Section 2 - Description of the ship’s equipment and arrangements
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Conventions - MARPOL - International Convention for the Prevention of Pollution from Ships - Annex II of MARPOL 73/78Regulations for the Control of Pollution by Noxious Liquid Substances in Bulk - Appendix 4 - Standard Format for the Procedures and Arrangements Manual - Section 2 - Description of the ship’s equipment and arrangements

Section 2 - Description of the ship’s equipment and arrangements

  2.1 This section contains all particulars of the ship’s equipment and arrangements necessary to enable the crew to follow the operational procedures set out in sections 3 and 4.

  2.2 General arrangement of ship and description of cargo tanks

This section shall contain a brief description of the cargo area of the ship with the main features of the cargo tanks and their positions.

Line or schematic drawings showing the general arrangement of the ship and indicating the position and numbering of the cargo tanks and heating arrangements shall be included.

  2.3 Description of cargo pumping and piping arrangements and stripping system

This section shall contain a description of the cargo pumping and piping arrangements and of the stripping system. Line or schematic drawings shall be provided showing the following and be supported by textual explanation where necessary:

  • .1 cargo piping arrangements with diameters;

  • .2 cargo pumping arrangements with pump capacities;

  • .3 piping arrangements of stripping system with diameters;

  • .4 pumping arrangements of stripping system with pump capacities;

  • .5 location of suction points of cargo lines and stripping lines inside every cargo tank;

  • .6 if a suction well is fitted, the location and cubic capacity thereof;

  • .7 line draining and stripping or blowing arrangements; and

  • .8 quantity and pressure of nitrogen or air required for line blowing if applicable.

  2.4 Description of ballast tanks and ballast pumping and piping arrangements

This section shall contain a description of the ballast tanks and ballast pumping and piping arrangements.

Line or schematic drawings and tables shall be provided showing the following:

  • .1 a general arrangement showing the segregated ballast tanks and cargo tanks to be used as ballast tanks together with their capacities (cubic metres);

  • .2 ballast piping arrangement;

  • .3 pumping capacity for those cargo tanks which may also be used as ballast tanks; and

  • .4 any interconnection between the ballast piping arrangements and the underwater outlet system.

  2.5 Description of dedicated slop tanks with associated pumping and piping arrangements

This section shall contain a description of the dedicated slop tank(s), if any, with the associated pumping and piping arrangements. Line or schematic drawings shall be provided showing the following:

  • .1 which dedicated slop tanks are provided together with the capacities of such tanks;

  • .2 pumping and piping arrangements of dedicated slop tanks with piping diameters and their connection with the underwater discharge outlet.

  2.6 Description of underwater discharge outlet for effluents containing Noxious Liquid Substances

This section shall contain information on position and maximum flow capacity of the underwater discharge outlet (or outlets) and the connections to this outlet from the cargo tanks and slop tanks. Line or schematic drawings shall be provided showing the following:

  • .1 location and number of underwater discharge outlets;

  • .2 connections to underwater discharge outlet;

  • .3 location of all seawater intakes in relation to underwater discharge outlets.

  2.7 Description of flow rate indicating and recording devices

Deleted

  2.8 Description of cargo tank ventilation system

This section shall contain a description of the cargo tank ventilation system.

Line or schematic drawings and tables shall be provided showing the following and supported by textual explanation if necessary:

  • .1 the Noxious Liquid Substances the ship is certified fit to carry having a vapour pressure over 5 kPa at 20°C suitable for cleaning by ventilation to be listed in paragraph 4.4.10 of the Manual;

  • .2 ventilation piping and fans;

  • .3 position of the ventilation openings;

  • .4 the minimum flow rate of the ventilation system to adequately ventilate the bottom and all parts of the cargo tank;

  • .5 the location of structures inside the tank affecting ventilation;

  • .6 the method of ventilating the cargo pipeline system, pumps, filters, etc; and

  • .7 means for ensuring that the tank is dry.

  2.9 Description of tank washing arrangements and wash water heating system

This section shall contain a description of the cargo tank washing arrangements, wash water heating system and all necessary tank washing equipment.

Line or schematic drawings and tables or charts showing the following:

  • .1 arrangements of piping dedicated for tank washing with pipeline diameters;

  • .2 type of tank cleaning machines with capacities and pressure rating;

  • .3 maximum number of tank cleaning machines which can operate simultaneously;

  • .4 position of deck openings for cargo tank washing;

  • .5 the number of cleaning machines and their location required for ensuring complete coverage of the cargo tank walls;

  • .6 maximum capacity of wash water which can be heated to 60°C by the installed heating equipment; and

  • .7 maximum number of tank cleaning machines which can be operated simultaneously at 60°C.

Parent topic: Appendix 4 - Standard Format for the Procedures and Arrangements Manual
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