TCEQ irrigation license study guide latest updated

BPA requirements for fertilizer injection system - ANSWER Reduced Pressure Principle Assembly (RPPA) (RPZ) is required when fertilizer injection are being used. Causes backsiphonage? - ANSWER Caused by a negative or Subatmospheric 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 - ANSWER Debris-can enter the valve. (Can use Y strainer to provide a solution.) Definition of high-hazard system? - ANSWER Non-potable water, chemicals, fertilizers Definition of cross-connection? - ANSWER Any actual or potential connection between a potable water supply and any source of contamination or pollution. Degree of hazard - ANSWER A measure of the degree of risk or harm to the public's health.