Which of the following are not allowed when performing thickness testing on TFIFRM?

In the context of thickness testing on thermal insulation fire-resistive material (TFIFRM), certain practices are not permitted to ensure accurate and reliable results. Choosing an option that indicates "all of the above" signifies an understanding that all listed practices compromise either the integrity of the testing process or the results.

Conducting partial tests can lead to incomplete data, rendering the overall assessment of the fireproofing material inadequate. It is crucial to perform comprehensive tests to confirm that the entire surface is within the specified thickness requirements, rather than relying on potentially misleading partial measurements.

Testing in high humidity situations can negatively affect the measurement accuracy and the condition of the TFIFRM. Moisture can interfere with adhesion and performance, which may lead to erroneous thickness readings or misinterpretation of the material's effectiveness.

Using damaged equipment poses a significant risk of providing inaccurate readings. If the testing tools are not functioning correctly or are compromised in any way, the results will not reflect the true state of the TFIFRM, possibly leading to impaired safety assessments.

Recognizing that all these practices are disallowed in the process ensures that only reliable and comprehensive assessments of fireproofing thickness are conducted, thereby upholding safety standards and regulatory compliance.