EN 12583:2022

• Abstract:

  This document describes the specific functional requirements for the design, construction, operation, maintenance and disposal activities for safe and secure gas compressor stations.; This document applies to new gas compressor stations with a Maximum Operating Pressure (MOP) over 16 bar and with a total shaft power over 1 MW. For existing compressor stations, this document applies to new compressor units. Where changes/modifications to existing installations or gas composition take place, due account can be taken of the requirements of this document.; This document does not apply to gas compressor stations or compressor units operating prior to the publication of this document. For existing sites this document can be used as guidance. ; The purpose of this document is to:; — ensure the health and safety of the public and all site personnel;; — cover environmental issues;; — avoid incidental damage to nearby property; and; — open the gas infrastructure to accommodate renewable gases, including a possible design for hydrogen.; This document specifies common basic principles for the gas infrastructure. Users of this document are expected to be aware that more detailed national standards and/or codes 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 document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts). CEN/TR 13737 (all parts) 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.; This document does not apply to:; — off-shore gas compressor stations;; — gas compressor stations for compressed gas filling-stations;; — customer installations downstream of the point of custody transfer;; — design and construction of driver packages (see Annex C);; — mobile compressor equipment.; For supplies to utility services such as small central heating boilers reference is made to EN 1775.; Figure 1 shows a schematic representation of compressor stations in a gas infrastructure. For further information refer to Annexes A, B, C, D, E and F.; [Figure 1]

• Status: Withdrawn
• Publication Date: 17-May-2022
• Withdrawal Date: 16-Sep-2026
• ICS: 23.140 - Compressors and pneumatic machines
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: CEN/TC 234 - Gas infrastructure
• Drafting Committee: CEN/TC 234/WG 7 - Gas compression
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 13-Nov-2024
• Completion Date: 17-Sep-2026
• Mandate: M/017 - Standardization mandate to CEN in the field of equipment and installation for the transmission and distribution of gas
• Ref Project: SIST EN 12583:2022 - Gas Infrastructure - Compressor stations - Functional requirements

• Replaces: EN 12583:2014 - Gas Infrastructure - Compressor stations - Functional requirements
• Effective Date: 25-May-2022
• Merged Into: EN 12583:2022+A1:2024 - Gas Infrastructure - Compressor stations - Functional requirements
• Effective Date: 09-Jul-2024
• Refers: ISO 13707:2000 - Petroleum and natural gas industries — Reciprocating compressors
• Effective Date: 25-Aug-2026
• Refers: ISO 3977-2:1997 - Gas turbines — Procurement — Part 2: Standard reference conditions and ratings
• Effective Date: 25-Aug-2026
• Refers: ISO 3977-1:1997 - Gas turbines — Procurement — Part 1: General introduction and definitions
• Effective Date: 25-Aug-2026
• Refers: EN 61508-4:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 4: Definitions and abbreviations
• Effective Date: 09-Feb-2026
• Refers: EN 61508-6:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 6: Guidelines on the application of IEC 61508-2 and IEC 61508-3
• Effective Date: 09-Feb-2026
• Refers: EN 61508-1:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements
• Effective Date: 09-Feb-2026
• Refers: EN 61508-2:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems
• Effective Date: 09-Feb-2026
• Refers: EN 61511-2:2017 - Functional safety - Safety instrumented systems for the process industry sector - Part 2: Guidelines for the application of IEC 61511-1
• Effective Date: 09-Feb-2026
• Refers: EN 61511-1:2017 - Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming Requirements
• Effective Date: 09-Feb-2026
• Refers: EN 61511-1:2017/A1:2017 - Functional safety - Safety instrumented systems for the process industry sector - Part 1: Framework, definitions, system, hardware and application programming Requirements
• Effective Date: 09-Feb-2026
• Refers: EN 61508-7:2010 - Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 7: Overview of techniques and measures
• Effective Date: 09-Feb-2026
• Refers: EN 61511-3:2017 - Functional safety - Safety instrumented systems for the process industry sector - Part 3: Guidance for the determination of the required safety integrity levels
• Effective Date: 09-Feb-2026
• Refers: EN IEC 61000-6-2:2019 - Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity standard for industrial environments
• Effective Date: 09-Feb-2026

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN 12583:2014
Infrastruktura za plin - Kompresorske postaje - Funkcionalne zahteve
Gas Infrastructure - Compressor stations - Functional requirements
Gasinfrastruktur - Verdichterstationen - Funktionale Anforderungen
Infrastructures gazières - Stations de compression - Prescriptions fonctionnelles
Ta slovenski standard je istoveten z: EN 12583:2022
ICS:
23.140 Kompresorji in pnevmatični Compressors and pneumatic
stroji machines
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.

EN 12583
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 23.140; 75.200 Supersedes EN 12583:2014
English Version
Gas Infrastructure - Compressor stations - Functional
requirements
Infrastructures gazières - Stations de compression - Gasinfrastruktur - Verdichterstationen - Funktionale
Prescriptions fonctionnelles Anforderungen
This European Standard was approved by CEN on 20 March 2022.

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-CENELEC 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-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, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 12583:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 5
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
4 Safety . 16
5 Asset management and quality assurance . 16
6 Environmental constraints . 17
6.1 General. 17
6.2 NOx and CO determination . 17
6.2.1 General. 17
6.2.2 Periodic measurements . 17
6.2.3 Continuous Emission Monitoring System (CEMS) . 17
6.2.4 Predictive Emission Monitoring System (PEMS) . 17
6.3 Methane emission management . 18
6.3.1 General. 18
6.3.2 Design phase . 18
6.3.3 Construction, commissioning and decommissioning . 19
6.3.4 Operation and maintenance . 19
7 Design, construction . 19
7.1 General requirements for design . 19
7.1.1 General. 19
7.1.2 Safety and the environment . 20
7.2 Location and station lay-out . 21
7.2.1 Location . 21
7.2.2 Station lay-out . 21
7.3 Pipework . 23
7.3.1 Design considerations . 23
7.3.2 Gas Valves . 23
7.3.3 Gas cleaning . 23
7.3.4 Gas coolers. 24
7.3.5 Pressure reduction stations . 24
7.3.6 Recycle line . 24
7.3.7 Vent systems . 24
7.3.8 Station isolation system . 24
7.3.9 Corrosion protection . 24
7.3.10 Services pipework . 25
7.3.11 Standard colour code . 25
7.4 Compressor unit . 25
7.4.1 General. 25
7.4.2 Driver . 25
7.4.3 Compressor . 26
7.4.4 Unit Control System (UCS) . 27
7.4.5 Unit auxiliary equipment . 31
7.4.6 Foundations . 35
7.4.7 Compressor unit housing . 35
7.5 Station control and automation . 36
7.5.1 Station Control System (SCS) . 36
7.5.2 Station emergency shutdown systems . 36
7.5.3 Gas detection system . 37
7.5.4 Fire protection system . 37
7.5.5 Station valve control and supervision . 37
7.5.6 Over-pressure protection system . 37
7.5.7 Over-temperature protection system . 38
7.6 Electrical installation and power supply . 38
7.6.1 General . 38
7.6.2 Electrical power supply . 38
7.6.3 Electrical installation . 38
7.6.4 Illumination requirements . 38
7.7 General requirements for construction . 39
7.7.1 General . 39
7.7.2 Execution of work . 39
7.7.3 Station pipework construction . 39
8 Testing, commissioning and acceptance . 39
8.1 General requirements . 39
8.2 Pre-commissioning . 39
8.3 Commissioning . 39
8.4 As built records of the station . 40
8.5 Handover . 40
8.6 Responsibility for safety . 40
9 Operation . 41
9.1 Introduction and basic requirements . 41
9.2 Operating organization . 41
9.3 Instruction procedures . 41
9.3.1 General . 41
9.3.2 Instructions for normal situations . 41
9.3.3 Instructions for failure or emergency situations . 42
9.3.4 Procedures for specific planned situations . 42
9.4 Management of operating procedures . 43
9.5 Training of personnel . 43
9.6 Safety precautions . 43
9.6.1 Prevention of gas explosion and fire . 43
9.6.2 Storage of combustible materials . 43
9.6.3 Venting. 44
9.6.4 IT-Security . 44
10 Maintenance . 44
10.1 Introduction and basic requirements . 44
10.2 Maintenance organization . 44
10.3 Maintenance procedures . 45
10.3.1 General . 45
10.3.2 Gas compressor units . 45
10.3.3 Pipework . 45
10.4 Management of the maintenance procedures . 46
10.5 Training of personnel . 46
10.6 Maintenance tools and equipment . 46
10.7 Safety . 46
10.7.1 General . 46
10.7.2 Safety precautions . 47
10.7.3 Safety devices . 47
11 Decommissioning and disposal . 48
11.1 Decommissioning . 48
11.2 Disposal . 48
Annex A (informative) Boundary of a gas compressor station. 49
Annex B (informative) Parts of a gas compressor unit. 51
Annex C (informative) Boundary Gas compressor unit — Driver package . 52
Annex D (informative) Boundary Gas compressor unit — Gas compressor . 53
Annex E (informative) Boundary Gas compressor unit — Unit control system . 54
Annex F (informative) Boundary Gas compressor unit — Auxiliary equipment . 55
Annex G (informative) Significant technical changes between this document and the
previous edition . 56
Annex H (normative) Applicable measurement systems for NOx and CO determination . 57
Annex I (informative) Examples of PEMS and quality insurance applications . 59
I.1 Predictive Emission Monitoring System (PEMS), a relational model: quality criteria
implementation: . 59
I.1.1 General. 59
I.1.2 QAL 1, design part . 59
I.1.3 QAL 2 calibration and functional test (installation) . 61
I.1.4 QAL 3, drift and precision control in operation . 61
I.1.5 AST Annual Survey Test . 61
I.2 An example of a polynomial model for PEMS for gas fired conventional turbines /
engines: . 61
Annex J (informative) Categories of methane emissions . 63
Bibliography . 64
European foreword
This document (EN 12583:2022) has been prepared by Technical Committee CEN/TC 234 “Gas
Infrastructure”, the secretariat of which is held by DIN.
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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12583:2014.
In comparison with the previous edition, the following technical modifications have been made:
— addition of requirements for hydrogen readiness;
— addition of Methane Emissions Management;
— addition of NOx and CO determination;
— addition of references to new European Standards, for example EN 17649 ;
— updated normative references;
— updated with practical experience from the application of the previous edition;
— clarification of technical wording.
A detailed overview of all changes is given in Annex G.
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association.
There is a complete suite of functional standards prepared by CEN/TC 234 “Gas infrastructure” to cover
all parts of the gas infrastructure from the input of gas into the onshore transmission network up to the
inlet connection of gas appliances, including transmission, distribution, storage, compression, pressure
regulation and metering, installation, injection of non-conventional gases, gas quality issues and others.
In preparing this document a basic understanding of gas infrastructure by the user has been assumed.
The gas infrastructure is complex and the importance on safety of its construction and use has led to the
development of very detailed codes of practice and operating manuals in the member countries. These
detailed statements embrace recognized standards of gas engineering and the specific requirements
imposed by the legal structures of the member countries.
Directive 2009/73/EC concerning common rules for the internal market in natural gas and the related
Regulation (EC) No 715/2009 on conditions for access to the natural gas transmission networks also
aim at technical safety (security) including technical reliability of the European gas system. These

Under preparation. Stage at the time of publication: FprEN 17649.
aspects are also in the scope of CEN/TC 234 standardization. In this respect CEN/TC 234 evaluated the
indicated EU legislation and amended this document accordingly, where required and appropriate.
In this edition of EN 12583 environmental aspects relevant to the design, construction and testing,
operation and maintenance, decommissioning and disposal of compressor stations in the scope of this
document are covered in accordance with CEN Guide 4 and CEN/TR 16388.
Directive 2009/28/EC on the promotion of the use of energy from renewable sources and amending
and subsequently repealing Directives 2001/77/EC and 2003/30/EC, in Articles 3 and 5 are with
regard to the calculation of the share of energy from renewable sources and the contribution of
hydrogen originating from renewable sources in the total fuel mix. In this respect CEN/TC 234
evaluated the indicated EU legislation and amended this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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, Turkey and the
United Kingdom.
1 Scope
This document describes the specific functional requirements for the design, construction, operation,
maintenance and disposal activities for safe and secure gas compressor stations.
This document applies to new gas compressor stations with a Maximum Operating Pressure (MOP)
over 16 bar and with a total shaft power over 1 MW. For existing compressor stations, this document
applies to new compressor units. Where changes/modifications to existing installations or gas
composition take place, due account can be taken of the requirements of this document.
This document does not apply to gas compressor stations or compressor units operating prior to the
publication of this document. For existing sites this document can be used as guidance.
The purpose of this document is to:
— ensure the health and safety of the public and all site personnel;
— cover environmental issues;
— avoid incidental damage to nearby property; and
— open the gas infrastructure to accommodate renewable gases, including a possible design for
hydrogen.
This document specifies common basic principles for the gas infrastructure. Users of this document are
expected to be aware that more detailed national standards and/or codes 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 document, the national legislation/regulation takes precedence as
illustrated in CEN/TR 13737 (all parts). CEN/TR 13737 (all parts) 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.
This document does not apply to:
— off-shore gas compressor stations;
— gas compressor stations for compressed gas filling-stations;
— customer installations downstream of the point of custody transfer;
— design and construction of driver packages (see Annex C);
— mobile compressor equipment.
For supplies to utility services such as small central heating boilers reference is made to EN 1775.
Figure 1 shows a schematic representation of compressor stations in a gas infrastructure. For further
information refer to Annexes A, B, C, D, E and F.
Key
1 compressor station 4 pig traps
2 distribution system 5 transmission line
3 metering and/or pressure limiting or regulation station 6 storage facility
* part of pipeline but operated by safety control systems
NOTE Parts indicated in frames by thick lines are within the scope of this document.
Figure 1 — Schematic representation of compressor stations in the gas infrastructure
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1012-3, Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
EN 14181, Stationary source emissions - Quality assurance of automated measuring systems
EN 1594, Gas infrastructure - Pipelines for maximum operating pressure over 16 bar - Functional
requirements
EN 12186, Gas infrastructure - Gas pressure regulating stations for transmission and distribution -
Functional requirements
EN 12266-1, Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and
acceptance criteria - Mandatory requirements
EN 12266-2, Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance
criteria - Supplementary requirements
EN 12732, Gas infrastructure — Welding steel pipework — Functional requirements
EN 14505, Cathodic protection of complex structures
EN 60079-20-1, Explosive atmospheres — Part 20-1: Material characteristics for gas and vapour
classification — Test methods and data
EN IEC 61000-6-2, Electromagnetic compatibility (EMC) - Part 6-2: Generic standards – Immunity
standard for industrial environments
EN 61000-6-4, Electromagnetic compatibility (EMC) - Part 6-4: Generic standards - Emission standard for
industrial environments
EN 61508 (all parts), Functional safety of electrical/electronic/programmable electronic safety-related
systems
EN 61511 (all parts), Functional safety - Safety instrumented systems for the process industry sector
EN ISO 10437, Petroleum, petrochemical and natural gas industries - Steam turbines - Special-purpose
applications (ISO 10437)
EN ISO 10439 (all parts), Petroleum, chemical and gas service industries - Axial and centrifugal
compressors and expander-compressors - Part 4: Expander-compressors (ISO 10439)
EN ISO 13849-1, Safety of machinery - Safety-related parts of control systems - Part 1: General principles
for design (ISO 13849-1)
ISO 3977-1, Gas turbines — Procurement — Part 1: General introduction and definitions
ISO 3977-2, Gas turbines — Procurement — Part 2: Standard reference conditions and ratings
ISO 13707, Petroleum and natural gas industries — Reciprocating compressors
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
alarm
signal provided to an operator which indicates the approach or the presence of an unwanted event
3.2
availability
ability to be in a state to perform as and when required under given conditions, assuming that the
required external resources are provided
Note 1 to entry: This ability depends on the combined aspects of the reliability, the maintainability and
recoverability of the item and the maintenance supportability.
Note 2 to entry: Required external resources, other than maintenance resources, do not affect the availability of
the item although the item may not be available from the user’s viewpoint.
[SOURCE: EN 13306:2017, 4.7]
3.3
commissioning
activities required to fill pipework, equipment and assemblies with gas for the first time and to perform
test runs to check the system's integrity
3.4
compressor surge
flow and/or pressure instability including reverse flow inside a compressor
3.5
compressor unit
set of driver package, gas compressor, control system and their auxiliary equipment which includes unit
valves and associated pipework to compress gas
Note 1 to entry: See Annex D for boundary definitions.
3.6
compressor unit building
structure where one or more drivers with compressors and auxiliary equipment are installed
Note 1 to entry: Operation and maintenance are normally carried out inside the building.
Note 2 to entry: Temporary partitions could be installed to isolate a compressor unit during maintenance
(see Figure 2).
3.7
compressor unit housing
structure to contain the compressor unit which can consist of compressor unit building, enclosure or a
combination of both
3.8
control room
room housing the control system from which the station personnel can, when necessary, take action on
the process
3.9
decommissioning
activities required to take out of service any pipework, stations, equipment or assemblies filled with gas
and to disconnect them from the system
3.10
design pressure
DP
pressure on which design calculations are based
3.11
design temperature
DT
temperature on which design calculations are based
3.12
disposal
activities to be performed after components of a decommissioned gas compressor station have been
dismantled
3.13
emergency
situation which could affect the safe operation of the gas infrastructure and/or the safety of the
surrounding area, requiring urgent action
3.14
emergency shutdown
ESD
actions, in the event of an emergency, to bring the station and/or the compressor unit(s) into a safe
condition which requires local manual resetting
3.15
enclosure
structure (a close framework) to surround a driver and/or a compressor and some of their auxiliary
equipment in order to protect them from outside influence and avoid possible hazards to personnel
Note 1 to entry: Enclosures could be installed inside the compressor unit building to confine part of a compressor
unit (see Figure 2).
Key
1 enclosure 4 driver
2 building 5 compressor
3 walls or temporary partitions
Figure 2 — Compressor unit housing
3.16
fail-safe system
system where loss of power or actuating fluid to any control element, for example an individual relay,
valve, actuator, etc. or any failure of these to operate when energised, leads to a safe condition
Note 1 to entry: In particular, all fault shutdown systems operate by de-energizing and not energizing
components.
3.17
fuel gas system
system which conditions the fuel gas prior to it entering a gas turbine or gas engine driver package
Note 1 to entry: It can consist of gas filtration, scrubbing, heating, pressure regulating, metering and compression.
3.18
gas
gaseous fuel which is in gaseous state at a temperature of 15 °C under atmospheric pressure
(1,013 25 bar absolute)
3.19
gas compressor station
installation used for:
— transporting gas in pipelines;
— compressing gas from a pipeline to a gas storage facility or vice versa
Note 1 to entry: More than one of the above functions could be performed simultaneously or alternately.
3.20
gas infrastructure
pipeline system including pipework and associated stations or plants for the transmission and
distribution of gas
3.21
hazardous area
area in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to
require special precautions for the construction, installation and use of equipment
[SOURCE: EN 60079-10-1:2015]
3.22
incident
unexpected occurrence which could lead to an emergency situation
3.23
isolation valve
valve which permits isolation of a part or the complete gas compressor station
3.24
maximum incidental pressure
MIP
maximum pressure which a gas system can experience during a short time, limited by the safety devices
3.25
maximum incidental temperature
MIT
maximum temperature which a system can experience during a short time, limited by the safety devices
3.26
maximum operating pressure
MOP
maximum pressure at which a system can be operated continuously under normal conditions
Note 1 to entry: Normal conditions are: no fault in any device or stream.
3.27
maximum operating temperature
MOT
maximum temperature at which a system can be operated continuously under normal conditions
Note 1 to entry: Normal conditions are: no fault in any device or stream.
3.28
occupier
person who manages and controls the work in a compressor station
Note 1 to entry: That person can be a company, an individual manager or the owner.
3.29
operating pressure
OP
pressure which occurs within a system under normal operating conditions
3.30
recycle line
portion of piping to convey gas from the discharge to the suction side of a station or a compressor unit
3.31
redundancy
in an item, existence of more than one means at a given instant of time for performing a required
function
[SOURCE: EN 13306:2017, 4.13, modified − second half of the definition altered]
3.32
reliability
ability of an item to perform a required function under given conditions for a given time interval
Note 1 to entry: It is assumed that the item is in a state to perform as required at the beginning of the time
interval.
Note 2 to entry: Reliability may be quantified as a probability or performance indicators by using appropriate
measures and is then referred to as reliability performance.
Note 3 to entry: In some cases a given number of unit of use can be considered instead of a given time internal
(numbers of cycles, number of running hours, number of km, etc.).
Note 4 to entry: The given conditions may include preventive maintenance actions and operational modes and
conditions.
[SOURCE: EN 13306:2017, 4.1]
3.33
remote control centre
RCC
continuously manned (24 h) operating centre, from which the gas infrastructure, including stations, are
remotely supervised and/or controlled
3.34
services pipework
pipework in which fluids other than the gas are conveyed
EXAMPLE Air, oil, water or steam.
3.35
settling out pressure
SOP
resulting pressure in the pipework and equipment after the compressor station or the compressor
unit(s) are turned off or isolated without depressurization
3.36
unit auxiliary equipment
plant and equipment which supports the driver package and gas compressor
EXAMPLE Electrical power, lighting, gas treatment systems.
3.37
station control system
SCS
system to monitor, control and protect the compressor station and supervises the Unit Control System
(UCS)
Note 1 to entry: In addition, it can interface with the Remote Control Centre (RCC).
3.38
shut down
sequence to put out of operation and isolate
Note 1 to entry: System venting can follow.
3.39
shut off
action to put out of operation and isolate devices or parts of a compressor unit or of a compressor
station
3.40
suction line
pipework upstream of the compressor
3.41
temporary operating pressure
TOP
pressure at which a system can be operated temporarily under control of the regulating devices
3.42
test pressure
TP
pressure at which pressure tests are conducted
3.43
unit control system
UCS
system to start, stop, monitor, control and protect the compressor unit
3.44
vent system
system including pipework, valves, silencer, if any, and stack to convey venting gas to a safe location
4 Safety
The occupier shall have a Safety Management System (SMS) for its gas infrastructure and a Pipeline
Integrity Management System (PIMS) for its gas transmission pipelines. Reference can be made to
EN 16348 or EN 17649 .
Safety aspects relating to the specific requirements of gas compressor stations are covered by this
document. For those aspects not covered by this document, relating to the equipment installed,
reference shall be made to the relevant standards in force.
The safety measures shall be based on the prevention of incidents (deterministic approach) or on
probability considerations. These measures take into account the safety and environmental conditions
existing at the time of construction.
5 Asset management and quality assurance
A management system shall be applied to ensure systematic and coordinated activities and practices
through which the organization optimally and sustainably manages its assets and asset systems, their
associated performance, risks and expenditures over their life cycle for the purpose of achieving the
organisational strategic plan.
A quality system should be applied to all the activities in the application of this document.
Reference can be made to EN ISO 9001 and EN ISO 9004.
6 Environmental constraints
6.1 General
Methods for emissions reduction should be evaluated. In combustion systems, primary dry methods to
avoid pollution production shall be preferred.
Energy conserving approaches should also be considered in order to reduce emissions.
Where there is a potential of leakages or spills of polluting fluids, these shall be protected with non-
penetrating, contamination preventing structures, for instance liquid tight floors and spill basins.
Consideration should be given to the requirements of EN ISO 14001 and EN ISO 50001.
Waste materials (e.g. used oil, filters, chemical waste, packing materials, etc.) should be separated in
accordance with local legislation and be disposed of by certified waste disposal companies or
organizations.
6.2 NOx and CO determination
6.2.1 General
Considering the IED (Industrial Emission Directive), the IED BREF (Best available techniques
REFerences) chapter 10 (Conclusions) and the MCP-directive, the NOx and, to some extent, CO
concentrations in exhaust gases shall be determined either: by Periodic measurements, by a Continuous
Emission Monitoring System (CEMS) or by a Predictive Emission Monitoring System (PEMS).
6.2.2 Periodic measurements
The periodic measurements shall be made in accordance with applicable standard reference methods,
carrying out short measurement campaigns with a temporarily installed certified analyser.
The periodicity can depend on a reference installed thermal power, the installation age and/or the
running hour status.
Under no circumstances should a low running hour unit be started and consequently emit pollutant in
the atmosphere, solely for emission measurement purposes.
During site construction (new site) or stack renewal, EN 15259 should be applied to ensure the proper
measurement point arrangement is achieved with the adequate and safe accessibility.
6.2.3 Continuous Emission Monitoring System (CEMS)
A Continuous Emission Monitoring System (CEMS) is a measuring system permanently installed on site
for continuous measurement and monitoring of emissions in the e
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