TCEQ IRRIGATION LICENSE STUDY GUIDE questions with correct answers

BPA requirements for fertilizer injection system CORRECT ANSWER-Reduced Pressure Principle Assembly (RPPA) (RPZ) is required when fertilizer injection are being used. Causes backsiphonage? CORRECT ANSWER-Caused by a negative or Sub-atmospheric pressure. Example-City departments are using fire hydrant or there's a city main line break, or someone sucking liquid from a glass using a straw. Causes of leaking check valve CORRECT ANSWER-Debris-can enter the valve. (Can use Y strainer to provide a solution.) Definition of high-hazard system? CORRECT ANSWER-Non-potable water, chemicals, fertilizers Definition of cross-connection? CORRECT ANSWER-Any actual or potential connection between a potable water supply and any source of contamination or pollution. Degree of hazard CORRECT ANSWER-A measure of the degree of risk or harm to the public's health. General installation requirements of BPA CORRECT ANSWER-Device must check/pass Back-siphonage, Back-pressure, constant pressure, non-health hazard, health hazard. Installation requirements of AVB CORRECT ANSWER--Installed 6" above the highest head or outlet in the system.