Section 7 Equipment and systems – Winterisation A

7.1.1 In addition to the requirements in Ch 1, 6 Equipment and systems – Winterisation B for Winterisation B, the following requirements are to be complied with.

7.2.1 Hydraulic piping at exposed locations is to be protected against the fluid freezing in the piping by thermal insulation or provided with heating arrangements.

7.3.1 In conjunction with Ch 1, 5.6 Winterisation of electrical installations 5.6.7, all exposed cables are to be provided with steel covers, including cabling to the equipment or component. All cable covers are to be arranged so they can be drained of condensate, see Ch 1, 5.4 Winterisation of auxiliary machinery systems and deck working areas 5.4.2.

7.4.1 In conjunction with Ch 1, 5.7 Winterisation of emergency appliances 5.7.2, heating arrangements are to be provided for hydrants in exposed locations and the fire main is to be arranged to provide continuous circulation.

7.4.2 In conjunction with Ch 1, 5.7 Winterisation of emergency appliances 5.7.11, lifeboat windows are to be provided with heating arrangements.

7.4.3 In conjunction with Ch 1, 5.7 Winterisation of emergency appliances 5.7.12, the cooling system for the lifeboat engines is to be provided with suitable anti-freeze and heating arrangements.

7.5.1 In addition to Table 1.3.1 List of equipment and components and Table 1.5.1 Space heating arrangements for Winterisation C(t) , an additional heater(s) is to be provided from a separate system, e.g. a steam and an electric heating system, or two electric (or steam) heating systems, with separate cabling (piping) and source, in the following spaces:

1. under-deck passageways (where fitted, to allow alternative access to bow spaces which are adjacent to exposed external boundaries);

2. generator room(s);

3. steering gear room;

4. cargo pump-room;

5. oil discharge monitoring equipment (ODME) room;

6. compressor and motor rooms (where fitted);

7. fire-fighting equipment store room (including location of the fireman’s outfit); and

8. emergency fire pump-room.

7.5.2 A centralised location, for congregation of the crew during a prolonged emergency situation such as ice entrapment, is to be provided with heating arrangements powered by the emergency source.

7.5.3 For the main engine and auxiliary machinery spaces, as well as podded propulsion or azimuth thruster space(s), one of the following is to be complied with:

1. heating arrangements are to be powered from the emergency source (to provide for start-up of the main engine systems);

2. means are to be provided for starting and control of the main propulsion system at the lowest internal air temperature;

3. two boilers, main engines or main propulsion systems are to be provided in separate compartments.

7.5.4 The Master’s and Senior Officer’s cabin windows are to have heating arrangements if they have a view over the cargo deck. See also Ch 1, 5.8 Winterisation of spaces/compartments 5.8.8 for other suitable arrangements.

7.6.1 In conjunction with Ch 1, 5.10 Winterisation of tanks 5.10.2, the tank heating is to be considered an essential service. Electrical arrangements are to be duplicated such that a failure will not result in the loss of the ability to provide heating required for safety of the ship, see Pt 6, Ch 2, 5 Supply and distribution of the Rules and Regulations for the Classification of Ships, July 2022. Where a power-driven motor pump is provided for transferring the heating medium, a standby pump is to be provided and connected for ready use or, alternatively, emergency connections may be made to one of the unit pumps or another suitable power driven pump.