GOST 33257-2015 PDF

Full title and description

GOST 33257-2015 — "Pipeline valves. Methods of control and testing" (Russian: "ГОСТ 33257-2015 — Арматура трубопроводная. Методы контроля и испытаний"). National / interstate standard that defines required test types, test methods and acceptance criteria for pipeline valves (gate, globe, check, butterfly, control/regulating valves and other pipeline fittings).

Abstract

This standard establishes the categories of tests, mandatory (basic) testing and control methods and the criteria for evaluating test results for pipeline valves. It covers organizational procedures for conducting preliminary, acceptance, qualification, periodic, type and operational tests, specifies environmental and test‑medium conditions, measurement requirements, and typical non‑destructive and destructive test methods used to verify strength, tightness, operability and leak rates of valve components and assemblies.

General information

• Status: Active / in force (introduced as a new interstate GOST in 2015).
• Publication date: Approved by the Federal Agency for Technical Regulation and Metrology (Rosstandart) 26 May 2015; first edition (2015), put into national use in 2016 (first edition).
• Publisher: Federal Agency for Technical Regulation and Metrology (Rosstandart) — issued as an interstate GOST standard.
• ICS / categories: 23.060.01 (Valves in general) — Fluid systems and components for general use; pipeline valves.
• Edition / version: 1st edition — GOST 33257-2015 (2015 version).
• Number of pages: Approximately 58 pages (electronic / printed editions vary slightly by publisher).

Scope

The standard applies to pipeline valves in assembly and specifies the types and categories of control and testing to be used for serially produced valves and prototype/test samples. It defines the mandatory set of basic tests (strength, tightness, operability, leakage, functional endurance, etc.), environmental and temperature limits for testing, required instrumentation and measurement procedures, and rules for test documentation and evaluation of results. It is intended for use in acceptance, type, periodic, qualification and operational testing of valves used in industry and utilities.

Key topics and requirements

• Classification of test types and test categories (preliminary, acceptance, type, qualification, periodic, operational).
• Mandatory/basic tests: strength (pressure) tests, tightness/leakage tests, operability / functional tests, endurance (cycle) tests.
• Leak testing methods and acceptance criteria (hydraulic/pneumatic pressure tests, bubble/foam methods, helium/mass‑spectrometer leak detection, vacuum/helium techniques where applicable).
• Non‑destructive and destructive control methods: visual, dimensional, dye‑penetrant, ultrasonic, radiographic where required; testing of welds and joints.
• Specified ambient and test‑medium temperature ranges, humidity and atmospheric conditions for reproducible tests.
• Instrument and measurement requirements: independent measuring instruments of equivalent accuracy, stepwise pressure increase with hold points for inspection.
• Requirements for test organization, test reports and documentation, defect registration and procedures for suspension/resumption of tests.
• Criteria for pass/fail evaluation of test results and requirements for corrective actions / re‑testing.

Typical use and users

Manufacturers of pipeline valves (design and production), factory quality control and test laboratories, independent certification and testing bodies, engineering procurement & construction (EPC) contractors, plant and pipeline operators, and procurement/specification engineers use this standard to define and verify valve performance, ensure compliance with contractual acceptance testing, and to support type‑approval and periodic qualification testing.

Related standards

Commonly referenced and related documents include national and international valve and testing standards and normative references such as: GOST 24856 (terms and definitions for pipeline valves), GOST 33259 (flanges for valves and pipelines), GOST 9544 / GOST R standards on valve leakage and general specifications, GOST 12.2.063-2015 (general safety requirements for pipeline valves), ISO/IEC/ISO valve testing standards (for example ISO 5208 — pressure testing; ISO 15848 series — fugitive emissions / leakage testing), and standards on product development and testing procedures (GOST R 15.001 / GOST 15.309). Specific national GOST and GOST‑R normative references cited in the standard provide detailed test methods and instrumentation requirements.

Keywords

pipeline valves, valve testing, leakage test, hydraulic test, pneumatic test, hermeticity, acceptance testing, type testing, qualification testing, non‑destructive testing, valve operability, strength test, GOST 33257-2015.

FAQ

Q: What is this standard?

A: GOST 33257-2015 is an interstate/national standard titled "Pipeline valves. Methods of control and testing" that sets out mandatory and recommended test types, methods and acceptance criteria for pipeline valves.

Q: What does it cover?

A: It covers the categories of tests (preliminary, acceptance, type, qualification, periodic, operational), detailed methods for basic mandatory tests (strength/pressure, tightness/leakage, operability and endurance), NDT and destructive checks, test conditions (temperatures, atmospherics), measurement requirements and reporting procedures.

Q: Who typically uses it?

A: Valve manufacturers, factory quality control and test laboratories, third‑party testing and certification bodies, EPC contractors, plant operators and buyers specifying acceptance testing for pipeline valves.

Q: Is it current or superseded?

A: It was approved in 2015 (first edition) and is the active document replacing earlier national test procedure standards; users should confirm locally whether any amendments or national adoptions affect its applicability for a specific country or project.

Q: Is it part of a series?

A: Yes — it is part of the suite of GOST standards addressing pipeline valves and related components (terms/definitions, dimensions, leakage and safety requirements). It sits within ICS 23.060.01 (valves in general) and is typically used alongside other valve‑specific GOST/ISO documents.

Q: What are the key keywords?

A: Pipeline valves, valve testing, leakage/pressure testing, hydraulic/pneumatic tests, acceptance testing, NDT, operability, GOST 33257-2015.