GOST R 50.05.05-2018 PDF

Full title and description

GOST R 50.05.05-2018 — System of conformity assessment for the use of nuclear energy. Conformity assessment in the form of examination. Unified procedures. Ultrasonic examination of base materials (semi‑products). The standard establishes unified procedures for ultrasonic non‑destructive testing (NDT) of base materials (semi‑finished products) used in manufacture of equipment, pipelines and other components for nuclear power installations.

Abstract

This national standard specifies the scope, requirements and methods for ultrasonic examination of base materials (forgings, long products, castings, sheets, pipes and stamped blanks) intended for equipment and piping of nuclear power plants. It sets out requirements for test objects, inspection equipment, personnel qualification, inspection procedures, signal interpretation, defect sizing and classification, documentation and safety measures applicable to conformity assessment by examination in the nuclear sector.

General information

• Status: In force (active).
• Publication date: Approved 27 February 2018; in force from 1 March 2018.
• Publisher: Approved by the Federal Agency for Technical Regulation and Metrology (Rosstandart); developed by the State Corporation Rosatom; published editions distributed by Standardinform / national standards publishers.
• ICS / categories: ICS (OKС) 27.120 — Power and heat engineering; nuclear power installations and components; non‑destructive testing.
• Edition / version: 2018 (current edition, introduced 2018).
• Number of pages: 32 pages.

Scope

The standard applies to ultrasonic examination of base materials (semi‑products) used in the manufacture of nuclear power plant equipment and pipelines. It covers forgings, long products (bars, rods), castings, plates, pipes and stamped blanks. The scope includes procedural requirements for preparing and performing ultrasonic inspections, selection and calibration of instruments and transducers, scanning techniques, acceptance criteria, record keeping and safety precautions required for conformity assessment in the nuclear field.

Key topics and requirements

• Definitions and terminology for ultrasonic NDT in the context of nuclear energy.
• Requirements for objects of inspection (geometry, dimensions, preparation and surface condition).
• Technical requirements for ultrasonic equipment, transducers, calibration blocks and ancillary tools.
• Personnel qualification and competence requirements for examiners performing ultrasonic control.
• Detailed inspection procedures: scanning techniques, probing directions, angles, and sensitivity settings.
• Procedures for calibration, reference standards, and verification of instrument performance.
• Criteria for detection, evaluation, sizing and classification of discontinuities and defects.
• Processing, analysis and documentation of inspection results, including reporting formats.
• Safety and radiation/nuclear‑specific precautions applicable during inspections in nuclear facilities.
• Normative references and cross‑references to related regulatory and technical documents.

Typical use and users

Used by ultrasonic NDT personnel, qualification and certification bodies, testing laboratories, manufacturers of pressure equipment and piping for nuclear power plants, conformity assessment and inspection organizations, designers and quality assurance engineers in the nuclear industry, and regulatory authorities overseeing component acceptance and in‑service inspection programs.

Related standards

Part of the GOST R conformity assessment series for nuclear energy. Closely related documents include other unified procedure standards in the 50.05 series (for example, standards covering ultrasonic inspection of welded joints and claddings, magnetic particle inspection, penetrant inspection and related methods), national normative references such as GOST 23829 (NDT terminology) and sector guidance and regulatory documents used in the Russian nuclear sector.

Keywords

Ultrasonic examination; ultrasonic testing (UT); non‑destructive testing (NDT); base materials; semi‑products; forgings; castings; pipes; nuclear energy; conformity assessment; inspection procedures; personnel qualification; Rosatom; Rosstandart.

FAQ

Q: What is this standard?

A: GOST R 50.05.05-2018 is a Russian national standard defining unified procedures for ultrasonic non‑destructive examination of base materials (semi‑finished products) within the conformity assessment system for the use of nuclear energy.

Q: What does it cover?

A: It covers scope, methods and requirements for ultrasonic inspection of forgings, long products, castings, plates, pipes and stamped blanks used in nuclear power plant equipment and piping — including equipment requirements, calibration, inspection technique, defect evaluation, documentation and safety measures.

Q: Who typically uses it?

A: NDT inspectors and technicians, testing laboratories, manufacturers and quality engineers working on nuclear‑grade components, certification and conformity assessment bodies, and regulators involved in acceptance and in‑service inspection activities.

Q: Is it current or superseded?

A: The 2018 edition was approved 27 February 2018 and came into force 1 March 2018. It is listed as an active (in‑force) standard; users should check national catalogues or regulatory lists for any amendments or later replacements before applying it in a specific project.

Q: Is it part of a series?

A: Yes — it is part of the GOST R unified procedures and conformity assessment series for the use of nuclear energy (the 50.05.* family), which contains companion standards addressing other NDT methods and inspection targets.

Q: What are the key keywords?

A: Ultrasonic testing, NDT, base materials, semi‑products, nuclear energy, conformity assessment, inspection procedures, personnel qualification.