Performing quality control activities represents increasingly important concerns for project managers and planners. Quality control activities serve as a safety mechanism that helps prevent occurrence of defects or failures in project facilities and products. Poor implementation of quality control activities often results in very large costs because even with minor defects or deviations, project re-organization may be required. Increased costs and delays may result in customer dissatisfaction. In the worst scenario, defects or failures may cause personal injuries to project participants.