Section 12 Cargo temperatures
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 4 Ship Structures (Ship Types) - Chapter 9 Double Hull Oil Tankers - Section 12 Cargo temperatures

Section 12 Cargo temperatures

12.1 General

12.1.1 This Section applies to the carriage of heated and low temperature cargoes in vessels having a structural configuration as shown in Table 9.1.3 Structural arrangement and Figure 9.11.1 Structural configuration.

12.2 Loading and carriage of heated cargoes

12.2.1 Where cargoes are to be loaded or carried at temperatures above 80°C, temperature distribution investigations and thermal stress calculations are to be submitted. These are to be carried out using the highest cargo temperature during any part of the voyage, including loading and unloading.

12.2.2 The calculations are to give the resultant stresses on the hull structure, based on a sea temperature of 0°C and an air temperature of 5°C. Any proposals for reinforcement of the hull structure and/or limitation of the still water bending moment for heated cargo conditions are to be submitted.

12.2.3 Submitted proposals are to take account of non-uniform loading patterns with resultant variations in temperature distribution, where applicable.

12.3 Low temperature cargoes

12.3.1 The hull structural and engineering systems permit cargoes to be loaded down to –10°C. For low temperature operations, see Pt 8 Rules for Ice and Cold Operations and the Rules for the Winterisation of Ships, July 2022.


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