Standard

BS EN 1594:2024

Gas infrastructure. Pipelines for maximum operating pressure over 16 bar. Functional requirements

Current, Under Review

•

Published:

31 Mar 2024

1 Scope

This document describes the functional requirements for pipelines for maximum operating pressure over 16 bar. This document also describes the mechanical requirements for pipework in stations with a maximum operating pressure greater than 16 bar.

NOTE 1 Welding requirements are described in EN 12732. Functional requirements for stations are given in EN 1776, EN 1918‑5, EN 12186, and EN 12583.

This document is applicable for transporting gas via onshore high-pressure steel pipeline infrastructures, where the following applies:

— onshore:
- — from the point where the pipeline first crosses what is normally accepted as battery limit between onshore and offshore, and that is not located within commercial or industrial premises as an integral part of the industrial process on these premises except for any pipelines and facilities supplying such premises;
- — pipeline system with a starting point onshore, also when parts of the pipeline system on the mainland subsequently cross fjords, lakes, etc.;
— high pressure: gas with a maximum operating pressure over 16 bar and a design temperature between −40 °C and 120 °C;
— steel pipeline infrastructure: infrastructure consisting of pipeline components, such as pipes, valves, couplings and other equipment, restricted to components made of unalloyed or low alloyed carbon steel and joined by welds, flanges or mechanical couplings;
— gas: non-corrosive natural gas, biomethane gas, hydrogen gas and mixtures of these gases where technical evaluation has ensured that operating conditions or constituents or properties of the gas do not affect the safe operation of the pipeline.

Gas infrastructures covered by this document begin after the gas producer's metering station.

NOTE 2 The functional demarcation of the pipeline system is usually directly after an isolating valve of the installation, but can differ in particular situations. The functional demarcation of the pipeline system is usually located on an isolating valve of the installation, but can differ in particular situations.

A schematic representation of pipelines for gas infrastructure is given in Figure 1.

This document can also be applied to the repurposing of existing pipelines.

Figure 1 — Schematic representation of pipelines for gas supply over 16 bar

Key

Symbols		Stations
	pipelines covered by this document	1	P – well, production
	pipelines not covered by this document	2	T – treatment
	pressure regulation	3	D – odorization
	pressure safety system	4	S 1 – gas receiving
	metering, gas analysis and sampling system	5	S 2 – valve station
	compression	6	S 3 – delivery station
	valve	7	S 4 – compressor station
	isolation device	8	S 5 – other supply (e.g. for blending)
		9	S 6 – export or import (e.g. storage and neighbouring network)
		10	S 7 – pressure regulating
		11	S 8 – domestic distribution
		12	S 9 – industrial distribution
		13	S 10 – storage

This document specifies common basic principles for gas infrastructure. Users of this standard are expected to be aware that more detailed national standards and/or code of practice can exist in the CEN member countries.

This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles.

In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this standard, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737.

CEN/TR 13737 gives:

— clarification of all legislations/regulations applicable in a member state;
— if appropriate, more restrictive national requirements;
— a national contact point for the latest information.

Product Details

Descriptors

Pressure

Pipelines

Safety measures

Steels

Temperature

Low-carbon steels

Gas pipelines

Gas technology

Design

Natural gas

Gas supply

Unalloyed steels

Gas pipes

Pipeline transportation

ICS Codes

23.040.01 Pipeline components and pipelines in general

75.200 Petroleum products and natural gas handling equipment

Committee

GSE/33

International relationships

Identical to:

EN 1594

ISBN

978 0 539 18941 4

Publisher

BSI