Which statements regarding daily checking of film washing time are TRUE?

The statement indicating that daily checking of film washing time is tested by visual inspection of the water flow meter with a performance criteria of ± 10% reflects an industry standard for operational practices in radiography. This means that when monitoring the performance of the film washing process, the acceptable deviation from the standard washing time is set at 10%. This level of performance tolerance ensures that while there is some leeway for variability in the washing process, it is still within an acceptable range that does not compromise the quality of the radiographic film.

Maintaining this performance criterion is crucial because improper washing times can lead to residual chemicals on the film, which can affect the quality of the radiographic image. By allowing for a ± 10% variance, operators can ensure that they are accounting for minor fluctuations in the process while still adhering to quality control measures that are essential for accurate results in radiography.

This understanding highlights the importance of regular monitoring and adherence to specified performance criteria as part of the quality assurance practices in radiographic operations.