TCEQ CLASS B SURFACE WATER B TEST MATERIAL -EXAM
WITH QUESTIONS AND CORRECT ANSWERS| LATEST UPDATE |
VERIFIED RATED A+ REVIEW
What does the Texas Hazard Communication Act require an
employer to provide to the employees?
The Texas Hazards Communication act requires employers to
provide information and training to employees on the hazards
of chemicals that they use or work with.
An employee will not follow safety rules and feels like they do
not have to followed. What should an employer do?
Document employee's actions and counsel employee. If he
does not respond discharge him.
What is one method of ensuring safety in a trench or
excavation?
One method of ensuring safety and health of workers in a
trench or excavation is to slope the sides of the cut to the
"angle of repose", or the angle closet to the perpendicular at
which the soil will remain at rest without shoring. Angle of
repose is determined by soil type and ditch conditions.
,What is the minimum width for any ditch with workers?
The minimum width for any ditch in which workers must work
is 18 inches. A ditch for water main construction should be at
least 12 inches wider than the outside pipe diameter. Ditch
should be as narrow as practical to prevent excessive trench
load on the pipe. The wider the trench, the more trench load is
placed on the pipe.
What causes most underground pipe failures?
90% of underground pipe failures are related to improper
backfill and lack of proper bedding.
An operator hears pinging in the pump. What is causing this?
Cavitation, caused by formation and collapse of bubbles in the
water which causes noise and vibration. Pitting of metal may
result if cavitation is not eliminated.
What does a check valve on the pump discharge do?
A check valve on the pump discharge of a pump prevents
back-flow.
,Customer complains about low water pressure. What should
operator do?
All complaints should be throughly checked out by a
representative of the municipality who can deal with the public
in a calm and dignified manner. Some causes of low water
pressure are clogged screens on faucets, a lean or break in
the area, flushing of water mains, build up in pipes or meter, a
partially closed valve, heavy water use during summer and fire
rescue.
What is the quality of raw water affected by?
The quality of raw water in any geographic locality is
determined primarily by natural factors such as geology,
topography, and climate in each locality.
What can affect chemical activity/reactivity in water?
Chemical activity in the water is governed by temperature,
with greater activity accruing at higher temperatures and
lower activity at lower.
, What is a public water system?
A public water system is any water system that provides the
public with piped water for human consumption with at least
15 connection or regularly serves at least 25 individuals daily
at-least 60 days out of the year. A public water system is
either a community water system or a non-community water
system.
What happens during thermal stratification in a body of water?
Thermal stratification causes the bottom layer of water to lose
oxygen resulting in anaerobic decomposition of organic
material. In this process, hydrogen sulfide is produced there
by lowering the ph that causes iron and manganese from the
soil to become soluble. This also causes a noticeable increase
in carbon dioxide. This causes water quality deterioration.
If the stratification layers mix (the lake turns over).
Lake/Reservoir turn over occurs when cold heavy dense water
develops above warm water, light (less dense) water and
layers stabilize by exchanging places.
What is a standard solution?
A standard solution is a solution of known strength or
concentration.
WITH QUESTIONS AND CORRECT ANSWERS| LATEST UPDATE |
VERIFIED RATED A+ REVIEW
What does the Texas Hazard Communication Act require an
employer to provide to the employees?
The Texas Hazards Communication act requires employers to
provide information and training to employees on the hazards
of chemicals that they use or work with.
An employee will not follow safety rules and feels like they do
not have to followed. What should an employer do?
Document employee's actions and counsel employee. If he
does not respond discharge him.
What is one method of ensuring safety in a trench or
excavation?
One method of ensuring safety and health of workers in a
trench or excavation is to slope the sides of the cut to the
"angle of repose", or the angle closet to the perpendicular at
which the soil will remain at rest without shoring. Angle of
repose is determined by soil type and ditch conditions.
,What is the minimum width for any ditch with workers?
The minimum width for any ditch in which workers must work
is 18 inches. A ditch for water main construction should be at
least 12 inches wider than the outside pipe diameter. Ditch
should be as narrow as practical to prevent excessive trench
load on the pipe. The wider the trench, the more trench load is
placed on the pipe.
What causes most underground pipe failures?
90% of underground pipe failures are related to improper
backfill and lack of proper bedding.
An operator hears pinging in the pump. What is causing this?
Cavitation, caused by formation and collapse of bubbles in the
water which causes noise and vibration. Pitting of metal may
result if cavitation is not eliminated.
What does a check valve on the pump discharge do?
A check valve on the pump discharge of a pump prevents
back-flow.
,Customer complains about low water pressure. What should
operator do?
All complaints should be throughly checked out by a
representative of the municipality who can deal with the public
in a calm and dignified manner. Some causes of low water
pressure are clogged screens on faucets, a lean or break in
the area, flushing of water mains, build up in pipes or meter, a
partially closed valve, heavy water use during summer and fire
rescue.
What is the quality of raw water affected by?
The quality of raw water in any geographic locality is
determined primarily by natural factors such as geology,
topography, and climate in each locality.
What can affect chemical activity/reactivity in water?
Chemical activity in the water is governed by temperature,
with greater activity accruing at higher temperatures and
lower activity at lower.
, What is a public water system?
A public water system is any water system that provides the
public with piped water for human consumption with at least
15 connection or regularly serves at least 25 individuals daily
at-least 60 days out of the year. A public water system is
either a community water system or a non-community water
system.
What happens during thermal stratification in a body of water?
Thermal stratification causes the bottom layer of water to lose
oxygen resulting in anaerobic decomposition of organic
material. In this process, hydrogen sulfide is produced there
by lowering the ph that causes iron and manganese from the
soil to become soluble. This also causes a noticeable increase
in carbon dioxide. This causes water quality deterioration.
If the stratification layers mix (the lake turns over).
Lake/Reservoir turn over occurs when cold heavy dense water
develops above warm water, light (less dense) water and
layers stabilize by exchanging places.
What is a standard solution?
A standard solution is a solution of known strength or
concentration.
