Section 11 Ice removal arrangements – Winterisation IR

11.1 Application

11.1.1 The following requirements are intended to provide protection from ice accretion through the provision of additional measures such as heating and covers.

11.2 Information required

11.2.1 Details of the heating arrangements and ice removal measures, as well as any operational procedures, are to be submitted, see Ch 1, 1.3 Information required 1.3.2.

11.2.2 An ice removal manual is to be placed on board the ship highlighting the equipment and features installed and any operational procedures.

11.2.3 Design appraisal, testing and survey is to be in compliance with Ch 1, 13 Design appraisal, installation, testing and survey.

11.3 Definitions

11.3.1 Ice removal measures. In addition to the measures in Ch 1, 1.4 Definitions 1.4.7, heating arrangements, as given in Ch 1, 1.4 Definitions 1.4.6, are to be considered in conjunction with the requirements of this Section.

11.4 Ice removal provisions

11.4.1 Where heating arrangements are provided, they are to comply with the requirements in Ch 1, 5.1 General 5.1.3.

11.4.2 In general, the items as given in Table 1.11.1 Ice removal arrangements are to be complied with, considering the ship type and arrangement.

Table 1.11.1 Ice removal arrangements

Component	Applicable winterisation requirement		See Rule reference
Winterisation of main propulsion and essential auxiliary engines
Air intakes and exhaust louvres	The air intakes and exhaust louvres for machinery spaces are to be provided with protection from icing by ice removal measures and heating arrangements		Ch 1, 5.8 Winterisation of spaces/compartments 5.8.6
Winterisation of auxiliary machinery systems and deck working areas
Exposed fittings	Valves, gauges, indicators and monitoring equipment for essential services are to be protected from icing and provided with ice removal measures or by covers where ice removal measures are not suitable. Exposed valves at inaccessible locations are to be provided with covers or positioned in heated cabinets (by means of a heated frame or internal space heating). Gauges, indicators and monitoring equipment which are sited in exposed locations but are unsuitable for removal of ice are to be positioned in heated cabinets. Valve actuators, solenoids and pressure gauge transmitters for essential services are to be provided with heating arrangements		Ch 1, 5.5 Winterisation of anchoring/mooring equipment and deck cranes 5.5.4
Winterisation of anchoring/mooring
Protection	Anchor windlass and mooring winches are to be protected from icing by means of suitable covers. Alternatively, a sheltered deck area is to be provided		Ch 1, 5.5 Winterisation of anchoring/mooring equipment and deck cranes 5.5.1
Control panels	Exposed control panels are to be provided with suitable steel covers to protect against icing		Ch 1, 5.5 Winterisation of anchoring/mooring equipment and deck cranes 5.5.2
Hydraulic equipment	For hydraulically operated equipment and systems, steam ice removal measures are to be provided for protection against icing		Ch 1, 5.5 Winterisation of anchoring/mooring equipment and deck cranes 5.5.7
Hawse pipe	The hawse pipe is to be sited in a heated space or provided with suitable heating arrangements and deck steam connection valve(s) located within the vicinity to protect against icing		Ch 1, 5.5 Winterisation of anchoring/mooring equipment and deck cranes 5.5.8
Winterisation of electrical installations
Emergency generator	The emergency generator room air intakes are to be provided with protection from icing by ice removal measures or heating arrangements. In addition, the air intake is to be provided with an automatic louvre which closes whilst the generator is inactive (to reduce heat loss), and opens when starting		Ch 1, 5.6 Winterisation of electrical installations 5.6.4
Radar	Protection measures are to be fitted for the continuous operation of the radar motors against the humidity and icing freezing the motor. Radar motors are to be provided with heating arrangements and with the provision for suitable use of low temperature grease		Ch 1, 5.6 Winterisation of electrical installations 5.6.10
Air horn	Measures for continuous operation of the navigation air horn, where fitted, are to be provided to protect against humidity freezing in components and icing and suitable heating arrangements are to be provided. Air pipe lines for the navigation air horn are to be arranged in heated compartments as far as practicable		Ch 1, 5.6 Winterisation of electrical installations 5.6.11
Antenna systems	Antenna systems are to be protected from icing		Ch 1, 5.6 Winterisation of electrical installations 5.6.15
Winterisation of emergency appliances
Fire-fighting	Isolating valves and hydrants are to be provided with ice removal measures		Ch 1, 5.7 Winterisation of emergency appliances 5.7.2
Protected locations	As far as practicable, lifeboats and liferafts are to be located in protected locations (recesses or garages) to provide protection from icing		Ch 1, 5.7 Winterisation of emergency appliances 5.7.9
Lifeboat winches	Lifeboat winches, where fitted, are to be provided with suitable covers or ice removal measures. The operating devices (brake(s)) are to be protected from icing by ice removal measures, suitable grease and lubricants with covers or heating arrangements. Hydraulic systems, including tanks, pipes and mechanisms, are to be provided with suitable steam ice removal measures, suitable grease and lubricants or heating arrangements		Ch 1, 5.7 Winterisation of emergency appliances 5.7.13
Lifeboat davits	Lifeboat davits/sheaves/release hooks are to have provision for the use of suitable low temperature grease, covers and heating arrangements, to protect the mechanisms from icing		Ch 1, 5.7 Winterisation of emergency appliances 5.7.14
Life rafts	A steam connection for ice removal measures is to be provided for protection against icing of the life raft. Davit-launched life rafts are to comply with 5.7.14		Ch 1, 5.7 Winterisation of emergency appliances 5.7.18
EPIRB	Ice removal measures are to be provided for the EPIRB/SART		Ch 1, 5.7 Winterisation of emergency appliances 5.7.19
Winterisation of spaces/compartments
Air intakes and exhaust louvres	The air intakes and exhaust louvres for accommodation spaces are to be provided with protection from icing by ice removal measures and heating arrangements		Ch 1, 5.8 Winterisation of spaces/compartments 5.8.6
Bridge windows	All bridge windows (excluding door windows) are to be fitted with heating arrangements to provide protection against the build-up of ice obscuring visibility. The use of hot air blowers inside is to be provided for all windows. Consideration is to be given to fitting double-glazed windows in order to provide protection against cold water cracking glass which is exposed to warm internal conditions		Ch 1, 5.8 Winterisation of spaces/compartments 5.8.8
Bridge window cleaning system	The system for window cleaning is to be protected against freezing in the lines and clogging of the nozzles with frequent operation. Cold fresh water systems with heated spray nozzles, or hot water systems which can be drained and dry air blown through after use, are to be provided. Window wiper operating devices are to be arranged inside the bridge or to be provided with heating arrangements. Safe access is to be provided externally for ice removal		Ch 1, 5.8 Winterisation of spaces/compartments 5.8.9
Bridge wing controls	Measures to protect personnel operating on the bridge from cold temperatures are to be provided. Where ships have exposed bridge wings, the wing controls/equipment are to be provided with heating arrangements and covers		Ch 1, 5.8 Winterisation of spaces/compartments 5.8.10
Winterisation of accommodation and escape routes
Accommodation and escape routes	Measures are to be provided to assist in the opening of doors when covered in ice and to protect seals against freezing. External doors are to be positioned in protected locations or recessed as far as practicable to provide protection from icing. The enclosed space adjacent to external doors on escape routes is to be fitted with heating arrangements		Ch 1, 5.9 Winterisation of accommodation and escape routes 5.9.1
Winterisation of tanks
Tanks vent pipe heads	Measures to provide protection from icing and blockage by ice formation resulting from humidity in tanks are to be fitted. Exposed air vent pipe heads of tanks are to be readily accessible, positioned in protected locations as far as practicable and fitted with covers to limit build-up of ice. The covers are not to interfere with the free flow of air through the vent openings		Ch 1, 5.10 Winterisation of tanks 5.10.5
Ice removal equipment and prevention measures
Ice removal	The following areas of exposed decks are to be provided with:		Ch 1, 5.11 Ice removal and prevention measures 5.11.1
	(a)	heated decks;
	(b)	gratings;
	(c)	checkered plate;
	(d)	welded studs; or
	(e)	non-slip decking with coarse sand embedded into the paint
	In addition, ice removal measures are to be installed of either steam or hot water types with a fixed pipeline on the deck with connection valves for hoses in the following areas:
	(i)	Gangways and stairways for safe access to bow, lifeboats, rescue boats and pilot boarding locations;
	(ii)	Areas adjacent to escape exits;
	(iii)	Areas in way of lifeboats/rescue boats, davits, and life rafts including launching areas;
	(iv)	Adjacent to storage facilities for fire-fighting equipment;
	(v)	Areas in way of anchoring and mooring operations (including windlass, chain and hawse pipe);
	(vi)	Areas in way of anchoring and mooring operations (including windlass, chain and hawse pipe);
	(vii)	Areas for open navigation and lookout;
	(viii)	Helicopter deck areas, where fitted;
	(ix)	Working areas on the open deck (including ice removal measures for hatch covers, containers and grain loading covers)
Protective covers	To aid the removal of ice and protect against the ingress of water into components that may subsequently freeze and result in damage, mechanical and electrical equipment and control panels that may be exposed to icing are to be provided with suitable covers, as far as practicable, and unless other arrangements are specified in these Rules		Ch 1, 5.11 Ice removal and prevention measures 5.11.2
Manual tools	A minimum of the following manual tools for removing ice are to be provided, with at least one set of tools at each storage location. Storage locations should be as given in Ch 1, 5.11 Ice removal and prevention measures 5.11.4. A set of tools is to comprise at least the following:		Ch 1, 5.11 Ice removal and prevention measures 5.11.3
	(a)	3 shovels;
	(b)	3 hammers or mallets; and
	(c)	3 scrapers.
	Storage facilities for the manual tools are to be provided and sited in protected areas, as far as practicable, to provide access and protection from icing behind bulwarks and accommodation walls

11.5 Requirements for oil and/or chemical tankers, LNG and LPG carriers

11.5.1 Ice removal measures are to be installed of either steam or hot water types with a fixed pipeline on the deck with connection valves for hoses in areas designated for control of cargo loading and unloading (including high walkways).

11.6 Requirements for offshore supply vessels

11.6.1 For vessels with a rescue zone, the requirements of Ch 1, 8.3 Winterisation of offshore supply vessels 8.3.3 are to be complied with.

11.7 Requirements for LNG and LPG carriers

11.7.1 The air intakes and exhaust louvres for the spaces as shown in Table 1.8.2 Space heating arrangements for LNG and LPG carriers are to be provided with protection from icing by ice removal measures and heating arrangements.