'constant inspection' is correct and usable in written English.
This phrase is often used to describe a situation in which someone or something is constantly watched, observed, or monitored. For example, "The security guard was on constant inspection of the building."
All complex aerospace vehicles, he said, require "constant inspection and maintenance to ensure that they are ready to fly".
Since air tends to escape through the upper part of the tunnel, constant inspection and repair of leaks with straw and mud are required.
Beneath the weighty speculation concerning his future and the constant inspection of his every unhappiness, Patrick Ewing's inflated pride acted as a life preserver last night at Madison Square Garden.
And yet, this Revolutionary landscape is today not so much neglected as forgotten, or rushed by, its founding details mostly lost to constant inspection, trammeled by the machinations of business and real estate.
You don't have the trouble of constant inspection and censors in China.
My sense has always been that, although I didn't understand it all, the law and lawyers mostly tried to do their work for good and that the legal system was progressive and under constant inspection and revision to become more just and equal for all.
Mr. Bridge said his mine was subject to nearly constant inspections that looked into all aspects of the mine, including safety, noise levels and electrical equipment.
The only way to get good quality in China is through constant inspections and monitoring.
In the hotels and apartments that were created for the migrant labors, constant inspections were done so that those out of employment would be arrested forced back to the rural areas.
In particular, Charles MacIver's constant inspections were responsible for the firm's safety discipline.
But protesters responded that they had done their best to comply with health and safety officials' constant inspections of their campground, and claimed the action was a politically motivated effort to clamp down on them.
