Red Seal Gasfitter — Class A Practice Exam

How should corrosion be treated on existing gas piping?

1. Remove corroded areas and replace with new piping or fitting

2. Paint over the corroded areas to prevent further corrosion

3. Ignore the corrosion if it is not affecting performance

4. Cover the corroded areas with insulation

The correct answer is: Remove corroded areas and replace with new piping or fitting

Treating corrosion on existing gas piping is critical for maintaining the integrity and safety of the system. The most effective method is to remove corroded areas and replace them with new piping or fittings. This approach ensures that the structural integrity of the gas piping system is restored, eliminating the risk of leaks or failures that can arise from weakened or compromised materials. Corrosion can progress over time and may not be immediately visible, so it is important to replace any corroded sections to prevent future issues. In addition, simply painting over the corroded areas or applying insulation does not address the underlying problem; these methods may temporarily mask the issue but do not eliminate the corrosion itself. Ignoring corrosion can be dangerous, as it may lead to serious failures in the gas system, potentially resulting in hazardous situations. Thus, the recommended practice of replacing corroded areas ensures both safety and compliance with relevant regulations and standards.