T9074-AS-GIB-010/271 Rev 1
8.6 INSPECTION TECHNIQUES. Direct viewing (unaided or magnifying glass) shall be used whenever possible. When a remote visual inspection device such as a borescope or video probe is employed for visual inspection, evaluation and acceptance of detected discontinuities shall be based upon comparison against a standard containing a similar defect condition viewed in the same manner and at the same magnification. When magnification is used as an aid to better evaluate conditions detected by direct visual inspection, including 5X, comparison standards are not required. When remote inspection equipment is used for 5X inspections, the equipment shall be verified to provide a minimum of 5X magnification with the proper stand-off distance by direct measurement on screen or by manufacturer ’ s data for the specific equipment used. 8.7 DIMENSIONAL INSPECTION ACCURACY. Each activity shall ensure that the dimensional inspection techniques, including measuring devices, visual aids, and reference standards, are capable of measuring the specified dimensions of the items under inspection, with the required precision.
8.8 LIGHTING. The inspection area shall be adequately illuminated for proper evaluation.
8-2
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