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CEN

EN 334:2005/prA1

(Amendment)

Gas pressure regulators for inlet pressures up to 100 bar

Gas pressure regulators for inlet pressures up to 100 bar

Tolerance of 9 months requested before UAP per CEN/TC 235 C02/2006.

Gas-Druckregelgeräte für Eingangsdrücke bis 100 bar

Appareils de régulation de pression de gaz (régulateurs) pour des pressions amont jusqu'à 100 bar

Regulatorji tlaka plina za vstopne tlake do 100 bar - Dopolnilo A1

General Information

Status
Not Published
ICS
23.060.40 - Pressure regulators
Technical Committee
CEN/TC 235 - Gas pressure regulators and associated safety devices for use in gas transmission and distribution
Drafting Committee
CEN/TC 235/WG 1 - Safety shut-off devices, safety relief devices and small regulators with or without safety devices used in gas transmission and/or distribution.
Current Stage
5060 - Closure of Vote - Formal Approval
Start Date
07-Nov-2008
Completion Date
07-Nov-2008
Directive
97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
Mandate
M/071 - Mandate to CEN for standardization in the field of Pressure equipment
Ref Project
SIST EN 334:2005/kprA1:2008 - Gas pressure regulators for inlet pressures up to 100 bar

Relations

Merged Into
EN 334:2005+A1:2009 - Gas pressure regulators for inlet pressures up to 100 bar
Effective Date
18-Jan-2023
Amends
EN 334:2005 - Gas pressure regulators for inlet pressures up to 100 bar
Effective Date
22-Dec-2008

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 334:2005/kprA1:2008
01-oktober-2008
Regulatorji tlaka plina za vstopne tlake do 100 bar - Dopolnilo A1
Gas pressure regulators for inlet pressures up to 100 bar
Gas-Druckregelgeräte für Eingangsdrücke bis 100 bar
Appareils de régulation de pression de gaz (régulateurs) pour des pressions amont
jusqu'à 100 bar
Ta slovenski standard je istoveten z: EN 334:2005/prA1
ICS:
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
SIST EN 334:2005/kprA1:2008 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 334:2005/kprA1:2008

---------------------- Page: 2 ----------------------

SIST EN 334:2005/kprA1:2008
EUROPEAN STANDARD
FINAL DRAFT
EN 334:2005
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
August 2008
ICS 23.060.40

English Version
Gas pressure regulators for inlet pressures up to 100 bar
Appareils de régulation de pression de gaz (régulateurs) Gas-Druckregelgeräte für Eingangsdrücke bis 100 bar
pour des pressions amont jusqu'à 100 bar
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 235.
This draft amendment A1, if approved, will modify the European Standard EN 334:2005. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment 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 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.
: This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
Warning
shall not be referred to as a European Standard.
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 334:2005/prA1:2008: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 334:2005/kprA1:2008
EN 334:2005/prA1:2008
Contents Page
Foreword .3
1 Modification to Foreword .4
2 Modification to Clause 1, Scope .4
3 Modification to Clause 2, Normative reference.5
4 Modification to Clause 3, Terms, definition and symbols.7
5 Modification to 4.1, Basic requirements .11
6 Modification to 4.2, Materials .14
7 Modification to 4.3, Strength of housings .16
8 Modification to Clause 5, Functional requirements.19
9 Modification to 7.7, Test and verification methods .19
10 Modification to 8.1.1, Documentation required prior to type test .22
11 Modification to 8.2.2, Documentation provided with the regulator.22
12 Modification to 9.1, General requirements .22
13 Modification to Annex A, Alternative methods for the determination of the accuracy class,
the lock-up pressure class, the maximum accuracy flow rate, the flow coefficients and the
verification of the hysteresis band.22
14 Modification to Annex B, Inspection certificate.
...

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This document specifies constructional, functional, testing marking and sizing requirements and documentation of gas safety shut-off devices:
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This European Standard specifies constructional, functional, testing, marking, sizing and documentation requirements of gas pressure regulators:
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-   for an operating temperature range from - 20  °C to +60 °C,
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This document considers the following temperature classes/types of regulators:
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The normative Annex G of this document lists some suitable materials for pressure bearing parts, inner metallic partition walls, auxiliary devices, integral process and sensing lines, connectors and fasteners. Other materials may be used when complying with the restrictions given in Table 5.
Continued integrity of gas pressure regulators is ensured by suitable surveillance checks and maintenance. For periodic functional checks and maintenance it is common to refer to national regulations/standards where existing or users/manufacturers practices.
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This European Standard specifies constructional, functional, testing, marking, sizing and documentation requirements of gas pressure regulators:
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which operate with fuel gases of the 1st and 2nd family as defined in EN 437, used in the pressure regulating stations in accordance with EN 12186 or EN 12279, in transmission and distribution networks and also in commercial and industrial installations.
"Gas safety shut-off devices" will hereafter be called "SSDs" except in titles.
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The material and functional requirements specified in this document may be applied to SSDs which use thermal energy or the effects of electrical energy to trip the operation of the closing member. For these SSDs the operational parameters are not specified in this document.
The SSD may incorporate a vent limiter, complying with the requirements in Annex J.
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Continued integrity of safety shut-off devices is ensured by periodic functional checks. For periodic functional checks it is common to refer to national regulations/standards where existing or users/manufacturers practices.
This document considers the reaction of the SSDs functional class A to the specified reasonable expected failures in terms of "fail close" behaviour, but it should be consider that there are other types of failures whose consequences cannot bring to the same reactions (these risks are covered via redundancy as per EN 12186) and that residual hazards should be reduced by a suitable surveillance in use / maintenance.
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