What pressure points are measured during the pressure control service test?

The pressure control service test involves measuring specific pressure points that are critical for ensuring the reliable operation of fire department equipment under varying conditions. The correct answer highlights pressure points of 90 psi, 150 psi, and 250 psi because these measurements align with common operational standards for fire suppression systems and water supply operations.

Monitoring these pressures is essential for a few reasons:

1. 90 psi is generally the minimum required pressure for effective operation of fire pumps in many scenarios, allowing operators to assess the system's performance at lower pressure levels.

2. 150 psi represents an industry-standard pressure often used for calculating flow rates and evaluating pump performance during firefighting operations, providing a middle ground for practical operational assessments.

3. 250 psi serves as a threshold that challenges the equipment under higher operational stresses, simulating scenarios where maximum flow and pressure may be needed, such as in large-scale incidents.

By focusing on these varied pressure points, firefighters can ensure their systems are working efficiently across a range of conditions and can identify any issues that may affect pump performance or water delivery. The other options do not conform to these commonly accepted pressure benchmarks for modern firefighting operations.