GOST 21.208-2013 PDF

Full title and description

GOST 21.208-2013 — System of design documents for construction. Industrial process automation. Instrumentation symbols for use in diagrams. The standard defines conventional (graphical and alphanumeric) symbols and marking rules for instruments and automation devices used in project and working documentation across construction and industrial facilities.

Abstract

This interstate (GOST) standard establishes uniform conditional designations of instruments, sensors, controllers, indicators and other automation means for use on scheme drawings, electrical and process diagrams and related project/working documentation. It replaces earlier national rules for instrument symbols to harmonize documentation within the System of Project Documentation for Construction (SPDS).

General information

• Status: In force / effective (implemented and applied in project documentation; replaces GOST 21.404-85).
• Publication date: Approved by Rosstandart on 17 December 2013; official implementation date 1 November 2014 (common publication date shown as 01.11.2014).
• Publisher: Federal Agency on Technical Regulating and Metrology (Rosstandart) — published/distributed in print and electronic form by Standartinform / authorized standards distributors.
• ICS / categories: 01.80.30 — Graphical symbols for engineering and construction drawings, diagrams, plans and related technical documentation (SPDS / automation of technological processes).
• Edition / version: GOST 21.208-2013 (original approval in 2013; implemented 2014).
• Number of pages: Official printed imprint commonly catalogued as 26 pages (some commercial distributions list 30–31 pages depending on front/back matter and format).

Scope

The standard applies to project and working documentation for all types of construction and industrial facilities where automation and instrumentation are used. It sets mandatory graphic and textual marking rules for showing primary sensors, transmitters, controllers, indicators, actuators and auxiliary automation devices on process and control diagrams, single-line and wiring drawings, and panel layouts. The standard also references general graphical rules and related SPDS documents.

Key topics and requirements

• Uniform conditional (graphical) symbols for instruments and automation devices used on diagrams and drawings.
• Alphanumeric designation rules (letter codes and indices) that identify measured/controlled variables and device functions.
• Placement and orientation conventions for symbols on different types of schemes (process flow, control, wiring, instrument location).
• Rules for distinguishing field (on-site) devices from panel-mounted and secondary instruments.
• Cross-references to related SPDS and general drawing standards (lines, general-purpose symbols, documentation formatting).

Typical use and users

Primary users are instrumentation and control engineers, automation specialists, electrical designers, process engineers, CAD/drawing technicians, project documentation authors and reviewers, and regulatory/compliance personnel preparing or checking SPDS documentation for industrial and building projects. The standard is used during schematic design, detailed design, equipment specification and preparation of as-built/working drawings.

Related standards

Closely related GOST/SPDS documents include GOST 21.404-85 (superseded by this standard), GOST 21.408-2013 (rules for industrial process automation working documentation), and general graphic/documentation standards such as GOST 2.721-74 and GOST 2.303-68. These referenced standards govern general-line types, general-purpose graphical symbols and rules for preparing design documentation.

Keywords

instrumentation symbols, automation, SPDS, project documentation, schematics, graphical designation, control systems, sensors, transmitters, controllers, Rosstandart, GOST 21 series.

FAQ

Q: What is this standard?

A: GOST 21.208-2013 is an interstate (GOST) standard within the System of Project Documentation for Construction (SPDS) that defines conventional graphical and alphanumeric designations for instruments and automation means used on process and control diagrams and in project/working documentation.

Q: What does it cover?

A: It covers symbols, marking and placement rules for primary measuring instruments, transmitters, controllers, indicators, actuators and associated automation equipment on various diagram types (process, control, wiring, panel layouts), and sets how devices are identified in drawings.

Q: Who typically uses it?

A: Instrumentation and control engineers, electrical and process designers, CAD technicians, and anyone producing, reviewing or approving automation-related project and working documentation for construction and industrial projects.

Q: Is it current or superseded?

A: As published it replaced GOST 21.404-85; it is listed as an active (in-force) standard in official and commercial catalogs. Users should confirm there have been no later amendments or cancellations for their specific jurisdiction or project before use.

Q: Is it part of a series?

A: Yes — it is part of the GOST 21.x series (System of Project Documentation for Construction, SPDS) that comprises multiple standards covering drawing formats, discipline-specific documentation rules and execution of project/working documentation.

Q: What are the key keywords?

A: Instrumentation symbols, automation, SPDS, control diagrams, graphical designations, GOST 21.208-2013.