Final answer:
The demand for LP during a lock-up test depends on factors such as the duration of the test, the size of the LP system, and the gas appliances connected to it.
Step-by-step explanation:
Determining the demand for LP (liquefied petroleum) during a lock-up test involves considering the specific requirements of the test. During a lock-up test, LP demand depends on factors such as the duration of the test, the size of the LP system, and the gas appliances connected to it.
For example, if the lock-up test lasts for 24 hours and the LP system is connected to a stove, water heater, and furnace, the demand can be estimated by calculating the gas consumption of each appliance over that period.
Ultimately, the LP demand during a lock-up test is determined by the usage and efficiency of the connected gas appliances during the specified test period.