ISO 24132:2024

Ships and marine technology — Design and testing of marine transfer arms for liquefied hydrogen

This document specifies the design, minimum safety requirements, and inspection and testing procedures for liquefied hydrogen (LH2) marine transfer arms intended for use at onshore LH2 terminals handling LH2 carriers. It also covers the minimum requirements for safe LH2 transfer between ship and shore. Although the requirements for power/control systems are covered, this document does not include all of the details for the design and fabrication of standard parts and fittings associated with transfer arms. This document is mainly focused on hard pipe type transfer systems; hose type transfer systems are not described in detail in the general description of this document. However, hose type transfer systems can also be considered as reasonable vacuum insulated technology for the design of transfer arms for liquefied hydrogen.

Navires et technologie maritime — Conception et essais des bras de transfert marins pour l'hydrogène liquéfié

General Information

• Status: Published
• Publication Date: 26-Jun-2024
• ICS: 47.020.01 - General standards related to shipbuilding and marine structures
• Technical Committee: ISO/TC 8/SC 2 - Marine environment protection
• Drafting Committee: ISO/TC 8/SC 2/WG 12 - Marine liquefied hydrogen transfer arms
• Current Stage: 9092 - International Standard to be revised
• Due Date: 26-Mar-2025
• Completion Date: 26-Mar-2025

Standards Content (Sample)

International
Standard
ISO 24132
First edition
Ships and marine technology —
2024-06
Design and testing of marine
transfer arms for liquefied
hydrogen
Navires et technologie maritime — Conception et essais des bras
de transfert marins pour l'hydrogène liquéfié
Reference number
© ISO 2024
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Published in Switzerland
ii
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 9
5 Design of the arms . 10
5.1 Definition and description of the arms .10
5.1.1 General .10
5.1.2 Arms dimensions .11
5.2 Design basis.11
5.2.1 Product line diameter and product data .11
5.2.2 Material and grades .11
5.2.3 Stress analysis .11
5.2.4 Thermal analysis . 13
5.3 Swivel joints . 13
5.3.1 General . 13
5.3.2 Product sealing arrangement .14
5.3.3 Bearing system .14
5.3.4 External sealing arrangement.14
5.3.5 Design . .14
5.4 Structural bearings . 15
5.4.1 Design . 15
5.4.2 Protection of structural bearings .16
5.4.3 Grease sampling point .16
5.5 Accessories .16
5.5.1 Adjustable support (jack) .16
5.5.2 Product purge gases injection line .16
5.5.3 Stowing locking device .16
5.5.4 Ladders and platforms .17
5.5.5 Vapour recovery lines .17
5.5.6 Liquid nitrogen line .17
5.5.7 Ice fall protection .17
5.5.8 Process connections .17
5.5.9 Drain connection .17
5.5.10 Vacuum insulation .17
5.6 Welding . .18
5.7 Corrosion protection and embrittlement protection .18
5.7.1 Corrosion protection .18
5.7.2 Embrittlement protection .18
5.8 Maintenance .18
6 Safety systems . 19
6.1 General .19
6.2 Two stage alarm and shutdown system .19
6.2.1 First stage .19
6.2.2 Second stage .19
6.3 M onitoring and alarm systems . 20
6.3.1 Alarm envelopes . 20
6.3.2 Arm positioning alarms system . 20
6.3.3 Arm constant position monitoring system (CPMS) . 20
6.3.4 Pressure and hydraulic level alarm . 20
6.4 ERS . 20
6.4.1 General . 20

iii
6.4.2 Design of the ERS .21
6.4.3 Safety devices on the ERS . .21
6.5 Safety devices . 22
6.5.1 Fire safety requirements . 22
6.5.2 Electrical safety requirements . 22
6.5.3 Failure of power supply . 23
6.5.4 Stray current protectors . 23
6.5.5 Bonding . 23
6.5.6 Safety for liquid oxygen. 23
7 Connection with the ship .24
7.1 General .24
7.2 Design of QCDC .24
7.3 QCDC system .24
7.4 Flange cover . 25
8 Hydraulic and electric control systems .25
8.1 General .
...