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BS 7257:1989 - Methods for radiographic examination of fusion welded branch and nozzle joints in steel

Description Printed version of this is available at library. To request, please e-mail to referencepk@usm.my and include a copy of this record in your e-mail. Abstract BS 7257:1989 provides standardized methods for the radiographic examination of fusion welded branch and nozzle joints in steel components, with the aim of detecting internal discontinuities such as cracks, porosity, lack of fusion, and inclusions. Key points covered in the scope include: Selection of radiographic techniques appropriate for complex geometries like branch and nozzle joints Types of radiation sources (e.g. X-ray or gamma ray) and recommended exposure parameters Film types, screens, and image quality indicators (IQIs) to be used Positioning of the radiation source and film to maximize defect detection Techniques for minimizing distortion and superimposition of joint features Criteria for radiographic sensitivity and image quality Interpretation and evaluation of radiographs in accordance with applicable acceptance standards

Contributor(s): NAAR - Data Entry Person Primary Item Type: British Standard Identifiers: ISBN 058017963X ICS 25.160.40 Welded joints and welds Language: English Subject Keywords: Steels; Radiation protection; Gamma-ray apparatus; Thickness; Test equipment; Identification methods; Pipe junctions; Radiographic testing; X-ray apparatus; Pipe fittings; Flow nozzles First presented to the public: 6/23/2025 Original Publication Date: 12/31/1989 Previously Published By: British Standards Institution Place Of Publication: London, United Kingdom Citation: Extents: Number of Pages - 28 License Grantor / Date Granted:   / ( View License ) Date Deposited 2022-06-06 11:27:29.197 Submitter: Nurul Aini Abdul Rahman

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