IST · Integrated Systems Test
The final commissioning level (L5) that proves all facility systems work together under simulated full load.
Current numbers
CM / FT outcomescommissioning IST outcome: maintain load through required maintenance and fault tests under the selected standard's defined conditions
L1–L5electrical commissioning level taxonomy (factory test -> integrated systems test)
L1–L5commissioning ladder: factory → install → startup → functional/fault → integrated systems test