Podcast
Questions and Answers
What is the primary cause of delignification in the wood?
What is the primary cause of delignification in the wood?
- Fungal attack
- Excessive water flow
- Oxidizing agents and alkaline materials (correct)
- Mechanical wear and tear
What is the effect of delignification on the appearance of the wood?
What is the effect of delignification on the appearance of the wood?
- The wood becomes smoother and more uniform
- The wood looks white or bleached and the surface becomes rougher (correct)
- The wood becomes discolored and darker
- The wood remains unchanged in appearance
Which of the following is a key condition that leads to severe deterioration of the wood due to delignification?
Which of the following is a key condition that leads to severe deterioration of the wood due to delignification?
- High pH and high chlorine residual (correct)
- High pH and low chlorine residual
- Low pH and low chlorine residual
- Low pH and high chlorine residual
Which type of corrosion is characterized by cracking of metal under tensile stress in a corrosive environment?
Which type of corrosion is characterized by cracking of metal under tensile stress in a corrosive environment?
How do microorganisms contribute to corrosion in the cooling system?
How do microorganisms contribute to corrosion in the cooling system?
What is the primary difference between crevice corrosion and pitting corrosion?
What is the primary difference between crevice corrosion and pitting corrosion?
What type of cooling water system is characterized by the water being recirculated in a closed loop?
What type of cooling water system is characterized by the water being recirculated in a closed loop?
Which oxidizing agent is commonly added to cooling water systems to control microbiological activity?
Which oxidizing agent is commonly added to cooling water systems to control microbiological activity?
In an open recirculating system, what is used to cool the water and reduce the need for water makeup?
In an open recirculating system, what is used to cool the water and reduce the need for water makeup?
Why is chemical treatment economical in closed recirculating systems?
Why is chemical treatment economical in closed recirculating systems?
What is a common use of closed recirculating systems?
What is a common use of closed recirculating systems?
How does an open recirculating system handle the remaining water that becomes concentrated with minerals?
How does an open recirculating system handle the remaining water that becomes concentrated with minerals?
