Schedule 10
- 1. 28 January 201615:48 Standard Specifications for the Construction of Local Fishing Vessels of less than 24 metres in Length Overall Country .... Fisheries Act ....... Regulation ...... Section ........... Schedule 10 Machinery and Electrical Installations
- 2. 28 January 201615:48 ii Contents 1. Part 1 Machinery Installations.................................................................................................... 1 1.1 General................................................................................................................................... 1 1.2 Main propulsion - outboard engine........................................................................................ 1 1.3 Main propulsion - inboard engine.......................................................................................... 1 1.4 Alignment .............................................................................................................................. 2 1.5 Intermediate bearings............................................................................................................. 2 1.6 Stern tube and bearings.......................................................................................................... 2 1.7 Propeller and shaft clearances................................................................................................ 3 1.8 External shaft support brackets.............................................................................................. 3 1.9 Attachments ........................................................................................................................... 3 1.10 Auxiliary motors.................................................................................................................... 3 1.11 Means of going astern............................................................................................................ 4 1.12 Exhaust systems..................................................................................................................... 4 1.13 Wet exhaust............................................................................................................................ 4 1.14 Dry exhaust:........................................................................................................................... 4 1.15 Air pressure systems .............................................................................................................. 4 1.16 Fuel tanks, piping and fittings................................................................................................ 4 1.17 Filters ..................................................................................................................................... 6 1.18 Pipes....................................................................................................................................... 6 1.19 Petrol engine installation........................................................................................................ 6 1.20 Miscellaneous ........................................................................................................................ 7 1.21 Bilge and ballast systems....................................................................................................... 7 1.22 Steering gear .......................................................................................................................... 8 1.23 Refrigeration systems............................................................................................................. 9 1.24 Water tanks General............................................................................................................... 9 2. Part 2 Electrical installations.................................................................................................... 10 2.1 Definitions.............................................................................Error! Bookmark not defined. 2.2 General................................................................................................................................. 10 2.3 Electric cables and conductors............................................................................................. 10 2.4 DC Systems.......................................................................................................................... 11 2.5 Battery powered systems ..................................................................................................... 12 2.6 AC Systems.......................................................................................................................... 12 2.7 Earthing and bonding........................................................................................................... 13 2.8 Lighting systems.................................................................................................................. 13 2.9 Electric motors..................................................................................................................... 14 2.10 Lightning Conductors .......................................................................................................... 14 2.11 Equivalency.......................................................................................................................... 14 List of Schedules............................................................................................................................... 15
- 3. 28 January 201615:48 1 1. Part 1 Machinery Installations 1.1 General 1.1.1 Machinery installations shall be designed, constructed and installed in accordance with good engineering practice. Equipment shall be so installed, protected and maintained that it does not constitute a danger to persons and the vessel. 1.1.2 Machinery spaces shall be designed to provide safe and free access to all machinery and its controls as well as to any other parts that may require servicing. Such spaces shall be adequately ventilated. 1.1.3 All controls for operating the machinery and equipment, such as measuring devices, pumping systems and arrangements, valves, cocks, air pipes, inlets, sounders, switches etc., shall be permanently marked with appropriate inscriptions clearly showing their purpose. The Minister or delegated authority may require pipes to be marked with appropriate colours to indicate their purpose. 1.1.4 Exhaust pipes and other hot surfaces within reach of personnel shall be properly insulated or otherwise protected to prevent accidents or burns. Likewise hot surfaces, which could cause ignition, shall be protected from all possible contacts with combustible materials. 1.1.5 Moving external parts of engines and mechanical and electrical equipment shall be suitably guarded to prevent injury to attendant personnel. 1.1.6 Where air cooled internal combustion engines are installed special consideration shall be given to the provision of adequate volumes of cooling air and to the removal of hot air from the machinery spaces. 1.1.7 Where freshwater cooled internal combustion engines are installed, provision shall be made for an emergency means of supplying cooling water in the case of failure of the circulating water pump. 1.1.8 Seawater strainers shall be capable of being cleaned without interrupting the flow of cooling water through the freshwater and lubricating oil coolers. 1.1.9 Tools, spare parts and spare gear required for routine maintenance and simple repairs shall be carried on board for main and auxiliary machinery, mechanical and electrical equipment and installations, and shall be securely stowed in an easily accessible space. 1.1.10 Information on operation and maintenance of machinery, usage of fuel and lubricating oils shall be carried on board the vessel. 1.2 Main propulsion - outboard engine 1.2.1 Outboard engines shall be capable of being easily and securely fastened to the hull, and shall be provided with a safety chain or cable. 1.2.2 Where outboard engines are fitted in a well, a drainpipe of not less than 50mm (2") diameter shall be fitted. An effective bushing shall be fitted where remote control and fuel hoses penetrate the bulkhead of the well. 1.3 Main propulsion - inboard engine 1.3.1 Bars used on flywheels to turn machinery over by hand shall be so constructed as to facilitate easy withdrawal from the flywheel’s recess if the engine should recoil. Hand cranks for engines, shall be designed to be thrown out instantly, when the engine starts.
- 4. 28 January 201615:48 2 1.3.2 The main engine instrument panel shall, have the following gauges: engine revolution counter; engine lubricating oil pressure gauge; engine cooling water temperature gauge; ammeter(s) and voltmeters for batteries; hour meter. 1.3.3 Where propulsion engines are fitted with a reverse/reduction gearbox, a hydraulic oil pressure gauge shall be fitted. An exhaust temperature gauge shall be fitted where the power of the propulsion engine is of 250 kilowatts (335Hp) or above. 1.3.4 In a decked vessel, audible and visual alarms shall be fitted for low lubricating oil pressure and high cooling water temperatures. The Minister or delegated authority, taking into consideration the configuration of the vessel and the mode of operation, may require the alarms to be visible and heard in the machinery space and in the wheelhouse. 1.4 Alignment 1.4.1 The arrangement for attaching the main engine to the engine beds shall allow for adjustment of height for the purpose of shaft alignment. The main engine and propeller shaft couplings shall be aligned to within a tolerance of 0.05mm (0.002”) in both horizontal and vertical axis. All shaft alignment work shall take into account the weight of overhung shaft and coupling from the last shaft support bearing or the stern bearing/stuffing box; arrangements shall be made to compensate for this weight. 1.5 Intermediate bearings 1.5.1 Where the unsupported length of shaft between the shaft stuffing box and the coupling exceeds 20 times the shaft diameter, intermediate shaft bearings shall be installed. The spacing between bearings shall be in accordance with dimensions set out in Table 1. 1.5.2 For shaft speeds in excess of 1000 RPM, the Minister of delegated authority may require the spacing to be reduced. Table 1 Diameter of Shaft (mm) Diameter of Shaft (Inches) Maximum Shaft Bearing Spacing Centre to centre in (Metres) Maximum Shaft Bearing Spacing Centre to centre in (Feet) 25 0.98 1.21 4.0 30 1.18 1.37 4.5 35 1.38 1.52 5.0 40 1.57 1.66 5.4 45 1.77 1.80 6.0 50 1.97 1.93 6.3 55 2.16 2.05 6.7 65 2.56 2.29 7.5 75 2.95 2.52 8.3 1.6 Stern tube and bearings 1.6.1 Each vessel shall have an appropriately sized stern tube installed which may be either oil or water lubricated. The inboard end of the tube shall be fitted with an oil seal or adjustable stuffing box as the case may be.
- 5. 28 January 201615:48 3 1.7 Propeller and shaft clearances 1.71 The propeller aperture shall be large enough to provide sufficient clearance for the installed propeller. Guidance on clearances is given in Table 2 Table 2 Clearances expressed as a percentage of the diameter of the propeller Between the counter and blade tip 15% Between the keel or keel shoe and the blade tip 5% Between the forward edge of the rudder blade and propeller 10% From aft face of sternpost to propeller at 35% of diameter 25% 1.72 Propeller shaft overhang between the forward face of the propeller boss and the aft end of the stern bearing shall not be more than one and a half times the shaft diameter. 1.8 External shaft support brackets 1.8.1 Where the stern configuration of a vessel is such that the propeller shaft extends well beyond the stern post in order to obtain sufficient clearance for the propeller, it shall be properly supported by an arrangement of brackets. 1.8.2 Steel pads shall be fitted to the hull with not less than 4 through bolts or welded in the case of a steel hulled vessel. The brackets shall be attached to the steel pads by bolts or by welding and arranged to carry a boss for the propeller shaft bearing. Brackets made of steel brackets shall be fitted with suitable anodes. 1.8.3 Where the external shaft length is such that intermediate bearings would be necessary the same rules shall apply as those applied to internal intermediate bearings 1.9 Attachments 1.9.1 Power units whether hydraulic or mechanical that are operated from the main engine must be provided with easily operated clutch units that will permit engagement or disengagement whilst the main engine is running. 1.9.2 Any moving pulleys, belts or chains shall have proper shielding to prevent accidental entanglement of clothing of crew working in that space. The engine manufacturer shall be consulted where mechanical PTO’s utilising chains and sprockets are to be fitted to determine whether or it would be necessary to have the end of shaft furthest from the PTO at engine supported by a shaft bearing. 1.9.3 Where a forward power take-off is fitted to an engine crankshaft, the power to be taken off shall not exceed the engine manufacturer’s limits for the drive. Details of the flexible coupling and the driven mass shall be submitted to the engine manufacturer for approval in relation to the effect of torsional vibrations on the crankshaft of the engine. Where a lay-shaft is driven from the power take-off shaft by either pulley or chain, the shaft shall be fitted with a bearing on both sides of the belt pulley or chain sprocket. 1.9.4 Hydraulic installations for fishing equipment shall have a means of disengaging the hydraulic pump from the driving engine. 1.9.5 Belt drives shall be arranged with a method of tensioning. 1.10 Auxiliary motors 1.10.1 When auxiliary engines and/or generator sets are fitted, they shall be installed to the same standards as those used for main engines.
- 6. 28 January 201615:48 4 1.11 Means of going astern 1.11.1 Vessels shall have sufficient power for going astern to secure proper control of the vessel in all normal circumstances. 1.12 Exhaust systems 1.12.1 Exhaust pipes from engines and from heating and cooking appliances shall be permanently mounted and lead to the open air through the uppermost deck or canopy, or through the hull. Exhausts system may be of the wet or dry types as appropriate for the size of vessel and type of machinery installation. 1.13 Wet exhaust 1.13.1 Where a wet exhaust system is approved, water from the engine cooling system shall be introduced into the exhaust pipe near to the manifold. A ''U'' bend or other suitable water trap shall be incorporated in the exhaust line to avoid the flow-back of water into the engine The Minister or delegated authority may accept alternative arrangements, if these basic requirements can not be incorporated. 1.14 Dry exhaust: 1.14.1 Dry exhaust system, shall be protected with insulation. The system may exhaust through the hull side or vertically through the deck aft of wheelhouse. The system shall incorporate a suitable engine silencer or exhaust muffler in the exhaust pipe. 1.14.2 All exhaust pipes shall be assembled with the minimum number of bends and of a diameter as specified by the engine manufacturers. All joints shall be gas-tight, the pipes well secured and supported by hangers or brackets and fitted with a section of flexible pipe or an expansion piece. Exhaust pipes shall be led clear of all woodwork and other combustible material and where necessary they shall be effectively insulated. 1.14.3 Where exhaust pipes pass through a wooden deck or other structures of wood or other combustible material, a compensating plate of metal or other suitable protection shall be fitted to avoid the risk of fire. 1.15 Air pressure systems 1.15.1 Air intakes for air compressors shall be so located that the air is as clean as possible and free from flammable or toxic gases or fumes. Air filters shall be fitted. Air discharge pipes of compressors shall be insulated to protect personnel from burns. 1.15.2 The discharge pipes from starting air compressors shall lead directly to the starting air receivers. Where the main and or the auxiliary engines are arranged for air starting, the pipes from the air reservoirs shall be separate from the compressor discharge. 1.15.3 An air reservoir shall be fitted with high-pressure relief valve and a means of draining water and oil from the lowest point in the reservoir. 1.15.4 Air reservoirs shall be subjected to a pressure test and the relief valve tested, set and sealed at the appropriate operating pressure. 1.16 Fuel tanks, piping and fittings 1.16.1 Fuel tank(s) and associated piping systems and fittings shall be of a design and construction adequate for the service for which they are intended. They shall be installed and protected against movement and accidental damage and ease of maintenance to prevent the leakage of fuel or fumes within the hull. 1.16.2 Vents and filling connections of fuel tanks shall be located in a protected, open-air position and remote from any ventilation intake. The cross sectional area of vents shall be determined having regard to the filling arrangements but shall not be less than the 1.25 times the internal
- 7. 28 January 201615:48 5 diameter of the filling pipe. Vent openings shall be fitted with suitable wire gauze screens or equivalent flame retarding devices and a suitable non-return arrangement. 1.16.3 In a decked vessel, the valve or valves supplying fuel to the main and or auxiliary engines shall be attached to the fuel tank or fuel tanks. The valve or valves shall be capable of being closed quickly from a position outside the machinery space 1.16.4 Wherever fuel might escape and make contact with hot surfaces, suitable guards, deflectors or screens shall be fitted. 1.16.5 1.15.5 Fuel storage tanks shall not be located close to heated surfaces and shall not be situated above stairways and ladders, hot surfaces and or electrical equipment. In the event of leakage or rupture, tanks and piping shall be arranged to minimise or eliminate the possibility that fuel will come into contact with hot surfaces or electrical components which may cause the fuel to ignite. 1.16.6 Safe and efficient means of ascertaining the amount of fuel oil contained in any oil tank shall be provided. Where sounding pipes are installed, their upper ends shall terminate in safe positions and shall be fitted with suitable means of closure to prevent ingress of water. A tank may be fitted with gauges made of flat glass of substantial thickness and protected with a metal casing, provided that automatic closing valves are fitted. 1.16.7 Fuel tanks of welded construction shall be pressure tested prior to installation in the vessel. The test shall consist of filling the tank with water and applying pressure equivalent to 2m (6.5ft) water column above the top of the tank. The pressure shall be maintained for a sufficient length of time to the satisfaction of the Minister or delegated authority to demonstrate that there are no leaks. 1.16.8 All tanks regardless of material of construction must be installed and secured against movement taking into account the weight of a full tank. Material thickness of tanks and baffles shall be related to the tank capacity as outlined below in Table 3. Table3 Minimum fuel tank scantlings Volume in Litres 50 50 – 100 100 – 200 200 – 1000 1000 + Material thickness mm mm mm mm mm Mild steel 1.5 2.0 3.0 5.0 6.0 Stainless steel 1.0 1.0 2.0 3.0 4.0 Fibreglass 4.0 4.0 4.0 5.0 6.0 1.16.9 Diesel fuel tanks shall be constructed of mild steel plate, stainless steel or plastics specially formulated for diesel fuel tanks. Galvanised steel plate shall not be used for diesel fuel tanks. 1.16.10 Tanks shall have internal baffles installed, baffles shall be of the same material as the tank and be arranged in such a manner that fuel is able to drain between baffled compartments. 1.16.11 Tanks shall be provided with fittings for filling, sounding, venting and fuel outlet and fuel return connections. In addition a sediment well / water trap shall be installed at the tank low point and fitted with a self-closing drain valve. 1.16.12 On tanks with capacities between 50 – 1500 litre (11 – 330imp. gallons) an inspection plate(s) shall be provided having a minimum diameter of 150mm (6”). 1.16.13 Petrol tanks shall not be an integral part of the hull structure. An efficient system shall be installed to ensure that petrol does not spill into the hull of the vessel when tanks are being filled. Petrol tanks may be constructed of mild steel, stainless steel, or plastics specially formulated for gasoline. 1.16.14 In a decked vessel, a spark free bilge air suction system shall be installed to remove explosive petroleum gasses prior to being able to start the motor. Audible / Visual, gas/fume detectors shall be installed with sensors in the bilge or other low point in hull.
- 8. 28 January 201615:48 6 1.16.15 Two or more separate fuel tanks may be fitted provided that the arrangements for the spill returns from the engine or engines shall return to the operational tank or to the suction side of the engine fuel pump(s). Separate fuel tanks may also be cross connected providing they are fitted with all valves, ventilating pipes, measuring devices and quick closing devices as required for an individual fuel tank 1.17 Filters 1.17.1 All fuel tanks shall be provided with at least one primary fuel filter and water separator fitted with replaceable filters, between tank and motor. 1.18 Pipes 1.18.1 In a decked vessel, fuel filling pipes shall be fixed to the tank and extend from the tank to a convenient location above the weather deck and at a height equal to that of the bulwark. Filling pipes shall be properly located and secured to prevent accidental damage. Fuel filling pipes shall have watertight covers clearly marked “FUEL”. 1.18.2 Fuel pipes of internal combustion engines shall be of steel or other equivalent material and shall be adequately secured and protected. Fuel lines shall conform to specifications SAE J1527 Class I. Plastic piping shall not be used for the fuel supply to machinery, to fuel tanks or for any purpose in the machinery space where its destruction by fire would present a safety hazard. 1.18.3 Tank vents shall be of metal pipe compatible with the tank material and attached to the tank. The strength of exposed sections of vent pipes shall not be less than that of the surrounding structures. The pipes shall be properly supported and secured against movement or accidental damage. The height of the open end of a vent pipe above a deck shall be not less than: 750mm for vessels of 17m Loa and above; 450mm for vessels of less than 17m Loa. 1.18.4 Vent pipes shall have a swan neck or U shaped arrangement and be fitted with a flame retarding screen. The free area through the flame retarding screen shall be not less that the cross sectional area of the actual vent pipe. Vent pipes from fuel tanks shall be fitted with a means to automatically prevent water entering the tank. In case of emergency under extreme weather conditions, the bell mouth of the vent pipe in which the flame-retarding screen is placed shall be fitted with a blank flange, hinged at one point and fitted with a locking device. An arrangement shall be provided to release the vacuum in the tank when a vent pipe is closed. 1.19 Petrol engine installation 1.19.1 Where an inboard petrol engine is installed within a closed decked compartment, such compartment shall be ventilated with a mechanical exhaust and a natural air supply system. Exhaust ventilation trunks from compartments containing petrol engines or other sources of concentrated petrol fumes shall be isolated from other ventilation systems. The mechanical exhaust system shall include an intake located as close as practicable to a position beneath the engine it serves or where petrol fumes are most likely to accumulate and it shall be above normal bilge water levels. Mechanical exhaust fans and trunks shall be suitable for use in an atmosphere containing petrol fumes. 1.19.2 There shall be a permanent notice at each petrol engine starting position requiring: that the ventilation system be operated for at least 3 min before an engine is started; that during fuelling all windows and doors are closed and smoking is prohibited. 1.19.3 Petrol filling systems shall be effectively bonded to earth.
- 9. 28 January 201615:48 7 1.20 Miscellaneous 1.20.1 Where practicable, fuel oil piping shall not be led through accommodation spaces. 1.20.2 Fuel tank sounding pipe openings shall not be located in crew accommodation. 1.20.3 Emergency controls shall be provided outside machinery and accommodation spaces, for stopping every fuel pressure pump and every fan supplying air to machinery spaces and for closing all suctions from fuel tanks. Such controls shall be at positions not likely to be cut off in case of fire in the machinery spaces. 1.20.4 Where fuel, of a flashpoint of less than 60C (closed cup test) is used, the space in which the fuel is stored shall be designed to ensure that the temperature of the space does not rise to within 10C below the flashpoint of the fuel. 1.20.5 Lubricating oil tanks, their associated piping and valves shall be carefully installed and maintained to prevent leakage of lubricating oil within the hull. 1.20.6 Where tubular gauge glasses are fitted to lubricating oil tanks, they shall be of substantial construction, adequately protected and fitted with self-closing arrangements at the tank. 1.20.7 Lubricating oil pipes shall be of mild steel or other equivalent material and shall be adequately secured and protected. 1.21 Bilge and ballast systems 1.21.1 Arrangements shall be provided for draining any watertight compartment (other than small buoyancy compartments) under all service conditions. 1.21.2 Valves and cocks not forming part of a piping system shall not be permitted in the collision bulkhead. 1.21.3 All fishing vessels shall have an efficient means of removing water from the bilge. Bilge pumps may be manual, mechanical or electrically powered. At least one bilge pump shall be manually operated on all vessels. Bilge pump capacities and numbers to be installed shall be in accordance with minimum numbers and capacities shown in Table 4. The requirements of a Ship Classification Society may be accepted provided that, they are not less than prescribed in this schedule. Table4 Minimum bilge pump installations. Vessel Loa in metres Manually operated pumps Power driven pumps Total Minimum capacity of power pumps litres/minNumber Capacity in Litres/min Number Capacity in Litres/min Under 7 1 60 - - - 7 and over but less than 15 1 60 1 90 90 15 and over but less than 20 1 80 2 140 275 20 and over but less than 24 1 80 2 230 455 1.21.4 The diameter of the bilge pump suction pipe shall not be less than 45mm for a vessel of 20 metres Loa but less than 24 meters Loa. For decked and undecked vessels of 12 meters Loa but less than 20 metres Loa the diameter shall be not less than 40mm.
- 10. 28 January 201615:48 8 1.21.5 When multiple bilge pumps are installed, each pump shall be capable of drawing water from a suction point in each watertight compartment. If there are no watertight compartments suctions shall be placed in the lowest area of the bilge. 1.21.6 Powered pumps may be engine operated or electrically driven. Where the power for electric bilge pumps is supplied from batteries, the capacity of the battery and charging rate shall be adequate to allow the pump or pumps to run continuously. 1.21.7 All bilge suction pipes shall have non-return valves installed. 1.21.8 The ends of all bilge suction lines shall be fitted with strum boxes having a minimum open surface area (holes) of three times the cross sectional area of the suction pipe. Provision for easy access to clean the strainers must be made. 1.21.9 Overboard discharge pipes shall be attached to a non-return valve at the inboard side of the overboard discharge through-hull fitting. 1.21.10 All bilge piping and valve arrangements shall be clearly labelled with waterproof labels. 1.21.11 Bilge and ballast pumping systems shall be arranged to prevent water passing from the sea or from water ballast spaces into holds or machinery spaces or from one watertight compartment to another. The bilge connection to any pump that draws from the sea or from water ballast spaces shall be fitted with a non-return valve. Alternatively, it may be fitted with a cock that cannot be opened simultaneously to the bilge and to the sea or to the bilge and water ballast spaces. Valves in bilge suction chests shall be of a non-return type. 1.21.12 The inside diameter of the bilge main and bilge suction pipe directly connected to the pump shall be not less than the inside diameter of the suction port of the bilge pump 1.22 Steering gear 1.22.1 The steering arrangements, including the rudder and associated fittings, shall be of adequate strength and capable of steering the vessel at maximum speed. They shall be so designed and constructed that they are not damaged at maximum astern speed or by manoeuvring during fishing operations. 1.22.2 The system shall be designed to allow hard over port to hard over starboard in 30 seconds at full ahead. All steering components shall be solidly fastened in place and easily accessible for adjustment, maintenance and repair. The arrangements may consist of a tiller, quadrant (wire cable and pulleys), hydraulics or any other system approved by the Minister or delegated authority. 1.22.3 All power operated steering systems shall have an emergency tiller arrangement. Hydraulic steering systems shall be provided with a readily accessible equalising valve that will allow easy operation of the emergency tiller. 1.22.4 Remotely controlled rudders shall have solid stops installed at 35 degrees from centreline on each side to limit rudder travel. Unless specifically designed otherwise, all rudders mounted through the counter shall have upper and lower bearings with a proper rudderstock stuffing box/bearing accessible from inside the vessel. Transom hung rudders shall be fitted with adequate gudgeons. 1.22.5 Where installations allow vertical movement of the rudderstock a means of restricting such movement must be provided. 1.22.6 Steering devices other than a rudder may be approved providing that its construction and operation allows hard over port to hard over starboard in 30 seconds at full ahead speed and that an emergency means of steering can be accommodated. 1.22.7 Where the steering device is remotely operated, a rudder angle indicator shall be provided at the steering position.
- 11. 28 January 201615:48 9 1.22.8 The wheelhouse or steering position shall be so arranged that the person steering the vessel shall have a clear view ahead and as far as practicable an all-round vision from the normal steering position. 1.23 Refrigeration systems 1.23.1 Refrigeration plants and cold storerooms shall be of a design and construction suitable for the service for which they are intended and be so installed and protected as to reduce to a minimum any danger to the crew. 1.23.2 Cold-store rooms and spaces where evaporators are fitted shall be provided with: tight-fitting doors operable from each side; alarms, operable from within rooms that give an audible and or visual signal outside the room; means for indicating the location of the exit door, in the event of lights in the room being switched off or failing; and mechanical means for the extraction of refrigerant gases, provided that the associated controls shall be operable from inside and outside the room and provided that there are no permanently open vents or channels which would permit the passage of leaking refrigerant to other parts of the vessel. 1.23.3 The refrigeration machinery may be installed in the space containing the propulsion machinery providing that the quantity of refrigerant in the refrigeration system will not cause danger to persons in the machinery space should all the gas escape. An alarm shall be fitted to give warning of a dangerous concentration of gas should any leakage occur in the space. 1.24 Water tanks General 1.24.1 All fresh water tanks shall be constructed of steel or plastics suitable for this purpose. Tanks shall be of sufficient capacity to provide all fresh water requirements for crew on normal fishing voyages. Vessels should have a reserve water tank capacity of a minimum 25%. 1.24.2 Water tanks will generally have the same requirements regarding material scantlings, securing in place, baffles, and filler and vent pipes as outlined in section 1.15. They shall be fitted with inspection plates or manholes depending upon their capacity for cleaning. 1.24.3 Water filler pipes shall be clearly labelled or marked “WATER”.
- 12. 28 January 201615:48 10 2. Part 2 Electrical installations 2.1 Definitions 2.1.1 Preferential tripping is an arrangement through which protective devices for unimportant circuits are opened automatically in order to ensure the power supply for essential circuits when any one generator becomes overloaded. 2.1.2 Main source of electrical power refers to the source intended to supply electric power to the main switchboard for distribution to all services necessary to maintain the vessel in normal working and habitable condition. 2.2 General 2.2.1 Electrical equipment and installations shall be such that the vessel and all persons on board are protected against electrical hazards. 2.2.2 Cable systems and electrical equipment shall be so installed as to avoid or reduce interference with radio operation. 2.2.3 A self-contained emergency source of electrical power outside the machinery spaces shall be provided and so arranged as to ensure its functioning in the event of fire or other causes of failure of the main electrical installations. 2.2.4 The emergency source of electrical power shall be capable of serving safety arrangements, such as safety radio system and emergency light, to the satisfaction of the Minister or delegated authority. 2.3 Electric cables and conductors 2.3.1 Cables are to be capable of carrying the maximum rated current for the circuit. The cross sectional area shall be sufficient to ensure that the voltage drop will not exceed 6% of the nominal rating under maximum rated load for the circuit. Electrical wiring shall be of marine grade multi-strand tinned copper wire cores with an approved insulated cover. 2.3.2 All electrical cables shall be at least of a flame-retardant type and shall be so installed as not to impair their original flame-retarding properties. The Minister or delegated authority may permit the use of special types of cables when necessary for particular applications, such as radio frequency cables, which do not comply with the foregoing. 2.3.3 Electric cables shall be supported in such a manner as to avoid chafing or other damage and shall not be located close to hot surfaces such as engine exhausts. 2.3.4 Except as permitted by the Minister or delegated authority in exceptional circumstances, all metal sheaths and armour of cables shall be electrically continuous and shall be earthed. 2.3.5 Where the cables are not metal sheathed or armoured and there might be a risk of fire in case of an electrical fault, special precautions shall be taken to the satisfaction of the Minister or delegated authority. 2.3.6 Electrical wiring and electrical equipment installed in fishing vessels shall be of marine grade materials only and shall conform to the best marine practices of installation and workmanship. 2.3.7 In decked vessels, a self-contained emergency source of electrical power located, to the satisfaction of the Minister or delegated authority, outside the machinery spaces shall be provided. 2.3.8 Electrical equipment exposed to the weather shall be protected from dampness and corrosion as well as mechanical damage.
- 13. 28 January 201615:48 11 2.3.9 Lighting fittings shall be arranged to prevent temperature rises which could damage the wiring and to prevent surrounding material from becoming excessively hot. 2.3.10 In spaces where flammable mixtures are liable to collect, and in any compartment assigned principally to the containment of an accumulator battery, no electrical equipment shall be installed unless the Minister or delegated authority is satisfied that it is: essential for operational purposes; of a type which will not ignite the mixture concerned; appropriate to the space concerned; and certified for safe usage in the dusts, vapours or gases likely to be encountered. 2.3.11 Where a potential explosion risk exists in or near any space, all electrical equipment and fittings installed in those spaces shall be either explosion-proof or intrinsically safe to the satisfaction of the Minister or delegated authority. 2.4 DC Systems 2.4.1 Direct current installations shall be wired as insulated return systems. The hull shall not be used to carry current. 2.4.2 The Minister or delegated authority may approve the following direct current generating and distribution systems providing that these are suitable for the intended purpose: 12 volts; 24 volt, 32 volts 110 volts; and 220 volts. 2.4.3 Main and emergency switchboards shall be so arranged as to give easy access as may be needed to apparatus and equipment, without danger to attendants. The sides and backs and, where necessary, the fronts of switchboards, shall be suitably guarded. Exposed ''live'' parts having voltages to earth exceeding a voltage to be specified by the Minister or delegated authority shall not be installed on the front of such switchboards. There shall be non- conducting mats or gratings at the front and rear, where necessary 2.4.4 All out going circuits from the switchboards shall be double pole and open circuit protected. Where the Minister or delegated authority has approved an earth return system, the outgoing circuit breakers would be single pole. Lighting circuits shall be separate from power circuits. Secondary distribution boards shall be fitted with double pole switches and open circuit protection whereas final sub-circuits may be fitted with single pole switches. 2.4.5 Where electrical power, other than a low voltage supply, constitutes the only means of maintaining auxiliary services essential for the propulsion and the safety of the vessel, the switchboard shall be designed to allow preferential tripping of non-essential services. 2.4.6 Electric circuits and the current-carrying capacity of each circuit shall be permanently indicated, together with the rating or setting of the appropriate overload protective device shall be clearly identified on switchboards and where appropriate on distribution boxes. 2.4.7 Each separate circuit shall be protected against short circuit as well as against overload to the satisfaction of the Minister or delegated authority. 2.4.8 Piping conveying liquid shall not be fitted above or close to switchboards or other electrical equipment. Where such arrangements are unavoidable, provision shall be made to prevent leakage damaging the equipment. The current-carrying capacity of each circuit shall be
- 14. 28 January 201615:48 12 permanently indicated, together with the rating or setting of the appropriate overload protective device. 2.5 Battery powered systems 2.5.1 Electrical power shall be provided for all navigation and fishing lights installed to comply with International Regulations for Preventing Collision at Sea. Spare dry cell batteries shall be stored in waterproof containers. Accumulator batteries shall be suitably housed and compartments used primarily for their storage shall be properly constructed and ventilated. Accumulator batteries shall not be housed in crew accommodation spaces. 2.5.2 Batteries shall be installed with sufficient capacity and numbers to carry all anticipated loads during normal operations and with sufficient reserve capacity for emergencies. An efficient means of battery charging shall be provided, either from a main engine driven alternator or auxiliary generator. Battery charging systems shall be fitted with voltage surge protection. 2.5.3 Where the main and or auxiliary engines are fitted with electric motor starters, the batteries connected to the system for starting shall be separate from the batteries used for emergency services. The starter batteries shall be capable of starting the engine at least six times without recharging. 2.5.4 Battery banks shall be fitted with double pole spark proof isolating switches. The switches shall be placed in an accessible position. 2.5.5 There shall be an arrangement for continuous charging when the vessel is under way. When two or more banks of batteries are fitted, there shall be a facility to charge each bank. The Minister or delegated authority may accept marine quality, battery charger that will automatically charge the low batteries banks and cut out when battery banks are fully charged provided that the installation is fitted with battery level indicators. Other means of battery charging, such as wind powered or solar units, may be considered by the Minister or delegated authority providing the materials of construction are of marine quality and that the operating specifications are satisfactory. 2.5.6 Cables between a battery bank and an isolating switch and between the switch and a starter motor shall be as short as possible and double insulated. 2.5.7 Individual batteries and or banks of batteries shall be secured in trays or boxes to avoid movement due to the motion of the vessel. The trays and boxes must be suitably protected against corrosion from acid and alkaline solutions. They shall be positioned above the operating load waterline. 2.6 AC Systems 2.6.1 The Minister or delegated authority may approve the following alternating current generating and distribution systems providing that these are suitable for the intended purpose: 3 phase 3 wire; 3 phase 4 wire (neutral to be earthed at power source; single phase 2 wire. 2.6.2 Acceptable voltages and frequencies include: 400 volts rms. 50 Hz110 volts; 115 volts rms. 50 Hz; and, 230 volts rms. 50 Hz 2.6.3 The Minister or delegated authority may accept 60 Hz installations providing that in all other respects the installation meets with the provisions of this schedule. 2.6.4 Non self-regulating alternators shall be provided with automatic voltage regulation.
- 15. 28 January 201615:48 13 2.6.5 The Minister or delegated authority may approve the parallel operation of alternators, if synchronising and power sharing devices are to be fitted. The system shall also be fitted with reverse power protection. 2.6.6 Main and emergency switchboards shall be of the dead front to prevent accidental access to live parts. The sides and backs and, where necessary, the fronts of switchboards, shall be suitably guarded. 2.6.8 Each alternator section of the switchboard shall be fitted with a voltmeter, a frequency meter and an ammeter, switched to allow the current to be measured in each phase. A sub- distribution board fitted in the wheelhouse shall be fitted with a voltmeter and a switch to isolate it from the mains. Where fitted, the primary windings of transformers are to be protected against short circuits by circuit breakers or fuses capable of withstanding power surges. If transformers are arranged for parallel operation, they are to be provided with secondary isolation. 2.7 Earthing and bonding 2.7.1 All electrical installations shall be bonded to earth and each bonding point shall be accessible for maintenance. 2.7.2 The Minister or delegated authority, taking into consideration the design of the system and the working voltage may require a system of earth indicator lamps or means of detecting current leakage to be installed 2.7.3 A copper earth plate of at least 0.2m² is to be fitted to the hull of a wooden and fibreglass vessel at a point where it will always be submerged under all conditions of heel. Inside the hull, the earth plate shall be connected to a copper bar or rod, of at least 64mm² the length being appropriate to the number of bonding points. 2.7.4 Exposed permanently fixed metal parts of electrical machines or equipment which are not intended to be “live”, but which are liable under fault conditions to become “live” shall be earthed (grounded) unless: they are supplied at a voltage not exceeding 55 volts direct current or 55 volts, root mean square, between conductors, auto-transformers shall not be used for the purpose of achieving this alternative current voltage; or they are supplied at a voltage not exceeding 250 volts by safety isolating transformers supplying one consuming device only; or they are constructed taking into account the principle of double insulation. 2.7.5 All exposed metal parts of equipment that do not carry current are to be bonded to the earth bar. Lightning conductors shall be attached directly to the earth plate. 2.7.6 Radar, radio and other navigational equipment that requires to be earthed shall have a separate earthing point and the connection shall be as short as possible. 2.7.7 Where a flexible non conducting coupling is fitted between the gearbox output shaft and the propeller shafting the coupling shall be bridged by a piece of braided copper conductor. 2.8 Lighting systems 2.8.1 Lighting for machinery spaces, control stations and work spaces shall be supplied from at least two separate final sub-circuits and arranged in such a manner that failure of one final sub- circuit shall not leave the space in darkness. 2.8.2 Lighting of normally unattended spaces such as fishrooms and net stores shall be controlled from outside the space. 2.8.3 Emergency lighting shall be supplied from an accumulator battery. Such emergency lighting shall be placed at stairways, exits, machinery space, control station and where survival craft
- 16. 28 January 201615:48 14 are positioned. An emergency source of power shall be made available for a signalling lamp if carried. 2.9 Electric motors 2.9.1 Every electric motor shall be provided with a means of starting and stopping that is so placed as to be easily operated by the person controlling the motor. 2.9.2 The circuit supplying the motor shall be fitted with short circuit and overload protection. 2.9.3 Where electric motors are fitted to deck machinery, the operating device shall automatically return to the stop position when operator pressure is released. Emergency stops shall also be located at the control station. The mechanical component of the deck machinery shall be fitted with an appropriate fail-safe braking system 2.9.4 Electric fans and pumps driven by electric motors for the transfer of fuel oil, fuel oil lift pumps and similar fuel oil pumps, are to be fitted with a remote control. The remote control shall be positioned outside the machinery space concerned, for stopping the motors in the event of a fire in the space in which they are located. 2.10 Lightning Conductors 2.10.1 Lightning conductors are to be fitted on wooden masts. They shall be of continuous copper tape of copper rope having a cross section of not less than 75mm² and secured to a copper spike of 12mm diameter projecting at least 150mm beyond the top of the mast. 2.10.2 In the case of metal hulls, the lower end of the conductor is to be earthed to the hull. 2.10.3 In the case of wood or other non-metallic hulls, the lower end of the conductor is to be attached to the earth plate. All sharp bends must be avoided and bolted or riveted joints only may be used. 2.11 Equivalency 2.11.1 Electrical installations, which do not comply with the requirements of this Part, may be accepted provided that they are unavoidable and that there are justifiable reasons precluding compliance and that the electrical installations are deemed by the Minister or delegated authority to be equivalent to the requirements specified in this Part ------------------------------------------------------
- 17. 28 January 201615:48 15 List of Schedules Schedule 1 Prescribed Forms Schedule 2 Prescribed Fees Schedule 3 Safety Equipment for a Local Fishing Vessel Schedule 4 Fire Protection, Fire Detection, Fire Extinguishing and Fire Fighting Equipment. Schedule 5 Equipment/Ground Tackle/Anchors and Chains Schedule 6 Stability and Associated Seaworthiness Schedule 7 Scantlings for the Construction of a Wooden Hulled Local Fishing Vessel Schedule 8 Scantlings for the Construction of a Fibreglass Hulled Local Fishing Vessel Schedule 9 Scantlings for the Construction of a Steel Hulled Local Fishing Vessel Schedule 10 Machinery and Electrical Installations Schedule 11 Specifications for the Marking of Fishing Vessels