EN 13445-4:2002/prA1

Unfired pressure vessels - Part 4: Fabrication

2007-06-13  Resolution 547 : CEN/TC 54 recommends to CMC to delete the work item for Creep in EN 13445-4:2002 (00054033), as the content has already been published in a previous amendment.

Unbefeuerte Druckbehälter - Teil 4: Herstellung

Récipients sous pression non soumis à la flamme - Partie 4 : Fabrication

Neogrevane tlačne posode - 4. del: Proizvodnja

General Information

• Status: Not Published
• ICS: 23.020.30 - Pressure vessels, gas cylinders
• Technical Committee: CEN/TC 54 - Unfired pressure vessels
• Drafting Committee: CEN/TC 54 - Unfired pressure vessels
• Current Stage: 5098 - Decision to abandon - Formal Approval
• Start Date: 19-Dec-2008
• Completion Date: 14-Apr-2025
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 13445-4:2002/OprA1:2004 - Unfired pressure vessels - Part 4: Fabrication

Overview

EN 13445-4:2002/prA1 is a draft amendment to the European standard EN 13445-4:2002, focusing on the fabrication of unfired pressure vessels. Developed by the Technical Committee CEN/TC 54, this amendment specifically addresses enhancements and clarifications to existing fabrication requirements. While this document is currently under review and not yet a finalized European Standard, it plays a critical role in ensuring the safety, quality, and regulatory compliance of unfired pressure vessels within the European market.

This standard supports the essential requirements of EU Directives and is harmonized across CEN member states, ensuring uniformity in manufacturing practices for unfired pressure vessels and parts. The amendment also considers vessels operating within the creep range, expanding its application to high-temperature pressure vessel fabrication.

Key Topics

• Scope Expansion
  The amendment explicitly includes vessels and vessel parts operating in the creep range, which pertains to materials subjected to long-term elevated temperatures and stress levels. This broadens the standard’s relevance to industries requiring durable pressure vessels under such demanding conditions.

• Fabrication Requirements
  Detailed guidance is provided for the fabrication processes of unfired pressure vessels including:

  • Material selection and verification
  • Welding techniques and inspection criteria
  • Dimensional tolerances and assembly
  • Quality control during manufacturing

• Vessels Made in More Than One Course
  A notable change includes the revision of minimum weld seam height from 10 mm to 100 mm for vessels fabricated in multiple courses, reflecting enhanced safety margins and fabrication precision.

• Compliance with EU Directives
  The standard integrates essential requirements as per the European Commission’s mandates, ensuring legal conformity and facilitating market access across EU and EFTA countries.

Applications

• Pressure Vessel Manufacturing
  This standard is critical for manufacturers of unfired pressure vessels used in chemical plants, refineries, power generation, and other industrial sectors where pressure equipment safety is paramount.

• High-Temperature Service Units
  Vessels subjected to sustained high temperatures, especially within creep conditions, benefit from the standard’s updated fabrication provisions to assure long-term reliability and operational integrity.

• Quality Assurance Programs
  Fabricators and inspectors leverage the standard to establish robust quality assurance protocols covering material handling, welding execution, and final inspection.

• Regulatory Compliance and Certification
  Organizations use EN 13445-4:2002/prA1 as a basis for demonstrating compliance during regulatory assessments and certification processes in European markets.

Related Standards

• EN 13445 Series
  The EN 13445 family covers various aspects of unfired pressure vessel design, fabrication, inspection, and testing:

  • Part 1: General Requirements
  • Part 2: Materials
  • Part 3: Design
  • Part 5: Inspection and Testing
  • Part 6: Requirements for Design and Fabrication of Pressure Vessels and Their Components

• EU Pressure Equipment Directive (PED) 2014/68/EU
  The standard aligns with directives governing the design and manufacture of pressure equipment in the EU.

• ISO 9001 - Quality Management Systems
  Many fabricators align fabrication processes in EN 13445-4 with ISO 9001 requirements to ensure comprehensive quality management.

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Keywords: EN 13445-4, unfired pressure vessels, pressure vessel fabrication, creep range vessels, European Standard, CEN, pressure equipment directive, vessel welding, quality assurance in fabrication, pressure vessel manufacturing standards.

Standards Content (Sample)

SLOVENSKI SIST EN 13445-
4:2002/OprA1:2004
PREDSTANDARD
december 2004
Neogrevane tlačne posode - 4. del: Proizvodnja
Unfired pressure vessels - Part 4: Fabrication
ICS 23.020.30 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD
DRAFT
EN 13445-4:2002
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
September 2004
ICS
English version
Unfired pressure vessels - Part 4: Fabrication
Récipients sous pression non soumis à la flamme –  Unbefeuerte Druckbehälter - Teil 4: Herstellung
Partie 4 : Fabrication
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 54.

This draft amendment A1, if approved, will modify the European Standard EN 13445-4:2002. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.

This draft amendment was established by CEN in three official versions (English, French, German). A version in any other language made
by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status
as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Warning : This document is not a European Standard. It is dis
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