Section 9 Starting arrangements

9.1.1 Air starting arrangements are to meet the requirements of Vol 2, Pt 7, Ch 3, 12 Air compressors and air starting arrangements.

9.2.1 Where main engines are fitted with electric starters, two batteries are to be fitted. Each battery is to be capable of starting the engines when cold and the combined capacity is to be sufficient without recharging to provide the number of starts of the main engines as required by Vol 2, Pt 7, Ch 3, 12 Air compressors and air starting arrangements. In other respects batteries are to comply with the requirements of Vol 2, Pt 9, Ch 2, 7 Batteries.

9.2.2 Electric starting arrangements for auxiliary engines are to have two separate batteries or be supplied by separate circuits from the main engine batteries when such are provided. Where one of the auxiliary engines only is fitted with an electric starter one battery will be acceptable.

9.2.3 The combined capacity of the batteries for starting the auxiliary engines is to be sufficient for at least three starts for each engine.

9.2.4 Engine starting batteries are to be used only for the purposes of starting the engines and for the engines’ own control, alarm, monitoring and safety arrangements. Means are to be provided to ensure that the stored energy in the batteries is maintained at a level required to start the engines as defined in Vol 2, Pt 2, Ch 1, 9.2 Electric starting 9.2.1 and Vol 2, Pt 2, Ch 1, 9.2 Electric starting 9.2.3.

9.2.5 Where engines are fitted with electric starting batteries, an alarm is to be provided for low battery change level.

9.3.1 Transient electrical loads due to starting of engines are not to interfere with power supplies to control and weapons systems.

9.4.1 Emergency generators are to be capable of being readily started in their cold conditions down to a temperature of 0ºC. If this is impracticable, or if lower temperatures are likely to be encountered, consideration is to be given to the provision and maintenance of heating arrangements, so that ready starting will be assured.

9.4.2 Each emergency generator that is arranged to be automatically started is to be equipped with an approved starting system having two independent sources of stored energy, each of which is sufficient for at least three consecutive starts. When hand (manual) starting is demonstrated to be effective, only one source of stored energy need be provided. However, this source of stored energy is to be protected against depletion below the level required for starting.

9.4.3 Provision is to be made to maintain continuously the stored energy at all times, and for this purpose:

1. Electrical and hydraulic starting systems are to be maintained from the emergency switchboard.

2. Compressed air starting systems may be maintained by the main or auxiliary compressed air receivers, through a suitable non-return valve, or by an emergency air compressor energised by the emergency switchboard.

3. All these starting, charging and energy storing devices are to be located in the emergency generator room. These devices are not to be used for any purpose other than the operation of the emergency generator.

9.4.4 Electronically controlled emergency engines are to comply with the additional requirements of Vol 2, Pt 2, Ch 1, 4.5 Additional requirements for emergency engines for naval vessels.

9.4.5 When automatic starting is not required by the Rules and where it can be demonstrated as being effective, hand (manual) starting is permissible, such as manual cranking, inertial starters, manual hydraulic accumulators, powder charge cartridges.

9.4.6 When hand (manual) starting is not practicable, the provisions of Vol 2, Pt 2, Ch 1, 9.4 Starting of the emergency source of power 9.4.2 and Vol 2, Pt 2, Ch 1, 9.4 Starting of the emergency source of power 9.4.3 are to be complied with except that starting may be manually initiated.

9.4.7 Electric starting arrangements are to also satisfy Vol 2, Pt 2, Ch 1, 9.2 Electric starting 9.2.2 to Vol 2, Pt 2, Ch 1, 9.2 Electric starting 9.2.5 and Vol 2, Pt 2, Ch 1, 9.3 Additional requirements for electric starting for naval ships 9.3.1.

9.5.1 Power supplies are to be arranged so that power for electrically powered control, alarm, monitoring and safety systems required for engine starting and operation will remain available in the event of a failure. Power is to remain available to permit starting attempts for the number of starts specified by this Section for each individual source of stored energy.

9.5.2 Where adequate battery and charging capacity exists, an engine-starting battery may be used as one source of electrical power required by Vol 2, Pt 2, Ch 1, 9.5 Engine control, alarm, monitoring and safety system power supplies 9.5.1.

9.5.3 An alarm is to be activated in the event of failure of a power supply and, where applicable, low battery charge level. Manual power supply changeover facilities are permitted.