Serial numbers of light meters, boroscopes, or visual gauges utilized.
The eye must be within 24 inches (600 mm) of the surface being examined.
• Change in the type of visual aids used.• Change in the surface preparation method.• Decrease in the minimum light intensity.• Change in the remote visual equipment model. asme section v article 9
Unlike other NDE methods that rely on advanced technology, VT is a method that can be performed by a trained inspector using eyesight, either directly or with the aid of simple tools, to assess surface conditions. Despite its simplicity, VT is strictly governed by detailed rules regarding lighting, access, surface preparation, and inspector qualifications to ensure consistency and reliability.
is dedicated to Nondestructive Examination (NDE) procedures, and Article 9 focuses specifically on Visual Examination (VT) . It is a "reference code," meaning it does not determine when a visual inspection is required, but rather how it must be performed once required by a construction code (like ASME Section III or VIII) or a repair code (like NBIC). Scope and Purpose Serial numbers of light meters, boroscopes, or visual
One of the most notable additions to Article 9 in recent editions is the explicit definition of surface preparation requirements under paragraph T-940. The surface and adjacent areas within at least of the examination area must be clean, dry, and free from dirt, grease, welding spatter, flux, oil, or any other contamination that could affect the inspection results. Although surface preparation was previously included in Table T-921, its purpose and specific cleaning requirements are now clearly defined and have become mandatory. This change brings surface preparation requirements for visual examination more in line with those of other surface NDE methods such as liquid penetrant testing, ensuring more accurate and reliable inspection reports.
The surface must be illuminated with a minimum of 100 foot-candles (1000 lux). E. Remote Visual Examination Unlike other NDE methods that rely on advanced
Upon completion, a report is required. Article 9 specifies minimum data points for the report:
Detecting surface cracks, porosity, lack of fusion, and improper geometry. Component Integrity:
