water distribution D1 and D2 Exam questions
with 100% Correct Solutions
Flush the eyes with a lot of water for approximately 15 minutes - ANSWER If your eyes
are exposed to chlorine, you should:
Take three repeat samples - one from the same location, one upstream and one
downstream - within 24 hours - ANSWER The first time a bacteriological sample
report comes back marked unsafe, you should
1.0 - ANSWER One PPM is equal to ___ mg/l
All of the above: Chemical processing plant, hospitals, wastewater treatment plant
- ANSWER A backflow prevention device is required on the water service line which
serves
5 feet - ANSWER Per OSHA regulations trench must be shored if it is ______ deep, or
deeper
All of the above:
incorrect installation, misjudgment of soil conditions, Heavy loads or failure to
consider change in weather - ANSWER The shoring systems sometimes fail due to
Nutating disc meter - ANSWER Which of the following meter is commonly installed in
a single family, residential, homes
No more than 12-inches above the floor - ANSWER The outlet of a forced
ventilation system for a chlorinator room should be located:
, Pressure-reducing - ANSWER Which of the following valves should be used when
it becomes necessary to supply water at different pressure zones
Sodium ions - ANSWER A water softening unit will exchange calcium and/or magnesium
ion with
De-energized, locked out and tagged out - ANSWER When any piece of electrical
equipment is being worked on, the circuit breaker should be
To ask the companies to locate and mark the location of all utilities in the area of the
repair job - ANSWER Why should operator contact "USA" or "Dig Alert" before
starting an underground repair job
Continuously - ANSWER During a confined space entry, how often should the
confined space be monitored for hazardous atmosphere?
Are sterilized by the laboratory and ready to use when received - ANSWER Sample
bottles which are furnished by a certified laboratory for collection of
bacteriological samples
Filled carefully to about an inch from the top - ANSWER A bacteriological sampling
bottle should be
Total and free chlorine in the water - ANSWER A DPD test is used to measure
40 lbs - ANSWER How many lbs. of chlorine gas per day can be withdrawn from a 150
lb cylinder operating at normal room temperature?
with 100% Correct Solutions
Flush the eyes with a lot of water for approximately 15 minutes - ANSWER If your eyes
are exposed to chlorine, you should:
Take three repeat samples - one from the same location, one upstream and one
downstream - within 24 hours - ANSWER The first time a bacteriological sample
report comes back marked unsafe, you should
1.0 - ANSWER One PPM is equal to ___ mg/l
All of the above: Chemical processing plant, hospitals, wastewater treatment plant
- ANSWER A backflow prevention device is required on the water service line which
serves
5 feet - ANSWER Per OSHA regulations trench must be shored if it is ______ deep, or
deeper
All of the above:
incorrect installation, misjudgment of soil conditions, Heavy loads or failure to
consider change in weather - ANSWER The shoring systems sometimes fail due to
Nutating disc meter - ANSWER Which of the following meter is commonly installed in
a single family, residential, homes
No more than 12-inches above the floor - ANSWER The outlet of a forced
ventilation system for a chlorinator room should be located:
, Pressure-reducing - ANSWER Which of the following valves should be used when
it becomes necessary to supply water at different pressure zones
Sodium ions - ANSWER A water softening unit will exchange calcium and/or magnesium
ion with
De-energized, locked out and tagged out - ANSWER When any piece of electrical
equipment is being worked on, the circuit breaker should be
To ask the companies to locate and mark the location of all utilities in the area of the
repair job - ANSWER Why should operator contact "USA" or "Dig Alert" before
starting an underground repair job
Continuously - ANSWER During a confined space entry, how often should the
confined space be monitored for hazardous atmosphere?
Are sterilized by the laboratory and ready to use when received - ANSWER Sample
bottles which are furnished by a certified laboratory for collection of
bacteriological samples
Filled carefully to about an inch from the top - ANSWER A bacteriological sampling
bottle should be
Total and free chlorine in the water - ANSWER A DPD test is used to measure
40 lbs - ANSWER How many lbs. of chlorine gas per day can be withdrawn from a 150
lb cylinder operating at normal room temperature?
