ASTM E142 PDF

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Designation: E — An American National Standard. Standard Method for. Controlling Quality of Radiographic Testing 1. A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Requirements expressed in this method are intended to control the reliability or quality of the radio- graphic images, and are not intended for controlling the acceptability or quality of materials or products.

It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.

Referenced Documents. Current edition approved May 15, Published July Originally published as E — 59 T. Last previous edition E — Licensed by Information Handling Services. E Terminology for Nondestructive Examinations 3. Direction of Radiation. Placement of Penetrameters. If this is not practicable, placement of the penetrameter on a block is. When weld reinforcement or protruding backing ring is not removed, a shim of the same type of metal as the parent metal shall be placed under the penetrameter to provide the same thickness of material under the penetrameter as the.

Shims shall exceed the penetrameter dimensions such that the outline of at least three sides of the penetrameter image shall be visible on the radiograph and the shimmed penetrameter shall be placed so as not to overlap the backing strip or ring. The series of penetrameters shall range in. If the penetrameter on the source side indicates the required sensi-.

For materials not categorized, the shims or blocks may be made of the penet-. This is to permit equitable evaluation of the penetrameter where diffrac- tion effects may be encountered in the radiography of some cast or weld deposit materials. Number of Penetrameters. Note 2. At least one penetrameter per radiograph, exposed simultaneously with the specimen, shall be used except as.

The radiographic density of the penetrameter shall be measured through the body of the penetrameter. If one penetram-. E Location of Markers. These marker positions shall be marked on the part, and the position of the markers shall be maintained on the part during radiog- raphy. Any or all of the following may appear: the name of the inspecting laboratory, the date, the part number, the view, and whether original or subsequent exposure. Multiple Film Techniques.

Non-Film Techniques. Image Quality. Source-Film Distance. Safety Precautions. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

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astm e142.pdf

This standard covers the radiographic testing of materials for internal discontinuities and also the use of film and other recording media. This method covers the radiographic testing of materials for internal discontinuities, and also the use of film and other recording media. Requirements expressed in this method are intended to control the reliability or quality of the radiographic images, and are not intended for controlling the acceptability or quality of materials or products. The number of areas or parts to be radiographed and the acceptance standard to be applied shall be specified in the contract, purchase order, product specification, or drawings.

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ASTM E142.pdf

Embed Size px x x x x This standard is issued under the fixed designation E ; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon e indicates an editorial change since the last revision or reapproval.

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