Section 1 General Requirements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 2 Machinery and Engineering Systems - Part 11 Support Systems - Chapter 4 Refrigeration System Arrangements - Section 1 General Requirements

Section 1 General Requirements

Parent topic: Chapter 4 Refrigeration System Arrangements

1.1 General

1.1.1 This Chapter states the requirements for refrigeration system arrangements installed in naval ships.

1.1.2 The requirements in this Chapter cover the arrangements, equipment, piping and control systems necessary for refrigeration system arrangements on board a naval ship.

1.2 Scope

1.2.1 The refrigeration system arrangements in this Chapter cover the following:
  • Refrigeration machinery for distributed chilled water systems.
  • Refrigeration machinery for ventilation cooling.
  • Refrigeration machinery for cool and cold storage rooms.
  • Domestic type self-contained refrigeration units.

Refrigeration machinery for cool and cold rooms and domestic type self-contained refrigeration units rooms need only comply with Vol 2, Pt 11, Ch 4, 4 Refrigerant charge limits, machinery room, and storage arrangements and Vol 2, Pt 11, Ch 4, 6.1 Testing 6.1.4.(a), unless the PRM notation has been assigned.

1.2.2 The distributed chilled water system is to comply with Vol 2, Pt 7, Ch 5, 7 Chilled water systems.

1.2.3 The air-conditioning and ventilation system is to comply with Vol 2, Pt 11, Ch 2 Heating, Ventilation and Cooling Arrangements.

1.2.4 Gas detection systems are to comply with Vol 2, Pt 9, Ch 11 Gas detection.

1.2.5 Ships assigned the PRM notation are to additionally comply with Vol 3, Pt 1, Ch 2 Provision Refrigeration.

1.2.6 Ships assigned the ECO RS notation are to additionally comply with Vol 3, Pt 3, Ch 2, 2.9 Refrigeration systems, RS character.

1.3 Documentation required for design review

1.3.1 Three copies of the plans and information stated in Vol 2, Pt 11, Ch 4, 1.3 Documentation required for design review 1.3.2 to Vol 2, Pt 11, Ch 4, 1.3 Documentation required for design review 1.3.6 are to be submitted to Lloyd’s Register (hereinafter referred to as ‘LR’) as applicable.

1.3.2 System Design Description. A System Design Description of each ship type piping system, seeVol 2, Pt 1, Ch 3, 3.5 System design description.

1.3.3 Systems. Plans in diagrammatic form showing refrigerant and cooling systems, control systems and safeguards and electrical systems covered by this Chapter. Plans are to show pipe sizes, flows and terminal locations. The capacities of fans and pumps are to be included. Capacity tables for different operating conditions for the refrigeration compressors are also to be included.

1.3.4 Compartments. Plans showing the general arrangement of refrigeration plant compartments, together with a description of the equipment and arrangements installed for isolation and distribution of ventilation air and the electrical power supply systems. The plans are to indicate segregation and access arrangements for compartments and associated control rooms/stations.

1.3.5 Testing and trials procedures. A schedule of testing and trials to demonstrate that systems are capable of operating as described in Vol 2, Pt 11, Ch 4, 3 System arrangements and as required by Vol 2, Pt 11, Ch 4, 6 Testing and trials.

1.3.6 Operating manuals. Operating manuals are to be provided on board and submitted for information where requested by LR. The manuals are to include the following information:
  1. Particulars and a description of the systems.
  2. Operating instructions for the equipment and systems (including fire isolation aspects).
  3. Maintenance instructions for the installed arrangements.
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