EN ISO 25457:2008

Petroleum, petrochemical and natural gas industries - Flare details for general refinery and petrochemical service (ISO 25457:2008)

ISO 25457:2008 specifies requirements and provides guidance for the selection, design, specification, operation and maintenance of flares and related combustion and mechanical components used in pressure relieving and vapour-depressurizing systems for petroleum, petrochemical and natural gas industries.
Although ISO 25457:2008 is primarily intended for new flares and related equipment, it can also be used in the evaluation of existing flare facilities.
Further guidance and best practices are provided for the selection, specification and mechanical details for flares and on the design, operation and maintenance of flare combustion and related equipment.
ISO 25457:2008 also includes a set of data sheets, together with instructions and guidelines, for use in communicating and recording design information.

Erdöl-, petrochemische und Erdgasindustrie - Fackeln für den allgemeinen Betrieb in Raffinerien und petrochemischen Service (ISO 25457:2008)

Industries du pétrole, de la pétrochimie et du gaz naturel - Détails sur les torches d'usage général dans les raffineries et dans les usines pétrochimiques (ISO 25457:2008)

L'ISO 25457:2008 spécifie les exigences et fournit les lignes directrices pour le choix, la conception, les spécifications, le fonctionnement et la maintenance des torches et des composants mécaniques et de combustion associés utilisés dans les systèmes de dépressurisation et de protection contre les surpressions pour les industries du pétrole, de la pétrochimie et du gaz naturel.
Bien que l'ISO 25457:2008 soit avant tout destinée aux nouvelles torches et aux équipements associés, elle peut aussi être utilisée dans l'évaluation d'installations de torches existantes.
Des lignes directrices complémentaires et les meilleures pratiques sont donnée quant au choix, spécifications et détails d'ordre mécanique relatifs aux torches et sur la conception, le fonctionnement et la maintenance des équipements associés et de combustion des torches.
L'ISO 25457:2008 inclut également un ensemble de fiches techniques, conjointement aux instructions et lignes directrices; afin de les tiliser pour communiquer et enregistrer des informations de conception.

Petrokemična industrija ter industrija za predelavo nafte in zemeljskega plina - Podrobnosti o svetilih v rafinerijah in petrokemični industriji (ISO 25457:2008)

General Information

• Status: Withdrawn
• Publication Date: 14-Dec-2008
• Withdrawal Date: 24-Oct-2023
• ICS: 75.180.20 - Processing equipment
• Technical Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Drafting Committee: CEN/TC 12 - Materials, equipment and offshore structures for petroleum and natural gas industries
• Ref Project: SIST EN ISO 25457:2009 - Petroleum, petrochemical and natural gas industries - Flare details for general refinery and petrochemical service (ISO 25457:2008)

Relations

• Replaced By: EN ISO 25457:2023 - Oil and gas industries including lower carbon energy - Flare details for general refinery and petrochemical service (ISO 25457:2023)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2009
3HWURNHPLþQDLQGXVWULMDWHULQGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD
3RGUREQRVWLRVYHWLOLKYUDILQHULMDKLQSHWURNHPLþQLLQGXVWULML,62
Petroleum, petrochemical and natural gas industries - Flare details for general refinery
and petrochemical service (ISO 25457:2008)
Erdöl-, petrochemische und Erdgasindustrie - Fackeln für den allgemeinen Betrieb in
Raffinerien und petrochemischen Service (ISO 25457:2008)
Industries du pétrole, de la pétrochimie et du gaz naturel - Détails sur les torches
d'usage général dans les raffineries et dans les usines pétrochimiques (ISO 25457:2008)
Ta slovenski standard je istoveten z: EN ISO 25457:2008
ICS:
75.180.20 Predelovalna oprema Processing equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 25457
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2008
ICS 75.180.20
English Version
Petroleum, petrochemical and natural gas industries - Flare
details for general refinery and petrochemical service (ISO
25457:2008)
Industries du pétrole, de la pétrochimie et du gaz naturel - Erdöl-, petrochemische und Erdgasindustrie - Fackeln für
Détails sur les torches d'usage général dans les raffineries den allgemeinen Betrieb in Raffinerien und
et dans les usines pétrochimiques (ISO 25457:2008) petrochemischen Service (ISO 25457:2008)
This European Standard was approved by CEN on 11 December 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists 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 CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 25457:2008: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 25457:2008) has been prepared by Technical Committee ISO/TC 67 "Materials,
equipment and offshore structures for petroleum and natural gas industries" in collaboration with Technical
Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, petrochemical and
natural gas industries” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2009, and conflicting national standards shall be withdrawn at
the latest by June 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 25457:2008 has been approved by CEN as a EN ISO 25457:2008 without any modification.

INTERNATIONAL ISO
STANDARD 25457
First edition
2008-12-15
Petroleum, petrochemical and natural gas
industries — Flare details for general
refinery and petrochemical service
Industries du pétrole, de la pétrochimie et du gaz naturel — Détails sur
les torches d'usage général dans les raffineries et dans les usines
pétrochimiques
Reference number
ISO 25457:2008(E)
©
ISO 2008
ISO 25457:2008(E)
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ISO 25457:2008(E)
Contents Page
Foreword .v
Introduction.vi
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Design.8
4.1 Introduction.8
4.2 System design .10
4.3 Process definition .10
4.4 Types of flares .11
4.5 Flare burners.13
4.6 Mechanical design.13
4.7 Pilots.14
4.8 Pilot-ignition systems .16
4.9 Pilot-flame detection .16
4.10 Piping.17
4.11 Auxiliary components.17
5 Mechanical details — Elevated flares.18
5.1 Mechanical design — Design loads .18
5.2 Design details .21
5.3 Materials of construction.22
5.4 Welding.22
5.5 Inspection.23
5.6 Surface preparation and protection .23
5.7 Attachments.23
5.8 Aircraft warning lighting.24
5.9 Platforms and ladders.24
6 Mechanical details — Enclosed-flame flare.25
6.1 Combustion chamber.25
6.2 Burners.25
6.3 Burner piping .26
6.4 Pilots.26
6.5 Wind fence .27
6.6 Radiation shielding .27
Annex A (informative) Flare equipment overview.28
A.1 Types of flares and components .28
A.2 Flare burner.42
A.3 Pilots.53
A.4 Ignition equipment .58
A.5 Flame-detection equipment.68
A.6 Verification test.72
A.7 Purge-gas conservation seals .73
A.8 Knockout drums and liquid seals.75
A.9 Blowers and drivers .76
A.10 Blower staging and control equipment.80
A.11 Pressure-staging equipment.84
A.12 Flow and pressure sensing equipment.88
Annex B (informative) Components of multi-burner staged flare equipment .90
ISO 25457:2008(E)
B.1 Burners .90
B.2 Pilots .91
B.3 Ignition equipment.
...