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These practice certification questions are provided for your entertainment only. The actual certification examination at this Internet site is not available without a proper address and password. For information regarding this service, please contact DW&BP at backflow@dwbp-online.com.

These sample questions were published in the December 1997edition of DW&BP. Please remember that these questions are Copyright © 1997 by Drinking Water & Backflow Prevention magazine - ALL RIGHTS RESERVED. Simply stated, any reproduction of these questions without the written permission of DW&BP is forbidden. This includes the use of these materials in any classroom or educational setting. We ask that you contact us at dwbp.magazine@drstuasaype.com if you have any question.

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Dec_97-Quiz - Question #1

1		To prevent possible contamination from a hole in buried water piping, a parallel sewer line is buried below the waterline a minimum of ____ inches.
		a)	6
		b)	12
		c)	18
		d)	24
		e)	30

 

 

 

 

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #2

2		In a trench containing parallel water and sewer piping, the potable water piping shall be laid:
		a)	first
		b)	in a French drain
		c)	on a solid shelf
		d)	and wrapped in vinyl
		e)	with no hub coulplings

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #3

3		After the completed installation of a new potable water main, the disinfection procedure may constitute a(n):
		a)	confined space entry
		b)	isolation hazard
		c)	pressure surge
		d)	system demand
		e)	system hazard

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #4

4		A trap seal primer valve - drainage fed (ASSE 1044) requires the use of a(n):
		a)	air-gap separation
		b)	atmospheric vacuum breaker
		c)	double check valve assembly
		d)	fixture drainline
		e)	reduced pressure princple assembly

 

 

 

 

 

 

 

Dec_97-Quiz - Question #5

5		A trap seal primer valve - water supply fed (ASSE 1018) requires the use of a(n):
		a)	air-gap separation
		b)	atmospheric vacuum breaker
		c)	double check valve assembly
		d)	means to prevent backflow
		e)	reduced pressure principle assembly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #6

6

A water treatment plant's direct-mounted gas chlorinator contains a vacuum line and ejector with a(n):

a)

air-gap separation

b)

check valve

c)

day tank

d)

dual check valve

e)

Y-strainer

 

 

 

 

 

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #7

7		The Uniform Plumbing Code requires the supply lines or fittings for every plumbing fixture to be installed as to prevent:
		a)	backflow
		b)	closed systems
		c)	freezing
		d)	pressure loss
		e)	scalding

 

 

 

 

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #8

8		The International Plumbing Code requires heat exchanges using a toxic fluid to have a:
		a)	double check valve assembly
		b)	double wall construction with an air gap
		c)	reduced pressure princple assembly
		d)	single-wall construction
		e)	vacuum breaker

 

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #9

9		A deck-mounted vacuum breaker must be installed above the flood level rim a minimum of ___ inch(es).
		a)	1/2
		b)	1
		c)	2
		d)	6
		e)	12

 

 

 

 

 

 

 

 

Dec_97-Quiz - Question #10

10		If a hand-held shower (ASSE 1014) contains a backflow preventer with the vent ports pointing in a direction other than down, the ports must be:
		a)	accessible
		b)	corrosion resistant
		c)	mechanical
		d)	permanently marked
		e)	shielded against water entry
				(END OF EXAMINATION)

 

 

 

 

 

 

 

 

 

 

 

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December 1997 Test Your Skills

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