GOST 8.586.1-2005 PDF

Full title and description

GOST 8.586.1-2005 — State system for ensuring the uniformity of measurements. Measurement of liquids and gases flow rate and quantity by means of orifice (flow‑contracting) instruments. Part 1: Principle of the method of measurements and general requirements. The standard establishes terms, measurement principles and formulas, and general technical and metrological requirements for standard flow‑contracting devices (orifice plates, nozzles, Venturi elements and related assemblies) used in circular full‑bore pipelines.

Abstract

This part of the GOST 8.586.1–8.586.5 series defines the principle of the differential‑pressure method using standard flow‑contracting devices and sets out general requirements for device geometry, installation, pressure‑tapping arrangements, measuring lines and methods for calculating flow rate and quantity of liquids and gases. It provides the framework needed to ensure repeatability and traceability of flow measurements performed without individual calibration of every device when experimental characterisation data are available.

General information

• Status: Active / in force (national standard adopted for use).
• Publication date: Designated 2005 (standard text); date of national introduction / entry into effect: 1 January 2007 (with errata published later).
• Publisher: Federal Agency on Technical Regulation and Metrology (Rosstandart) / official distributed editions published by Standartinform / national standards bodies.
• ICS / categories: 17.020 (Metrology and measurements) — Measurement of flow and quantities of fluids; KGS code T86.
• Edition / version: First edition (2005); errata/clarifications issued subsequently (2007 and later amendments referenced in official records).
• Number of pages: Approximately 48–49 pages (typical printed/PDF edition).

Scope

Applies to measurement of flow rate and totalized quantity of liquids and gases flowing in completely filled circular cross‑section pipelines using standard flow‑contracting devices. The standard covers required terminology, the physical principle of differential‑pressure measurement with such devices, calculation methods for flowrate and quantity, general geometric and installation requirements, pressure‑tapping arrangements, and the conditions under which devices may be used without individual calibration (when supported by adequate experimental characterisation). It does not replace the technical, device‑specific requirements contained in the companion parts that address particular device types and measurement procedures.

Key topics and requirements

• Definitions and symbols used in flow measurement by flow‑contracting devices.
• Principle of the differential‑pressure measurement method and core calculation relationships for volumetric and mass flow.
• General geometric and manufacturing quality requirements for orifice plates, nozzles (including ISA 1932), Venturi nozzles and Venturi tubes where applicable.
• Requirements for installation in pipelines: straight‑run requirements, alignment, position of pressure tappings and upstream/downstream disturbance limits.
• Pressure‑tapping types and locations (corner taps, flange taps, vena contracta taps, averaging chambers) and guidance on selection and use.
• Metrological requirements: conditions for use without individual calibration, requirements for experimental characterisation, and guidance on estimating measurement uncertainty.
• Reference to harmonized international practice (the standard is aligned with ISO 5167 series principles) and cross‑references to companion parts (technical requirements and measurement procedures).

Typical use and users

Used by national and industrial metrology laboratories, pipeline and process engineers, flow‑measurement specialists, manufacturers of flow‑contracting devices, testing and calibration laboratories, oil & gas operators, utilities and any organisation performing custody transfer, process control or regulatory flow measurements where differential‑pressure devices are selected.

Related standards

Companion parts of the series and related normative documents include: GOST 8.586.2 (Orifice plates — technical requirements), GOST 8.586.3 (Nozzles and Venturi nozzles — technical requirements), GOST 8.586.4 (Venturi tubes — technical requirements), GOST 8.586.5 (Measurement procedure / practice), ISO 5167 series (international guideline for flow measurement with pressure‑differential devices), and related GOSTs on metrology terms and units (for example GOST 15528 and GOST 8.417).

Keywords

flow measurement, differential pressure, orifice plate, ISA 1932 nozzle, Venturi nozzle, Venturi tube, metrology, measurement uncertainty, pressure taps, pipeline installation, GOST 8.586

FAQ

Q: What is this standard?

A: It is the first part of a national standard series that establishes the principle and general requirements for measuring flow rate and quantity of liquids and gases using standard flow‑contracting (orifice) devices.

Q: What does it cover?

A: It covers definitions, the measurement principle and core calculation relationships, general geometric and installation requirements, pressure‑tapping arrangements, and metrological conditions under which standard devices may be used without individual calibration. Device‑specific technical details are provided in the companion parts of the series.

Q: Who typically uses it?

A: Metrology institutes, calibration and testing laboratories, device manufacturers, pipeline and process engineers, and operational personnel in industries such as oil & gas, chemical, water utilities and energy where flow measurement is required.

Q: Is it current or superseded?

A: The 2005 edition (introduced into national use in 2007) is the baseline document for the series and has been kept in force with errata and subsequent clarifications. Users should check national standards registries for the latest status and any amendments or replacements before application.

Q: Is it part of a series?

A: Yes — it is Part 1 of a multi‑part GOST series on measurement of flow rate and quantity by means of standard flow‑contracting devices (other parts cover technical requirements for orifice plates, nozzles, Venturi tubes and measurement procedures).

Q: What are the key keywords?

A: Flow measurement, orifice plate, nozzle, Venturi, differential pressure, metrology, measurement uncertainty, pressure tapping, pipeline installation.