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TCEQ IRRIGATION LICENSE STUDY GUIDE (QUESTIONS AND ANSWERS), Exams of Civil Engineering
TCEQ IRRIGATION LICENSE STUDY GUIDE (QUESTIONS AND ANSWERS) BPA requirements for fertilizer injection system - ANS-✔✔Reduced Pressure Principle Assembly (RPPA) (RPZ) is required when fertilizer injection are being used. Causes backsiphonage? - ANS-✔✔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 - ANS-✔✔Debris-can enter the valve. (Can use Y strainer to provide a solution.) Definition of high-hazard system? - ANS-✔✔Non-potable water, chemicals, fertilizers Definition of cross-connection? - ANS-✔✔Any actual or potential connection between a potable water supply and any source of contamination or pollution. Degree of hazard - ANS-✔✔A measure of the degree of risk or harm to the public's health. General installation requirements of BPA - ANS-✔✔Device must check/pass Back-siphonage, Backpressure, constant pressure, no
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