SIST EN ISO 21789:2022
(Main)Gas turbine applications - Safety (ISO 21789:2022)
Gas turbine applications - Safety (ISO 21789:2022)
To deliver an EN ISO version of "ISO 21789 Gas turbine applications - Safety"
To extend the use of the current ISO standard by including details to assist designers, manufacturers and others by providing methods of compliance with the relevant, essential safety requirements of a range of EU Directives for gas turbine applications without prejudicing compliance with the Standard outside of the European Union.
It is proposed that the existing ISO 21789 is used as the basis of an EN ISO standard by revising as necessary such clauses that the resulting standard can be Harmonised against the applicable EU Directives.
To facilitate this, a draft combined ISO21789 / prEN ISO 21789 is proposed as a New Work Item which is to be commented / reviewed in conjunction with a combined ISO/TC192 WG10 and CEN/TC399 WG committee in accordance with the requirements of the Vienna agreement.
The additional Annexes that would be required for prEN ISO 21789 are appended to the draft.
Subsequently ISO 21789 will be updated to include applicable changes made to the new draft with the exception of the references applicable to Harmonisation.
Gasturbinenanwendungen - Sicherheit (ISO 21789:2022)
Diese Internationale Norm behandelt die Sicherheitsanforderungen an für aus Flugtriebwerken abgeleitete und industrielle Gasturbinen-Antriebsaggregate, die flüssige oder gasförmige Brennstoffe verwenden und die sicherheitsbezogenen Steuerungs- und Erkennungssysteme für alle Arten von offenen Kreisläufen (einfach, kombiniert, regenerativ, Zwischenerhitzung usw.) in Onshore- und Offshore-Anwendungen einschließlich schwimmender Produktionsplattformen.
Diese Internationale Norm gilt für mechanische, elektrische und Druckgerätebauteile und -systeme, die für die Funktion des Antriebsaggregats benötigt werden. Sie gilt beispielsweise unter anderem für Hilfsgetriebe für Kernbohrgasturbinen, Abtriebsgetriebe, Verbrennungssysteme, Luftfilter, Gasturbinensteuerungssysteme, Ölsysteme und Brennstoffsysteme. Die Norm behandelt außerdem die Vermeidung von Sicherheitsrisiken in die allgemeine Installation wie etwa Abgasspülung oder entleerung.
Diese Internationale Norm beschreibt die erwarteten signifikanten Gefährdungen in Verbindung mit aus Flugtriebwerken abgeleiteten und industriellen Gasturbinen-Antriebsaggregaten und legt die geeigneten präventiven Maßnahmen und Prozesse zur Reduzierung oder Vermeidung dieser Gefährdungen fest. Diese Internationale Norm behandelt die Verletzungs- und tödlichen Risiken für Personen und die Risiken für die Umwelt. Sachschäden an den Anlagen ohne Risiko für Personen oder die Umwelt werden nicht behandelt.
Gasturbineneinheiten sind allgemein durch Internationale und nationale Normen festgelegt. Die Erreichung von Sicherheit wird durch die Anwendung zusätzlicher Sicherheitsvorschriften und Normen unterstützt, die gemeinsam für Gasturbinen und andere Technologien angewendet werden. Hierbei ist zu beachten, dass lokale gesetzliche Vorschriften in den Ländern, in denen das Gerät in Betrieb genommen werden soll, möglicherweise nicht durch diese Internationale Norm behandelt werden.
Das allgemeine Ziel dieser Internationalen Norm besteht darin, sicherzustellen, dass Geräte über ihre gesamte Lebensdauer in Übereinstimmung mit ISO 12100 gestaltet, konstruiert, betrieben und instandgehalten werden.
Diese Internationale Norm behandelt die Sicherheit von Gasturbinen aus einer internationalen Perspektive soweit wie möglich basierend auf dem Inhalt der bestehenden anerkannten ISO- und IEC-Normen. Wo keine ISO- oder IEC Norm besteht, wurden andere Vorschriften und Normen (wie etwa EN, NFPA usw.) eingebunden. Wo lokale oder nationale gesetzliche Vorschriften keine eingeführten Vorschriften oder Normen zulassen oder alternative oder nationale Normen mit vergleichbaren Anforderungen an die Risikoreduzierung bestehen, ist die Anwendung dieser alternativen Vorschriften oder Normen anstelle der Verweisungen in Abschnitt 2 zulässig.
Diese Internationale Norm schließt die folgenden Aspekte aus:
- strukturelle Gestaltung von Abgasanlagen;
- angetriebene Geräte;
- in ISO 19372 behandelte Mikroturbinen;
- hauptsächlich für den direkten und indirekten Antrieb verwendete Gasturbinen;
- Gasturbinen für mobile Anwendungen;
- spezielle Wärmequellenanwendungen;
- Gasturbinen in Forschungs- und Entwicklungsprogrammen;
- Druckluft-Energiespeicheranlagen.
Diese Internationale Norm kann gegebenenfalls als allgemeine Anleitung für solche Anwendungen genutzt werden.
Dieses Dokument gilt nicht für Maschinen oder Sicherheitsbauteile, die vor dem Datum der Veröffentlichung dieses Dokuments als Internationale Norm hergestellt wurden.
Applications des turbines à gaz - Sécurité (ISO 21789:2022)
Le présent document couvre les exigences de sécurité relatives aux applications de machines d'entraînement à turbine à gaz aérodérivatives et industrielles, utilisant des combustibles liquides ou gazeux, ainsi que les systèmes de commande et de détection relatifs à la sécurité et les dispositifs auxiliaires essentiels pour tous les types de cycles ouverts (simples, combinés, avec récupération, à réchauffement, etc.) utilisés sur des applications à terre et en mer, y compris les plateformes flottantes de production.
Le présent document s'applique aux composants d'équipements mécaniques, électriques et sous pression et aux systèmes nécessaires au bon fonctionnement de la machine d'entraînement. Par exemple, un train d'engrenage auxiliaire de turbine à gaz à cœur, une boîte de transmission de sortie, un système de combustion, un système de filtration d'air, des circuits de commande de turbine à gaz, des circuits d'alimentation en huile et un circuit d'alimentation en combustible, la liste n'étant pas exhaustive. Le présent document couvre également l'intégration des risques pour la sécurité dans l'ensemble de l'installation (par exemple, évacuation de la purge ou de la vidange).
Le présent document détaille les phénomènes dangereux significatifs anticipés liés aux machines d'entraînement à turbine à gaz aérodérivatives et industrielles, et spécifie les mesures et procédés de prévention appropriés permettant de réduire ou d'éliminer ces phénomènes dangereux. Le présent document aborde les risques de blessures ou de mort auxquels sont exposés les êtres humains, ainsi que les risques environnementaux. Les dommages dont font l'objet les équipements et qui ne présentent aucun risque pour les êtres humains ou l'environnement ne sont pas couverts.
Le présent document a pour objectif global de vérifier que l'équipement est conçu, construit, utilisé et entretenu conformément à l'ISO 12100:2010 tout au long de sa durée de vie.
Le présent document aborde la sécurité des turbines à gaz d'un point de vue international, en s'appuyant autant que possible sur le contenu des normes ISO et IEC reconnues déjà existantes. S'il n'existe aucune norme ISO ou IEC, d'autres codes ou normes (EN, NFPA, etc.) ont été inclus.
Les niveaux minimaux de sécurité fonctionnelle ne peuvent pas être abordés dans le présent document, car ils sont spécifiques à l'application et au site.
Le présent document exclut les points suivants:
— la conception de la structure du système d'échappement;
— les équipements entraînés;
— les microturbines couvertes par l'ISO 19372:2015;
— les turbines à gaz utilisées principalement pour la propulsion directe et indirecte;
— les turbines à gaz utilisées pour les applications mobiles;
— les applications spéciales de source de chaleur;
— les turbines à gaz dans les programmes de recherche et développement;
— les installations de stockage d'énergie par air comprimé.
Le cas échéant, le présent document peut être utilisé pour donner des recommandations générales dans le cadre de telles applications.
Le présent document ne s'applique pas aux machines ou composants de sécurité fabriqués avant la date de sa publication.
Uporaba plinske turbine - Varnost (ISO 21789:2022)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 21789:2022
01-december-2022
Uporaba plinske turbine - Varnost (ISO 21789:2022)
Gas turbine applications - Safety (ISO 21789:2022)
Gasturbinenanwendungen - Sicherheit (ISO 21789:2022)
Applications des turbines à gaz - Sécurité (ISO 21789:2022)
Ta slovenski standard je istoveten z: EN ISO 21789:2022
ICS:
27.040 Plinske in parne turbine. Gas and steam turbines.
Parni stroji Steam engines
SIST EN ISO 21789:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 21789:2022
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SIST EN ISO 21789:2022
EN ISO 21789
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 27.040
English Version
Gas turbine applications - Safety (ISO 21789:2022)
Applications des turbines à gaz - Sécurité (ISO Gasturbinenanwendungen - Sicherheit (ISO
21789:2022) 21789:2022)
This European Standard was approved by CEN on 24 June 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, Türkiye 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 ISO 21789:2022 E
worldwide for CEN national Members.
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 4
Annex ZB (informative) Relationship between this European Standard and the essential
requirements of EU Directive 2014/34/EU . 6
2
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
European foreword
This document (EN ISO 21789:2022) has been prepared by Technical Committee ISO/TC 192 "Gas
turbines" in collaboration with Technical Committee CEN/TC 399 “Gas Turbines applications - Safety”
the secretariat of which is held by BSI.
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 April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
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 has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of EU
Directive(s) / Regulation(s).
For the relationship with EU Directive(s) / Regulation(s), see informative Annex ZA and ZB, which is an
integral part of this document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 21789:2022 has been approved by CEN as EN ISO 21789:2022 without any modification.
3
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered
This European Standard has been prepared under a Commission’s standardization request “M/396
Mandate to CEN and CENELEC for Standardisation in the field of machinery" to provide one voluntary
means of conforming to essential requirements of Directive 2006/42/EC of the European Parliament
and of the Council of 17 May 2006 on machinery and amending Directive 95/16/EC (recast).
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and Annex I
of Directive 2006/42/EC
The relevant Essential Clause(s)/sub-clause(s) of this EN Remarks/Notes
Requirements of Directive
2006/42/EC
1.1.2 5.1, 5.2, 5.5, 5.8, 7.5.2, 7.6.2, 7.7.1
1.1.3 5.23.8.4, 5.24.3, 7.7.8
1.1.4 5.14, 5.15.9, 7.6.4
1.1.5 5.8.5
1.1.6 5.20.3
1.2.2 5.20.2, 5.20.8, 7.6.4
1.2.4.1 5.20.8
1.2.4.3 5.20.8
1.2.4.4 5.20.8
1.2.6 5.20.4, 5.20.8, 5.21.9.2, 5.21.2, 7.7.3
1.3.1 5.8.5, 7.7.1
1.3.2 5.8.3, 5.8.9, 5.8.15.1, 5.23.10, 7.5
1.3.3 5.8, 5.20.7, 7.7
1.3.7 5.8.1, 7.7.2
1.4.1 5.8.1.1, 5.8.2
1.4.2.1 5.8.1
1.4.3 Not covered
1.5.1 5.20, 5.21
1.5.2 5.21.3, 7.4
4
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
1.5.3 5.10, 5.21.2, 5.23.8.5, 5.24.3, 5.24.4, 7.7.3
1.5.4 5.8.12, 5.23.8, 7.7.2
1.5.5 5.8.1.2, 5.8.3, 5.8.9, 5.9.3, 5.13.5, 5.16.3
1.5.6 5.15
1.5.7 5.16
1.5.8 5.7
1.5.10 5.20.2
1.5.11 5.15.10, 5.21.6
1.5.13 5.10.5.8, 5.10.6, 5.10.9, 7.7.8
1.5.14 5.13.8, 5.13.9, 5.18.1, 7.6.2, 7.6.4, 7.7.1,
7.8
1.5.15 5.8.2
1.5.16 5.21.5
1.6.2 5.8.2, 7.7
1.6.3 5.21.2.1, 7.7.3
1.6.4 5.2, 5.21, 5.23
1.7.1 7.2, 7.8
1.7.1.1 5.20.3, 7.2
1.7.1.2 5.15.8, 5.20.3, 5.20.8, 7.5.1, 7.7.1, 7.8
1.7.2 5.2, 7.3, 7.8
1.7.3 6.2, 7.8
1.7.4 7.2
1.7.4.1 7
1.7.4.2 7
1.7.4.3 7.1
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
5
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
Annex ZB
(informative)
Relationship between this European Standard and the essential
requirements of EU Directive 2014/34/EU
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide a means of conforming to Essential
Requirements of the New Approach Directive 2014/34/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the clauses of
this standard given in Table ZB.1 confers, within the limits of the scope of this standard, a presumption
of conformity with the corresponding Essential Requirements of that Directive and associated EFTA
regulations.
Table ZB.1 — Correspondence between this European Standard and Directive 2014/34/EU
Clause(s)/sub-clause(s) of this EN Essential Requirements Qualifying remarks/Notes
of Directive
5.1 A
5.16, 5.16.4, 5.17 1.0.1
5.1, 5.4, 7.5.2 1.0.2
5.1, 5.20.2 1.0.4
5.9.5, 5.16.1 1.0.5
5.4, 5.9.7, 5.16, 7.1, 7.4, 7.5, 7.5.2, 7.7, 1.0.6
7.7.1, 7.7.4, 7.11
5.16.4 1.1.1
5.18.3 1.1.2
5.8.9 1.1.3
5.5 1.2.1
5.3 1.2.2
5.8.3, 5.10.6.6, 5.10.9, 5.22, 5.23.8.4 1.2.3
5.17.7 1.2.4
5.20.2 1.2.5
7.7.1 1.2.6
5.8.1.2, 5.8.6, 5.16.4.3, 5.21.8 1.2.7
5.20.7 1.2.8
5.16.5.3.3 1.2.9
5.16.5.3.2 1.3.1
5.21.3 1.3.2
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SIST EN ISO 21789:2022
EN ISO 21789:2022 (E)
5.21.3.3 1.3.3
5.18.3 1.3.4
5.1, 5.20.2 1.4.1
5.20.2 1.4.2
5.20.4, 5.20.8, 5.23.9.1 1.5.1
5.8.18, 5.20.4 1.5.2
5.20.8 1.5.3
5.20.3 1.5.4
5.1 1.5.5
5.20.5 1.5.6
5.19.3 1.5.7
5.20.4 1.5.8
5.20.8 1.6.1
5.20.8 1.6.2
5.21.9 1.6.3
5.19 1.6.5
5.16.4, 5.16.5, 5.17 2.2.1.1
5.13.4, 5.20.2 2.2.1.2
5.8.2, 5.8.18 2.2.1.3
5.16.4, 5.16.5, 5.17 2.3.1.1
5.13.4, 5.20.2 2.3.1.2
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
7
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SIST EN ISO 21789:2022
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SIST EN ISO 21789:2022
INTERNATIONAL ISO
STANDARD 21789
Second edition
2022-07
Gas turbine applications — Safety
Applications des turbines à gaz — Sécurité
Reference number
ISO 21789:2022(E)
© ISO 2022
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SIST EN ISO 21789:2022
ISO 21789:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2022 – All rights reserved
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SIST EN ISO 21789:2022
ISO 21789:2022(E)
Contents Page
Foreword .vii
Introduction .viii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 4
4 List of significant hazards . 6
5 Safety requirements. 6
5.1 General . 6
5.2 Risk assessment . 6
5.2.1 Risk assessments requirements . 7
5.2.2 As low as reasonably practical . . 8
5.3 Modifications and replacement parts . 8
5.4 Foreseeable misuse . 8
5.5 Lifetime . 8
5.6 Hazard combinations . 8
5.7 Noise reduction at design stage . 8
5.8 Mechanical . 9
5.8.1 Guarding . 9
5.8.2 Accessibility for maintenance. 9
5.8.3 Casing design . 10
5.8.4 Gas turbine compressor surge . 10
5.8.5 Stability and handling . . 10
5.8.6 Overload of couplings, rotating shafts and gears due to torque . 11
5.8.7 Vibration . 11
5.8.8 Mechanical failure caused by corrosion . 11
5.8.9 Design methods and materials . 11
5.8.10 Gas turbine temperatures .12
5.8.11 Environmental loads . .12
5.8.12 Assembly features .12
5.8.13 Couplings . 12
5.8.14 Rotor bearings .12
5.8.15 Rotating part failure .12
5.8.16 Foreign object damage (FOD) screen . 13
5.8.17 Gearbox . 13
5.8.18 Starting systems . 13
5.8.19 Low ambient temperature conditions . 14
5.9 Gas turbine compressor air inlet system . 14
5.9.1 General . 14
5.9.2 Inlet air contamination . 14
5.9.3 Icing monitoring and prevention . 14
5.9.4 Implosion protection .15
5.9.5 Inlet explosion protection . 15
5.9.6 Waste disposal through combustion . 16
5.9.7 Recirculation . . 16
5.9.8 Gas turbine compressor air inlet ducting . 16
5.10 Fuel systems . 17
5.10.1 General . 17
5.10.2 Fuel supply quality and supply conditions . 17
5.10.3 Pressure (leakage) testing. 17
5.10.4 Fuel supply heating . 17
5.10.5 Gas fuel systems . . 17
5.10.6 Liquid fuel systems . 21
iii
© ISO 2022 – All rights reserved
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SIST EN ISO 21789:2022
ISO 21789:2022(E)
5.10.7 Multi-fuel systems .25
5.10.8 Fuel purging . 25
5.10.9 Fuel drainage . 26
5.11 Combustion supervision .26
5.11.1 General . 26
5.11.2 Requirements for ignition . 26
5.11.3 Extinction safety time . 27
5.12 Exhaust system . 27
5.12.1 Damper controls . 27
5.12.2 Flexible joint location . 27
5.12.3 Exhaust outlet . 27
5.12.4 Explosion protection. 27
5.13 Enclosures.28
5.13.1 General .28
5.13.2 Enclosure structure .29
5.13.3 Enclosure fire precautions .29
5.13.4 Explosion prevention and protection — Area classification — Ventilation .29
5.13.5 Gas detection .29
5.13.6 Enclosure purging .30
5.13.7 Flammable mist .30
5.13.8 Access and doors . 30
5.13.9 Entrapment. 31
5.14 Lighting . 31
5.15 Fire precautions . 31
5.15.1 General . 31
5.15.2 Structural fire risk reduction . 31
5.15.3 Flammable fluids mitigation and containment . 31
5.15.4 Fire protection . 32
5.15.5 Fire detection . 32
5.15.6 Fire extinguishing systems . 33
5.15.7 Water mist extinguishant .34
5.15.8 Extinguishing system controls .34
5.15.9 Escape .36
5.15.10 Uncontrolled release of media and loss of propellant pressure .36
5.15.11 Vessel thermal relief (burst disc) .36
5.15.12 Propellant vessels . 36
5.15.13 Release of extinguishant into gas turbine halls, control rooms, etc. .36
5.16 Hazardous area classification and explosion prevention and protection . 37
5.16.1 General . 37
5.16.2 Area classification . 37
5.16.3 Explosion prevention . . 37
5.16.4 Avoidance or reduction of effective ignition sources .38
5.16.5 Reduction of explosion effects in an enclosed space .39
5.17 Ventilation . 41
5.17.1 General . 41
5.17.2 Cooling . 41
5.17.3 Heating . 41
5.17.4 Hazardous area control .
...
SLOVENSKI STANDARD
oSIST prEN ISO 21789:2020
01-junij-2020
Uporaba plinske turbine - Varnost (ISO/DIS 21789:2020)
Gas turbine applications - Safety (ISO/DIS 21789:2020)
Gasturbinen - Sicherheit (ISO/DIS 21789:2020)
Applications des turbines à gaz - Sécurité (ISO/DIS 21789:2020)
Ta slovenski standard je istoveten z: prEN ISO 21789
ICS:
27.040 Plinske in parne turbine. Gas and steam turbines.
Parni stroji Steam engines
oSIST prEN ISO 21789:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 21789:2020
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oSIST prEN ISO 21789:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 21789
ISO/TC 192 Secretariat: ANSI
Voting begins on: Voting terminates on:
2020-04-14 2020-07-07
Gas turbine applications — Safety
Applications des turbines à gaz — Sécurité
ICS: 27.040
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 21789:2020(E)
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2020
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oSIST prEN ISO 21789:2020
ISO/DIS 21789:2020(E)
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ii © ISO 2020 – All rights reserved
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oSIST prEN ISO 21789:2020
ISO/DIS 21789:2020(E)
Contents Page
Foreword .vii
Introduction .viii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 4
4 List of significant hazards . 6
5 Safety requirements . 6
5.1 General . 6
5.2 Risk assessment . 6
5.2.1 Risk assessments requirements . 7
5.3 Modifications and replacement parts . 8
5.4 Foreseeable misuse . 8
5.5 Lifetime . 8
5.6 Hazard combinations . 8
5.7 Noise . 8
5.8 Mechanical . 9
5.8.1 Guarding . 9
5.8.2 Accessibility for maintenance . 9
5.8.3 Casing design .10
5.8.4 Gas turbine compressor surge .10
5.8.5 Stability and handling . . .10
5.8.6 Overload of couplings, rotating shafts and gears due to torque .10
5.8.7 Vibration .11
5.8.8 Mechanical failure caused by corrosion .11
5.8.9 Design methods and materials .11
5.8.10 Gas turbine temperatures .11
5.8.11 Environmental loads .11
5.8.12 Assembly features .12
5.8.13 Couplings .12
5.8.14 Rotor bearings .12
5.8.15 Rotating part failure .12
5.8.16 Foreign object damage (FOD) screen .13
5.8.17 Gearbox .13
5.8.18 Starting systems .13
5.8.19 Low ambient temperature conditions.14
5.9 Gas turbine compressor air inlet system .14
5.9.1 General.14
5.9.2 Inlet air contamination .14
5.9.3 Icing monitoring and prevention .14
5.9.4 Implosion protection .14
5.9.5 Inlet explosion protection .15
5.9.6 Waste disposal through combustion .15
5.9.7 Recirculation .16
5.9.8 Gas turbine compressor air inlet ducting .16
5.10 Fuel systems .16
5.10.1 General.16
5.10.2 Fuel supply quality and supply conditions .16
5.10.3 Pressure (leakage) testing .17
5.10.4 Fuel supply heating . .17
5.10.5 Gas fuel systems .17
5.10.6 Liquid fuel systems .21
5.10.7 Multi-fuel systems .25
© ISO 2020 – All rights reserved iii
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oSIST prEN ISO 21789:2020
ISO/DIS 21789:2020(E)
5.10.8 Fuel purging .25
5.10.9 Fuel drainage .26
5.11 Combustion supervision .26
5.11.1 General.26
5.11.2 Requirements for ignition .26
5.11.3 Extinction safety time .27
5.12 Exhaust system .27
5.12.1 Damper controls.27
5.12.2 Flexible joint location .27
5.12.3 Exhaust outlet .27
5.12.4 Explosion protection .27
5.13 Enclosures .28
5.13.1 General.28
5.13.2 Enclosure structure .29
5.13.3 Enclosure fire precautions .29
5.13.4 Explosion prevention and protection — Area classification — Ventilation .29
5.13.5 Gas detection .29
5.13.6 Enclosure purging .30
5.13.7 Flammable Mist .30
5.13.8 Access and doors .30
5.13.9 Entrapment .31
5.14 Lighting .31
5.15 Fire precautions .31
5.15.1 General.31
5.15.2 Structural fire risk reduction .31
5.15.3 Flammable Fluids Mitigation and Containment .31
5.15.4 Fire protection .32
5.15.5 Fire detection .32
5.15.6 Fire extinguishing systems .33
5.15.7 Water mist extinguishant .34
5.15.8 Extinguishing system controls .34
5.15.9 Escape .36
5.15.10 Uncontrolled release of media and loss of propellant pressure .36
5.15.11 Vessel thermal relief (burst disc) .36
5.15.12 Propellant vessels .36
5.15.13 Release of extinguishant into gas turbine halls, control rooms, etc. .36
5.16 Hazardous area classification and explosion prevention and protection .37
5.16.1 General.37
5.16.2 Area classification .37
5.16.3 Explosion prevention .37
5.16.4 Ignition source control .38
5.16.5 Reduction of explosion effects in an enclosed space .39
5.17 Ventilation .40
5.17.1 General.40
5.17.2 Cooling .40
5.17.3 Heating .41
5.17.4 Hazardous area control .41
5.17.5 Hot surfaces.41
5.17.6 Ventilation inlet location .41
5.17.7 Ventilation inlet filtration .42
5.17.8 Ventilation inlet ducting .42
5.17.9 Ventilation outlet location .42
5.17.10 Ventilation monitoring .42
5.18 Fans .42
5.18.1 Fan guards and structural failure .42
5.18.2 Air blast oil coolers .43
5.18.3 Sparking of fan blades .43
5.19 Flammable gas detection .43
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oSIST prEN ISO 21789:2020
ISO/DIS 21789:2020(E)
5.19.1 Type / selection principles .43
5.19.2 Location principles .43
5.19.3 Settings .43
5.19.4 Enclosures containing hot surfaces — Screening tool .43
5.19.5 Maintenance and calibration .44
5.20 Control and automatic protection systems .44
5.20.1 General.44
5.20.2 Environmental suitability .44
5.20.3 Ergonomics .45
5.20.4 Failure .45
5.20.5 Calibration .45
5.20.6 Testing .45
5.20.7 Speed control .45
5.20.8 Gas turbine emergency shutdown system .46
5.20.9 Interlocks . .47
5.20.10 Cyber security .47
5.21 Electrical .47
5.21.1 Design/Installation .47
5.21.2 Isolation and stored energy .47
5.21.3 Electrostatic energy and bonding .48
5.21.4 Water ingress .48
5.21.5 Lightning .48
5.21.6 Electromagnetic compatibility (EMC) .48
5.21.7 Battery installations . .49
5.21.8 Electrical overload .49
5.21.9 Electrical power failure .49
5.22 Drains, vents and bleeds .49
5.22.1 General.49
5.22.2 Vents for flammable gases .50
5.22.3 Toxic and hazardous emissions . .50
5.22.4 Gas turbine compressor bleeds .50
5.23 Pressure equipment .51
5.23.1 General.51
5.23.2 Design .51
5.23.3 Hazards .51
5.23.4 Misuse .51
5.23.5 Handling and operation .51
5.23.6 Isolation, draining and venting .51
5.23.7 Fluid injection.52
5.23.8 Assemblies .
...
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