Either the systems are not released for checks or concerned agencies are not bothered. Facilities will be operated without checks, tests, repairs.
They may think that, nothing will happen and they can continue without checks or tests.
But, such checks help in knowing the integrity of the systems, functionality as per design and operational requirements, and thus ensure safety of persons, protection of environment and add to the profitability.
Occurrence of an event or incident can lead to catastrophic consequences and closure.
This realization should occur to everyone. It is true even in our day-to-day lives outside industrial organizations also.