Building CPD – Corrosion protection quiz

Please answer the following 5 multiple choice questions, then click 'submit' to check the result. The pass mark for a CPD certificate is 5 out of 5, and you may retake the quiz as many times as you wish. Please note that one, two, three or all of the possible answers presented for each question may be right, and to gain a mark for that question all correct answers must be identified.

Good luck

Building CPD - Corrosion protection

What is the most important method used for the thorough cleaning of millscaled and rusted surfaces?

Soft blast cleaning
Cold blast cleaning
Abrasive blast cleaning
Hot dip galvanizing
Sanding down

What are the standard grades of cleanliness for abrasive blast cleaning in accordance with ISO 8501-1?

Sa 1 - light blast cleaning
Sa 2 - thorough blast cleaning
Sa 2½ - very thorough blast cleaning
Sa 3 - blast cleaning to visually clean steel
All of the above

In the hot dip galvanizing process, how hot does the molten zinc need to be?

250°C
350°C
450°C
550°C
650°C

Which of these are standard methods used to apply paints to structural steelwork?

Brush
Roller
Conventional air spray
Airless spray / electrostatic airless spray
All of the above

What is one of the greatest assets to the coating inspector?

A clearly written specification
Functioning equipment
Proper protection on-site
Access to a factory’s health and safety record
Employer consent