"unplanned demand" is a correct and usable phrase in written English.
It can be used to describe an unexpected, often sudden, increase in demand for something. For example: "The company was unprepared for the unplanned demand for their new product, and had to ramp up production accordingly."
Expect some unplanned demands.
The NHS Trust Development Authority (TDA), which regulates the trusts, blamed the grim picture on "an unplanned growth in demand for care in a hospital setting, particularly in urgent and emergency care; a significant increase in the use of agency and contract staff; [and] failure to deliver the levels of cost improvement schemes planned at the start of the financial year".
"The potential strike reinforces the need for a more diverse transportation network that can aid when there are surges in demand or unplanned situations, like natural disasters," said Shaheen.
You spend a half-hour waiting in line for the first, and find that the walk to the second takes you past innumerable enticements, including myriad snack bars and gift shops, that demand an unplanned stop.
We want to separate this kind of behaviour from price adjustments "unplanned" related to greater demand uncertainty and other strategic interactions.
In this case, the focus for investigation was ill-defined hospital admissions in acute inpatient medical settings where managing demand for unplanned admissions is a priority and where there was little information about the incidence and outcomes of these admissions.
Patients requesting new appointments may encounter a variety of planned or unplanned means to manage their demand, including telephone triage and "advanced access" appointment systems, or long waiting times [ 11- 13].
Rapid urbanization has resulted in often unplanned increases in population, and food demand in cities. Historically, hinterlands to these cities have acted as breadbaskets producing food to the urban residents.
Unplanned changes in product mix and demand volume necessitate reconfiguration of these layouts.
