CWB Welding Inspector Level 2 Exam (Latest 2024 / 2025 Update) Questions & Verified Answers | 100% Correct | Grade A
Question:
Define Erosion-Corrosion?
Answer:
description of the damage that occurs when corrosion contributes to erosion by removing protective films or scales, or by exposing the metal surface to further corrosion under the combined action of erosion and corrosion.
Question:
What kind of units/equipment are affected by Erosion, Erosion-Corrosion?
Answer:
All types of equipment tat are exposed to moving fluid and/or catalyst are subject to erosion, erosion-corrosion.
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Question:
What is the appearance of damage for Erosion, Erosion-Corrosion?
Answer:
Localized loss in thickness in the form of pits, grooves, gullies, waves, rounded holes or valleys. These often exhibit a directional pattern.
Question:
What are some ways of prevention/Mitigation for Erosion, Corrosion- Erosion?
Answer:
-Improvement in design. Involving *shape, geometry, material selection -Improvement of resistance achieved through increasing substrate hardness using harder alloys, hard-facing or surface-hardening treatments.-Heat ex changers utilize impingement plates and occasionally tube ferrules to minimize erosion
Question:
What is used to detect refractory loss on stream when erosion is suspected?
Answer:
IR scan
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Question:
What are 3 ways to inspect an area of erosion
Answer:
Visual UT checks RT to check extent of metal loss
Question:
What is the description of Mechanical Fatigue?
Answer:
Mechanical fatigue is a form of degradation that occurs when a component is exposed to cyclical stresses for an extended period, often resulting in sudden unexpected failure.
Question:
What type of material is subject to Mechanical fatigue?
Answer:
All engineering alloys are subject to fatigue cracking
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