GOST 14782-86 PDF

Full title and description

GOST 14782-86 — Nondestructive testing. Welded joints. Ultrasonic methods. The standard specifies ultrasonic inspection techniques and requirements for the nondestructive testing of welded joints using ultrasonic methods.

Abstract

This standard defines procedures, calibration and verification practices, and methodical requirements for carrying out ultrasonic examinations of welded joints to detect and evaluate discontinuities and defects. It addresses probe selection, calibration blocks, scanning techniques and acceptance-related checks used in ultrasonic inspection of welds.

General information

• Status: Withdrawn / replaced (superseded by later national/regulatory documents).
• Publication date: Original designation year 1986 (designator "-86"); commonly published/issued in commercial catalogues as 01 January 1988.
• Publisher: State standards system (GOST) — originally issued under the Soviet State Committee for Standards (Gosstandart) / GOST system.
• ICS / categories: 19.100 — Non-destructive testing (Ultrasonic testing of welded joints).
• Edition / version: Edition: 1986 (designation suffix -86). Some commercial catalogues list the available electronic/translated editions.
• Number of pages: Varies by publication/translation — catalog records show 27 pages (some vendor translations) to 39 pages (other editions).

Scope

GOST 14782-86 covers ultrasonic (UT) inspection of welded joints: purpose and limits of application, required calibration and verification procedures, recommended transducers and instruments, scanning and search procedures for common weld types, defect detection and sizing approach, and reporting requirements. It applies to industrial welded assemblies where ultrasonic methods are suitable for detection and assessment of discontinuities.

Key topics and requirements

• Definitions and terminology for ultrasonic inspection of welds and related measurements.
• Calibration practices and reference blocks (standard specimens) used to set sensitivity and verify instrument performance.
• Recommended probe types, frequencies and coupling methods for common weld geometries.
• Scanning procedures (search patterns), angle-beam and normal-beam techniques and position-setting.
• Acceptance checks, dead-zone/near-surface evaluation and defect indication evaluation (detection and sizing principles).
• Documentation and reporting format for inspection results.

Typical use and users

Used by nondestructive testing (NDT/NDE) engineers, ultrasonic technicians, welding quality inspectors, fabrication and maintenance organizations, and certification bodies that perform or oversee ultrasonic examination of welded joints in pressure equipment, pipelines, structural steelwork and heavy fabrication. The standard served as a national/regional procedural reference before being superseded by later national or harmonized documents.

Related standards

Replaced/superseded references and related modern documents include the later national document GOST R 55724-2013 and various ISO/EN standards on ultrasonic testing (general principles and calibration blocks). Users should consult the replacement/national normative documents and current ISO ultrasonic standards for up-to-date procedures.

Keywords

GOST 14782-86, nondestructive testing, NDT, ultrasonic testing, welded joints, weld inspection, calibration block, probe selection, scan technique, flaw detection, Gosstandart.

FAQ

Q: What is this standard?

A: GOST 14782-86 is a State (GOST) standard titled "Nondestructive testing. Welded joints. Ultrasonic methods" that specifies ultrasonic examination methods for welds.

Q: What does it cover?

A: It covers procedures, calibration and verification, probe and instrument selection, scanning techniques, and rules for detecting and assessing discontinuities in welded joints using ultrasonic testing.

Q: Who typically uses it?

A: NDT/NDE engineers and technicians, welding quality inspectors, inspection bodies and manufacturing/maintenance organizations that perform ultrasonic weld inspection. Historically it was used in the GOST/CIS context prior to adoption of more recent national or international documents.

Q: Is it current or superseded?

A: It is listed as withdrawn/superseded in catalogue records and has been replaced by later normative documents (for example the national document GOST R 55724-2013); users should rely on the replacement standard or current ISO/EN documents for up-to-date requirements.

Q: Is it part of a series?

A: Yes — it belongs to the family of GOST standards on nondestructive testing and specifically to the set of documents dealing with ultrasonic testing of materials and welded joints; related standards and later national/ISO equivalents address complementary topics such as calibration blocks, ultrasonic equipment verification and specific UT techniques.

Q: What are the key keywords?

A: Ultrasonic testing, welded joints, nondestructive testing (NDT), calibration block, probe, scanning technique, defect detection, GOST, Gosstandart.