The phrase "a system under pressure" is correct and usable in written English.
It can be used to describe a situation where a system is experiencing stress or demands that exceed its normal capacity.
Example: "The engineers are working tirelessly to stabilize a system under pressure before the deadline."
Alternatives: "a system in distress" or "a system facing strain".
Chasing down journalists is a classic tell, the facial tic of a system under pressure.
For their part, the lawyers complain that they are overworked and underpaid in a system under pressure to produce a high volume of quick guilty pleas.
From the unique perspective of these boards, we see a system under pressure, struggling to respond to the complex needs of people, many of whom are in the wrong place.
For a system under pressure it can be tempting instead to turn to technology solutions where potentially one nurse could look after many people because she has so much data on how all of them are moving and sleeping, whether they're eating on schedule, etc.
"The NHS in Wales, as in all other parts of the United Kingdom, is a system under pressure," he said.
The Welsh NHS is a "system under pressure" and the ambulance service performance "not where we would like it to be", the health minister has said.
"This is the sign of a system under extraordinary pressure, with funding not keeping pace with the increased demands being placed upon it," said Thomas.
Later, he developed several new simulation techniques – now in common use – for exploring the behavior of liquids, such as simulation of a system under constant pressure and/or temperature.
In his model of this theory, he imagined the unconscious as a system under hydraulic pressure.
The sector is described as "a declining system under pressure" based on the pace of funding cuts over the long-term by the European University Association, which represents more than 850 institutions across 47 countries.
Kelsky also condemns soaring rises in salaries of university bosses as siphoning cash from a system under intense financial pressure, and when so many students and staff are struggling to subsist.
