Security & Safety

Question 1

Which is the most important thing to consider in automatic startup after a power failure?

a. Operator safety
b. Power surges that could trip a breaker
c. Importance to process
d. Importance to water quality

Answer 1

a. Operator safety

Question 2

At which range of temperature will fusible plugs on chlorine cylinders melt?

a. 147 to 152^o F
b. 155 to 159^o F
c. 157 to 162^o F
d. 167 to 171^o F

Answer 2

c. 157 to 162^o F

Question 3

When a chlorine cylinder or container is changed, a new gasket should be used ________.

a. every time.
b. after 2 uses.
c. after 3 uses.
d. after 4 or 5 uses.

Answer 3

a. every time.

Question 4

Which is the best type of gasket to use when connecting a chlorine cylinder or container to the chlorine feed system?

a. Fiber gasket
b. Aluminum gasket
c. Copper gasket
d. Lead gasket

Answer 4

d. Lead gasket

Question 5

Which part of the human body is the most vulnerable to allowing microorganisms to enter it?

a. Stomach area where most of the organs are located
b. Heart
c. Eyes
d. Throat and neck area

Answer 5

c. Eyes

Question 6

Which will occur if dry alum and quicklime are mixed together?

a. Highly explosive hydrogen gas will be released.
b. Dust may be released which may cause an explosion.
c. A coagulated gel will form.
d. Nothing, as they are neutral toward each other.

Answer 6

a. Highly explosive hydrogen gas will be released.

Question 7

Chlorine gas ________.

a. will burn in the presence of oxygen and moisture.
b. will explode in the presence of oxygen and an ignition source.
c. will support combustion.
d. will conduct electricity.

Answer 7

c. will support combustion.

Question 8

Chlorine storage rooms should ________.

a. have sealed walls and doors that open inward.
b. be fitted chlorine-resistant power exhaust fans ducted out at ceiling level.
c. have lights and fans on the inside and wired to the same switch.
d. have a window in the door so an operator can look into the room to detect any abnormal conditions.

Answer 8

d. have a window in the door so an operator can look into the room to detect any abnormal conditions.

Question 9

Before an authorized entrant enters a permitted confined space, ________.

a. he or she must don SCUBA gear.
b. the internal atmosphere of the space must be tested to measure oxygen content, presence of flammable gases and vapors, and potentially toxic air contaminants.
c. verify the availability of rescue services.
d. ensure there is adequate lighting in the space to conduct the necessary work.

Answer 9

b. the internal atmosphere of the space must be tested to measure oxygen content, presence of flammable gases and vapors, and potentially toxic air contaminants.

Question 10

Fluoride injection should be as far away as possible from any chemical that contains _________.

a. chlorine.
b. aluminum (from alum).
c. calcium.
d. sodium (for example, soda ash).

Answer 10

c. calcium.

Question 11

Water treatment personnel should only use self-contained breathing apparatus equipment that has been approved by _________.

a. the Occupational Safety and Health Administration (OSHA).
b. their state’s department of Public Health.
c. the National Institute of Occupational Safety and Health (NIOSH).
d. the American Standards and Testing Methods.

Answer 11

c. the National Institute of Occupational Safety and Health (NIOSH).

Question 12

If a substantial chlorine leak incident occurs, which agency should be called for actual hands-on assistance?

a. The Occupational Safety and Health Administration (OSHA)
b. The Chemical Transportation Emergency Center
c. The Transportation Emergency Institute
d. The Chlorine Institute

Answer 12

b. The Chemical Transportation Emergency Center

Question 13

In regards to safety, wet activated carbon will remove which from the air?

a. Organic gases and hydrogen sulfide
b. Oxygen
c. Carbon dioxide
d. Carbon monoxide

Answer 13

b. Oxygen

Question 14

An employee’s average airborne exposure in any 8-hour shift in a 40-hour workweek that should not be exceeded is called _________.

a. Short Term Exposure Limit (STEL).
b. Time-Weighted Average (TWA).
c. Threshold Limit Value (TLV).
d. Recommended Exposure Limits (REL).

Answer 14

b. Time-Weighted Average (TWA).

Question 15

Sites are required to do a site assessment under the process safety management (PSM) regulations (OSHA) if the facility in a single process has more than how many pounds of chlorine?

a. 1,000 lb
b. 1,500 lb
c. 2,000 lb
d. 4,000 lb

Answer 15

b. 1,500 lb

Question 16

Which factor is used to express the relative volatility of a substance?

a. Chaitin’s constant
b. Feigenbaum constant
c. Henry’s constant
d. Boyle’s Law

Answer 16

c. Henry’s constant

Question 17

Ammonia gas can be fatal to humans at concentrations as low as _________.

a. 500 ppm.
b. 900 ppm.
c. 1,400 ppm.
d. 2,000ppm.

Answer 17

d. 2,000ppm.

Question 18

Which emergency kit is for chlorine tank cars?

a. Kit A
b. Kit B
c. Kit C
d. Kit D

Answer 18

c. Kit C

Question 19

Each year approximately which percentage of confined space deaths are would-be rescuers?

a. 25%
b. 50%
c. 67%
d. 75%

Answer 19

c. 67%

Question 20

When a water source is destroyed or damaged due to some disaster that causes total contamination, which would be a short-term goal?

a. Install a dual potable-nonpotable water system
b. Contruct a new raw water source
c. Clean up the source of contamination caused by the disaster
d. Draw water from an adjoining system or systems

Answer 20

d. Draw water from an adjoining system or systems