GOST R 50.05.07-2018 PDF

Full title and description

GOST R 50.05.07-2018 — Conformity assessment system for the use of nuclear energy. Conformity assessment in the form of examination. Unified procedures. Radiographic examination. The standard establishes unified procedures and requirements for performing radiographic (X‑ray, gamma and hard bremsstrahlung) non‑destructive examination (radiographic testing) with fixation of the transformed radiation image on radiographic film, including requirements for equipment, test media and reference specimens, personnel qualification, processing and presentation of results, metrological support and radiation safety for application in nuclear power plant equipment and pipelines.

Abstract

This national standard provides detailed, unified methodological rules for radiographic non‑destructive testing (RT) used within the conformity assessment system for the use of atomic energy. It covers selection and use of sources (X‑ray, gamma, hard bremsstrahlung), film and cassette arrangements, sensitivity verification using reference samples/indicators, exposure schemes for common welded and clad components, image processing and interpretation, documentation of findings, metrological traceability of measurements and mandatory radiation protection measures specific to nuclear energy facilities.

General information

• Status: Active — introduced for the first time (effective national standard).
• Publication date: March 1, 2018 (approved by Rosstandart on February 2, 2018).
• Publisher: Federal Agency on Technical Regulation and Metrology (Rosstandart). English/translation editions are distributed commercially by technical publishers (e.g., Interstandard).
• ICS / categories: 27.120 (Nuclear power engineering); non‑destructive testing; radiographic examination.
• Edition / version: 2018 — first edition.
• Number of pages: 36.

Scope

The standard applies to radiographic examination of welded joints and overlaid (clad) surfaces of equipment and pipelines of nuclear power installations and other NPP elements manufactured and operated in accordance with federal regulations for atomic energy use. It specifies procedural and technical requirements for performing radiographic inspections during manufacture, installation and operation where conformity assessment in the form of examination is required.

Key topics and requirements

• Approved radiographic methods and radiation sources: X‑ray, gamma and hard bremsstrahlung.
• Sensitivity verification: use and placement of image quality indicators (IQIs) / reference specimens and calibration samples.
• Exposure schemes and geometric arrangements for straight, circumferential and complex welds and for pipework of varying diameters.
• Film handling, development, optical density limits and image processing/archiving procedures.
• Acceptance/interpretation rules for common defect types in welds and clad layers.
• Personnel qualification and responsibilities for radiographers, interpreters and supervising specialists.
• Metrological support and traceability of measurement results.
• Radiation protection and safety requirements specific to NPP environments.
• Documentation, reporting formats and record retention for conformity assessment purposes.

Typical use and users

Used by radiographic testing units in nuclear power plant construction and operation, manufacturers of NPP equipment, suppliers of welded components and claddings, accredited conformity assessment bodies, independent inspection organizations, method developers and regulatory compliance teams. It is primarily a technical/procedural reference for NDT engineers, radiographers, QA/QC specialists and metrology officers working in the nuclear energy sector.

Related standards

Commonly used alongside and referenced with other national standards and regulatory documents, for example: GOST R 50.05.15-2018 (terms and definitions for conformity assessment in atomic energy), GOST R 50.05.20-2019 (monitoring and operational NDT planning), GOST R 55776-2013 (radiation NDT terms), relevant GOST and PNAE documents on welding and NDT (e.g., PNAE G-7 series), and Rosstandart orders that approve conformity assessment procedures for atomic energy.

Keywords

radiographic examination; radiography; non‑destructive testing (NDT); X‑ray; gamma; bremsstrahlung; welded joints; cladding; image quality indicator (IQI); sensitivity; nuclear power plant; conformity assessment; Rosstandart; metrological support; radiation safety.

FAQ

Q: What is this standard?

A: GOST R 50.05.07-2018 is a Russian national standard that sets unified procedures and requirements for radiographic (film‑based) non‑destructive examination used within the conformity assessment system for the use of nuclear energy.

Q: What does it cover?

A: It covers radiographic methods using X‑rays, gamma and hard bremsstrahlung, placement and use of image quality indicators and reference specimens, exposure geometries for welds and claddings, film processing and interpretation, metrological support, personnel qualifications and radiation protection measures for NPP‑related inspections.

Q: Who typically uses it?

A: NDT and radiography personnel, QA/QC engineers, equipment manufacturers and suppliers to nuclear plants, accredited inspection and conformity assessment bodies, and regulatory/compliance teams within the nuclear industry.

Q: Is it current or superseded?

A: As published in 2018, this edition was introduced for the first time and marked active. Users should verify on the national standards registry or with Rosstandart for any amendments or later superseding documents before applying it to critical work.

Q: Is it part of a series?

A: Yes — it is part of the GOST R 50.05 series covering the conformity assessment system for the use of nuclear energy (conformity assessment in the form of examination) and is intended to be used together with related unified procedures and terminology documents in that series.

Q: What are the key keywords?

A: Radiographic examination; radiography; NDT; X‑ray; gamma; bremsstrahlung; welded joints; image quality indicator; sensitivity; nuclear power; conformity assessment; Rosstandart.