You have just started a new job as a maintenance engineer at an industrial water treatment plant. While reviewing operations, you find that the maintenance department is replacing seal gaskets throughout the plant every 6 months (2,000 operational hours, out of 4,000 annual operational hours).

If each seal costs a total of $80, and failure of a seal costs $800, what are the total planned and unplanned maintenance costs for this seal gasket, if the gasket has a Weibull distributed time to failure with a characteristic life of 4,000 hours and a shape factor of 3.5?