Unit 6

Activated carbon is produced from carbonaceous material, such as: (Select all that apply)

When testing boiler water, the operator should wear the following PPE: (Select all that apply)

Carbon dioxide dissolves in the liquid condensate and forms:

Corrosion rates associated with oxygen are not as high in chiller systems as they are in boilers or condensers because:

Manufacturer guidelines often recommend dosing heating and cooling systems with _____ initially to scavenge any oxygen:

Which of the following are the primary condensate tests operators should perform? (Select all that apply)

Boiler water with a pH of 6 is considered:

The two main corrosion tests operators perform on cooling water are:

Even in automated cooling systems an operator is crucial in:

The regenerant used to regenerate an anion demineralizer is:

Scaling in cooling towers can lead to:

In this type of deaerator water is broken up by nozzles emitting the steam:

Internal water treatment is:

Free corrosive carbon dioxide is released if the _____ concentration is excessive in the boiler.

What is the name of the form of corrosion which occurs when one part of the metal system is preferentially removed in a cooling system?:

To prevent solids of chlorides, silica, and iron from entering the boiler system the condensate passes through a:

The maintenance of the appropriate ratio of dissolved solids in the circulation water to the dissolved solids in the make-up feedwater is known as:

Scaling in cooling towers is not as severe as in boilers because:

Corrosion coupons used in cooling and heating systems should be removed and tested every:

These chemicals, used to protect against biological fouling, are poisonous and caution should be employed when working with them:

During the regeneration of a sodium zeolite water softener in the "Rinse" stage the item(s) going to the sewer is/are:

Which of the following is used to remove suspended matter from plugged filter beds?

Zeolite of a sodium zeolite softener may be discharged to the sewer during the:

Cooling towers by design use:

Generally, a target range for residual phosphate in boiler water is:

This type of blowdown is directly related to the amount of makeup water added to the cooling tower:

The main piece of equipment used to deliver titration reagents to samples is a:

Mixed bed polishers are usually designed for a high specific flow rate of:

The two main types of glycol used to prevent freezing in operating plants are:

Which of the following is an example of dissolved solids?

A common metal used for sacrificial anodes is:

These are commonly used in boiler water treatment programs to trap metallic ions and make scale more soluble:

This substance reacts with the calcium and magnesium ions and precipitates out of the solution:

Phenolphthalein is:

Pumps used for boiler chemical feed are normally of this type:

The main impurities of concern in condensate are:

The chemical equation, which represents the modification of bicarbonates in hard water by the use of a zeolite softener, is:

Monitoring make-up water and conductivity in your cooling system can be a good indicator of:

Cartridge type filters are similar to a filter found in:

It is important to keep the heat exchanger in your chiller system as clean as possible to maintain efficiency as well as to: