ISO 23212:2021
(Main)Ships and marine technology - Flange connection for fuel and lubrication oil bunkering - Basic dimensions and technical requirements
Ships and marine technology - Flange connection for fuel and lubrication oil bunkering - Basic dimensions and technical requirements
This document specifies the basic dimensions of PN 10 flanged connections for bunker fuel and lubricating oil transfer to ships from bunkering vessels or onshore facilities, and the technical requirements for the design of such connections. This document is not applicable to connections of the ship's fuel system for the reception of liquefied natural gas.
Titre manque
General Information
- Status
- Published
- Publication Date
- 21-Mar-2021
- Technical Committee
- ISO/TC 8/SC 3 - Piping and machinery
- Drafting Committee
- ISO/TC 8/SC 3/WG 16 - Fluid transfer connection for ships
- Current Stage
- 6060 - International Standard published
- Start Date
- 22-Mar-2021
- Due Date
- 01-Feb-2021
- Completion Date
- 22-Mar-2021
Overview
ISO 23212:2021 specifies the basic dimensions and technical requirements for PN 10 flange connections used for bunker fuel and lubricating oil bunkering on ships. It covers PN 10 flanged connections for transfer from bunkering vessels or onshore facilities to ships, including dimensional tables, part configurations and essential design requirements. This standard is not applicable to ship fuel system connections for liquefied natural gas (LNG).
Key topics and technical requirements
- Scope and classification
- Applies to PN 10 flange connections for bunker fuel (Type F) and lubricating oil (Type L).
- Execution variants: Execution 1 (blind flange, no handle), Execution 2 (one handle), Execution 3 (two handles).
- Basic dimensions
- Main dimensions, bolt patterns and blind-flange layouts are defined in figures and tables (DN ranges up to DN 300).
- Sealing surface dimensions follow ISO 7005-1; flat gasket dimensions follow ISO 7483.
- Pressure rating
- Minimum flange pressure rating: ≥ 1 MPa.
- Fasteners and hardware
- Fasteners comply with ISO 4014 (hexagon head bolts), ISO 4032 (nuts) and ISO 7091 (washers).
- Typical bolt sizes given (e.g., M16, M20) and strength classes specified in tables.
- Materials and gaskets
- Flanges: steel with tensile strength ≥ 400 MPa or equivalent.
- Fasteners: steel at specified strength classes; corrosion-resistant alternatives permitted without coating.
- Gaskets: elastic, oil-resistant materials suitable for –40 °C to +50 °C.
- Coatings, marking and packaging
- External paint consistent with ship fuel/lube systems; anti-corrosion coating required for fasteners unless stainless.
- Mandatory marking includes manufacturer, reference to ISO 23212, type/execution, DN, nominal pressure and material grade.
- Packaging must protect sealing surfaces and welding edges.
- Installation
- Recommended installation axis height: 600 mm to 1 000 mm above deck.
Applications and users
ISO 23212 is intended for:
- Shipyards and marine equipment manufacturers designing and fabricating bunkering flanges
- Naval architects and marine engineers specifying ship fuel and lubricating oil receiving connections
- Bunkering operators and onshore facility designers ensuring compatible flange interfaces
- Classification societies, procurement teams and maintenance crews for conformity, inspection and replacement
Practical uses include new-build specifications, retrofits, spare-part procurement, installation guidance and interoperability checks during bunkering operations.
Related standards
Normative references integral to ISO 23212 include:
- ISO 4014, ISO 4032, ISO 7005-1, ISO 7091, ISO 7483
Keywords: ISO 23212, flange connection, PN 10, bunker fuel, lubricating oil, ships, flange dimensions, marine bunkering, fasteners, gaskets, pressure rating.
Frequently Asked Questions
ISO 23212:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Ships and marine technology - Flange connection for fuel and lubrication oil bunkering - Basic dimensions and technical requirements". This standard covers: This document specifies the basic dimensions of PN 10 flanged connections for bunker fuel and lubricating oil transfer to ships from bunkering vessels or onshore facilities, and the technical requirements for the design of such connections. This document is not applicable to connections of the ship's fuel system for the reception of liquefied natural gas.
This document specifies the basic dimensions of PN 10 flanged connections for bunker fuel and lubricating oil transfer to ships from bunkering vessels or onshore facilities, and the technical requirements for the design of such connections. This document is not applicable to connections of the ship's fuel system for the reception of liquefied natural gas.
ISO 23212:2021 is classified under the following ICS (International Classification for Standards) categories: 47.020.30 - Piping systems. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 23212:2021 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 23212
First edition
2021-03
Ships and marine technology — Flange
connection for fuel and lubrication oil
bunkering — Basic dimensions and
technical requirements
Reference number
©
ISO 2021
© ISO 2021
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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2021 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 1
5 Basic dimensions. 2
6 Technical requirements . 5
6.1 Dimensions . 5
6.2 Pressure rating . 6
6.3 Fasteners . 6
6.4 Materials . 6
6.5 Coatings . 6
6.6 Marking . 6
6.7 Packaging . 7
6.8 Installation . 7
Foreword
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This document was prepared by Technical Committee ISO/TC 8, Ships and marine technology,
Subcommittee SC 3, Piping and machinery.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
INTERNATIONAL STANDARD ISO 23212:2021(E)
Ships and marine technology — Flange connection for fuel
and lubrication oil bunkering — Basic dimensions and
technical requirements
1 Scope
This document specifies the basic dimensions of PN 10 flanged connections for bunker fuel and
lubricating oil transfer to ships from bunkering vessels or onshore facilities, and the technical
requirements for the design of such connections.
This document is not applicable to connections of the ship's fuel system for the reception of liquefied
natural gas.
2 Normative refe
...










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