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Marine Machinery Regulations (SOR/90-264)

Regulations are current to 2019-11-19 and last amended on 2017-02-03. Previous Versions

SCHEDULE VIReversing and Reduction Gearing, Shafting Systems and Propellers

PART I(Section 4)Design Specifications

DIVISION IReversing and Reduction Gearing

ItemRequirements
1None.

DIVISION IIShafting Systems

ItemRequirements
1Screw shafts shall be made of
  • (a) carbon steel protected from exposure to water in the stern bearing by a corrosion-resistant continuous liner, or non-continuous liners between each of which is a welded joint or a suitable bonded coating;

  • (b) carbon steel protected from exposure to water by means of an oil lubricated stern bearing with internal and external glands;

  • (c) corrosion resistant metal in accordance with rules or codes; or

  • (d) carbon steel not fitted with the methods of water exposure protection referred to in subitem (a) or (b).

2The screw shaft shall have the propeller attached by means of
  • (a) a suitable shaft taper with a keyway that is

    • (i) in sled runner form, or

    • (ii) in a form where the top end is well rounded and smoothed off, with an adequate root radius;

  • (b) a suitable shaft taper with no keyway; or

  • (c) a coupling flange.

DIVISION IIIPropellers

ItemRequirements
1None.

PART II(Section 6)Plans

DIVISION IReversing and Reduction Gearing

ItemRequired Information
1General arrangement of the installation of the gearing in the ship, showing all connected systems.
2General arrangement and sectional elevation of the gearing unit, including means of gearcase support.
3Specifications indicating maximum input torque and corresponding revolutions per minute for each pinion, details of pinions and wheels, number of teeth, pitch, form and helix angles, details of wheel-rim attachment, gear-cutting and post-cutting processes, physical properties of principal parts, details of forgings, castings and weldments, details of the heat treatment process and testing procedures.
4Details of gearcase, including access openings and venting arrangements.
5Details of shafting systems, including couplings, clutches, reversing gear where fitted, and balancing and vibration analyses.
6Details of bearings, lubricating oil systems and temperature monitoring devices.
7Information set out in items 2 to 6 is not required to be submitted for a gearing system
  • (a) not in excess of 225 kW continuous brake power; or

  • (b) over 225 kW and not in excess of 375 kW continuous brake power, where the manufacturer submits the following documented information:

    • (i) model and serial number and type of gearing,

    • (ii) maximum continuous input torque and corresponding revolutions per minute,

    • (iii) gearing reduction, and

    • (iv) test data up to full power taken from a representative gearing system of the same model.

DIVISION IIShafting Systems for Propulsion, Electrical Generators and Motors

ItemRequired Information
1General arrangement of the propulsion shafting, the electrical generator shafting and motor shafting in the ship, showing all connected systems.
2General arrangement and sectional elevation of the shafting systems, detailing attachments to driving and driven members and means of support.
3Specifications indicating maximum input power and corresponding revolutions per minute, alignment of shafting system and bearing type and loading, physical properties of materials and testing procedures.
4For ship propulsion shafting systems, details of
  • (a) intermediate, thrust and screw shafts including liners, in particular protective coating for carbon steel screw shafts with non-continuous liners;

  • (b) intermediate, thrust, stern and “A” bracket bearings;

  • (c) stern bushes and stern glands including their attachments to the ship;

  • (d) shaft lubrication arrangements; and

  • (e) critical speed of rotating assembly including vibration analysis.

5Information set out in items 2 to 4 is not required to be submitted for shafting systems
  • (a) not in excess of 225 kW continuous brake power on ship propulsion systems; or

  • (b) not in excess of 375 kW continuous brake power in ship service electrical generators and motors.

DIVISION IIIFixed Pitch, Controllable Pitch and Directional Propellers

ItemRequired Information
1General arrangement of the propeller, including details of fastening arrangement to the shafting systems.
2Specifications indicating maximum input power and corresponding revolutions per minute, physical properties of materials, stress calculations and testing procedures.
3Details of hub, hub mechanisms, seals, blade connections, control devices and locations.
4Details of blade form and degree of controllability of pitch.
5Information set out in items 2 to 4 is not required to be submitted for propellers not in excess of 225 kW continuous brake power.

PART III(Subsection 12(2))Construction and Installation Inspections

DIVISION IConstruction Inspection

ItemRequirements
Reversing and Reduction Gearing
1Identification from material test certificates, before construction is commenced, of materials to be used, including welding metal, for the following parts:
  • (a) shafting, pinions, wheels, couplings, clutches, and bolts; and

  • (b) gearcase, bearings, piping, valves, and bolts.

2Verification that welding was carried out by welders certified by a Provincial Government of Canada, or another authority having similar standards where the welding was carried out outside Canada, for the class of work to be done.
3Inspection of welds, including non-destructive test examination and verification of any required heat treatment process in accordance with rules or codes.
4Verification of correct wheel-rim cutting, gear-cutting and post-cutting processes.
5Verification of correct balance of rotating components.
6Identification of components from component inspection certificates and inspection of components and their installation.
7Inspection of the completed gearcase and witnessing of the gearing operation under test conditions.
Shafting Systems for Propulsion, Electrical Generators and Motors
8Identification from material test or component inspection certificates, before construction is commenced, of materials to be used for the following parts:
  • (a) electrical generator and motor shafts, ship propulsion intermediate, thrust and screw shafts, including liners and bolts; and

  • (b) intermediate, thrust, stern and “A” bracket bearings and stern bushes.

9Inspection of the constructed components and confirmation of correct liner installation.
Fixed Pitch, Controllable Pitch and Directional Propellers
10Identification from material test or component inspection certificates, before construction is commenced, of materials to be used for propellers, nuts, glands, keys, cones and, as applicable, hubs, blades, nuts, pitch and directional control mechanisms.
11Inspection of assembled components, including non-destructive test examination as required by the inspector.

DIVISION IIInstallation Inspection

ItemRequirements
1Verification of correct alignment of securing arrangements.
2Verification of correct adjustment and operational condition the gearing, shafting systems, propellers and their connections to associated systems.
3Verification of correct adjustment and operational condition of safety, control and monitoring devices.
4Verification of reliability and sufficiency under trials up to full power capacity under normal working conditions for a suitable endurance period of not less than 2 hours, taking into consideration the size and complexity of the reversing and reduction gearing, shafting systems and propellers.

PART IVPeriodic General Inspections and Periodic Special Inspections

DIVISION I(Section 19)Periodic General Inspection

ItemRequirements
Reversing and Reduction Gearing
1Operational condition of the gearing system.
2Operational condition of the reversing system in reversing and reduction gearing.
3Operational condition of the lubricating oil system.
4Correct adjustment and operational condition of safety devices.
5Locations where fluid leakage, overheating, heavy vibration or excessive gland or bearing clearances may occur.
6Correct adjustment of controls and monitoring systems.
7Operational condition of alarm systems, particularly where the reversing and reduction gearing is designed for non-continuous local supervision.
Shafting Systems for Propulsion, Electrical Generators and Motors
8Operational condition of the lubricating fluid system.
9Locations where overheating, vibration, fractures, excessive gland or bearing clearances may occur.
10Screw shaft inspection, as far as practicable, without withdrawal, at the time of each dry-docking with the stern bearing wear-down being determined and recorded.
Fixed Pitch, Controllable Pitch and Directional Propellers
11Operational condition of the propellers.
12Correct adjustment of all controls and monitoring systems of controllable pitch and directional propellers.
13Controllable pitch and directional propellers for any evidence of control fluid leakage.
14Operational condition of all alarm systems for controllable pitch and directional propellers.

DIVISION IIPeriodic Special Inspection

SUBDIVISION I(Subsection 20(1))Parts to be Inspected
ItemRequirements
Reversing and Reduction Gearing
1Subject to item 2, casing, pinions, wheels, shafts, couplings, clutches, glands, thrust bearing and selected other bearings, following removal of casing main cover.
2Removal of casing main cover is not required if vibration or oil analysis, inspection through inspection doors and condition monitoring shows that the condition of the components is adequate for further service.
3Gear-case ventilating system and safety devices.
4Oil-flow indicating, filtering and temperature monitoring devices.
Shafting Systems for Propulsion, Electrical Generators and Motors
5For intermediate shafts, thrust shafts, electrical generators and motor shafts
  • (a) bearings, thrust pads and shaft surfaces following lifting of the upper half of the bearing and removal of thrust pads, and the lower half of the bearing shall be exposed if alignment and wear are unacceptable in accordance with rules or codes and the manufacturer’s recommendations;

  • (b) bearing securing arrangements; and

  • (c) lubricating oil system and temperature monitoring devices.

6For screw shafts,
  • (a) shaft surfaces, liners, glands, key and keyway, nuts, locking devices and, as far as practicable, the stern bearing and tube, following shaft withdrawal; and

  • (b) uncoated surfaces of water lubricated carbon steel shafts adjacent to the ends of the non-continuous liners and at the forward end of the sharp edged keyway by means of a magnetic-particle, dye-penetrant or other crack detection method.

Fixed Pitch, Controllable Pitch and Directional Propellers
7For fixed pitch propellers,
  • (a) the propeller, the nut, locking devices and cone, following removal from the shaft; and

  • (b) installation of the propeller to the shaft in respect of correct propeller reassembly on the shaft.

8For controllable pitch or directional propellers,
  • (a) operating-fluid systems and blade-position control devices;

  • (b) blades, hub and internal gearing;

  • (c) installation in respect of correct reassembly and operation; and

  • (d) all items, where applicable, set out in Division I, following completion of special periodic inspection.

SUBDIVISION II(Subsection 20(2))Intervals
ItemRequirements
Reversing and Reduction Gearing
1At intervals not exceeding 5 years.
Shafting Systems for Propulsion, Electrical Generators and Motors
2Intermediate shafts, thrust shafts, electrical generators and motor shafts, at intervals not exceeding 5 years.
3Subject to items 4 to 7, screw shafts at intervals not exceeding 5 years.
4Screw shafts in ships referred to in subsection 407(1) of the Act, at intervals not exceeding 4 years.
5Screw shafts that meet the requirements of subitem 1(d) of Division II of Part I, at intervals not exceeding 2 years except for screw shafts in ships operating on voyages in fresh water only or between inland waters of Canada and not beyond Home Trade Class II limits where the ship operates in fresh water at least 3 months of the year, at intervals not exceeding 5 years.
6For an oil-lubricated screw shaft having a keyless taper or flange for propeller attachment, a partial inspection without shaft withdrawal, at alternate periodic special inspections, if
  • (a) the lubricating oil analysis shows that the oil is suitable for further service;

  • (b) the stern bearing wear-down is within safe limits; and

  • (c) the external oil gland is disassembled and the area at the top of the taper or flange fillet is subjected to a magnetic-particle, dye-penetrant or other crack detection method.

7For a water-lubricated, corrosion-resistant metal screw shaft having a keyless taper or flange for propeller attachment, a partial inspection with limited shaft withdrawal, at alternate periodic special inspections, if
  • (a) the stern bearing wear-down is within safe limits; and

  • (b) the shaft is withdrawn to a sufficient distance to expose the stern bearing contact area and the area at the top of the taper or flange fillet is subjected to a magnetic-particle, dye-penetrant or other crack detection method.

Fixed Pitch, Controllable Pitch and Directional Propellers
8Fixed pitch propellers, at the time of periodic special inspection of screw shafts.
9Controllable pitch propellers
  • (a) with hubs removed from screw shafts, at intervals not exceeding 10 years except that hubs are not required to be removed from the shafts if the securing studs or cap screws can be extracted and inspected, especially the threaded portions of hubs and securing studs or cap screws; and

  • (b) blade systems, at the time of screw shaft periodic special inspection or partial inspection with only one blade system different from the blade system examined at a previous inspection dismantled so that in the course of successive inspections all the blade systems are inspected, if mechanisms, bearing tolerances, bolting, sealing arrangements and operating fluid analyses show that the blade systems are suitable for further service.

10Directional propellers, at intervals not exceeding 8 years if at the time of each dry docking the operation of the blades, bearing tolerances, bolting, sealing arrangements and operating or lubricating fluid analyses indicate that the directional propellers are suitable for further service.
  • SOR/2015-161, ss. 8(E), 9(F)
 
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