GOST 18442-80 PDF

Full title and description

GOST 18442-80 — "Nondestructive testing. Capillary methods. General requirements". The standard establishes general requirements, materials and equipment, sensitivity classes, preparation and sequence of operations, processing of results and safety provisions for capillary (penetrant) methods of nondestructive testing (NDT).

Abstract

GOST 18442-80 sets out rules and normative requirements for performing capillary (penetrant) inspection of materials, semi-finished products and finished articles to detect surface-breaking discontinuities visible or nearly invisible to the naked eye. It covers selection and characteristics of penetrants, cleaners and developers, sensitivity classification (I–IV), control samples/reference blocks and basic procedural steps including surface preparation, application and removal of penetrant, development, interpretation and documentation of results.

General information

• Status: Adopted as a USSR state standard (GOST 18442-80); widely referenced for capillary/penetrant NDT procedures and referenced with later amendments.
• Publication date: Introduced by decision of the USSR State Committee for Standards on 15 May 1980; effective from 1 July 1981.
• Publisher: USSR State Committee for Standards (Gosstandart) — original issuing body (historical standard; often distributed/republished by standards libraries/vendors).
• ICS / categories: 19.100 — Non-destructive testing (penetrant/ capillary methods).
• Edition / version: Designation GOST 18442-80 (year code 1980); reviewed and subject to amendments (noted amendments Amd.4.83 and Amd.7.86 in available records).
• Number of pages: Approximately 16 pages (typical published edition length).

Scope

Applies to capillary (penetrant) nondestructive testing of materials, semi-finished products and finished parts where detection of surface-breaking discontinuities is required. The standard covers intended use, permitted object types, general requirements for penetrant materials and accessories, equipment (including UV irradiators and screens), classes of sensitivity, procedural sequence for inspection, criteria for acceptance/rejection and reporting/recording results. It is intended to provide a uniform baseline for performing and assessing penetrant inspections in industrial settings.

Key topics and requirements

• Definition and purpose of capillary (penetrant) testing and its applicability to surface-breaking discontinuities.
• Requirements for defectoscopic materials: penetrants, cleaners/degreasers, developers, and their standardized forms/packaging.
• Classification of sensitivity into classes I–IV with numerical ranges for crack opening and minimum crack length (examples: Class I — opening <1 µm; Class II — 1–10 µm; Class III — 10–100 µm; Class IV — 100–500 µm).
• Procedural sequence: surface preparation, penetrant application and dwell time, excess penetrant removal, developer application, appropriate observation (visible or ultraviolet illumination), interpretation and documentation.
• Reference/control test blocks and acceptance checks: requirements for control samples used to check penetrant performance and sensitivity settings.
• Appendices and supplementary forms (e.g., formulary of defectoscopic materials, recipe form, method for UV irradiance measurement, manufacturing notes for fluorescent screens).

Typical use and users

Used by NDT/defectoscopy laboratories, inspection and quality-control departments in manufacturing, petrochemical, aerospace, power generation, heavy machinery, metalworking and maintenance organizations. Typical users include NDT technicians, inspectors, quality engineers, laboratory managers and training organizations that qualify personnel for penetrant testing. Control-sample manufacturers and suppliers of penetrant materials also use the standard as a technical reference.

Related standards

Related national and international standards include the ISO series on penetrant testing (ISO 3452 parts on principles, materials, reference blocks and equipment) and other GOST/GOST‑R documents on NDT such as standards for magnetic-particle testing and methods for equipment/qualification. GOST 18442-80 historically replaced the earlier GOST 18442-73 and has been referenced alongside later Russian standards and methodical guidance for defectoscopy.

Keywords

capillary methods, penetrant testing, nondestructive testing (NDT), defectoscopy, penetrant, developer, cleaner, sensitivity classes, control sample, fluorescent penetrant, visible dye penetrant, UV irradiance.

FAQ

Q: What is this standard?

A: GOST 18442-80 is a Soviet-era state standard that specifies general requirements and procedures for capillary (penetrant) nondestructive testing to detect surface-breaking defects.

Q: What does it cover?

A: It covers materials and equipment for penetrant testing, classes of sensitivity, procedural sequence (surface prep, application, removal, development, inspection), reference blocks/control samples, documentation and basic safety/measurement guidance (including UV irradiance considerations for fluorescent methods).

Q: Who typically uses it?

A: NDT technicians and inspectors, quality-control departments, testing laboratories, maintenance and manufacturing organizations that perform penetrant inspections, and suppliers/manufacturers of control samples and penetrant materials.

Q: Is it current or superseded?

A: GOST 18442-80 was introduced in 1980 (effective 1 July 1981) and replaced an earlier 1973 edition (GOST 18442-73). Records show it was reviewed and amended in the 1980s; many organizations still reference it or national derivatives, while international practice is also guided by ISO penetrant-testing standards (ISO 3452 series). For contractually binding use, always verify the currently authorized national or industry standard version with the applicable standards body or purchaser — national restoration/supersession status can vary by country and industry.

Q: Is it part of a series?

A: It belongs to the family of nondestructive testing standards addressing penetrant/capillary methods and is used alongside other NDT standards (magnetic-particle, ultrasonic, radiographic, etc.) and related GOST/GOST‑R documents; the standard itself contains appendices and forms forming an internal series of application guidance.

Q: What are the key keywords?

A: Capillary methods, penetrant testing, nondestructive testing, penetrant, developer, cleaner, fluorescent, UV, sensitivity class, reference block, defectoscopy.