Question

What are the Out of service criteria for Drum Linings?

1) Thickness less than 2 mm
2) Cracks or splits
3) Blistering or bubbling
4) All of the above

Answer 1

The out of service criteria for drum linings include thickness less than 2 mm, cracks or splits, and blistering or bubbling.

Step-by-step explanation:

The out of service criteria for drum linings include several factors:

1. Thickness less than 2 mm: Drum linings should have a minimum thickness of 2 mm to ensure proper protection and durability.
2. Cracks or splits: Any visible cracks or splits in the lining can indicate weakening or damage, which can compromise the effectiveness of the lining.
3. Blistering or bubbling: The presence of blisters or bubbles on the lining surface can suggest delamination, which means the lining is separating from the drum and can no longer provide adequate protection.

Therefore, the correct answer is All of the above.