• How many steam traps are installed in the steam crackers? Does PTTGC use a steam trap management program? What frequency of surveys is used? When was the last survey?
• Are cleaning strategies in use (e.g. furnace convection banks, CGC intercoolers, heat exchangers,…)
• Wear and tear, and recurring maintenance, of energy specific equipment, such as ejectors, control valves, steam traps, leaks, …