Section 8 Lubricating oil systems

8.1.1 In addition to the requirements detailed in this Section, the requirements of Sections 2 and 4 are to be complied with in so far as they are applicable. In all cases, the following are to apply:

• Pt 5, Ch 12, 2.6 Precautions against fire 2.6.1, Precautions against fire.
• Pt 5, Ch 12, 4.1 Control of pumps, Control of pumps.
• Pt 5, Ch 12, 4.2 Relief valves on pumps, Relief valves on pumps.
• Pt 5, Ch 12, 4.4 Pipes conveying oil, Pipes conveying oil.
• Pt 5, Ch 12, 4.10 Separate fuel oil tanks, Separate fuel oil tanks.
• Pt 5, Ch 12, 4.6 Valves on tanks and their control arrangements 4.6.1, Valve or cock secured to the tank.

8.1.2 Satisfactory lubrication of the engines is to be ensured while starting and manouvring.

8.1.3 Independently driven pumps of rotary type are to be fitted with a non-return valve on the discharge side of the pump.

8.2.1 All main and auxiliary engines intended for essential services are to be provided with means of indicating the lubricating oil pressure supply to them. Where such engines are of more than 37 kW, audible and visual alarms are to be fitted to give warning of an appreciable reduction in pressure of the lubricating oil supply. These alarms are to be actuated from the outlet side of any restrictions, such as filters, coolers, etc.

8.3.1 Where the lubricating oil for main propelling engines is circulated under pressure, provision is to be made for the efficient filtration of the oil. The filters are to be capable of being cleaned without stopping the engine or reducing the supply of oil to the engine.

8.4.1 Extreme care is to be taken to ensure that lubricating oil pipes and fittings, before installation, are free from scale, sand, metal particles and other foreign matter.

8.5.1 The materials used in the storage and distribution of lubricating oil are to be selected such that they do not introduce contaminants or modify the properties of the oil. The use of cadmium or zinc in lubricating oil systems where they may normally come into contact with the oil is not permitted.

8.5.2 The design and construction of engine and gear box piping arrangements are to prevent as far as practicable, contamination of engine lubricating oil systems by leakage of cooling water or from bilge water where engines or gearboxes are partly installed below the lower platform.

8.5.3 Where a lubricating oil filling pipe and cap are provided for engines or other machinery, provision is to be made for the topping up oil to safely pass through a suitable strainer. The caps are to be capable of being secured in the closed position.