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prEN 12186

(Main)

Gas infrastructure - Gas pressure control stations for transmission and distribution - Functional requirements

Gas infrastructure - Gas pressure control stations for transmission and distribution - Functional requirements

This European Standard contains the relevant functional requirements for gas pressure regulating stations, which form part of gas transmission or distribution systems. It is applicable to the design, materials, construction, testing, operation and maintenance of gas pressure regulating stations.
This European Standard does not apply to gas pressure regulating stations commissioned prior to the publication of this standard.
The stations covered by this European Standard have a maximum upstream operating pressure which does not exceed 100 bar. For higher maximum upstream operating pressures this standard should be used as a guideline.
If the inlet pipework of the station is a service line and the maximum upstream operating pressure does not exceed 16 bar and the design flow rate is equal to or less than 200 m3/h under normal conditions, EN 12279 applies.
Basic system requirements for gas pressure regulating stations are contained in this European Standard. Requirements for individual components (valves, regulators, safety devices, pipes, etc.) or installation of the components are contained in the appropriate European Standards.
NOTE   For combined regulating and measuring stations, the additional requirements of EN 1776 can apply.
The requirements in this European Standard do not apply to the design and construction of auxiliary facilities such as sampling, calorimetering, odorization systems and density measuring. These facilities are covered by the appropriate European Standards, where existing, or other relevant standards.
The requirements of this European Standard are based on good gas engineering practice under conditions normally encountered in the gas industry. Requirements for unusual conditions cannot be specifically provided for, nor are all engineering and construction details prescribed.
The requirements in this European Standard are based on the physical and chemical data of gaseous fuels – including non-conventional gases – in accordance with Table 1 of EN 437:2003+A1:2009 for first and second family gases. Additional requirements in the case of gaseous fuels heavier than air and/or sour gases are not covered by this European Standard.
The objective of this European Standard is to ensure the safe operation of such stations. This does not, however, relieve all concerned of the responsibility for taking the necessary care and applying effective quality management during the design, construction and operation.

Gasinfrastruktur - Gas-Druckregelanlagen für Transport und Verteilung - Funktionale Anforderungen

Infrastructures gazières - Postes de détente régulation de pression de gaz pour le transport et la distribution - Prescriptions fonctionnelles

Infrastruktura za plin - Plinske postaje za regulacijo tlaka za prenos in distribucijo - Funkcionalne zahteve

General Information

Status
Not Published
Publication Date
02-Aug-2026
ICS
23.060.40 - Pressure regulators
27.060.20 - Gas fuel burners
75.200 - Petroleum products and natural gas handling equipment
Technical Committee
CEN/TC 234 - Gas infrastructure
Drafting Committee
CEN/TC 234/WG 6 - Gas Regulation
Current Stage
4010 - Start of draft translation - Enquiry
Start Date
21-Nov-2024
Due Date
21-Nov-2024
Completion Date
21-Nov-2024
Mandate
M/017 - Standardization mandate to CEN in the field of equipment and installation for the transmission and distribution of gas
Ref Project
oSIST prEN 12186:2025 - Gas infrastructure - Gas pressure control stations for transmission and distribution - Functional requirements

Relations

Revises
EN 12186:2014 - Gas infrastructure - Gas pressure regulating stations for transmission and distribution - Functional requirements
Effective Date
08-Apr-2024

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Standards Content (Sample)


SLOVENSKI STANDARD
01-februar-2025
Infrastruktura za plin - Plinske postaje za regulacijo tlaka za prenos in distribucijo -
Funkcionalne zahteve
Gas infrastructure - Gas pressure control stations for transmission and distribution -
Functional requirements
Gasinfrastruktur - Gas-Druckregelanlagen für Transport und Verteilung - Funktionale
Anforderungen
Infrastructures gazières - Postes de détente régulation de pression de gaz pour le
transport et la distribution - Prescriptions fonctionnelles
Ta slovenski standard je istoveten z: prEN 12186
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
75.200 Oprema za skladiščenje Petroleum products and
nafte, naftnih proizvodov in natural gas handling
zemeljskega plina equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 23.060.40; 27.060.20; 75.200 Will supersede EN 12186:2014
English Version
Gas infrastructure - Gas pressure control stations for
transmission and distribution - Functional requirements
Infrastructures gazières - Postes de détente régulation Gasinfrastruktur - Gas-Druckregelanlagen für
de pression de gaz pour le transport et la distribution - Transport und Verteilung - Funktionale Anforderungen
Prescriptions fonctionnelles
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 234.
If this draft becomes a European Standard, 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.

This draft European Standard 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12186:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, symbols and abbreviations . 8
3.1 General . 9
3.2 Station . 9
3.3 Pressure, design and testing . 11
3.4 Pressure control . 13
3.5 Smart technologies . 14
4 Quality and safety management system . 15
5 Environmental interaction . 15
5.1 General requirements . 15
5.2 Waste . 15
5.3 Greenhouse gas emissions . 15
5.4 Adaptation to the effects of climate change . 17
5.4.1 General . 17
5.4.2 Design phase . 17
5.4.3 Construction, Commissioning and Decommissioning . 17
5.4.4 Operation and maintenance . 17
5.5 Mitigation of the impact of earthquakes . 18
6 Layout of the gas pressure control station . 18
6.1 General . 18
6.2 Layout of the site . 18
6.3 Site security . 18
7 Housings . 19
7.1 General . 19
7.2 Requirements for housings . 19
7.3 Underground stations . 20
7.3.1 General . 20
7.3.2 Stations in a pit . 20
7.3.3 Buried vessel type stations . 21
8 Design of the station and its systems . 21
8.1 General . 21
8.2 Continuity of supply . 22
8.3 Filters, separators . 22
8.4 Gas pre-heating system . 22
8.5 Noise control . 23
8.5.1 General . 23
8.5.2 Environmental acceptance . 23
8.5.3 Work area noise . 23
8.6 Apertures and vent lines . 23
8.6.1 Apertures in pressure control equipment . 23
8.6.2 Vent lines . 23
8.7 Connections for purging, recompression or flaring . 24
8.8 Hazardous areas . 24
8.9 Cathodic protection and electrical isolation system . 24
8.10 Lightning protection, electric continuity and earthing . 24
8.11 Pressure control system. 25
8.12 Flow-rate control system . 25
8.13 Pipework system. 26
8.14 Welding . 26
8.15 Instrumentation pipework . 26
8.16 Stress analysis . 27
8.16.1 Design pressure . 27
8.16.2 Design factor . 27
8.16.3 Supports . 27
8.16.4 Flexibility . 28
8.16.5 Temperature . 28
8.16.6 Gas velocity . 28
8.17 Standard pressure equipment strength . 28
8.18 Isolating valves . 28
8.19 Smart systems and equipment . 29
8.19.1 General . 29
8.19.2 Fail safe conditions (safety and continuity of supply) . 29
8.20 Electromagnetic compatibility, electrostatic phenomena and personal protection . 29
8.21 Information security. 29
9 Pressure control requirements . 30
9.1 General . 30
9.2 Pressure regulating system . 31
9.3 Pressure safety system . 31
9.3.1 General .
...

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This European Standard does not apply to gas pressure regulating stations commissioned prior to the publication of this standard.
The stations covered by this European Standard have a maximum upstream operating pressure which does not exceed 100 bar. For higher maximum upstream operating pressures this standard should be used as a guideline.
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