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TCEQ IRRIGATION LICENSE STUDY GUIDE
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TCEQ IRRIGATION LICENSE STUDY GUIDE
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TCEQ IRRIGATION LICENSE STUDY GUIDEBPA requirements for fertilizer injection system - -Reduced Pressure
Principle Assembly (RPPA) (RPZ) is required when fertilizer injection are
being used.
-Causes backsiphonage? - -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 - -Debris-can enter the valve. (Can use Y
strainer to provide a solution.)
-Definition of high-hazard system? - -Non-potable water, chemicals,
fertilizers
-Definition of cross-connection? - -Any actual or potential connection
between a potable water supply and any source of contamination or
pollution.
-Degree of hazard - -A measure of the degree of risk or harm to the public's
health.
-General installation requirements of BPA - -Device must check/pass Back-
siphonage, Back-pressure, constant pressure, non-health hazard, health
hazard.
-Installation requirements of AVB - --Installed 6" above the highest head or
outlet in the system.
-No Valves
-Downstream.
-Installed vertically.
-Installation and inspection requirements for public water system to BPA - -
-installation requirements of PVB - -12" above the highest sprinkler head
Vertically installed
-Installation requirments of RPZ - -12" above ground
-Installation requirements of DCV - -Horizontal or Vertical above or below
ground.
-Limits of Double check valve - -Is a high hazard/health hazard *
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