CPR Infrared Thermography 5

Question 1

A thermographer notices that a section of ceiling appears warm in an IR image during a heating season scan. The FIRST conclusion to investigate is:

Accepted Answer

All of the above require field verification

Answer

A warm ceiling anomaly in heating season can result from warm plumbing leaks, insulation voids, or HVAC ductwork — all must be investigated and confirmed before drawing conclusions.

Question 2

Which condition MOST increases the risk of a false positive moisture reading when using an IR camera on exterior stucco walls?

Accepted Answer

Scanning after a rainstorm before the surface has dried

Answer

Scanning stucco shortly after rain creates surface evaporation patterns that mimic subsurface moisture intrusion, producing false positives until the surface dries.

Question 3

In drying validation using IR thermography, a technician should compare readings to which baseline?

Accepted Answer

Pre-loss moisture meter readings and initial IR scans taken at job start

Answer

Comparing current IR scans to the initial post-loss scans establishes a measurable baseline to document drying progress and confirm that moisture anomalies have been resolved.

Question 4

What is the purpose of applying high-emissivity tape to a low-emissivity surface before taking an IR temperature reading?

Accepted Answer

To create a known-emissivity reference point for accurate temperature measurement

Answer

High-emissivity tape (e.g., black electrical tape, emissivity ≈0.95) provides a reference surface with known emissivity, enabling accurate temperature readings on otherwise problematic low-emissivity materials.

Question 5

When using IR thermography to locate hidden pipe leaks in a slab, the technician should look for:

Accepted Answer

A radial thermal pattern emanating from a point source on the floor

Answer

Active pipe leaks beneath slabs often produce a radial or branching warm (or cool, depending on water temperature vs. slab) pattern spreading outward from the source.

(CPR) Certified Professional Restorer Practice Test

(CPR) Certified Professional Restorer Practice Test

CPR Infrared Thermography 5