OIT Chemical Handling and Storage 3

Question 1

An operator notices a chemical container label is missing or illegible. What is the correct procedure?

Accepted Answer

Relabel the container immediately using proper chemical identification before use

Answer

Continue using the chemical as long as the color looks correct

Answer

Transfer the chemical to a new container without any label

Answer

Discard the chemical since it cannot be identified

Question 2

Which of the following best describes the purpose of a chemical metering pump at a water treatment plant?

Accepted Answer

To deliver precise, adjustable doses of chemical into the water treatment process

Answer

To transport bulk chemicals from delivery trucks to storage tanks

Answer

To mix two chemicals together before they enter the system

Answer

To test the concentration of chemicals in the finished water

Question 3

When hydrofluosilicic acid (fluoride) is used for fluoridation at a plant, what special precaution is required for the storage area?

Accepted Answer

The area must have acid-resistant secondary containment and proper ventilation

Answer

The area must be heated to above 90°F at all times

Answer

Fluoride must be stored with lime to stabilize it

Answer

The storage area must be pressurized to prevent fumes from escaping

Question 4

What does the term 'IDLH' stand for in the context of chemical hazards at water treatment facilities?

Accepted Answer

Immediately Dangerous to Life or Health

Answer

Immediate Dosing Limit for Hazardous liquids

Answer

Intermittent Daily Limit for Handling

Answer

Industrial Default Level of Hazard

Question 5

Which of the following is a key requirement when an operator transfers chemicals from a bulk storage tank to a day tank?

Accepted Answer

The operator must wear appropriate PPE and verify the correct chemical and destination tank

Answer

The transfer should always be done at night to avoid traffic

Answer

Chemical transfers require approval from the state regulatory agency each time

Answer

The transfer pump must always run at maximum flow rate

Question 6

Potassium permanganate (KMnO4) used in water treatment must be kept away from which of the following materials?

Accepted Answer

Organic materials, fuels, and reducing agents

Answer

Stainless steel equipment

Answer

Plastic storage containers

Answer

Cold water and ice

Question 7

If an operator spills a small amount of concentrated sulfuric acid on the floor of the chemical room, what is the correct immediate response?

Accepted Answer

Neutralize with a compatible material (e.g., sodium bicarbonate), contain the spill, and follow the SDS spill procedures

Answer

Mop it up immediately with paper towels and dispose of them

Answer

Dilute with large amounts of water from a hose immediately

Answer

Leave it to evaporate and then sweep up the residue