Standard Practice for Radioscopy

Importancia y uso:

5.1 As with conventional radiography, radioscopic examination is broadly applicable to any material or examination object through which a beam of penetrating radiation may be passed and detected including metals, plastics, ceramics, composites, and other nonmetallic materials. In addition to the benefits normally associated with radiography, radioscopic examination may be either a dynamic, filmless technique allowing the examination part to be manipulated and imaging parameters optimized while the object is undergoing examination, or a static, filmless technique wherein the examination part is stationary with respect to the X-ray beam. Systems with digital detector arrays (DDAs) or an analog component such as an electro-optic device or an analog camera may be used in dynamic mode. If achievable video rates are not adequate to examine features of interest in dynamic mode then averaging techniques with no movement of the test object shall be used – in this case, if using a DDA, Practice E2698 shall be used. If used with a high speed camera system, the user must be aware of the various image conversion materials decay time such that the converter signal can change as fast or faster than the frame rate. Linear Detector Arrays (LDAs) and flying spot systems may be considered radioscopic configurations as they are included in as shown in Guide E1000.

5.2 This practice establishes the basic parameters for the application and control of the radioscopic examination method. This practice is written so it can be specified on the engineering drawing, specification, or contract.

5.3 Weld Examination—Additional information on radioscopic weld examination may be found in Practice E1416.

5.4 Casting Examination—Additional information on radioscopic casting examination may be found in Practice E1734.

5.5 Electronic Components—Radioscopic examination of electronic components shall comply with Practice E1161.

5.6 Explosives and Propellants—Radioscopic examination of explosives/propellant components shall comply with Practice E1742 Annex A3.

5.7 Part-Specific Examination Technique—A detailed written procedure including a part-specific examination technique shall be prepared for each part, or group of parts, and shall be approved by the Cognizant Radiographic Level 3.

5.8 Personnel Qualification—Personnel performing radioscopic examinations and interpretations to this practice shall be qualified in accordance with a nationally or internationally recognized NDT personnel qualification practice or standard and certified by the employer or certifying agency as applicable. Other equivalent qualification documents may be used when specified on the contract or purchase order. The applicable revision shall be the latest unless otherwise specified in the contractual agreement between parties.

5.9 Agency Evaluation—If specified in the contractual agreement, the NDT supplier shall be qualified and evaluated in accordance with Practice E543. The applicable revision of Practice E543 shall be specified in the contractual agreement.

Subcomité:

E07.01

Referida por:

E1161-21, E1734-23, E2903-18, E2662-15R22, E1416-23, E1453-20, E1647-16R22, E1742_E1742M-23, E1165-20, E0431-96R22, E0543-21, E1931-16R22, E2533-21, E3166-20E01, E1255-23, E1411-23, E1475-13R23, E0543-21, E2982-21

Volúmen:

03.03

Número ICS:

77.040.20 (Non-destructive testing of metals)

Palabras clave:

analog; detector; digital; display; examination; image; manipulator; processor; radioscopy; source;