Section 3 Equipment and systems

301.

General

1. All items such as pipework, components and cables are to be located inside spaces as far as practi- cable to minimize exposure to low temperatures and icing.

2. Each item of equipment and system on the ship is to be protected against the effects of low tem- peratures and build up of ice with the selection of appropriate protection methods. Methods for pro- tecting the equipment and systems include the following:

(1) Heating (space and dedicated arrangements for equipment / systems).

(2) Ice removal equipment.

(3) Covers.

(4) Drainage.

(5) Insulation.

(6) Selection of materials.

(7) Selection of lubricants, oils, hydraulics and greases.

3. Where heating arrangements are provided, they are to be fitted with the following:

(1) Means for ascertaining the temperature.

(2) For systems where heating arrangements could result in excessively high temperatures or pres- sures being generated, that may cause damage, malfunction, loss or effective lubrication or breaking of equipment, arrangements are to be provide which will cut off the heating.

(3) Suitable control arrangements.

(4) Indication that the systems are in use or not.

(5)

Where failure of a heating arrangement could result in a hazardous situation, alarm system is to be activated to allow responsible personnel to prevent the hazardous situation occuring.

For use of electrical heating in dangerous zones, see Pt 6, Ch 1, 103. 5 of the Rules for the Classification of Steel Ships.

4. Where PVC covers or other water resistant materials are used, they are to be well fitting with suit- able fixing to prevent unintended removal in severe weather.

302.

Winterization of tanks

1. Fresh water and sea water ballast tanks situated above the design ballast waterline and adjacent to the shell, which are intended to be used in ice and cold navigating conditions, are to be provided with means to prevent freezing. These measures are to provide protection so that pumping water will not cause a vacuum beneath a layer of ice across the top of the water in the tank, and, are to protect against structural and systems damage from ice expansion. The following tank heating re- quirements are to be complied with:

(1) For Winterization E1(t) :

All tanks entirely above and partially below the waterline are to be provided with heating coils.

(2) For Winterization E2(t) :

Tanks entirely above the waterline are to be provided with heating coils.

Tanks partially below the waterline are to be provided with heating coils or continuous

circulation.

(3) For Winterization E3(t) :

All tanks entirely above and partially below the waterline are to be provided with heating coils, continuous circulation or air bubbling.

2. For tank heating required by 302. monitoring arrangements are to be provided that will activate an alarm in accordance with the alarm system required by Pt 6, Ch 2, 201. of the Rules for the Classification of Steel Ships to allow responsible personnel to reinstate heating in the event of a failure. For Winterization E1(t), 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, 201. of the Rules for the Classification of Steel Ships. 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.

3. Tank systems and components for monitoring and alarms(1st and 2nd stage high level alarm sys- tems, gas detection system etc.) are to be suitable for the lowest design external air temperature.

4. The sewage tanks and associated pipe systems, where located adjacent to external ship boundaries, are to be located in heated compartments or provided with heating arrangement.

5. 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, posi- tioned 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. For Winterization E1(t) and Winterization E2(t) exposed air vent pipe heads are to be a dedicated type suitable for the lowest external design air temperature (with internal heating arrangements).

6. Where ballast tank heating coils are provided as given in 302. 1, a section of the heating coil is to be positioned below the air pipe vent, as far as practicable, to provide protection against freez- ing of the pipe and vent.

7. The overboard ballast discharge line located above the waterline is to be provided with suitable heating arrangements.

303. Winterization of spaces

1. Accommodation heating/air conditioning systems are to be capable of maintaining internal design air temperature in all spaces normally occupied when the ship is at sea, based on the lowest external design air temperature. This may be achieved by controlling the number of air changes providing

acceptable levels of fresh air required for processes. In addition, air intakes are to be measures, or heating arrangements.

personnel efficiency, combustion or other oxidation provided with protection from icing by ice removal

2. The requirements in 303. 1 are intended to mitigate risks associated with the failure to maintain

suitable (and agreed) temperatures associated

with the defined spaces, and do not cover air-con-

ditioning arrangements, air distribution ductwork, heating systems, chilled water systems or the cal- culation and verification of air flow rates and cooling/heating loads within the air-conditioned

spaces. The method used to calculate the capacity of the air-conditioning, refrigeration and heating equipment is the responsibility of the Shipbuilder and Owner and should be in accordance with a recognised code or standard such as ISO 7547:2002 Ships and marine technology - Air con- ditioning and ventilation of accommodation spaces - Design conditions and basis of cal- culations, or ASHRAE 26- 1996(RA2006) Mechanical refrigeration and air-conditioning in- stallations aboard ship.

3. Heating arrangements (in addition to, and not necessarily serviced by, the air-conditioning system as specified in 303.1) are to be provided for spaces containing machinery and equipment for essential or emergency services and for spaces accessed during ship operation in order that equipment may be maintained. Heating arrangements are to be included in, but not limited to, the spaces as given in Table 4.8(where fitted). The heating of each space is to be capable of maintaining its internal design air temperature based on the lowest external design air temperature, insulation and the vol- ume of air in each space. The internal temperature, and lowest limit for alarms, for each space is to be provided (and agreed with the Owner and Shipbuilder), but is to be a minimum of zero de- grees Celsius at the lowest external design air temperature. The space heating required by 303. 1 and 303. 2 is considered an essential service and arrangements are to be duplicated such that a

single failure will not result in loss of the ability to

provide sufficient space heating. Monitoring

arrangements are to be provided that will activate an alarm in accordance with the alarm system

required by Pt 6, Ch 2, 201. of the Rules for the

Classification of Steel Ships to allow re-

sponsible personnel to reinstate heating in the event of a failure. For Winterization E1(t) and E2(t), the heating source is regarded as an essential service and requires two heating sources.

4. In addition to Table 4.8, for Winterization E1(t) a centralized location for survival is to be pro- vided with heating arrangements powered by the emergency source and an additional heater(s) is to be provided from a separate system, e.g. a steam and electric heating system, or two electric (or steam) heating systems are provided with separate cabling (piping) and source, in the following spaces:

(1) under-deck passageways (where fitted, to allow alternative access to bow spaces and 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 fireman’'s outfit) and

(8) emergency fire pump room

5. In

addition to Table 4.8, for Winterization E1(t) and E2(t) the main engine and auxiliary machi-

nery spaces, as well as podded propulsion or azimuth thrusters space(s) are to be provided with multiple portable heaters. In addition, for Winterization E1(t) one of the following is to be com-

plied 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 start and control of the main propulsion system at the lowest in ternal air temperature

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

6. For Winterization E3(t) the following spaces may be provided with portable heating arrangements,

in lieu of the requirements for the spaces as given in Table 4.8 :

(1) observation/security cabins (where fitted)

(2) enclosed forecastle/sheltered deck (where fitted)

(3) podded propulsion or azimuth thruster spaces and

(4) cargo control room.

7. Means of regulating the engine room temperature are to be provided. Where machinery space fun- nel louvers are fitted, these are to be capable of being adjusted to different open positions. The means of regulating temperature is not to prevent air supply or exhaust to machinery or machinery spaces required for operation.

8. Pipework and electrical components in and passing through spaces and tanks, without space heating and which are exposed to low temperatures, such as void spaces and underdeck passageways, are to be suitable for the lowest external design air temperature or have suitable heating arrangements to protect against the low temperature.

9. The air intakes and exhaust louvers for accommodation and machinery spaces are to be provided with protection from icing by ice removal measures or and heating arrangements. For LNG carriers, this is to include the cargo room and motor room intakes.

10. All For Winterization E1(t) and Winterization E2(t), all cargo control room windows are to be fit- ted with heating arrangements to provide protection against the formation of ice obscuring visibility during discharging/loading operations. See also 303. 12 for other suitable arrangements. For Winterization E3(t), ice removal measures are to be provided.

11. For Winterization E1(t), the Masters and Senior Officers cabin windows are to have heating ar-

rangements if they have a view over the cargo deck. See also arrangements.

12. All bridge windows (excluding door windows) are to be fitted with

303. 12 for other suitable

heating arrangements to pro-

vide protection against the build up of ice obscuring visibility. The use of hot air blowers on the

inside is to be provided for all windows may be considered for Winterization E3(t) in lieu of using low temperature thermally heated glass. Low temperature thermally heated glass is to be provided for Winterization E1(t) and Winterization E2(t). 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.

13. 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 wa- ter systems designed are to 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 heat- ing arrangements. Safe access is to be provided externally for ice removal.

14. 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. For Winterization E1(t) and Winterization E2(t) the bridge wings

are to be fully enclosed.

Table 4.8 Space heating arrangements for Winterization levels E1(t), E2(t) and E3(t)

304. Winterization of accommodation and escape routes

1. Measures are to be provided to assist in the opening of doors when covered in seals against freezing. External doors are to be positioned in protected locations

ice and to protect or recessed as far

as practicable to provide protection from icing. The enclosed space adjacent to external doors on

escape routes are to be fitted with heating arrangements. For Winterization E1(t) and Winterization E2(t), a dedicated heated airlock space or heating around the door frame is to be provided for such

doors and the door seals are to be suitable for low temperature conditions.

2. Suitable changing rooms are to be arranged to provide adequate space for changing into and out of cold weather working clothing adjacent to the entrance door. A heated space is to be provided for drying and storing cold weather working clothing.

3. For Winterization E1(t) and E2(t) above deck walkways under-deck passageways, where fitted, to allow alternative access to bow spaces and which are adjacent to exposed external boundaries are to be provided with heating arrangements, as far as practicable.

4. Measures are to be provided to reduce the likelihood of damage to insulation fitted to exposed ex- ternal boundaries caused by humidity freezing within it. In particular the accommodation bulk- head/deck insulation is to be fitted with a protective vapour barrier such as aluminium foil or equivalent means.

5. To protect against fluids freezing, cabin bathrooms are not to be located adjacent to exposed ex-

ternal boundaries, as far as practicable. Insulation is and heating arrangements are to for all exposed external boundaries in bathrooms and washrooms to prevent freezing these spaces.

be provided of water in

6.

7.

305.

Means such as a gutter and drainage on the deck below to collect condensed water are to be pro- vided adjacent to external boundaries.

For Winterization E1(t) and E2(t) external hand rails on routes as given in 304. 3, stairways and ladders are to be fitted with trace heating arrangements to provide access to main working areas and escape routes. Arrangements are to be fitted to automatically cut off in the event of ex- cessively high temperatures to prevent injury when in contact.

Ice removal and prevention measures

1. The following areas of exposed decks are to be provided with ice prevention measures one of heat- ed decks, gratings, checkered plate, welded studs or non-slip decking with coarse sand embedded into the paint. In addition ice removal measures are to be installed, either steam or hot water types with a fixed pipe line on the deck with connection valves for hoses.

(1) Gangways and stairways for safe access to bow, lifeboats, rescue boats and pilot boarding loca- tions, refer to also 304. 3.

(2) Areas adjacent to escape exits.

(3) Areas in way of lifeboats/rescue boats, davits, and liferafts including launching ares.

(4) Adjacent to storage facilities for fire fighting equipment.

(5) Areas in way of anchoring and mooring operations(including windlass, chain and hawse pipe).

(6) Areas for open navigation and lookout.

(7)

For tankers, areas designated for control of cargo loading and unloading(including high walk ways).

(8) Helicopter deck areas, where fitted.

(9)

2. To

Working areas on the open deck(including ice removal measures for hatch covers, containers and grain loading covers).

aid the removal of ice and protect against the ingress of water into components that may sub-

sequently 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. For Winterization E1(t) and E2(t), mechanical and electrical control panels are to be provided with steel covers as far as practicable.

3. 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 305. 4. A set of tools is to comprise at least the following:

(1) shovels

(2) hammers or mallets

(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.

4. Containers for the storage of de-icing compounds are to be provided at the following locations as a minimum:

(1) Bow area

(2) Close to midships with port and starboard access, and close to the boarding area

(3) Stern area (close to the life saving launching areas)

Containers are to be sited in protected areas, as far as practicable, to provide access and protection from icing behind bulwarks and accommodation walls.

5. For ships with a rescue zone, suitable arrangements are to be provided to protect against ice freez- ing:

(1) on a cross deck area between the rescue zones port and starboard;

(2) the sides and railings in the rescue zone; and

(3) routes to the accommodation/treatment areas.

306.

winterization of anchoring/mooring equipment and deck cranes

1. 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. See also 305. 1. (5) for ice removal

measures.

2. Exposed control panels are to comply with the following:

(1) For Winterization E3(t) suitable steel covers are to be provided to protect against icing.

(2) For Winterization E1(t) and Winterization E2(t) control panels are to be fitted in heated steel covers to protect against icing and components freezing.

3. Measures are to be provided to protect against freezing of fluids, such as lubricants and hydraulic oil. The fluids are to be suitable for low temperature operation, and heating arrangements are to be provided where appropriate.

4. Hydraulic control systems are to comply with 309.

5. Electrical installations are to comply with 310.

6. 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.

7. For hydraulically operated equipment and systems, steam ice removal measures are to be provided for protection against icing.

8. Hawse pipe wash lines are to be provided with continuous circulation or heating arrangements to measures to protect against water in the pipes freezing. A steam connection on deck for ice re- moval is to be located within the vicinity.

9. Means are to be provided for habitable working conditions in crane cabs, where fitted, by provid- ing internal space heating arrangements. Cab windows are to be provided with heating arrangements to protect from the build up of ice, refer to 303. 13. Ice removal measures are to be provided to protect against icing. Window wiper operating devices are to be arranged inside the cab or to be provided with heating arrangements.

10. Suitable provisions for cold start arrangements for exposed deck cranes are to be provided.

Suitable lubrication oils and greases, circulation facilities for hydraulic oils and a flushing system for the hydraulic oil are to be provided.

11. Material grades for lifting appliances are to be in accordance with th Pt 9, Ch 2, Sec 1 of the Rules for Classification of Steel Ships and suitable for operation at the average external design air temperature.

12. Material grades for towing and mooring equipment, fittings and components are to be suitable for operation at the average external design air temperature.

307.

General winterization requirements of machinery

1. Main and essential auxiliary machinery and equipment installed on the open deck is to be capable of operating satisfactorily under the conditions of the lowest external design air temperature, refer to also 105. 2.

2. Main and essential auxiliary machinery and equipment installed in spaces is to be capable of oper- ating satisfactorily under the conditions of the design internal air temperature/ambient conditions for that space, see also 105. 2 and Pt 5, Ch 1, 103. of the Rules for Classification of Steel Ships.

3. Dedicated heating arrangements may be provided to ensure the satisfactory operation of equipment and machinery required by Par 1 and 2.

4. The requirements of Par 1 and 2 are to include machinery and equipment for emergency appli- ances, including navigational aids required by statutory regulations.

308.

1.

2.

Winterization of main propulsion and essential auxiliary engines

The arrangements for air supply to main propulsion and essential auxiliary engines are to ensure that the engine manufacturer's specification for minimum air intake temperature is complied with. Such arrangements may comprise pre-heating at the air intakes or use of heated engine room air, or other means such as scavenge air cooler bypass or exhaust gas bypass. The main engine lu- brication oil is to be maintained at a minimum temperature in accordance with the manufacturer’'s specification.

The Sea inlets for the cooling water system is are to be provided with arrangements to maintain ice free cooling water arrangements as given by IMO Guidance on Design and Construction of Sea Inlets under Slush Ice Conditions MSC/Circ.504 or in accordance with Ch 1, 702. Alternative arrangements will be considered, such as by circulating engine cooling water via des- ignated tanks where heat balance calculations have demonstrated that the engines are capable of op- erating at their maximum continuous rating.

3. Electrical and hydraulic systems for podded or azimuth propulsion systems are to be provided with suitable provisions to prevent freezing. Heating arrangements and/or suitable lubrication oils, hy- draulic oils and anti-freeze are also to be provided.

4. Electrical and hydraulic systems for steering systems are to be provided with suitable provisions to prevent freezing. Heating arrangements and/or suitable lubrication oils, hydraulic oils and anti-freeze are also to be provided.

5.

309.

1.

2.

Steering gear components are to be provided with suitable low temperature greases and lubrication oils.

Winterization of auxiliary machinery systems and deck working areas

Materials for components of exposed pipe work on deck are to be suitable for operation at the average external design air temperature or the components are to be provided with suitable heating arrangements.

Systems are to be arranged to ensure they can be drained to protect against fluids freezing in pipes. Drainage valves are to be provided and pipe work included to ensure drainage of fluids is possible under all normal angles of list and trim. As a minimum, drain valves are to be provided at forward, aft, port and starboard locations. Additional shut off valves are to be installed on the branch pipes (and as close to the main line as practicable) to allow drainage and protection against freezing in branch pipes when the main line is under pressure and branch lines are not in use.

3. Measures for protection against freezing of condensate in exposed steam pipe work are to be fitted with thermal insulation and/or connections for dry air to be blown through. Steam deck machinery is to be provided with measures for the continuous circulation of steam.

4. 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.

5. Where no heating arrangements are provided, valves, gauges, indicators and monitoring equipment for essential services are to be suitable for the lowest external design air temperature.

6. For Winterization E1(t), 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. Exposed control stand valves for hydraulic oil lines used for remote control are to be provided with heating arrangements to protect against freezing of the mechanism.

8. As far as practicable, hydraulic oil power packs are to be sited in heated enclosed spaces. Where

this is not practicable, the hydraulic fluid and pipework system materials are to be suitable for op- eration at the lowest design external air temperature. In addition, for Winterization E1(t) and E2(t), heating is to be provided under the bottom of the hydraulic oil tank.

9. Measures to protect against water freezing in exposed fresh water and sea water pipes and valves are to be fitted. Exposed sections of seawater and freshwater lines are to be fitted with an isolating

valve located inside a heated

space such that the exposed length may be drained. And a drain

valve is to be provided at the lowest position on deck, and an air blow connection provided at the

furthest forward end to keep

the line dry after use. Alternatively, heating arrangements or con-

tinuous circulation is to be provided.

10. Arrangements are to be provided to protect against oil fuel within exposed pipes from freezing.

For Winterization E1(t) and E2(t), the exposed oil fuel filling and transfer lines, and any sludge transfer lines are to be fitted with thermal insulation and trace heating arrangements.

11. For oil and/or chemical tankers, arrangements are to be provided to protect against cargo fluids, as stated in the Certificate of Fitness Cargo List and Notes, within exposed pipes from freezing. For Winterization E1(t) and E2(t), the exposed deck cargo and stripping lines are to be fitted with thermal insulation. and suitable trace heating arrangements.

12. For oil and/or chemical tankers, arrangements are to be provided to protect against cargo fluids within exposed small bore pipes from freezing. Measures are to be provided for exposed cargo drain and pressure gauge lines to be protected against freezing and exposed lines are to be pro- vided with heating arrangements.

13. For oil and/or chemical tankers, where exposed inert gas components such as the deck seal and pressure/vacuum breakers are fitted, measures are to be provided to protect against liquid filled components from freezing. Provision is to be made for heating arrangements or the use of suitable antifreeze. Components are to be readily accessible and grouped together as far as practicable, to assist in ice removal. In addition, the deck seal is to be provided with heating arrangements. Heating arrangements and insulation are to be provided for exposed water supply and discharge lines to the deck water seal, or thermally insulated with continuous circulation. Thermal insulation is to be provided for drainage lines. The non-return valve for the deck water seal is to be provided with suitable drainage and a manual control/handle for testing. For Winterization E1(t) and E2(t),

the pressure/vacuum breakers are to be suitable for the lowest external design and/or provided with heating arrangements. The cooling water system for inert gas

air temperature scrubber pumps

is to be provided with suitable arrangements to protect against freezing, see also 308. 2.

14. For offshore supply ships, cargo lines for liquid tanks or bulk cargo tanks are to be provided with suitable drainage and connections for dry air to be blown through, see also 309. 2.

15. Measures are to be provided to protect against humidity freezing the supply of air to pneumatic devices used on deck. They are to be designed for specified dew point, or be provided with air driers, or suitable heating arrangements. For Winterization E1(t) and E2(t), the air supply is to be both dry and heated. A drain valve is to be provided at the lowest point of the line on the ex- posed deck.

16. Where sea chests are fitted other than for the main propulsion system as specified in 308. 2, such as ballast sea chests located in the pump room, these are to be provided with a sea bay and heating arrangements, for ice clearing. Steam blowing may be used or similar arrangements as giv- en in 308. 2.

17. The sea inlet and overboard discharge valves are to be provided with low pressure steam con- nection for clearing purposes, see Pt 5, Ch 6, Sec 3 of the Rules for the Classification of Steel Ships. Alternatively, arrangements are to be made for supplying water for machinery cooling purposes by circulating from ballast tanks or those situated in the double bottom. Such tanks must be used only for storage of water ballast or fresh water.

18. For Winterization E1(t) and E2(t), exposed expansion pieces, where fitted, are to be protected from the build up of ice by provision of approved bellows units.

19. Overboard discharge valves at or below the waterline are to be provided with low pressure steam connections for clearing purposes.

20. Where observation/security cabins are fitted, suitable heating arrangements are to be provided for the internal space and also for windows, see 303. 2 and 303. 8. Ice removal measures are to be

provided to protect against icing forming on the windows.

21. The equipment and systems for accommodation and pilot ladders are to comply with the require- ments in 303, where applicable.

22. To prevent freezing of exposed cargo securing arrangements, they are to be of suitable material for the lowest design air temperature, provided with suitable low temperature grease and with ice removal measures.

23. To protect against freezing, the Oil Discharge Monitoring Equipment (ODME) is to be provided with heating arrangements on exposed supply/discharge lines and with steam blowing on the over- board discharge.

310.

Winterization of electrical installations

1. Electrical power used for heating purposes in cold climates is to be included in the capacity of op- erating required by Pt 6, Ch 1, 201. of the Rules for the Classification of Steel Ships.

2. The table of electrical load analysis is to include operation in cold climates as a separate winter- ization condition.

3. Emergency generators are to be capable of operating at the lowest external design air temperature and are to be provided in a heated room and/or are to be suitable for using oil fuel specified for low temperature conditions, and provided with protection or heating arrangements on the air intake. Suitable antifreeze or heating arrangements are to be used in the cooling system. Where an air start system is installed, the air is to be dried. For Winterization E1(t) and E2(t) emergency generators are to be fitted with electrical heating arrangements for the cooling and lubricating oil systems.

4. The emergency generator room air intakes are to be provided with protection from icing by ice re- moval measures or heating arrangements. In addition, the air intake is to be provided with an auto- matic louver which closes whilst the generator is inactive (to reduce heat loss), and open when staring.

5. Exposed electric motors installed on equipment are to be provided with covers or ice removal measures to aid the removal of ice. Measures are to be provided to protect against humidity and condensation freezing in the motor and to achieve this they are to be provided with suitable heat- ing arrangements.

6. Exposed components of electrical cabling are to be suitable for operation at the average external design air temperature.

7. Measures to protect exposed cables from manual ice removal methods are to be provided.

Penetrations in exposed decks for electrical cables are to be enclosed in protective steel covers ex-

tending 0.5m from the penetration or to the item if this is closer. For Winterization E1(t), all ex- posed 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, refer to

309. 2.

8. Switch boxes and control panels in unheated areas are to be fitted with heating arrangements or be sealed units suitable for operation at the lowest design air temperature, to prevent condensation freezing.

9. For navigation aids and equipment, the temperature for use as stated by the manufacturer is to be suitable for the lowest external design air temperature.

10. 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.

11. Measures for continuous operation of the navigation air horn, where fitted, are to be provided to protect against humidity freezing in components and icing. Dry air is to be used and suitable heat- ing arrangements are to be provided. Air pipe lines for the navigation air horn are to be arranged in heated compartments as far as practicable, refer to also 309. 15.

12. Remotely controlled and focused search lights are to be provided at the bow and the bridge wings to combat reduced daylight hours and aid navigation in ice infested waters. The search lights are to be fitted with trace heating on the lens or provided with a cover, and with heating arrangements

for the directional motor.

13. Exposed magnetic compasses, where fitted, are to be protected by covers from icing.

14. Where closed circuit television systems are fitted in exposed locations, these are to be provided with heating arrangements or covers, and ice removal measures to protect against icing and freezing of the motors, wipers and screen.

15. Satellite/GPS motors are to be provided with suitable low temperature grease, and for Winterization E1(t) and E2(t), heating arrangements are to be provided. Antenna systems are to be protected from icing. For Winterization E1(t) and E2(t), exposed speaker systems are to be provided with heating arrangements.

16. Lighting arrangements in working areas on the deck, and in particular the forecastle, are to be lo- cated at accessible positions to facilitate ice removal. Exposed lights are to be suitable for the low- est external design air temperature and with due regard being given to changes in illumination values.

17. For Winterization E1(t) and E2(t), the navigation lights on the forward mast are to be provided with heating arrangements and ice removal measures to protect against icing.

18. Navigation lights are to be of a type tested with the intended they are suitable for the lowest design air temperature, such that or obscured.

light source to demonstrate that illumination will not be reduced

311.

1.

Winterization of emergency appliances

Fire pumps and the emergency fire pump are to be located in freezing components and fluids.

heated spaces to protect against

2. The fire main in exposed positions (including the main deck line and accommodation) is to be pro- tected against freezing in the line and hydrant. Isolating valves are to be located in a heated space and arranged such that the exposed part may be drained. Alternatively, means are to be provided to ensure the isolating valve is dry before closing, continuously circulated and with thermal insulation or provided with heating arrangements. For Winterization E1(t), heating arrangements are to be pro- vided for hydrant in exposed locations and the fire main is to be arranged to provide continuous circulation.

3. The exposed fire main is to be routed through internal heated spaces as far as practicable consider- ing particular ship arrangements.

4. Sea water suctions for fire pumps are to be provided with heating arrangements for ice cleaning.

Steam blowing is to be provided or means of using the engine room sea chest.

5. Water spray lines, where fitted, are to be designed to protect against the lines freezing and the nozzles clogging with ice. They are to be located inside and have external nozzles of a design to minimize freezing, or provided with drainage facilities and arranged to be blowing through with dry air, or provided with heating arrangements.

6. Foam and CO2 systems and monitoring equipment are to comply with the applicable requirements of Par 2 and 3.

7. For fire extinguishing media, such as foam systems, the temperature for use as stated by the manu- facturer is to be suitable for the lowest design external air temperature. Extinguishers are to be suitable for low temperature use or located in heated spaces.

8. Arrangements are to be provided such that after use, the fire hoses can be drained and dried to protect from freezing. Stowage arrangements are to be provided with heating arrangements or at least two additional hose provided to enable wet hoses to be replaced whilst drying.

9. As far as practicable, lifeboats and liferafts are to be located in protected locations(recesses or ga- rages) to provide protection from icing.

10. Lifeboats are to be of totally enclosed type and provided with internal space heaters to maintain a habitable temperature. Adjacent receptacles for electrical heating arrangements are to be supplied from the emergency switchboard.

11. The lifeboat coxswain’'s control panel is to be provided with heating arrangements. Ice removal

measures to remove icing from windows and heating arrangements are to be provided to windows for Winterization E1(t).

12. Lifeboat engines are to be provided with suitable low temperature grades of oil fuel and lu- brication oil to protect against the effects of freezing. The cooling system for the engines is to be provided with suitable anti-freeze and heating arrangements for Winterization E1(t).

13. Lifeboat engine batteries are to be suitable for low temperature conditions, or a flexible lead for battery charging and a means of safe heating is to be provided.

14. 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.

15. Lifeboat davits/sheaves/release hooks are to have provision for the use of suitable low temperature grease, covers or and heating arrangements, to protect the mechanisms from becoming fixed by icing.

16. To protect from icing, the the stowed position.

17. Lifeboat water spray lines, design to minimize freezing

embarkation (lifeboat rope) ladders are to be provided with covers in

where fitted, are to be located inside and have external nozzles of a or to have drainage facilities and arranged to be blown through with

dry air. In addition, the water intake is to be protected from ice build up.

18. For Winterization E1(t) and E2(t), the lifeboat access doors are to be provided with trace heating arrangements and the liferafts arranged to be covered with thermal blankets.

19. Liferafts are to be suitable for the lowest external design air temperature. A steam connection for ice removal measures is to be provided for protection against icing of the liferaft. Davit-launched liferafts are to comply with Par 14. For Winterization E1(t) and E2(t), the liferaft are to be cov- ered with thermal blankets and monitoring arrangements are to be provided that will activate an alarm in accordance with the alarm system required by Pt 6, Ch 2, 201. of the Rules for the Classification of Steel Ships to allow responsible personnel to reinstate heating in the event of a failure.

20. For life saving equipment, the temperature for use as stated by the manufacturer is to be suitable for the lowest external design air temperature. Measures are to be provided for the EPIRB/SART and lifeboat contents (including flares and torch batteries) for low temperature operation. Ice re- moval measures are to be provided and for Winterization E1(t) and E2(t), the EPIRB/SART is to be provided with heating arrangements on the release mechanism. The heating arrangements are not to interfere with the function of the mechanism.

21. Rescue boats are to be provided with systems which are similar to those for lifeboats.

22. Means are to be provided to protect fluids within exposed pipes for decontamination showers and eyewash systems from freezing, where fitted. Heating arrangements are to be provided in the water tank and exposed sections of piping are to be provided with insulation or trace heating arrangements. Alternatively, these are to be sited in a heated room/compartment. Additional eyewash fluids are to be stored in an alternative heated space.

23. The materials used for exposed components, including steel davits, hydraulics and rubber compo- nents, are to be suitable for operation at the average external design air temperature.

24. Immersion suits are to be suitable for low temperature operation and stored in heated spaces or containers in locations with suitable ice removal measures.