GOST 34233.5-2017 PDF

Full title and description

GOST 34233.5-2017 — "Vessels and apparatus. Norms and methods of strength calculation. Calculation of shells and heads from influence of support loads." The standard establishes calculation models, formulae and verification procedures for shells and bottoms (heads) of pressure vessels and apparatus where local loads from support elements (lifting lugs, support pads, saddle supports, support legs, baseplates and foundation bolt assemblies) act on the shell or head.

Abstract

This part of the GOST 34233 series defines methods to determine local bending and membrane stresses, reaction forces and bending moments produced by support assemblies; provides calculation schemes for different support types (lugs, pads, saddles, legs, plate supports); gives limits of applicability for analytical formulae and guidance when numerical (FE) methods are required; and includes checks for welds and attachment elements. The document integrates with the general rules of GOST 34233.1 and contains normative annexes with coefficients and example calculation schemes.

General information

• Status: Interstate (GOST) standard adopted as a national standard of the Russian Federation; introduced by Rosstandart order No. 1993-st of 14 December 2017 and put into effect 1 August 2018.
• Publication date: 2017 (officially implemented from 01 August 2018).
• Publisher: Published in print/electronic by Standartinform (Moscow) / official national standards bodies.
• ICS / categories: ICS 71.120 (Boilers and pressure vessels) and related mechanical engineering categories indicated in the standard metadata.
• Edition / version: Designation GOST 34233.5-2017 (original 2017 text with later published amendments noted in official information bulletins).
• Number of pages: Approximately 38 pages (published electronic/print formats commonly listed as 38 pages in standards distribution catalogs).

Scope

Applies to strength (stress) calculations of cylindrical/conical shells and their heads in the regions where support devices impose local static loads. It covers analytical calculation schemes for different support types, determination of support reactions, evaluation of local bending (limit bending stress of a strip‑beam model), membrane stress interaction, and checks of welded attachments and fastening elements. The standard is intended for use in design, verification, testing and mounting conditions for pressure equipment.

Key topics and requirements

• Definition of calculation models for common support types: carrying lugs, support legs (pads and plate legs), saddle supports and support rings.
• Procedure to derive support reaction forces, bending moments and transverse shear in the shell using beam-equivalent schemes and structural mechanics formulas.
• Local limit bending stress concept (strip-beam model) and its formulae linking bending limits with local membrane stresses and allowable material stress.
• Prescribed checks for welded attachments (weld strength and fatigue considerations) and for foundation bolts/fastenings where applicable.
• Tables, coefficients and geometric limits defining applicability ranges of the closed-form formulae; recommendation to use numerical (finite element) methods when element geometry lies outside these limits.

Typical use and users

Used by mechanical and pressure‑equipment designers, calculation engineers, plant integrity and mechanical engineering specialists in oil & gas, petrochemical, power, and process industries; also referenced by testing and certification bodies, and by engineering consultants performing strength verification, erection and testing assessments for pressure vessels and apparatus. The standard is typically applied during design verification, strength recalculation after modification, and when performing mounting/test condition checks.

Related standards

Part of the GOST 34233-2017 series on strength calculation for vessels and apparatus. Closely related parts include GOST 34233.1 (general requirements), 34233.2 (cylindrical and conical shells and bottoms), 34233.3 (reinforcement of openings), 34233.4 (flanges and sealing), 34233.6 (low-cycle loading), 34233.7 (heat exchangers), 34233.9 (column-type apparatus) and other parts in the series; users must apply GOST 34233.1 together with this part for allowable stresses and general calculation principles.

Keywords

pressure vessel; shell; head; support loads; support lugs; saddle support; support leg; foundation bolts; local bending stress; strip-beam model; strength calculation; GOST 34233.1.

FAQ

Q: What is this standard?

A: GOST 34233.5-2017 is a part of the 34233 series of interstate (GOST) standards that sets out norms and analytical methods for strength calculation of shells and heads of pressure vessels where local loads from supports are applied.

Q: What does it cover?

A: It covers analytical calculation models and formulae for different support types (lugs, pads, saddles, legs), determination of reactions, local bending and membrane stress interaction, weld attachment checks and guidance on when to use numerical methods if geometric limits are exceeded.

Q: Who typically uses it?

A: Mechanical designers, pressure‑equipment calculation engineers, certification bodies and plant integrity specialists in industries that design, fabricate, inspect or modify pressure vessels and process apparatus.

Q: Is it current or superseded?

A: The document is the 2017 issue (GOST 34233.5-2017), introduced by Rosstandart order dated 14 December 2017 and effective from 1 August 2018. Official records list published amendments in the national information bulletin (ИУС) affecting the text after initial publication; users should check the national standards registry or publisher bulletins for the latest amendments before applying the standard.

Q: Is it part of a series?

A: Yes — it is one part of the multi‑part GOST 34233-2017 set (parts.1 through.12 and related), which together provide comprehensive rules and methods for strength calculation of boilers, pressure vessels and apparatus.

Q: What are the key keywords?

A: Support loads; support lugs; saddle supports; local bending stress; membrane stress; shell and head calculation; foundation bolts; welded attachments; pressure vessels; GOST 34233.1.