Liquid Penetrant Testing Level 1 (PT-1) Practice Exam

Which of the following is NOT a safety precaution for handling penetrant materials?

1. Complete protective clothing must be worn

2. Safety goggles should always be used

3. Air-liner respirators must be used at all times

4. Gloves should be worn to protect the skin

The correct answer is: Air-liner respirators must be used at all times

The use of air-liner respirators at all times is not a standard requirement for handling penetrant materials. While wearing appropriate respiratory protection is crucial in certain situations, it is often dependent on the specific materials being used, the concentration of the chemicals, and the ventilation of the working environment. For many liquid penetrant applications, particularly when working with low toxicity materials, standard laboratory ventilation might suffice, and additional respiratory protection may not be necessary. Proper handling of penetrant materials typically includes the use of complete protective clothing, safety goggles, and gloves to safeguard against skin and eye contact. These precautions are standard practices aimed at minimizing exposure to potentially harmful substances. Therefore, the claim that air-liner respirators must be used at all times exceeds what is generally required for handling liquid penetrants, making it the correct answer.