Section 5 Process plant characteristics
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 7 Other Ship Types and Systems - Chapter 2 Ships with Installed Process Plant for Chemicals, Liquified Gases and Related Products - Section 5 Process plant characteristics

Section 5 Process plant characteristics

5.1 Design

5.1.1 The design and arrangements are to comply with the requirements of this Chapter and with relevant statutory regulations of the National Authority of the country in which the ship or structure is registered and/or in which it is to operate.

5.1.2 The process plant is to be designed for normal operation in accordance with recognised and agreed codes suitably modified to take into account the ship-borne environment in all its aspects. Except for emergency conditions, as detailed in Pt 7, Ch 2, 3.1 General 3.1.3 or Pt 7, Ch 2, 3.1 General 3.1.4, the total stress in any component of the plant is not to exceed the code value at the temperature concerned, unless expressly agreed otherwise by LR, whether the plant is operative or non-operative, when subjected to any possible combination of the following loads:

  1. Static and dynamic loads due to wave-induced ship motions.

  2. Loads resulting from hull flexural effects at the plant support points.

  3. Direct wind loads.

  4. Normal process weights and pressures.

  5. Thermal loads.

5.1.3 For the emergency conditions in Pt 7, Ch 2, 3.1 General 3.1.3 or Pt 7, Ch 2, 3.1 General 3.1.4, the stress levels are to be agreed with LR.

5.2 Separation from ship machinery

5.2.1 Where, during operation, process plant spaces contain or are likely to contain hazardous and/or toxic substances, they are to be kept separate and distinct from the main propulsion and auxiliary machinery and essential ship services, and also the power generating machinery for the process plant.

5.2.2 Notwithstanding the requirements of Pt 7, Ch 2, 5.2 Separation from ship machinery 5.2.1, this does not exclude the use of the ship's main, auxiliary and/or essential services, for process plant operation in suitable cases. Where, for reason of hazard, essential ship services have to be duplicated within the process plant space, they are to comply with the requirements of Pt 7, Ch 2, 9 Pumping and piping systems for the process plant and Pt 5 Main and Auxiliary Machinery and Pt 6 Control, Electrical, Refrigeration and Fire, as applicable.


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