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Interim Requirements for Ships Carrying Liquefied Hydrogen.
**Summary for Indian Seafarers: Interim Requirements for Ships Carrying Liquefied Hydrogen**
Applicable to:
Indian flag ships constructed or modified to carry liquefied hydrogen in bulk
Effective Date:
2023-05-01
Superseded Circulars:
None mentioned
Key Changes and Requirements
1. General Requirements
Indian flag ships carrying liquefied hydrogen should comply with the IGC Code and the annex to IMO interim recommendations MSC.420(97).
- 9.1: SOLAS and IGC Code currently don't provide specific requirements for liquefied hydrogen.
- 9.2: IMO provides interim recommendations for new products before appropriate amendments.
- 9.3: Administrations should establish a tripartite agreement based on a provisional assessment for pilot ships.
- 9.6: Ship-owners should contact DGS and relevant port authorities to work out modalities for signing a tripartite agreement.
- 9.7: Interim requirements apply only to a specific pilot project ship.
II/4 Annexure to MS Notice 06 of 2023
2. Special Requirements
Special requirements related to hazards of liquefied hydrogen are listed in the Annexure to MS Notice 06 of 2023.
- 4.1: Hazards include low ignition energy, wide flammability limits, low visibility of flames, high flame velocity, low temperature, high permeability, low viscosity, and hydrogen embrittlement.
- 4.2: Low temperature hazards should be considered, including selection of appropriate materials.
Important Note
Ship-owners and operators should familiarize themselves with the interim requirements and work closely with DGS and port authorities to ensure safe carriage of liquefied hydrogen.
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