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Backflow prevention QUESTIONS AND CORRECT ANSWERS GRADED A+ 2024/2025
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Backflow prevention QUESTIONS AND CORRECT ANSWERS GRADED A+ 2024/2025
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Backflow preventionDIFFERENTIAL PRESSURE RELIEF VALVE DISCHARGE READING - ANSA DOUBLE
CHECK BACKFLOW PREVENTION ASSEMBLY TEST AND MAINTENANCE REPORT
SHALL INCLUDE ALL OF THE FOLLOWING INFORMATION EXCEPT THE
TWELVE (12) - ANSAN ATMOSPHERIC TYPE VACUUM BREAKER SHALL NOT BE
SUBJECTED TO WATER PRESSURE FOR PERIODS THAN ______ HOURS.
33.Nine - ANSIT IS POSSIBLE FOR A PERFECT VACUUM AT SEA LEVEL TO RAISE
WATER IN A PIPE APPROXIMATELY _________ FEET.
IN AN ACCESSIBLE LOCATION ABOVE GROUND - ANSWHAT IS THE MOST
DESIRABLE PLACE TO INSTALL A BACKFLOW PREVENTION DEVICE AND/OR
ASSEMBLY?
TURNING OFF SERVICE TO A MULTI-STORY BUILDING AND ALLOWING THE WATER
SUPPLY TO DRAIN - ANSWHICH OF THE FOLLOWING CONDITIONS COULD RESULT
IN WATER CONTAMINATION THROUGH A CROSS-CONNECTION?
CONTAMINATION - ANSWHAT IS ANOTHER TERM THAT DESCRIBES WATER QUALITY
AS A HEALTH HAZARD RESULTING FROM BACKFLOW?
DECREASES - ANSTHE VENTURI EFFECT STATES THAT WHEN THE WATER
VELOCITY WITHIN THE PIPE INCREASES, THE PRESSURE:
BASED UPON THE QUALITY OF A NON POTABLE WATER SOURCE - ANSTHE
DEGREE OF HAZARD IS:
BACKPRESSURE OR BACKSIPHONAGE - ANSBACKFLOW MAY BE DESCRIBED AS
EITHER:
TWELVE (12) - ANSHOW MANY INCHES MUST A PRESSURE TYPE VACUUM BREAKER
ASSEMBLY BE INSTALLED ABOVE ALL DOWNSTREAM PIPING?
NON-HEALTH HAZARD - BACKPRESSURE AND BACKSIPHONAGE - ANSA DOUBLE
CHECK BACKFLOW PREVENTION ASSEMBLY WILL PROTECT THE POTABLE WATER
SUPPLY FROM:
SIX (6) - ANSHOW MANY INCHES MUST AN ATMOSPHERIC VACUUM BREAKER BE
INSTALLED ABOVE ALL DOWNSTREAM PIPING AND HIGHEST OPENING?
BACKSIPHONAGE - HEALTH HAZARD OR NON-HEALTH HAZARD CONDITIONS -
ANSAN ATMOSPHERIC VACUUM BREAKER IS INSTALLED TO PROTECT AGAINST:
, TWO APPROVED CHECK VALVES AND A DIFFERENTIAL PRESSURE RELIEF VALVE -
ANSTHE TERM "APPROVED REDUCED PRESSURE PRINCIPLE ASSEMBLY", APPLIES
TO AN ASSEMBLY WITH TWO SHUT-OFF VALVES, FOUR TEST COCKS AND:
ANNUALLY - ANSIT IS REQUIRED THAT THE TEST GAUGE BE TESTED FOR
ACCURACY AT LEAST:
THE ASPIRATOR EFFECT - ANSUNDERSIZED WATER PIPING CARRYING WATER AT
HIGH VELOCITY CAN CAUSE BACKSIPHONAGE DUE TO:
FLOOD LEVEL RIM - ANSAN AIR GAP SEPARATION IS MEASURED FROM THE
OUTLET OF THE DISCHARGE PIPE, TO THE:
DOUBLE CHECK DETECTOR ASSEMBLY BACKFLOW PREVENTER - ANSTHE
MINIMUM TYPE OF CONTAINMENT PROTECTION FOR A NON-HEALTH HAZARD,
NON-CHEMICAL FIRE SPRINKLER SYSTEM IS A(N):
REDUCED PRESSURE PRINCIPLE ASSEMBLY (RPZ) - ANSTHE TYPE OF
PROTECTION REQUIRED FOR A CLOSED LOOP HEATING SYSTEM CONTAINING
CHEMICALS IS:
DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY - ANSFOR CONTAINMENT
PROTECTION IN A NON-HEALTH HAZARD SITUATION, THE MINIMUM PROTECTION
REQUIRED SHALL BE:
INLET SHUT-OFF VALVE #1 - ANSWATER CONTINUOUSLY LEAKING FROM TEST
COCK #2 DURING A TEST PROCEDURE OF A PRESSURE VACUUM BREAKER
ASSEMBLY IS PROBABLY CAUSED BY A LEAKING:
REDUCED PRESSURE DETECTOR ASSEMBLY OR REDUCED PRESSURE PRINCIPLE
ASSEMBLY - ANSTHE REQUIRED BACKFLOW PREVENTION ASSEMBLY FOR A FIRE
SUPPRESSION SYSTEM CONTAINING CHEMICALS IS:
REDUCED PRESSURE PRINCIPLE ASSEMBLY (RPZ) - ANSTHE REQUIRED TYPE OF
BACKFLOW PROTECTION FOR A CLOSED LOOP PIPING SYSTEM CONTAINING
GLYCOL IS:
DEGREE OF HAZARD - ANSTHE PRIMARY CONSIDERATION IN DETERMINING WHAT
TYPE OF BACKFLOW PREVENTER TO INSTALL IS:
A MALFUNCTION OF THE RELIEF VALVE MECHANISM - ANSWHAT IS THE PROBABLE
CAUSE OF A RELIEF VALVE FAILING TO OPEN DURING A FIELD TEST ON A
REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER?
REDUCED PRESSURE PRINCIPLE ASSEMBLY (RPZ) - ANSTHE REQUIRED
BACKFLOW PROTECTION FOR A CHEMICALLY CHARGED SOLAR HEATING SYSTEM
WITH AN EXPANSION TANK IS A(N):
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