Preventive maintenance programs have been implemented on site with periodic regular inspections for processing equipment and utility machines. The preventive maintenance programs are planned based on time and condition of machines performing by both in-house maintenance team and experienced contractors. The frequency of maintenance works are according to the manufacturer's recommendations and also the plant's experience.
PM for utility systems such as chillers, cooling towers, air compressors are mainly performed by in-house staff. Major overhaul or repair is provided by contractors. For the air condition system, AHU is maintained monthly as usual.
Maintenance and inspection of the electrical system including electrical testing, functional test, retighten electrical connections, cleaning, and Infrared thermograph scanning etc. are annually performed. Generators are tested weekly and yearly on no-load test and full-load test, respectively.