PNAE G-7-014-89 PDF

Full title and description

Uniform control methods for basic materials (semi-finished materials), welded joints and weld deposition of equipment and pipelines of nuclear power units. Ultrasonic testing. Part I. Control of basic materials (semi-finished materials) — (ПНАЭ Г-7-014-89). The document establishes unified ultrasonic-testing methodologies for base materials (forgings, castings, bars, sheets, pipes and stamped blanks) used in manufacture of equipment and piping for nuclear power installations.

Abstract

PNAE G-7-014-89 (ПНАЭ Г‑7‑014‑89) provides detailed procedures, acceptance criteria and procedural requirements for ultrasonic (UZ) examination of base (semi-finished) materials intended for nuclear power plant equipment and piping. It covers methods of ultrasonic inspection (echo, through‑transmission, shadow‑techniques, immersion and contact variants), equipment and transducer requirements, calibration/standard samples, examiner qualification, documentation and safety measures for testing. The standard was introduced in 1989 and came into force on 01 July 1990.

General information

• Status: Withdrawn / no longer in force (recognized as not subject to application by Rostekhnadzor; superseded by modern GOST documents).
• Publication date: 1989 (introduced into force 01 July 1990).
• Publisher: Approved by the State Committee for Supervision of Safe Conduct of Works in Nuclear Power (Gosatomenergonadzor / USSR) — later administered under Russian nuclear safety authorities.
• ICS / categories: Nuclear power industry; Non‑destructive testing (ultrasonic); Materials control; Quality assurance for NPP equipment.
• Edition / version: Original issue 1989 (Part I of a series of unified control-methods documents).
• Number of pages: reported variously by publishers (commonly listed as 29 pages in some catalogues and 46 pages in other editions/translations — depends on edition/format).

Scope

The standard sets out mandatory-when-applied methodologies for ultrasonic inspection of base (semi‑finished) materials used to fabricate nuclear‑installation equipment and piping. It specifies types of controlled semi‑finished items (forgings, castings, bars, plates, pipes, stamped blanks), methods and schemes of ultrasonic examination, limits of detectability, calibration and reference sample requirements, personnel attestation, documentation and safety rules for carrying out UZ control in the nuclear sector. It is part of the PNAE (Rules and Norms in Atomic Energy) family addressing control and quality assurance for nuclear plant components.

Key topics and requirements

• Overview of ultrasonic methods applicable to semi‑finished materials (echo, through‑transmission, mirror‑shadow, echo‑through, contact/immersion; longitudinal, shear, Rayleigh and Lamb wave types).
• Attestation and qualification requirements for ultrasonic examiners (minimum procedures for re‑checks and oversight by higher‑grade inspectors).
• Requirements for ultrasonic equipment, transducers and calibration standards, including sensitivity settings and allowable deviations.
• Control schemes and procedural instructions for forgings, bars, castings, plates, pipes and bimetallic products (including recommended schemes by wall thickness/geometry).
• Definition and use of standard (artificial) reflectors and enterprise calibration specimens (SOP) for setting levels of fixation and sensitivity.
• Documentation, reporting and acceptance criteria for inspection results, and coordination with production technical documentation (PTD) and materials specifications.
• Safety, sanitary and electrical requirements for conducting UZ testing in industrial and nuclear environments.
• Traceability: requirement to reference this Part I together with related PNAE control rules (e.g., PNAE G‑7‑010‑89) when applying methods to welded joints and components.

Typical use and users

Primary users include: non‑destructive testing (NDT) laboratories and defectoscopists working for manufacturers of nuclear equipment, quality assurance and inspection units at nuclear power plants and suppliers, design and engineering organizations involved in NPP equipment procurement, and regulatory/oversight bodies responsible for conformity assessment in the nuclear sector. The document was mandatory guidance for ministries and organisations engaged in design, manufacture, installation and operation of equipment covered by the PNAE rules.

Related standards

Belongs to the PNAE G‑7 series of documents on control of materials and welds (for example PNAE G‑7‑010‑89, PNAE G‑7‑015‑89, PNAE G‑7‑017‑89, etc.). In the Russian regulatory system the technical content of PNAE G‑7‑014‑89 was later incorporated into and superseded by the GOST R series of conformity/inspection standards (notably GOST R 50.05.05‑2018 for ultrasonic examination of base materials). The PNAE documents were officially recognized as not subject to application by a Rostekhnadzor order in 2018; users are now directed to the corresponding GOST R documents and contemporary normative technical documentation.

Keywords

ПНАЭ Г-7-014-89; PNAE G-7-014-89; ultrasonic testing; UZК; semi‑finished materials; non‑destructive testing; nuclear power plant equipment; material control; defectoscopy; calibration specimens; inspector attestation.

FAQ

Q: What is this standard?

A: PNAE G-7-014-89 (ПНАЭ Г‑7‑014‑89) is a sectoral guidance document that defined unified ultrasonic inspection methods for base (semi‑finished) materials used in nuclear power plant equipment and piping.

Q: What does it cover?

A: It covers ultrasonic inspection methods, equipment and transducer requirements, calibration and standard specimens, procedural schemes for different semi‑finished items (forgings, castings, sheets, pipes, etc.), examiner attestation, documentation and safety rules for UZ control in the nuclear sector.

Q: Who typically uses it?

A: NDT laboratories, defectoscopists, manufacturers and suppliers of NPP equipment, plant QA/inspection personnel, engineering/design organisations and regulators involved in material and weld quality assurance for nuclear installations.

Q: Is it current or superseded?

A: It has been withdrawn from application in the Russian regulatory system (Rostekhnadzor order recognizing a set of PNAE documents as not subject to application in August 2018) and its technical content has been superseded by GOST R standards (notably GOST R 50.05.05‑2018 for ultrasonic control of base materials). Users should follow the current GOST R series and other applicable national/regional regulations.

Q: Is it part of a series?

A: Yes — it is Part I of a set of unified control‑method documents within the PNAE G‑7 family addressing basic materials, welded joints and surfacing of equipment and piping for atomic energy installations; related parts and methods include magnetic‑particle, radiographic, visual and other methods covered in companion PNAE G‑7 documents.

Q: What are the key keywords?

A: Ultrasonic testing; semi‑finished materials; NDT; nuclear power plant equipment; PNAE G‑7; defectoscopy; calibration specimens; inspector attestation; material acceptance criteria.