BS EN ISO 23251:2020

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Petroleum, petrochemical and natural gas industries. Pressure-relieving and depressuring systems

Published By	Publication Date	Number of Pages
BSI	2020	16

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Categories: 75.180.20 - Processing equipment, BSI

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PDF Pages

PDF Title

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European foreword
Endorsement notice

Foreword

Introduction

1 Scope
2 Normative references
3 Terms and definitions

4 Supplements to API Std 521, 6th edition (2014)
4.1 General requirements
4.2 Chemical reaction
4.3 Fires

4.4 Causes for vacuum
4.5 Considerations for individual PRDs
4.5.1 General
4.5.2 Multiple PRDs
4.6 Piping
4.6.1 General
4.6.2 Backpressure
4.6.3 Line sizing
4.6.4 Multiple relief scenarios
4.6.5 Reaction forces

4.7 Disposal to flare
4.7.1 General
4.7.2 Combustion properties
4.7.3 Combustion methods
4.7.4 Flare systems designs
4.7.5 Sizing
4.7.6 Ignition of flare gases
4.7.7 Liquid seal drum drums
4.8 Single PRD protecting several components in a process system

Bibliography

Status	Under Review
Pages	16
Publication Date	2020-11-27
ISBN	978 0 580 52437 0
Standard Number	BS EN ISO 23251:2020
Title	Petroleum, petrochemical and natural gas industries. Pressure-relieving and depressuring systems
Identical National Standard Of	ISO 23251, EN ISO 23251:2020
Replaces	BS EN ISO 23251:2007+A1:2008
Descriptors	Relief valves, Natural gas, Petroleum, Chemical industry, Refineries, Natural gas extraction, Petroleum technology, Valves, Pressure regulators, Pressure, Vapour pressure, Pressure control
Publisher	BSI
Committee	PSE/17/-/6
ICS Codes	75.180.20 - Processing equipment


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BS EN ISO 23251:2020

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