9: Non-destructive Examination
API ICP Self Study Materials
API ICP Self Study Materials
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Keywords:<br />
• eye within 6 in. – 24 in. (150 mm – 600 mm)<br />
• angle not less than 30 degrees<br />
• Visual aid instruments have a resolution at least equivalent to that which is<br />
attained by direct visual examination.<br />
• the illumination should be sufficient to allow resolution of fine detail.<br />
• These illumination requirements are to be addressed in a written<br />
procedure.<br />
Hint: No specific requirement on the amount of illuminances in Lux/ Foot<br />
Candle.