Performance of composite intensifying screens for radiography in the nuclear field
S>A performance evaluation indicated that a composite intensifying screen for radiography can achieve significant economics by reducing the exposure time of kilovoltage needed. For many applications, the radiographic quality can match code requirements. The resolution capability was determined by penetrameter sensitivity, as described in ASTM E 142-68, Standard Method for Controlling Quality of Radiographic Testing.'' This standard is cited in important American codes for the nuclear field such as ASME Boiler and Pressure Vessel Codes Section III; Nuclear Power Plant Components and RDT F3-6T, Non- destructive Testing (US-AEC, Division of Reactor Development and Technology). The evaluation was conducted using stainless steel samples that spanned a thickness range from 1/2 to 5 inches. Radiation quality covered a range from 200 kV x-ray to approximately 1.25 MeV (industrial isotope /sup 60/Co) investigated in conjunction with four types of widely used American industrial radiographic film. The composite screens designed for high speed'' exhibited resolving capability nearly equal to conventional lead foil intensifying screens when examining steel 5/8 inch or thicker. In this range, they achieved radiographic quality of 2-2T or better, as described in ASTM E 142-68. (auth)
- Research Organization:
- Hanford Engineering Development Lab., Richland, Wash. (USA)
- DOE Contract Number:
- AT(45-1)-2170
- NSA Number:
- NSA-29-002605
- OSTI ID:
- 4407749
- Report Number(s):
- HEDL-TME-73-71
- Resource Relation:
- Other Information: Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- United States
- Language:
- English
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