FOAM TEST SYSTEM FOR FIREFIGHTING VEHICLE

摘要

Systems and methods for determining the accuracy of a foam addition system on a firefighting vehicle are disclosed. The methods may include measuring the amount of a test water stream flowing through a foam metering device.

主权项

1. A method of testing the accuracy of a firefighting vehicle's foam system, the method comprising:
(a) operating a pressurized foam addition system comprising a continuous flow loop in a normal mode, including:
(i) supplying a foam concentrate stream through a foam metering device to the flow loop;(ii) supplying a first tank water stream from a water tank on the vehicle to the flow loop; and(iii) mixing the foam concentrate stream and the first tank water stream to form a foam-and-water mixture by continuously circulating the foam-and-water mixture along the flow loop; (b) operating the foam addition system in a test mode, including:
(i) supplying a test water stream from the water tank through the foam metering device to the flow loop;(ii) supplying a second tank water stream from the water tank to the flow loop; and(iii) mixing the test water stream with the second tank water stream to form a test water/tank water mixture by continuously circulating the test water/tank water mixture along the flow loop; and (c) during at least a portion of step (b), measuring the amount of the test water stream flowing through the foam metering device.