9.5 Special categories
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1216 – Revised Recommendations on the Safe Transport of Dangerous Cargoes and Related Activities in Port Areas – (26 February 2007) - Annex - Revised Recommendations on the Safe Transport of Dangerous Cargoes and Related Activities in Port Areas - 9 Liquid Bulk Dangerous Cargoes (Including Liquefied Gas) - 9.5 Special categories

9.5 Special categories

Parent topic: 9 Liquid Bulk Dangerous Cargoes (Including Liquefied Gas)

9.5.1 Excess pressure in tanks containing liquefied gas

  9.5.1.1 The master of a ship and berth operator within their respective areas of responsibility should ensure that excess pressure does not develop in the tanks containing liquefied gas under pressure in the ship or on the berth . Where appropriate, the surroundings should be cooled by whatever means are available, including the use of water spray.

9.5.2 Refrigerated liquefied gas

  9.5.2.1 The master of a ship , the port authority and berth operator within their respective areas of responsibility should ensure that the loading or unloading of liquefied gas at low temperature is only carried out if:

  • .1 all relevant shore and ship tanks, pipelines , loading arms and relevant ships’ piping are gradually and evenly cooled to prevent thermal stress;

  • .2 all automatic controls, gas detectors and other associated instruments are in working order; and

  • .3 suitable protective equipment and clothing is available and used as appropriate.

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