GOST 31838-2012 PDF

Full title and description

GOST 31838-2012 — "Аппараты колонные. Технические требования" (Columns. Technical requirements). The standard establishes technical requirements for the design, manufacture, control, testing and acceptance of column-type apparatus used for heat- and mass-transfer operations (for example distillation, absorption and extraction) in oil‑refining, petrochemical, chemical, gas and related industries.

Abstract

GOST 31838-2012 specifies classification, principal design features, dimensional and manufacturing tolerances, materials and thermal treatment guidance, requirements for internal devices (trays and packings), assembly and welding, nondestructive control and acceptance tests for vertical column apparatus operating at atmospheric, vacuum and elevated pressures. It is intended to be used together with referenced strength, safety and calculation standards.

General information

• Status: Active / In force.
• Publication date: Adopted 2012; came into effect 01 January 2014 (registry/official acceptance late 2012).
• Publisher: Interstate (intergovernmental) standard adopted via the Interstate Council for Standardization, Metrology and Certification (EASC) and entered into national use through the Federal Agency on Technical Regulating and Metrology (Rosstandart); developed by VNIINMASH (All‑Russia research institute of standardization and certification in machine engineering).
• ICS / categories: OKS/OCS 71.120 (chemical / column apparatus classification).
• Edition / version: GOST 31838-2012 (original 2012 issue; effective 2014; later reprints/updates noted, including editorial updates referenced in vendor catalogs).
• Number of pages: Typically published as 16–18 pages in available electronic/print editions (commonly listed as 18 pages in standard catalogues).

Scope

This standard applies to vertical column apparatus equipped with internal mass‑ and heat‑transfer devices (tray and packed internals), used for gas–liquid contact operations and, where applicable, for systems containing multiple liquid phases or dispersed solids (for example in wash columns). It sets mandatory technical requirements that cover geometry, tolerances, materials, welding and assembly, inspection and acceptance tests; it is intended to be used alongside national safety and strength calculation standards referenced in the normative references.

Key topics and requirements

• Classification and types of column apparatus (atmospheric, vacuum, pressure).
• Design and constructional requirements for shells, heads, manways and nozzles, including allowable dimensional deviations and ovality limits.
• Requirements for internal devices — trays, packings, distributors and collectors — and mounting/spacing rules.
• Material selection, heat treatment and weld quality requirements; reference to strength calculation standards and safety rules.
• Nondestructive testing, hydraulic and pneumatic tests, acceptance criteria and documentation required for delivery.
• Manufacturing, assembly and inspection tolerances; special provisions for columns with small diameters (sectional/segmental construction) and long columns.
• References to related norms for strength calculation, seismic/wind loading and pressure‑vessel safety.

Typical use and users

Used by mechanical and process engineers, manufacturers of pressure vessels and column equipment, petrochemical and refinery technical departments, inspection and certification bodies, and procurement teams specifying column apparatus for heat‑ and mass‑transfer applications. It is referenced in technical specifications, fabrication drawings, inspection plans and acceptance testing protocols.

Related standards

The standard contains normative references and cross‑references to other GOSTs and national rules, for example standards on strength calculation and pressure vessels (e.g., ГОСТ 14249‑89 and related calculation documents), national safety rules and applicable GOST R standards; the text also notes correspondence with EN/European documents in its informational material. Users should consult the normative references section of GOST 31838-2012 for the full list of related documents.

Keywords

column apparatus, columns, distillation column, packed column, tray column, heat‑and mass‑transfer, fabrication tolerances, welding, nondestructive testing, acceptance tests, petrochemical equipment.

FAQ

Q: What is this standard?

A: GOST 31838-2012 is an interstate (GOST) standard that establishes technical requirements for column‑type apparatus used in heat and mass transfer processes.

Q: What does it cover?

A: It covers classification, design and construction requirements, materials and heat treatment, welding and assembly, tolerances, internal devices (trays and packings), inspection and testing, and acceptance criteria for vertical column apparatus.

Q: Who typically uses it?

A: Mechanical and process engineers, equipment manufacturers, quality/inspection bodies, and technical procurement teams in oil‑refining, petrochemical, chemical and related industries.

Q: Is it current or superseded?

A: As of available catalog and registry records the 2012 edition is currently in force (effective 1 January 2014) and vendor/registry entries list it as active; check the national standards registry or Rosstandart notices for any amendments or future updates beyond this summary.

Q: Is it part of a series?

A: It is a standalone GOST for column apparatus but is intended to be used together with other GOSTs and national rules on strength calculation, pressure vessels and industrial safety; relevant standards are listed in its normative references.

Q: What are the key keywords?

A: Column apparatus, trays, packings, heat‑and mass‑transfer, fabrication tolerances, welding, testing, acceptance.