CMLs should always be:

CMLs should always be:

• A. Measured with a digital UT instrument
• B. Measured by someone certified to ASNT
• C. Permanently marked on a drawing and/or on the vessel
• D. Placed on each nozzle

Answer: (C)

The correct approach regarding CMLs, or Corrosion Monitoring Locations, is that they should be permanently marked on a drawing and/or on the vessel. This ensures that there is a clear and accessible reference for inspection and monitoring purposes. Marking CMLs provides a definitive guideline for inspectors and maintenance personnel to consistently locate and assess those areas over time, allowing for effective monitoring and documentation of corrosion rates or other integrity concerns. Permanent markings help maintain continuity in the inspection process, especially in cases where personnel may change or where there is a need for long-term tracking of vessel condition. Additionally, having these locations documented reduces the chances of oversight during inspections, thereby enhancing the safety and reliability of pressure vessels. Marking CMLs in this manner also facilitates better communication and efficiency among inspection teams and can help to ensure compliance with industry standards and practices, which is vital in maintaining the integrity of pressure vessels.

The correct approach regarding CMLs, or Corrosion Monitoring Locations, is that they should be permanently marked on a drawing and/or on the vessel. This ensures that there is a clear and accessible reference for inspection and monitoring purposes. Marking CMLs provides a definitive guideline for inspectors and maintenance personnel to consistently locate and assess those areas over time, allowing for effective monitoring and documentation of corrosion rates or other integrity concerns.

Permanent markings help maintain continuity in the inspection process, especially in cases where personnel may change or where there is a need for long-term tracking of vessel condition. Additionally, having these locations documented reduces the chances of oversight during inspections, thereby enhancing the safety and reliability of pressure vessels.

Marking CMLs in this manner also facilitates better communication and efficiency among inspection teams and can help to ensure compliance with industry standards and practices, which is vital in maintaining the integrity of pressure vessels.