SIST ISO 16924:2017

Natural gas fuelling stations - LNG stations for fuelling vehicles

ISO 16924:2016 specifies the design, construction, operation, maintenance and inspection of stations for fuelling liquefied natural gas (LNG) to vehicles, including equipment, safety and control devices.
ISO 16924:2016 also specifies the design, construction, operation, maintenance and inspection of fuelling stations for using LNG as an onsite source for fuelling CNG to vehicles (LCNG fuelling stations), including safety and control devices of the station and specific LCNG fuelling station equipment.
NOTE Specific CNG equipment is dealt with in ISO 16923.
ISO 16924:2016 is applicable to fuelling stations receiving LNG and other liquefied methane-rich gases that comply with local applicable gas composition regulation or with the gas quality requirements of ISO 13686.
ISO 16924:2016 includes all equipment from the LNG storage tank filling connection up to the fuelling nozzle on the vehicle. The LNG storage tank filling connection itself and the vehicle fuelling nozzle are not covered in this document.
ISO 16924:2016 includes fuelling stations having the following characteristics:
- private access;
- public access (self-service or assisted);
- metered dispensing and non metered dispensing;
- fuelling stations with fixed LNG storage;
- fuelling stations with mobile LNG storage;
- movable fuelling stations;
- mobile fuelling stations;
- multi-fuel stations.

Stations-service de gaz naturel - Stations GNL pour le ravitaillement de véhicules

L'ISO 16924:2016 sp�cifie la conception, la construction, l'exploitation, la maintenance et l'inspection des stations-service de gaz naturel liqu�fi� (GNL) pour v�hicules, dont les �quipements et les dispositifs de s�curit� et de contr�le.
L'ISO 16924:2016 sp�cifie �galement la conception, la construction, l'exploitation, la maintenance et l'inspection des stations-service de gaz naturel liqu�fi� (GNL) servant �galement de site de ravitaillement des v�hicules en gaz naturel comprim� (GNC), appel�es stations-service de GNLC (gaz naturel liqu�fi�/comprim�), en couvrant les dispositifs de s�curit� et de contr�le des stations et les �quipements propres aux stations-service GNLC.
NOTE Les �quipements propres aux stations de GNC sont couverts par l'ISO 16923.
L'ISO 16924:2016 s'applique aux stations-service ravitaill�es en GNL et autres gaz liqu�fi�s riches en m�thane conformes � la r�glementation locale applicable aux compositions gazeuses ou aux exigences en mati�re de qualit� des gaz de l'ISO 13686.
L'ISO 16924:2016 couvre tous les �quipements, du connecteur pour le d�potage de GNL dans r�servoir de stockage GNL au pistolet de ravitaillement destin� aux r�servoirs des v�hicules. Le connecteur de ravitaillement du r�servoir et le pistolet de ravitaillement des v�hicules � proprement dits ne sont pas couverts par ce document.
L'ISO 16924:2016 couvre toutes les stations-service pr�sentant les caract�ristiques suivantes:
- acc�s priv�;
- acc�s public (self-service ou avec assistance);
- borne de distribution de carburant avec ou sans compteur;
- stations-service avec stockage de GNL fixe;
- stations-service avec stockage mobile de GNL;
- stations-service transportables;
- stations-service mobiles;
- stations-service multi-carburants.

Polnilne postaje za oskrbo z zemeljskim plinom - Postaje za oskrbo vozil z utekočinjenim zemeljskim plinom

Standard opredeljuje načrtovanje, gradnjo, delovanje, vzdrževanje in kontrolo postaj za oskrbo vozil z utekočinjenim zemeljskim plinom (LNG), vključno z opremo, varnostnimi in kontrolnimi napravami.
Ravno tako opredeljuje načrtovanje, gradnjo, delovanje, vzdrževanje in kontrolo polnilnih postaj za uporabo utekočinjenega zemeljskega plina kot vira za polnjenje vozil z zemeljskim plinom na kraju samem (polnilne postaje z utekočinjenim stisnjenim zemeljskim plinom (LCNG), vključno z varnostnimi in kontrolnimi napravami postaje in specifično opremo polnilnih postaj z utekočinjenim stisnjenim zemeljskim plinom.
Velja za polnilne postaje, ki prejemajo utekočinjeni zemeljski plin in druge z metanom bogate utekočinjene pline, ki izpolnjujejo lokalni veljavni predpis o sestavi plina ali zahteve o kakovosti plina po SIST EN ISO 13686.  
Vključuje vso opremo, od priključka na rezervoarju za shranjevanje utekočinjenega zemeljskega plina do polnilne šobe na vozilu. Sam priključek na rezervoarju za shranjevanje utekočinjenega zemeljskega plina (UZP) in polnilna šoba na vozilu nista zajeta v tem standardu.
Standard vključuje polnile postaje, ki imajo naslednje značilnosti:
‒zasebni dostop,
‒javni dostop (samopostrežni ali z asistenco),
‒merjena in nemerjena distribucija/z vnaprejšnjim odmerkom in brez njega,
‒polnilne postaje s stalnim skladiščenjem utekočinjenega zemeljskega plina,
‒polnilne postaje z mobilnim/premičnim skladiščenjem utekočinjenega zemeljskega plina,
‒premične polnilne postaje,
‒mobilne polnilne postaje,
‒postaje z različnimi vrstami goriva.
Vključuje vso opremo, od priključka na rezervoarju za shranjevanje utekočinjenega zemeljskega plina do polnilne šobe na vozilu. Sam priključek na rezervoarju za shranjevanje utekočinjenega zemeljskega plina (UZP) in polnilna šoba na vozilu nista zajeta v tem standardu.
Standard vključuje polnile postaje, ki imajo naslednje značilnosti:
‒   zasebni dostop,
‒   javni dostop (samopostrežni ali z asistenco),
‒   merjena in nemerjena distribucija/z vnaprejšnjim odmerkom in brez njega,
‒   polnilne postaje s stalnim skladiščenjem utekočinjenega zemeljskega plina,
‒   polnilne postaje z mobilnim/premičnim skladiščenjem utekočinjenega zemeljskega plina,
‒   premične polnilne postaje,
‒   mobilne polnilne postaje,
‒   postaje z različnimi vrstami goriva.

General Information

• Status: Published
• Public Enquiry End Date: 19-Aug-2017
• Publication Date: 08-Aug-2017
• ICS: 75.200 - Petroleum products and natural gas handling equipment
• Technical Committee: DPL - Gas supply
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 31-Jul-2017
• Due Date: 05-Oct-2017
• Completion Date: 09-Aug-2017
• Ref Project: ISO 16924:2016 - Natural gas fuelling stations — LNG stations for fuelling vehicles

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ISO 16924:2017
01-september-2017
3ROQLOQHSRVWDMH]DRVNUER]]HPHOMVNLPSOLQRP3RVWDMH]DRVNUERYR]LO]
XWHNRþLQMHQLP]HPHOMVNLPSOLQRP
Natural gas fuelling stations - LNG stations for fuelling vehicles
Stations-service de gaz naturel - Stations GNL pour le ravitaillement de véhicules
Ta slovenski standard je istoveten z: ISO 16924:2016
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
SIST ISO 16924:2017 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ISO 16924:2017

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SIST ISO 16924:2017
INTERNATIONAL ISO
STANDARD 16924
First edition
2016-12-01
Natural gas fuelling stations — LNG
stations for fuelling vehicles
Stations-service de gaz naturel — Stations GNL pour le ravitaillement
de véhicules
Reference number
ISO 16924:2016(E)
©
ISO 2016

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

SIST ISO 16924:2017
ISO 16924:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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SIST ISO 16924:2017
ISO 16924:2016(E)

Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 9
5 Risk management .10
5.1 Risk assessment .10
5.1.1 General.10
5.1.2 Protection against overpressure .10
5.1.3 Static electricity .11
5.2 Fire protection .11
5.2.1 Hazardous area classification .11
5.2.2 Sources of ignition .11
5.2.3 Fire fighting .12
5.3 Explosion protection measures .12
6 General design requirements .12
6.1 General .12
6.1.1 Design philosophy .12
6.1.2 Buildings and civil works .13
6.1.3 Installation and construction .14
6.2 Site layout .15
6.2.1 Separation distances .15
6.2.2 Traffic management .15
6.2.3 Security .15
6.2.4 Requirements for location of equipment .15
6.3 Environmental considerations .16
6.3.1 Noise attenuation .16
6.3.2 Prevention of venting of natural gas .16
7 Fuel supply to the fuelling station .16
7.1 Application .16
7.2 Equipment compatibility .16
7.3 Filling connector .17
7.4 Requirements for filling .17
7.4.1 General requirements .17
7.4.2 Prevention of overpressurization and overfilling .17
7.5 Prevention of back flow .17
7.6 Bleed connections .17
7.7 Draining of liquid from the LNG storage tank .18
7.8 LNG tanker .18
7.8.1 Immobility .18
7.8.2 Anti-drive-away equipment .18
7.8.3 Turning off the engine .18
7.8.4 Equalizing the potentials .18
8 Storage .18
8.1 LNG storage .18
8.1.1 Design and construction .18
8.1.2 Safety requirements .20
8.1.3 Installation guidance .24
8.2 CNG buffer storage .25
9 Pumps and compressors .25
9.1 Connection of LNG pumps to the LNG storage tank .25
© ISO 2016 – All rights reserved iii

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SIST ISO 16924:2017
ISO 16924:2016(E)

9.1.1 General.25
9.1.2 NPSH requirements .25
9.1.3 Vapour return .25
9.1.4 Protection against weather .25
9.1.5 Accessibility .26
9.2 LNG centrifugal pump (including ancillaries) .26
9.2.1 General provisions.26
9.2.2 Liquid inlet to the centrifugal pump .26
9.2.3 Centrifugal pump design .26
9.2.4 Vibration .26
9.2.5 Detection of shaft seal leak .27
9.2.6 Detection of cavitation .27
9.3 LNG reciprocating pump for LCNG fuelling stations (including ancillaries) .27
9.3.1 General provisions.27
9.3.2 Liquid supplied to the reciprocating pump .27
9.3.3 Design .27
9.3.4 Vibration .27
9.3.5 Pulsation .27
9.4 Commonalities for LNG centrifugal and reciprocating pumps .27
9.4.1 Suction line .27
9.4.2 Instrumentation .28
9.4.3 Markings of a pump .28
9.4.4 Instructions .28
9.5 Natural gas compressor .29
10 Dispensers .29
10.1 LNG dispensers .29
10.1.1 General requirements .29
10.1.2 Breakaway system .31
10.1.3 Fuelling hoses .31
10.1.4 Fuelling nozzles .32
10.1.5 Dispenser enclosure .32
10.1.6 Other requirements .33
10.2 CNG dispensers .33
11 Vaporizers and heaters .34
11.1 Application .34
11.2 Design of vaporizers and heaters .34
11.3 Ambient air vaporizer .35
11.3.1 General.35
11.3.2 Defrosting .35
11.3.3 Aluminium vaporizers .35
11.4 Electric vaporizer/heater .35
11.5 Water bath vaporizer .36
11.6 Fired vaporizers .36
11.7 Remotely heated vaporizers .36
12 Odorization .36
12.1 General requirements .36
12.2 High-pressure odorizer .37
12.3 Safety .37
12.4 Monitoring .37
12.5 Odorant .38
12.6 Dynamics of function .38
13 Pipework .38
13.1 General .38
13.2 Pipework design .38
13.2.1 General.38
13.2.2 Overground pipework .39
iv © ISO 2016 – All rights reserved

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SIST ISO 16924:2017
ISO 16924:2016(E)

13.2.3 Underground pipework .39
13.2.4 Pipework in ducts .39
13.2.5 Flexible connections .40
14 Electrical equipment and wiring .40
14.1 General .40
14.2 Main considerations .40
14.2.1 Grounding .40
14.2.2 Lightning .40
14.2.3 Contact with live parts .40
14.2.4 Cables . .40
14.2.5 Static electricity .41
14.3 Other considerations .41
14.3.1 Interface .41
14.3.2 Primary seal .41
14.3.3 Additional seal .41
14.3.4 Conduit seals .41
14.3.5 Detection vents .42
15 Instrumentation and control system .42
15.1 General .42
15.2 Gas detectors .42
15.3 Flame detectors .42
15.4 Pressure gauges.42
15.5 Temperature sensors .42
15.6 Manual emergency shutdown devices .42
15.7 Emergency power supply unit .43
16 Emergency shutdown .43
16.1 Application .43
16.2 Procedure .43
16.3 Activation .43
16.4 ESD action .43
16.5 Reset .44
17 Special configurations.44
17.1 Movable LNG fuelling station.44
17.1.1 General requirements .44
17.1.2 Anchoring .44
17.1.3 Containment .44
17.2 Mobile LNG fuelling station .44
17.2.1 General requirements .44
17.2.2 Anchoring .45
17.2.3 Containment .45
17.2.4 Design .
...

INTERNATIONAL ISO
STANDARD 16924
First edition
2016-12-01
Natural gas fuelling stations — LNG
stations for fuelling vehicles
Stations-service de gaz naturel — Stations GNL pour le ravitaillement
de véhicules
Reference number
ISO 16924:2016(E)
©
ISO 2016

---------------------- Page: 1 ----------------------
ISO 16924:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 16924:2016(E)

Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 9
5 Risk management .10
5.1 Risk assessment .10
5.1.1 General.10
5.1.2 Protection against overpressure .10
5.1.3 Static electricity .11
5.2 Fire protection .11
5.2.1 Hazardous area classification .11
5.2.2 Sources of ignition .11
5.2.3 Fire fighting .12
5.3 Explosion protection measures .12
6 General design requirements .12
6.1 General .12
6.1.1 Design philosophy .12
6.1.2 Buildings and civil works .13
6.1.3 Installation and construction .14
6.2 Site layout .15
6.2.1 Separation distances .15
6.2.2 Traffic management .15
6.2.3 Security .15
6.2.4 Requirements for location of equipment .15
6.3 Environmental considerations .16
6.3.1 Noise attenuation .16
6.3.2 Prevention of venting of natural gas .16
7 Fuel supply to the fuelling station .16
7.1 Application .16
7.2 Equipment compatibility .16
7.3 Filling connector .17
7.4 Requirements for filling .17
7.4.1 General requirements .17
7.4.2 Prevention of overpressurization and overfilling .17
7.5 Prevention of back flow .17
7.6 Bleed connections .17
7.7 Draining of liquid from the LNG storage tank .18
7.8 LNG tanker .18
7.8.1 Immobility .18
7.8.2 Anti-drive-away equipment .18
7.8.3 Turning off the engine .18
7.8.4 Equalizing the potentials .18
8 Storage .18
8.1 LNG storage .18
8.1.1 Design and construction .18
8.1.2 Safety requirements .20
8.1.3 Installation guidance .24
8.2 CNG buffer storage .25
9 Pumps and compressors .25
9.1 Connection of LNG pumps to the LNG storage tank .25
© ISO 2016 – All rights reserved iii

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ISO 16924:2016(E)

9.1.1 General.25
9.1.2 NPSH requirements .25
9.1.3 Vapour return .25
9.1.4 Protection against weather .25
9.1.5 Accessibility .26
9.2 LNG centrifugal pump (including ancillaries) .26
9.2.1 General provisions.26
9.2.2 Liquid inlet to the centrifugal pump .26
9.2.3 Centrifugal pump design .26
9.2.4 Vibration .26
9.2.5 Detection of shaft seal leak .27
9.2.6 Detection of cavitation .27
9.3 LNG reciprocating pump for LCNG fuelling stations (including ancillaries) .27
9.3.1 General provisions.27
9.3.2 Liquid supplied to the reciprocating pump .27
9.3.3 Design .27
9.3.4 Vibration .27
9.3.5 Pulsation .27
9.4 Commonalities for LNG centrifugal and reciprocating pumps .27
9.4.1 Suction line .27
9.4.2 Instrumentation .28
9.4.3 Markings of a pump .28
9.4.4 Instructions .28
9.5 Natural gas compressor .29
10 Dispensers .29
10.1 LNG dispensers .29
10.1.1 General requirements .29
10.1.2 Breakaway system .31
10.1.3 Fuelling hoses .31
10.1.4 Fuelling nozzles .32
10.1.5 Dispenser enclosure .32
10.1.6 Other requirements .33
10.2 CNG dispensers .33
11 Vaporizers and heaters .34
11.1 Application .34
11.2 Design of vaporizers and heaters .34
11.3 Ambient air vaporizer .35
11.3.1 General.35
11.3.2 Defrosting .35
11.3.3 Aluminium vaporizers .35
11.4 Electric vaporizer/heater .35
11.5 Water bath vaporizer .36
11.6 Fired vaporizers .36
11.7 Remotely heated vaporizers .36
12 Odorization .36
12.1 General requirements .36
12.2 High-pressure odorizer .37
12.3 Safety .37
12.4 Monitoring .37
12.5 Odorant .38
12.6 Dynamics of function .38
13 Pipework .38
13.1 General .38
13.2 Pipework design .38
13.2.1 General.38
13.2.2 Overground pipework .39
iv © ISO 2016 – All rights reserved

---------------------- Page: 4 ----------------------
ISO 16924:2016(E)

13.2.3 Underground pipework .39
13.2.4 Pipework in ducts .39
13.2.5 Flexible connections .40
14 Electrical equipment and wiring .40
14.1 General .40
14.2 Main considerations .40
14.2.1 Grounding .40
14.2.2 Lightning .40
14.2.3 Contact with live parts .40
14.2.4 Cables . .40
14.2.5 Static electricity .41
14.3 Other considerations .41
14.3.1 Interface .41
14.3.2 Primary seal .41
14.3.3 Additional seal .41
14.3.4 Conduit seals .41
14.3.5 Detection vents .42
15 Instrumentation and control system .42
15.1 General .42
15.2 Gas detectors .42
15.3 Flame detectors .42
15.4 Pressure gauges.42
15.5 Temperature sensors .42
15.6 Manual emergency shutdown devices .42
15.7 Emergency power supply unit .43
16 Emergency shutdown .43
16.1 Application .43
16.2 Procedure .43
16.3 Activation .43
16.4 ESD action .43
16.5 Reset .44
17 Special configurations.44
17.1 Movable LNG fuelling station.44
17.1.1 General requirements .44
17.1.2 Anchoring .44
17.1.3 Containment .44
17.2 Mobile LNG fuelling station .44
17.2.1 General requirements .44
17.2.2 Anchoring .45
17.2.3 Containment .45
17.2.4 Design .45
17.2.5 Additional requirements for operation .45
18 Testing and commissioning .45
18.1 Testing .45
18.1.1 Electrical testing .45
18.1.2 Pressure s
...

NORME ISO
INTERNATIONALE 16924
Première édition
2016-12-01
Stations-service de gaz naturel —
Stations GNL pour le ravitaillement de
véhicules
Natural gas fuelling stations — LNG stations for fuelling vehicles
Numéro de référence
ISO 16924:2016(F)
©
ISO 2016

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ISO 16924:2016(F)

DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2016, Publié en Suisse
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 16924:2016(F)

Sommaire Page
Avant-propos .vii
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Abréviations .10
5 Gestion des risques .10
5.1 Appréciation du risque .10
5.1.1 Généralités .10
5.1.2 Protection contre une surpression.11
5.1.3 Électricité statique .11
5.2 Sécurité incendie .12
5.2.1 Classification des zones dangereuses .12
5.2.2 Sources d’inflammation .12
5.2.3 Lutte contre l’incendie .12
5.3 Mesures en matière de protection contre les explosions .13
6 Exigences de conception générales .13
6.1 Généralités .13
6.1.1 Principe de conception .13
6.1.2 Bâtiments et ouvrages de génie civil .13
6.1.3 Installation et construction .14
6.2 Disposition du site .16
6.2.1 Distances de séparation .16
6.2.2 Gestion du trafic .16
6.2.3 Sécurité .16
6.2.4 Exigences relatives à l’emplacement des composants .16
6.3 Considérations environnementales .17
6.3.1 Atténuation du bruit .17
6.3.2 Prévention de mise à l’évent de gaz naturel .17
7 Approvisionnement en carburant de la station-service .17
7.1 Périmètre d’application .17
7.2 Compatibilité des équipements .17
7.3 Connecteur de dépotage .18
7.4 Exigences relatives au dépotage .18
7.4.1 Exigences générales .18
7.4.2 Prévention d’une surpression et d’un suremplissage .18
7.5 Prévention de débit à contre-courant .19
7.6 Raccords de purge .19
7.7 Vidange liquide du réservoir de stockage GNL .19
7.8 Camion-citerne GNL .19
7.8.1 Immobilité .19
7.8.2 Équipement d’immobilisation .19
7.8.3 Coupure du moteur.19
7.8.4 Équilibrage de tension .19
8 Stockage .20
8.1 Stockage de GNL .20
8.1.1 Conception et construction.20
8.1.2 Exigences de sécurité .22
8.1.3 Préconisations d’installation .26
8.2 Stockage tampon de GNC .27
9 Pompes et compresseurs .27
9.1 Connexion des pompes GNL au réservoir de stockage GNL .27
© ISO 2016 – Tous droits réservés iii

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ISO 16924:2016(F)

9.1.1 Généralités .27
9.1.2 Exigences en matière de NPSH .28
9.1.3 Retour de vapeur .28
9.1.4 Protection vis-à-vis des conditions climatiques .28
9.1.5 Accessibilité.28
9.2 Pompes centrifuges GNL (accessoires compris) .28
9.2.1 Dispositions générales .28
9.2.2 Entrée de liquide dans la pompe centrifuge .28
9.2.3 Conception d’une pompe centrifuge .28
9.2.4 Vibrations .29
9.2.5 Détection d’une fuite d’étanchéité de l’arbre .29
9.2.6 Détection d’une cavitation .29
9.3 Pompe à piston GNL pour un ravitaillement en GNLC (accessoires compris) .29
9.3.1 Dispositions générales .29
9.3.2 Entrée de liquide dans la pompe à piston .29
9.3.3 Conception .30
9.3.4 Vibrations .30
9.3.5 Pulsations .30
9.4 Points communs des pompes centrifuges et à piston pour GNL.30
9.4.1 Ligne d’aspiration .30
9.4.2 Instrumentation .30
9.4.3 Marquage d’une pompe .31
9.4.4 Instructions .31
9.5 Compresseur de gaz naturel .31
10 Bornes de distribution .32
10.1 Bornes de distribution GNL .32
10.1.1 Exigences générales .32
10.1.2 Système de désaccouplement .33
10.1.3 Flexible de distribution .34
10.1.4 Pistolets de distribution .35
10.1.5 Enveloppe de la borne de distribution .35
10.1.6 Autres exigences .35
10.2 Bornes de distribution GNC .36
11 Vaporisateurs et modules de chauffage .37
11.1 Application .37
11.2 Conception des vaporisateurs et modules de chauffage .37
11.3 Vaporisateur à air ambiant .38
11.3.1 Généralités .38
11.3.2 Dégivrage .38
11.3.3 Vaporisateurs en aluminium .38
11.4 Vaporisateur/module de chauffage électrique .38
11.5 Vaporisateur par bain d’eau .39
11.6 Vaporisateurs à foyer .39
11.7 Vaporisateurs chauffés à distance .39
12 Odorisation .39
12.1 Exigences générales .39
12.2 Odoriseur haute pression .40
12.3 Sécurité .40
12.4 Surveillance.40
12.5 Odorisant .41
12.6 Dynamique de la fonction .41
13 Tuyauterie .41
13.1 Généralités .41
13.2 Conception du circuit de tuyauterie .42
13.2.1 Généralités .42
13.2.2 Circuit de tuyauterie aérien .42
iv © ISO 2016 – Tous droits réservés

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ISO 16924:2016(F)

13.2.3 Circuit de tuyauterie enterré .42
13.2.4 Tuyauteries en conduits .43
13.2.5 Raccords flexibles.43
14 Équipements électriques et câblage .43
14.1 Généralités .43
14.2 Principales considérations .43
14.2.1 Mise à la terre .43
14.2.2 Foudre .43
14.2.3 Contact avec des parties sous tension .44
14.2.4 Câbles . .44
14.2.5 Électricité statique .44
14.3 Autres considérations .44
14.3.1 Interface .44
14.3.2 Garniture d’étanchéité principale .45
14.3.3 Garniture d’étanchéité supplémentaire .45
14.3.4 Garnitures d’étanchéité de gaine .45
14.3.5 Évents de détection .45
15 Instrumentation et système de contrôle .45
15.1 Généralités .45
15.2 Détecteurs de gaz .45
15.3 Dispositifs de surveillance de flamme .46
15.4 Manomètres .46
15.5 Capteurs de température .46
15.6 Dispositifs d’arrêt d’urgence .46
15.7 Bloc d’alimentation électrique de secours .46
16 Arrêt d’urgence .46
16.1 Application .46
16.2 Procédure .47
16.3 Activation .47
16.4 Action AU .47
16.5 Réinitialisation .48
17 Configurations particulières .48
17.1 Station-service GNL transportable .48
17.1.1 Exigences générales .48
17.1.2 Ancrage .48
17.1.3 Bassin de rétention .48
17.2 Station-service GNL mobile .48
17.2.1 Exigences générales .48
17.2.2 Ancrage .48
17.2.3 Bassin de rétention .48
17.2.4 Conception .49
17.2.5 Exigences supplémentaires applicables à l’exploitation .49
18 Essais et mise en service .49
18.1 Essais .49
18.1.1 Essai électrique .49
18.1.2 Essai de pression .49
18.1.3 Essai d’étanchéité .50
18.2 Mise en service .50
18.2.1 Dispositions générales .50
18.2.2 Purge .50
18.2.3 Essai fonctionnel .
...

SLOVENSKI STANDARD
oSIST ISO 16924:2017
01-julij-2017
3ROQLOQHSRVWDMH]DRVNUER]]HPHOMVNLPSOLQRP3RVWDMH]DRVNUERYR]LO]
XWHNRþLQMHQLP]HPHOMVNLPSOLQRP
Natural gas fuelling stations - LNG stations for fuelling vehicles
Stations-service de gaz naturel - Stations GNL pour le ravitaillement de véhicules
Ta slovenski standard je istoveten z: ISO 16924:2016
ICS:
75.200 2SUHPD]DVNODGLãþHQMH Petroleum products and
QDIWHQDIWQLKSURL]YRGRYLQ natural gas handling
]HPHOMVNHJDSOLQD equipment
oSIST ISO 16924:2017 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST ISO 16924:2017

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oSIST ISO 16924:2017
INTERNATIONAL ISO
STANDARD 16924
First edition
2016-12-01
Natural gas fuelling stations — LNG
stations for fuelling vehicles
Stations-service de gaz naturel — Stations GNL pour le ravitaillement
de véhicules
Reference number
ISO 16924:2016(E)
©
ISO 2016

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oSIST ISO 16924:2017
ISO 16924:2016(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved

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oSIST ISO 16924:2017
ISO 16924:2016(E)

Contents Page
Foreword .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 9
5 Risk management .10
5.1 Risk assessment .10
5.1.1 General.10
5.1.2 Protection against overpressure .10
5.1.3 Static electricity .11
5.2 Fire protection .11
5.2.1 Hazardous area classification .11
5.2.2 Sources of ignition .11
5.2.3 Fire fighting .12
5.3 Explosion protection measures .12
6 General design requirements .12
6.1 General .12
6.1.1 Design philosophy .12
6.1.2 Buildings and civil works .13
6.1.3 Installation and construction .14
6.2 Site layout .15
6.2.1 Separation distances .15
6.2.2 Traffic management .15
6.2.3 Security .15
6.2.4 Requirements for location of equipment .15
6.3 Environmental considerations .16
6.3.1 Noise attenuation .16
6.3.2 Prevention of venting of natural gas .16
7 Fuel supply to the fuelling station .16
7.1 Application .16
7.2 Equipment compatibility .16
7.3 Filling connector .17
7.4 Requirements for filling .17
7.4.1 General requirements .17
7.4.2 Prevention of overpressurization and overfilling .17
7.5 Prevention of back flow .17
7.6 Bleed connections .17
7.7 Draining of liquid from the LNG storage tank .18
7.8 LNG tanker .18
7.8.1 Immobility .18
7.8.2 Anti-drive-away equipment .18
7.8.3 Turning off the engine .18
7.8.4 Equalizing the potentials .18
8 Storage .18
8.1 LNG storage .18
8.1.1 Design and construction .18
8.1.2 Safety requirements .20
8.1.3 Installation guidance .24
8.2 CNG buffer storage .25
9 Pumps and compressors .25
9.1 Connection of LNG pumps to the LNG storage tank .25
© ISO 2016 – All rights reserved iii

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oSIST ISO 16924:2017
ISO 16924:2016(E)

9.1.1 General.25
9.1.2 NPSH requirements .25
9.1.3 Vapour return .25
9.1.4 Protection against weather .25
9.1.5 Accessibility .26
9.2 LNG centrifugal pump (including ancillaries) .26
9.2.1 General provisions.26
9.2.2 Liquid inlet to the centrifugal pump .26
9.2.3 Centrifugal pump design .26
9.2.4 Vibration .26
9.2.5 Detection of shaft seal leak .27
9.2.6 Detection of cavitation .27
9.3 LNG reciprocating pump for LCNG fuelling stations (including ancillaries) .27
9.3.1 General provisions.27
9.3.2 Liquid supplied to the reciprocating pump .27
9.3.3 Design .27
9.3.4 Vibration .27
9.3.5 Pulsation .27
9.4 Commonalities for LNG centrifugal and reciprocating pumps .27
9.4.1 Suction line .27
9.4.2 Instrumentation .28
9.4.3 Markings of a pump .28
9.4.4 Instructions .28
9.5 Natural gas compressor .29
10 Dispensers .29
10.1 LNG dispensers .29
10.1.1 General requirements .29
10.1.2 Breakaway system .31
10.1.3 Fuelling hoses .31
10.1.4 Fuelling nozzles .32
10.1.5 Dispenser enclosure .32
10.1.6 Other requirements .33
10.2 CNG dispensers .33
11 Vaporizers and heaters .34
11.1 Application .34
11.2 Design of vaporizers and heaters .34
11.3 Ambient air vaporizer .35
11.3.1 General.35
11.3.2 Defrosting .35
11.3.3 Aluminium vaporizers .35
11.4 Electric vaporizer/heater .35
11.5 Water bath vaporizer .36
11.6 Fired vaporizers .36
11.7 Remotely heated vaporizers .36
12 Odorization .36
12.1 General requirements .36
12.2 High-pressure odorizer .37
12.3 Safety .37
12.4 Monitoring .37
12.5 Odorant .38
12.6 Dynamics of function .38
13 Pipework .38
13.1 General .38
13.2 Pipework design .38
13.2.1 General.38
13.2.2 Overground pipework .39
iv © ISO 2016 – All rights reserved

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oSIST ISO 16924:2017
ISO 16924:2016(E)

13.2.3 Underground pipework .39
13.2.4 Pipework in ducts .39
13.2.5 Flexible connections .40
14 Electrical equipment and wiring .40
14.1 General .40
14.2 Main considerations .40
14.2.1 Grounding .40
14.2.2 Lightning .40
14.2.3 Contact with live parts .40
14.2.4 Cables . .40
14.2.5 Static electricity .41
14.3 Other considerations .41
14.3.1 Interface .41
14.3.2 Primary seal .41
14.3.3 Additional seal .41
14.3.4 Conduit seals .41
14.3.5 Detection vents .42
15 Instrumentation and control system .42
15.1 General .42
15.2 Gas detectors .42
15.3 Flame detectors .42
15.4 Pressure gauges.42
15.5 Temperature sensors .42
15.6 Manual emergency shutdown devices .42
15.7 Emergency power supply unit .43
16 Emergency shutdown .43
16.1 Application .43
16.2 Procedure .43
16.3 Activation .43
16.4 ESD action .43
16.5 Reset .44
17 Special configurations.44
17.1 Movable LNG fuelling station.44
17.1.1 General requirements .44
17.1.2 Anchoring .44
17.1.3 Containment .44
17.2 Mobile LNG fuelling station .44
17.2.1 General requirements .44
17.2.2 Anchoring .45
17.2.3 Containment .45
17.2.4 Design .
...