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Marine Machinery Regulations

Version of the schedule from 2006-03-22 to 2021-06-22:

SCHEDULE ISteam Boilers Having a Design Working Pressure Exceeding 350 kPa

PART I(Section 4)Design Specifications


PART II(Section 6)Plans

ItemRequired Information
1General arrangement of the installation of the steam boiler in the ship showing means of support.
2Design working pressure, temperature and evaporation rate.
3Heating surface area of the steam boiler, and where fitted, of the superheater and economizer.
4Materials, sizes and arrangement of parts under pressure, including superheaters, economizers and valves.
5Details of welded seams, openings, connections, attachments and supports, including details of welding materials, methods and procedures.
6Details of the heat treatment process and testing procedures.
7Pressure setting, relieving capacity and venting arrangements of safety valves.
8Arrangements and details of steam boiler feed-water controls, monitors and alarms, including emergency controls.
9Materials, components, sizes and arrangements of fuel combustion systems, including fuel supply, combustion air supply, air preheaters, exhaust uptakes and combustion controls, monitors and alarms, including emergency controls.

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

DIVISION IConstruction Inspection

1Identification from material test certificates, before construction is commenced, of materials to be used, including welding metal, and of physical properties and mechanical test results obtained from material testing carried out in accordance with these Regulations.
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 the heat treatment process in accordance with rules or codes.
4Verification of plate preparation and alignment prior to assembly and, on completion of all construction operations, confirmation of circularity of shells.
5Identification from the component inspection certificates of components related to the safety of the boiler.
6Inspection of components and their installation, including tubes and tube plates.
7Inspection of the constructed steam boiler.
8Witnessing of hydrostatic pressure tests in accordance with rules or codes.

DIVISION IIInstallation Inspection

1Verification of correct alignment of securing arrangements.
2Verification of correct adjustment and operational condition of the connection of the steam boiler to steam, feed-water, blowdown and surface blow systems.
3Verification of correct adjustment and operational condition of fuel, combustion air supply and exhaust gas systems, including burners, air fans and air preheaters.
4Verification of correct adjustment and operational condition of safety, control and monitoring devices.
5Inspection of safety valve relieving capacity in respect of the maximum evaporation capacity of the steam boiler.
6Witnessing of hydrostatic pressure tests at the assigned working pressure.
7Verification of reliability and sufficiency under trials up to full power under normal working conditions for a suitable endurance period of not less than 2 hours, taking into consideration the size and complexity of the steam boiler.

PART IVPeriodic General Inspections and Periodic Special Inspections

DIVISION I(Section 19)Periodic General Inspection

1Correct adjustment and operational condition of safety valves.
2Correct adjustment and operational condition of water gauges and steam boiler valves.
3Locations where fluid leakage, metal overheating or metal wastage may occur.
4Correct adjustment and operational condition of emergency fuel shut-off valves.
5Correct adjustment of controls and monitoring systems of feed-water and fuel and its combustion.
6Operational condition of alarm systems, particularly where the boiler is designed for non-continuous local supervision.

DIVISION IIPeriodic Special Inspection

SUBDIVISION I(Subsection 20(1))Parts to be Inspected
1Internal steam and liquid spaces, as far as practicable, of the boiler, superheater and economizer, with all spaces cleaned and removable components removed and where, due to construction features, an adequate internal inspection cannot be carried out, a hydrostatic pressure test of 1.25 times the assigned working pressure of the boiler.
2Access and inspection openings.
3Boiler mountings, including safety valves and water-level gauges, following opening up and cleaning.
4Float chambers and float mechanisms on feed-water regulators, following opening up and cleaning.
5Pipes, actuators and other components, incorporated in self regulating and monitoring systems, as far as practicable, without dismantling if the general condition of the component shows that it is suitable for further service.
6Emergency fuel shut-off devices.
7Combustion spaces following cleaning, excluding uptakes and air preheaters unless there is apparent damage, improper operation or deteriorated condition of the uptakes or air preheaters.
8Seams, mountings, seatings, rolling stays, collision chocks and welded attachments, following the removal of insulation and sheathing to the extent considered necessary by the inspector on the basis of the general condition of the boiler.
9Plate thickness testing or hydrostatic pressure testing or other non-destructive testing, if there is apparent damage, improper operation or deteriorated condition of the boiler.
SUBDIVISION II(Subsection 20(2))Intervals
1Combustion air fans and driving components, at intervals not exceeding 5 years and all other components, at intervals not exceeding 24 months.

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