Why must heat exchangers be sited with special consideration for maintenance?

Correct answer: So that the tube bundles can be easily withdrawn for cleaning and replacement.

Explanation

A key maintenance activity for shell-and-tube heat exchangers is the removal of the tube bundle for cleaning or repair. Plant layout must provide sufficient clear space (a 'pulling area') to allow this operation.

Other questions

Question 1

Which factor is considered an overriding consideration in site selection, to the extent that a site should be chosen that is close to at least two major forms of it?

Question 2

What is the typical minimum spacing recommended for process units in a preliminary site layout to provide a safe distance for hazardous processes?

Question 3

Which environmental act introduced the 'cradle to grave' approach, making a waste producer legally liable from the moment waste is produced until its final disposal?

Question 4

According to the hierarchy of waste management approaches, what is the most preferable strategy?

Question 5

Which of the following is listed as an advantage of using modular construction for a chemical plant?

Question 6

In a site layout, where should administration offices and laboratories, which have a relatively large number of workers, be located?

Question 7

What is the minimum distance from the site boundary that storage tanks containing hazardous materials should be sited?

Question 8

The Clean Air Act (CAA) empowers the EPA to set National Ambient Air Quality Standards (NAAQS) for seven contaminants. Which of the following is NOT on that list?

Question 9

What is the primary goal of the Superfund Act, also known as CERCLA?

Question 10

What is the first step in the five-step review technique for waste minimization?

Question 11

When is it less critical for a plant to be located close to its primary marketing area?

Question 12

What type of building is normally used for process equipment in chemical plants?

Question 13

Which U.S. federal law was enacted in the aftermath of the Exxon Valdez oil spill and created a tax on oil to cover the cost of responding to major spills?

Question 14

In the context of aqueous waste treatment, what does the BOD5 test measure?

Question 15

What is a primary reason for elevating the base of a distillation column in plant layout?

Question 16

Which Canadian law charges Environment Canada with controlling toxic substances, reducing pollution, and eliminating persistent bio-accumulating toxic substances?

Question 17

What is a key benefit of using computer-aided design (CAD) tools for plant layout compared to physical models?

Question 18

What is the primary purpose of an environmental audit or environmental impact assessment?

Question 19

Which of the following ancillary buildings or services should be sited to give the most economical run of pipes to and from the process units?

Question 21

Which piece of U.S. legislation first established the Council on Environmental Quality in the Executive Office of the President?

Question 22

What is a primary consideration for the location of oil refineries?

Question 23

A life cycle assessment is a more exhaustive procedure than environmental auditing. What is a key difference in its scope?

Question 24

One of the listed strategies for source reduction in waste minimization is to 'Protect catalysts and adsorbents'. How is this typically accomplished?

Question 25

Which method is described as probably the most widely used for removing gaseous pollutants from high-volume gas streams?

Question 26

Why might a plant site with high ambient humidity be unattractive for certain cooling methods?

Question 27

What is the second step in the hierarchy of waste management approaches, after source reduction?

Question 28

What does the Canadian Water Act empower the Minister of the Environment to do?

Question 29

Regarding plant layout, what is a key safety requirement for process buildings?

Question 30

What is the primary function of the Resource Conservation and Recovery Act (RCRA) of 1976?

Question 31

When siting cooling towers, what consideration should be given to the prevailing wind?

Question 32

According to the text, which is one of the listed disadvantages of modular plant construction?

Question 33

What was the purpose of the Superfund Amendments and Reauthorization Act (SARA) of 1986?

Question 34

In the five-step review for waste minimization, what is the third step?

Question 35

Among the principal factors to consider in plant layout, which category includes construction and operating costs?

Question 36

What is the primary objective of the U.S. Pollution Prevention Act (PPA) of 1990?

Question 37

In aqueous waste treatment, how is the pH of an acidic effluent frequently neutralized?

Question 38

Which of these is NOT listed as one of the principal factors to consider in plant layout?

Question 39

What is the primary reason that oil refineries tend to be located close to major population centers?

Question 40

What is one of the main goals of the U.S. National Environmental Policy Act (NEPA)?

Question 41

For which of the following processes would the plant best be located close to the source of the major raw material?

Question 42

What is the fourth step in the five-step review technique for waste minimization?

Question 43

What type of information is NOT typically found on an effluent summary worksheet?

Question 44

For processes like chlorine manufacture or aluminum smelting, which utility availability is a critical factor for site selection?

Question 45

What is the purpose of the test known as BOD5 in the context of aqueous waste?

Question 46

Which of the following is NOT one of the listed ancillary buildings and services required on a plant site?

Question 47

In addition to a moral duty, why must companies ensure that legal environmental standards are met?

Question 48

What is the second step in the general procedure for site layout, after siting the process units?

Question 49

What does a 'nonattainment' area classification under the Clean Air Act signify?

Question 50

How can fugitive emissions from packings and seals be reduced according to the text?