrast, the other options do not align with the primary objectives of computer modeling in refining. Reducing product variety may not be conducive to market demands, maximizing environmental hazards contradicts industry goals, and minimizing employee involvement can overlook the importance of human oversight in operations.