CONSULTATION ON VALIDATION AND APPROVAL OF VIBRATION PROCEDURES

Messrs. Forum, good morning, I will appreciate absolving the following query regarding the Vibration Procedures:

"According to the Recommended Practice SNT-TC-1A of the ASNT (American Society for Non-Destructive Testing), a qualified personnel in Level III is who develops, qualifies and approves Procedures, now in the case of the ISO, who is the qualified personnel to develop, qualify and approve Procedures: a Category III or IV ?.

Best regards and many successes.

Original Post

The Category III is the senior vibration analyst (mostly for balance-of-plant machines) and he/she is the program leader. He/she should oversee the setup and execution of the program. He/she should review recommendations. He/she should ensure the rest of the team are adequately trained/certified/qualified to perform their roles.  The buck should stop with the Category III engineer. Every program should have a Category III "analyst/manager".

The Category IV is more of a highly skilled analyst/problem solver. The Category IV should be highly skilled in a broader range of topics, especially rotor dynamics and working with flexible rotor and fluid film bearing machines.

I hope that helps. (I am on TC 108/SC 5 - the ISO committee that defines the ISO 18436 and other CM standards.)

Jason Tranter posted:

The Category III is the senior vibration analyst (mostly for balance-of-plant machines) and he/she is the program leader. He/she should oversee the setup and execution of the program. He/she should review recommendations. He/she should ensure the rest of the team are adequately trained/certified/qualified to perform their roles.  The buck should stop with the Category III engineer. Every program should have a Category III "analyst/manager".

The Category IV is more of a highly skilled analyst/problem solver. The Category IV should be highly skilled in a broader range of topics, especially rotor dynamics and working with flexible rotor and fluid film bearing machines.

I hope that helps. (I am on TC 108/SC 5 - the ISO committee that defines the ISO 18436 and other CM standards.)

Mr. Jason:

Good afternoon, then a Category III Vibration Analyst can you write procedures and / or approve them? or do the procedures have to be approved by the Category IV Vibration Analyst?.

I will appreciate your comments on this. Best regards.

The standard is not that specific. But the role of all Category III analysts across all the condition monitoring technologies per the 18436-X standards is basically the same - they are the leaders/managers of the team. It is only vibration analysis 18436-2 that has a Category IV, and that is for the specialist knowledge. I would suggest that it is up to your organization to define the roles and responsibilities. The Category III should be qualified to perform that role.

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