Test 3 Flashcards
(40 cards)
THE PRIMARY CONCERN OF THE WATER PURVEYOR WHERE AN AUXILIARY WATER SYSTEM IS MAINTAINED AND UTILIZED BY A CUSTOMER, IS TO ASSURE THAT __________.
A. THE AUXILIARY SYSTEM PRESSURE IS LESS THAN THE PUBLIC WATER SYSTEM PRESSURE.
B. AN APPROVED BACKFLOW PREVENTION ASSEMBLY IS INSTALLED ON THE SERVICE CONNECTION.
C. THE AUXILIARY SYSTEM IS CHLORINATED
D. THE AUXILIARY WATER SYSTEM IS METERED
B. AN APPROVED BACKFLOW PREVENTION ASSEMBLY IS INSTALLED ON THE SERVICE CONNECTION.
ATMOSPHERIC TYPE VACUUM BREAKERS SHALL NOT BE SUBJECTED TO CONTINUOUS WATER PRESSURE FOR PERIODS THAT LAST LONGER THAN _______.
A. 6 HOURS
B. 12 HOURS
C. 18 HOURS
D. 24 HOURS
B. 12 HOURS
WHAT CAUSES THE RELIEF VALVE TO CLOSE ON A REDUCED PRESSURE PRINCIPLE ASSEMBLY?
A. RELIEFT VALVE SPRING PRESSURE
B. SUPPLY SIDE WATER PRESSURE
C. PRESSURE DIFFERENTIAL BETWEEN CHECK VALVE #1 AND CHECK VALVE #2
D. ALL OF THE ABOVE
B. SUPPLY SIDE WATER PRESSURE
WHICH OF THE FOLLOWING CAN CAUSE A CHECK VALVE TO LEAK?
A. A DIRTY OR DAMGED CHECK DISC
B. DAMAGED CHECK SEAT
C. BROKEN OR DAMAGED SPRING
D. ALL OF THE ABOVE
D. ALL OF THE ABOVE
WHY IS THE RELIEF VALVE OF A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER SPRING LOADED?
A. TO REDUCE THE INCOMIN PRESSURE
B. TO FORCE THE RELIEF VALVE TO OPEN
C. TO FORCE THE #1 CHECK VALVE TO OPEN
D. TO FORVE THE RELIEF VALVE CLOSE
B. TO FORCE THE RELIEF VALVE TO OPEN
WHICH OF THE FOLLOWING IS INCLUDED IN A HIGH HAZARD CLASSIFICATION?
A. RADIOACTIVE WASTE
B. RAW SEWAGE
C. CAUSTIC SODA
D. ALL OF THE ABOVE
D. ALL OF THE ABOVE
THE PURPOSE FOR TESTING THE DIFFERENTIAL PRESSURE ON A BACKFLOW ASSEMBLY IS TO _________.
A. TO CHECK THE SPRING TENSION
B. TO MAKE SURE THE CHECK IS SEATED
C. TO RECORD FOR TEST REPORT
D. ALL OF THE ABOVE
D. ALL OF THE ABOVE
WHAT MAY CAUSE BACKSIPHONAGE IN A WATER DISTRIBUTION SYSTEM?
A. THE LOSS OF PRESSURE CAUSED BY A RUPTURED PIPE
B. HIGH DEMAND FOR WATER
C. CHANGE IN DIRECTION OF FLOW
D. ALL OF THE ABOVE
A. THE LOSS OF PRESSURE CAUSED BY A RUPTURED PIPE
A 1/4” DIAMETER POTABLE WATER SUPPLY SHALL HAVE AN AIR GAP SEPARATION BETWEEN THE SUPPLY PIPE AND THE FLOOD LEVEL RIM OF AT LEAST THIS MUCH.
A. 1/2”
B. 1”
C. 2”
D. 4”
B. 1”
WHICH OF THE FOLLOWING DOES NOT DETERMINE THE TYPE OF TEST PROCEDURE TO BE USED WHEN TESTING BACKFLOW ASSEMBLIES?
A. THE SIZE OF THE ASSEMBLY
B. THE TYPE OF ASSEMBLY
C. THE MANUFACTURER OF THE ASSEMBLY
D. BOTH A AND C
D. BOTH A AND C
THE PERFORMANCE REQUIREMENTS FOR BACKFLOW PREVENTION ASSEMBLY TEST KITS RECOMMENDS THE TEST EQUIPMENT BE CHECK FOR CALIBRATION AT LEAST ______.
A. MONTHLY
B. QUARTERLY
C. SEMI-ANNUALLY
D. ANNUALLY
D. ANNUALLY
WHAT WOULD YOU WRITE ON YOUR REPORT IF YOU FOUND A PRESSURE VACUUM BREAKER ASSEMBLY INSTALLED ON A BOILER?
A. PRESSURE VACUUM BREAKER ASSEMBLY SHOULD NOT BE INSTALLED HERE.
B. REDUCED PRESSURE PRINCIPLE ASSEMBLY SHOULD BE INSTALLED HERE.
C. DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY SHOULD BE INSTALLED HERE.
D. BOTH A & B
D. BOTH A & B
WHICH OF THE FOLLOWING DEVICES MAY BE USED TO CONTROL THERMAL EXPANSION PROBLEMS?
A. SOFT SEATING CHECK VALVES
B. PRESSURE RELIEF VALVES
C. THERMAL EXPANSION TANKS
D. BOTH
A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY MAY NOT BE USED TO PROTECT AGAINST ______.
A. CONTAMINANTS
B. POLLUTANTS
C. BACKPRESSURE
D. BACKSIPHONAGE
A. CONTAMINANTS
WHICH OF THE FOLLOWING IS NOT A REQUIRED PART OF AN ATMOSPHERIC TYPE VACUUM BREAKER?
A. AIR INLET FLOAT VALVE
B. THE BODY
C. AIR CANOPY
D. SHUT-OFF VALVE
D. SHUT-OFF VALVE
THERMAL EXPANSION _________________________________________.
A. IS THE PRESSURE INCREASE WHICH OCCURS IN A PIPING SYSTEM EVERY TIME A WATER HEATER COMES ON TO HEAT MORE WATER.
B. OCCURS IN ANY HOT WATER SYSTEM WHEN WATER IS HEATED OR RECOVERED DURING PERIODS OF NON-USE.
C. CAN CAUSE A DANGEROUS INCREASE IN PRESSURE.
D. ALL OF THE ABOVE ARE TRUE
D. ALL OF THE ABOVE ARE TRUE
WHILE TESTING A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER A FLUCTUATION IN THE PRESSURE DIFFERENTIAL DURING A STATIC CONDITION IS CAUSED BY _________.
A. RAPID CHANGE IN SUPPLY PRESSURE
B. BACKPRESSURE BACKFLOW
C. LEAKIGN #1 CHECK VALVE
D. LEAKING #2 CHECK VALVE
A. RAPID CHANGE IN SUPPLY PRESSURE
WHICH SHUT-OFF VALVE WOULD HAVE TO BE CLOSED BEFORE A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER ASSEMBLY CAN BE COMPLETELY TESTED?
A. SHUT-OFF VLAVE #1 ONLY
B. SHUT-OFF VALVE #2 ONLY
C. NEITHER SHUT-OF VALVES, #1 & #2
D. BOTH SHUT-OFF VALVES, # 1 & #2
B. SHUT-OFF VALVE #2 ONLY
IF THE AIR INLET VALVE OF THE PRESSURE VACUUM BREAKER ASSEMBLY WILL NOT SEAT _________.
A. IT SHOULD BE WIRED CLOSED
B. CHECK VALVE SHOULD BE REMOVED
C. CANOPY COVER SHOULD BE REPLACED
D. THE SUPPLY PRESSURE IS TOO LOW
D. THE SUPPLY PRESSURE IS TOO LOW
STATIC PRESSURE IS ____________.
A. PRODUCED BY FLUID IN MOTION
B. THE FORCE EXERTED BY A FLUID AT REST
C. THE FORCE EXERTED BY A CHANGE IN ATMOSPHERIC PRESSURE
D. NONE OF THE ABOVE
B. THE FORCE EXERTED BY A FLUID AT REST
WHEN FIELD TESTING A BACKFLOW PREVENTION DEVICE IN A CONFINED SPACE, WHICH OF THE FOLLOWING GUIDLINES SHOULD BE FOLLOWED?
A. REVIEW THE PROCEDURE(S) TO FOLLOW IN CASE OF EMERGENCY.
B. PERFORM ALL OF THE WORK AS A TEAM.
C. TEST ATMOSPHERE BEFORE ENTERING THE CONFINED SPACE.
D. ALL OF THE ABOVE
D. ALL OF THE ABOVE
THE RELIEF VALVE OF A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTOR OPERATES FROM THE INLET WATER PRESSURE AND THE WATER PRESSURE AT THE ____________.
A. #2 SHUT-OFF VALVE
B. ATMOSPHERIC VENT
C. #4 TESTCOCK
D. INTERMEDIATE ZONE PRESSURE
D. INTERMEDIATE ZONE PRESSURE
WHEN TESTING A RELIEF VALVE ON A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTOR ASSEMBLY, WHICH TEST COCKS SHOULD OPEN?
A. TEST COCKS 1 & 3
B. TEST COCKS 1 & 4
C. TEST COCKS 2 & 3
D. TEST COCKS 3 & 4
C. TEST COCKS 2 & 3
WHICH OF THE FOLLOWING IS NOT A CAUSE OF BACKPRESSURE?
A. ELEVATED PLUMBING
B. THERMAL EXPANSION
C. PUMPS
D. ASPIRATION
D. ASPIRATION
