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Backflow Prevention > Quiz > Flashcards

Quiz Flashcards

1
Q

A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY TEST AND MAINTENANCE REPORT SHALL INCLUDE ALL OF THE FOLLOWING INFORMATION EXCEPT THE

A

DIFFERENTIAL PRESSURE RELIEF VALVE DISCHARGE READING

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2
Q

THE BY-PASS LINE OF AN APPROVED BACKFLOW PREVENTION ASSEMBLY MUST CONTAIN AN APPROVED ASSEMBLY OF EQUAL:

A

PROTECTION

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3
Q

AN ATMOSPHERIC TYPE VACUUM BREAKER SHALL NOT BE SUBJECTED TO WATER PRESSURE FOR PERIODS THAN ______ HOURS

A

TWELVE (12)

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4
Q

IT IS POSSIBLE FOR A PERFECT VACUUM AT SEA LEVEL TO RAISE WATER IN A PIPE APPROXIMATELY _________ FEET.

A

THIRTY-FOUR (34)

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5
Q

WHAT IS THE MOST DESIRABLE PLACE TO INSTALL A BACKFLOW PREVENTION DEVICE AND/OR ASSEMBLY?

A

IN AN ACCESSIBLE LOCATION ABOVE GROUND

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6
Q

WHICH OF THE FOLLOWING CONDITIONS COULD RESULT IN WATER CONTAMINATION THROUGH A CROSS-CONNECTION?

A

TURNING OFF SERVICE TO A MULTI-STORY BUILDING AND ALLOWING THE WATER SUPPLY TO DRAIN

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7
Q

WHAT IS ANOTHER TERM THAT DESCRIBES WATER QUALITY AS A HEALTH HAZARD RESULTING FROM BACKFLOW?

A

CONTAMINATION

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8
Q

THE VENTURI EFFECT STATES THAT WHEN THE WATER VELOCITY WITHIN THE PIPE INCREASES, THE PRESSURE:

A

DECREASES

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9
Q

THE DEGREE OF HAZARD IS:

A

BASED UPON THE QUALITY OF A NON POTABLE WATER SOURCE

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10
Q

BACKFLOW MAY BE DESCRIBED AS EITHER:

A

BACKPRESSURE OR BACKSIPHONAGE

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11
Q

THE FEDERAL LAW PLACING RESPONSIBILITY FOR THE PROTECTION OF THE PUBLIC WATER SUPPLY ON THE PURVEYOR OF WATER IS THE:

A

SAFE DRINKING WATER ACT

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12
Q

HOW MANY INCHES MUST A PRESSURE TYPE VACUUM BREAKER ASSEMBLY BE INSTALLED ABOVE ALL DOWNSTREAM PIPING?

A

TWELVE (12)

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13
Q

A DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY WILL PROTECT THE POTABLE WATER SUPPLY FROM:

A

NON-HEALTH HAZARD – BACKPRESSURE AND BACKSIPHONAGE

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14
Q

HOW MANY INCHES MUST AN ATMOSPHERIC VACUUM BREAKER BE INSTALLED ABOVE ALL DOWNSTREAM PIPING AND HIGHEST OPENING?

A

SIX (6)

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15
Q

AN ATMOSPHERIC VACUUM BREAKER IS INSTALLED TO PROTECT AGAINST:

A

BACKSIPHONAGE – HEALTH HAZARD OR NON-HEALTH HAZARD CONDITIONS

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16
Q

THE TERM “APPROVED REDUCED PRESSURE PRINCIPLE ASSEMBLY”, APPLIES TO AN ASSEMBLY WITH TWO SHUT-OFF VALVES, FOUR TEST COCKS AND:

A

TWO APPROVED CHECK VALVES AND A DIFFERENTIAL PRESSURE RELIEF VALVE

17
Q

IT IS REQUIRED THAT THE TEST GAUGE BE TESTED FOR ACCURACY AT LEAST:

A

ANNUALLY

18
Q

UNDERSIZED WATER PIPING CARRYING WATER AT HIGH VELOCITY CAN CAUSE BACKSIPHONAGE DUE TO:

A

THE ASPIRATOR EFFECT

19
Q

AN AIR GAP SEPARATION IS MEASURED FROM THE OUTLET OF THE DISCHARGE PIPE, TO THE:

A

FLOOD LEVEL RIM

20
Q

THE MINIMUM TYPE OF CONTAINMENT PROTECTION FOR A NON-HEALTH HAZARD, NON-CHEMICAL FIRE SPRINKLER SYSTEM IS A(N):

A

DOUBLE CHECK DETECTOR ASSEMBLY BACKFLOW PREVENTER

21
Q

THE TYPE OF PROTECTION REQUIRED FOR A CLOSED LOOP HEATING SYSTEM CONTAINING CHEMICALS IS:

A

REDUCED PRESSURE PRINCIPLE ASSEMBLY

22
Q

FOR CONTAINMENT PROTECTION IN A NON-HEALTH HAZARD SITUATION, THE MINIMUM PROTECTION REQUIRED SHALL BE:

A

DOUBLE CHECK BACKFLOW PREVENTION ASSEMBLY

23
Q

WATER CONTINUOUSLY LEAKING FROM TEST COCK #2 DURING A TEST PROCEDURE OF A PRESSURE VACUUM BREAKER ASSEMBLY IS PROBABLY CAUSED BY A LEAKING:

A

INLET SHUT-OFF VALVE #1

24
Q

THE REQUIRED BACKFLOW PREVENTION ASSEMBLY FOR A FIRE SUPPRESSION SYSTEM CONTAINING CHEMICALS IS:

A

REDUCED PRESSURE DETECTOR ASSEMBLY OR REDUCED PRESSURE PRINCIPLE ASSEMBLY

25
Q

THE REQUIRED TYPE OF BACKFLOW PROTECTION FOR A CLOSED LOOP PIPING SYSTEM CONTAINING GLYCOL IS:

A

REDUCED PRESSURE PRINCIPLE ASSEMBLY

26
Q

THE PRIMARY CONSIDERATION IN DETERMINING WHAT TYPE OF BACKFLOW PREVENTER TO INSTALL IS

A

DEGREE OF HAZARD

27
Q

WHAT IS THE PROBABLE CAUSE OF A RELIEF VALVE FAILING TO OPEN DURING A FIELD TEST ON A REDUCED PRESSURE PRINCIPLE BACKFLOW PREVENTER?

A

A MALFUNCTION OF THE RELIEF VALVE MECHANISM

28
Q

THE REQUIRED BACKFLOW PROTECTION FOR A CHEMICALLY CHARGED SOLAR HEATING SYSTEM WITH AN EXPANSION TANK IS A(N)

A

REDUCED PRESSURE PRINCIPLE ASSEMBLY

29
Q

THE TYPE OF PROTECTION ASSOCIATED WITH AN AIR GAP SEPARATION IS

A

A) BACKSIPHONAGE – NON-HEALTH HAZARD
B) BACKSIPHONAGE – HEALTH HAZARD
C) BACKPRESSURE – NON-HEALTH HAZARD
D) BACKPRESSURE – HEALTH HAZARD
E) ALL OF THE ABOVE

30
Q

THE APPLICATION OF A PRESSURE VACUUM BREAKER ASSEMBLY IS FOR:

A

BACKSIPHONAGE AND ISOLATION

Backflow Prevention (11 decks)

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