Chapter 22 - Maintenance Coating Operations

Question 1

How can the life cycle of a coating system be affected?

Answer 1

The steel in question
Costs
The service atmosphere 
Product
Maintenance

Question 2

When determining the coating system life cycle, what should be considered?

Answer 2

The particular coating system to be used
The initial cost
Time until first maintenance coating will be applied
Maintenance cost during the life of the coating system
The length of time the product will last
The maintenance cost per year
The cost over the life of the system

Question 3

What should be taken into consideration, in relation to maintenance coating selection process?

Answer 3

Compatible with the existing coating system
Condition of existing coating
Limitation on surface preparation
Manufacturers recommendation

Question 4

With regards to maintenance coatings all parties should agree on?

Answer 4

Spot repair requirements
Feathering
Appearance of repaired areas

Question 5

What is feathering?

Answer 5

Is performed at the repaired area by working the edges of the repaired area back, to achieve a fairly smooth transition from the repair area to the sound coating.

Question 6

What may happen if a maintenance coating is applied to an incompatible existing coating system?

Answer 6

Curling may happen

Question 7

What is included in some service situations In which permeation may occur?

Answer 7

Sour crude storage tanks
Cooling towers
Fertilizer plants

Question 8

What is the definition of maintenance coating operations?

Answer 8

Applying coating over a substrate that has been installed in its final environment and has been placed in service.