Boiler and Cooling Water Quiz

What are the key parameters and indicators of water quality for boiler and cooling systems that are essential for effective operation and maintenance onboard? Give atleast 6

What is the importance of maintaining correct parameters in boiler and cooling water?

What is the pH value range that should be maintained in boiler water to prevent acidic corrosion?

• 10.5 to 11.0

• 5.0 to 9.4

• 7.0 to 8.5

• 0 to 14

What is the minimum concentration of sulfite required in boiler water for the removal of dissolved oxygen?

• 10 PPM

• 20 PPM

• 30 PPM

• 50 PPM

What is the maximum total hardness that should not be exceeded in boiler water?

• 50 PPM

• 100 PPM

• 200 PPM

• 700 PPM

What is the desirable concentration of phosphates in boiler water for complete reaction with calcium hardness?

• 10 – 20 PPM

• 20 – 30 PPM

• 30 – 50 PPM

• 50 – 70 PPM

What is the effect of high boiler alkalinity, which is in excess of 700 PPM?

• Corrosion

• Embrittlement of steel

• Scaling

• Foaming

What is the primary corrosive agent of steam-generating systems?

• Dissolved oxygen

• Oil content

• Hardness

• Alkalinity

What is the significance of chloride ion content in boiler feed water?

• It helps in scaling

• It can cause foaming

• It prevents corrosion

• It increases pH