GOST R 50.05.03-2018 PDF

Full title and description

ГОСТ Р 50.05.03-2018 — Система оценки соответствия в области использования атомной энергии. Оценка соответствия в форме контроля. Унифицированные методики. Ультразвуковой контроль и измерение толщины монометаллов, биметаллов и антикоррозионных покрытий (Conformity assessment system for the use of nuclear energy. Conformity assessment in the form of examination. Unified procedures. Ultrasonic examination and thickness measurement of monometals, bimetals and corrosion‑resistant claddings).

Abstract

Standard GOST R 50.05.03-2018 establishes unified procedures for ultrasonic testing (UT) and for measurement of material thickness applied to monometallic, bimetallic and corrosion‑resistant cladding surfaces used in products and components for atomic‑energy facilities. It defines requirements for test methods, equipment and instrumentation, personnel qualification, calibration and acceptance criteria, conditions for testing, result processing and documentation, and safety measures applicable during UT and thickness measurement.

General information

• Status: Superseded — replaced by GOST R 50.05.03-2022 (new edition approved December 19, 2022; entry into force 01 January 2024).
• Publication date: Approved by Rosstandart on 02 February 2018; date of introduction (entry into force) 01 March 2018.
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart); developed with participation of State Corporation Rosatom.
• ICS / categories: Atomic energy / inspection and testing — OKS/ICS classification 27.120 (atomic energy; non‑destructive examination in nuclear sector).
• Edition / version: GOST R 50.05.03-2018 (2018 edition).
• Number of pages: 36 pages (2018 edition).

Scope

The standard applies to ultrasonic control and thickness measurement of monometallic and bimetallic parts and components, and to corrosion‑resistant claddings (welded or surfaced layers) used in products for atomic‑energy installations during manufacturing, installation and operation. It covers UT techniques for thickness measurement, requirements for instruments and transducers, calibration samples and procedures, conditions for measurement, personnel competence and qualification, processing and presentation of results, and safety/working environment requirements while performing inspections.

Key topics and requirements

• Unified ultrasonic testing methodology for thickness measurement and defect detection in monometal, bimetal and corrosion‑resistant claddings.
• Requirements for instruments (pulse echo thickness gauges and defectoscopes), probes/transducers (including EMAT where applicable), calibration samples and calibration procedures.
• Measurement ranges and typical application limits (thickness measurement of metal from very thin to large sections; specific limits and procedures defined in the standard).
• Personnel competence, responsibilities and documentation for inspection operations; requirements for procedural and technological control documentation (technological instruction, technological card).
• Conditions of testing: surface preparation, temperature and lighting considerations, electrical power stability and measures to ensure valid readings.
• Data recording, reporting formats, marking of inspected areas and acceptance/rejection criteria for measured thickness and detected indications.
• Safety and quality controls to reduce risk during inspection in nuclear‑industry environments.

Typical use and users

The standard is used by nuclear‑industry conformity assessment bodies, plant inspection and quality‑control departments, non‑destructive testing (NDT) laboratories, contract NDT service providers, equipment manufacturers and calibration laboratories, as well as training and certification centers preparing personnel for UT/thickness‑measurement tasks in atomic‑energy facilities.

Related standards

Part of the GOST R 50.05 series for conformity assessment in the use of nuclear energy; related standards include other unified methods in the series (for example, GOST R 50.05.01‑2018, GOST R 50.05.02‑2018, GOST R 50.05.04‑2018, GOST R 50.05.05‑2018, GOST R 50.05.06‑2018 and others). The 2018 edition of this document was later superseded by the 2022 edition, GOST R 50.05.03‑2022, which consolidates and updates requirements.

Keywords

ultrasonic testing; UT; thickness measurement; non‑destructive testing; NDT; monometal; bimetal; corrosion‑resistant cladding; conformity assessment; atomic energy; Rosatom; Rosstandart.

FAQ

Q: What is this standard?

A: GOST R 50.05.03‑2018 is a Russian national standard that provides unified methodologies for ultrasonic examination and thickness measurement of monometallic, bimetallic and corrosion‑resistant cladding surfaces within the conformity assessment system for the use of nuclear energy.

Q: What does it cover?

A: It covers methods and requirements for ultrasonic thickness measurement and related inspection operations: equipment and probes, calibration and reference samples, procedural documentation, personnel qualification, measurement conditions, data processing and reporting, and safety measures during inspection activities.

Q: Who typically uses it?

A: NDT technicians and engineers, inspection/quality departments at nuclear facilities, third‑party inspection bodies and laboratories, equipment and probe manufacturers, and certification/training organizations working in the nuclear sector.

Q: Is it current or superseded?

A: The 2018 edition has been superseded — GOST R 50.05.03‑2022 was approved in December 2022 and became effective on 01 January 2024; users in practice should follow the 2022 edition for current requirements.

Q: Is it part of a series?

A: Yes — it is one item in the GOST R 50.05 series of standards establishing unified procedures for conformity assessment (in the form of inspection/testing) in the field of atomic energy; other documents in the series address different NDT methods and related conformity‑assessment procedures.

Q: What are the key keywords?

A: Ultrasonic testing, thickness measurement, non‑destructive testing (NDT), monometal, bimetal, corrosion‑resistant cladding, conformity assessment, atomic energy, calibration, personnel qualification.