att vt-1.0a rev. 2 procedure

Attest Inspection, LLC 11515 Carson Avenue, Pearland, Texas 77584

www.attestservices.com

Office: (713) 568-2703 Fax: (832) 201-9105

ASME Weld Examination Procedure

Visual Testing

Table of Contents Section Page No.

1.0 Purpose and Scope ..................................................... 2 2.0 References ................................................................... 2 3.0 Personnel Qualifications ............................................. 2 4.0 Equipment ................................................................... 3 5.0 Examination Procedure ............................................... 3 7.0 Acceptance Standards ................................................ 4 6.0 Documentation ............................................................ 4 Report of Examination .............................................. 6



Office: (713) 568-2703 Fax: (832) 201-9105

1.0 PURPOSE AND SCOPE

1.1 Details the standard technique for the visual examination and evaluation of welds. This procedure will be followed by Attest Inspection LLC (ATT) when visual weld examination is performed in accordance with ASME for the detection of root (when accessible), face, and adjacent base metal anomalies caused by the welding process.

1.2 This procedure is not intended to cover the visual examination

involved in interpretation of other nondestructive examination methods such as radiography, ultrasonic, magnetic particle, liquid penetrant, hydrostatic testing, leak testing, or eddy current.

1.3 This procedure will be used in conjunction with applicable client

specifications.

2.0 REFERENCES

2.1 ASME Section V, Article 9, “Visual Examination”, latest edition. 2.2 ATT NDE-QC-1 “Qualification and Certification Procedure for

Nondestructive Examination Personnel”.

3.0 PERSONNEL QUALIFICATIONS 3.1 Personnel performing visual examination (VT) of welds in

accordance with this procedure shall be certified to at least Level I (VT) in accordance with procedure ATT NDE-QC-1, “Qualification and Certification of Nondestructive Testing Personnel.”

3.2 Certified VT Level I, II and III personnel may perform all operations necessary in accordance with this procedure to process the object being examined. Level I personnel shall receive the necessary supervision and guidance from certified VT level II or Level III personnel.

3.3 Interpretation and evaluation of visual testing results shall be



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accomplished by personnel certified as VT Level II or Level III. 4.0 EQUIPMENT

4.1 When performing visual weld inspection the following equipment

shall be available to accomplish the examination. 4.1.1 Tape measure 25', 1/32” graduation recommended. 4.1.2 6" steel ruler, 1/64" graduation recommended 4.1.3 Fillet weld gauge 4.1.4 Crown gauge 4.1.5 Flashlight 4.1.6 10X Magnifier 4.1.7 Hi/Lo Gauge 4.1.8 Paint stick or other suitable marker 4.1.9 Inspection Mirror 4.1.10 Dial Caliper, 0 to 6” (minimum) 4.1.11 Outside Micrometer 0 to 1” (minimum) 4.1.12 Pit Gage 0 to .5” (minimum) 4.1.13 Digital/Antilog gage with Amperage Clamp, Thermocouple

Probe, and Surface Temperature Probe or equivalent. 4.1.14 18% neutral gray resolution card.

5.0 EXAMINATION PROCEDURE

5.1 Lighting requirements shall be as follows: 5.1.1 For general examination a minimum of 50 foot candles of light. 5.1.2 For the detection or study of small anomalies a minimum of

100 foot candles of light. 5.1.3 A standard two (2) cell flashlight will produce 50 foot candles

of light at approximately 9" when fully charged. 5.1.4 For direct general visual examinations, resolution and lighting

shall be considered sufficient when a black line 1/32” wide on a 18% neutral gray card can be resolved under the worst conditions of lighting, angles or positions of the inspection to be encountered.

5.2 Direct visual examination shall be used and may usually be made

when access is sufficient to place the eye within 24" of the surface to be examined and at an angle no less then 30 degrees to the surface.



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5.2.1 Mirrors and magnifiers may be used to assist in the examination when necessary.

5.3 Visual examination may begin immediately after completed welds

have cooled except visual examination of welds in ASTM A514 and A517 steels shall be performed no less than 48 hours after completion. 5.3.1 Weld surfaces shall be free of spatter, slag, scale, oil, and

grease. Minor slag may be removed during the examination. 6.0 ACCEPTANCE STANDARDS

6.1 The acceptance standards and flaw sizing criteria will be as stated in the referencing code. 6.1.1 The edition of the code used for acceptance will be the latest

issue in effect at the time of evaluation of the visual examination results or the edition specified by the customer.

6.2 When performing visual examination evaluations, the VT level II or III

will have available for reference during evaluation a copy of the acceptance standards and flaw sizing criteria from the referencing code.

7.0 DOCUMENTATION

7.1 Unless otherwise directed, mark all noted conditions clearly on the

weld and adjacent base metal. 7.2 Records of visual examinations shall be submitted in accordance

with the requirements of the applicable project specification, work order instruction or other special requirements, including but not limited to: 7.2.1 Joint preparation and cleanliness 7.2.1 Welder, Brazier, and operator qualifications to the applicable

joining procedure (prior to application of the joining procedure).

7.2.2 Preheat 7.2.3 Fit-up, joint clearance, and internal alignment prior to joining 7.2.4 Variables specified by the joining procedure, including filler

material; and



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7.2.4.1 (for welding) position and electrode; 7.2.4.2 (for brazing) position, flux, brazing temperature, proper

wetting, and capillary action. 7.2.5 (for welding) condition of the root pass after cleaning -

external and, where accessible, internal 7.2.6 (for welding) slag removal and weld condition between

passes; and 7.2.7 appearance of the finished weld.

7.3 As a minimum the Visual Weld Examination Report shall contain the following information: 7.3.1 Customer name and address 7.3.2 Date 7.3.3 Job, project or purchase order number 7.3.4 Surface condition 7.3.5 Examination standard used 7.3.6 Acceptance standard used 7.3.7 Reference to this procedure 7.3.8 Resolution check performed for examination and method used 7.3.9 Part, piece, or serial number of the item being examined 7.3.10 Disposition/results of the examination 7.3.11 Inspectors name, signature, and certification level

att vt-1.0a rev. 2 procedure

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