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PRINTABLE VERSIONRules for the Installation, Inspection & Testing of Air Reservoirs (Other than on Locomotives) is available in PDF format (file size 153kb) which will download in approximately 44 seconds on a 28.8 connection and may be viewed using Acrobat Reader (version 3.0 or higher). Note: Portable Document Format (PDF) formats may be viewed using version 3.0 or higher of the Adobe® Acrobat Reader. This reader may be downloaded free of charge by visiting the Adobe® web site. Part I - General
Part II - Filing Requirements APPENDIX I: Specification and Inspection Report for Air Reservoirs and Associated Components Part I – General1. Short Title1.1 For ease of reference, this rule may be referred to as the “Air Reservoir Rule”. 2. Scope2.1 These rules prescribe the standards for installation, inspection, testing and reporting of air reservoirs used by railway companies subject to the jurisdiction of Transport Canada. These rules apply to stationary and portable reservoirs except those on locomotives. 3. Definitions:In these rules: 3.1 “air reservoir” means a tank of air larger than 5 cubic feet and under pressure greater than 15 pounds per square inch; 3.2 “automatic drain valve” means a device which automatically drains condensate from the air reservoir supply system; 3.3 “department” means the Department of Transport, Surface Group; 3.4 “design pressure” means the maximum permissible internal operating pressure for a vessel in its normal operating position at the operating temperature specified for that pressure, and includes a factor of safety of 4. 3.5 “factor of safety” means a margin of safety and is used to determine maximum allowable stress value used for the design of the reservoir; 3.6 “authorized working pressure” means the pressure at which a vessel is authorized to operate; it must always be less than the design pressure; 3.7 “hydrostatic testing” means a test capable of pressurizing the reservoir to a minimum test pressure of 1 ¼ times the maximum authorized working pressure (as prescribed on the badge plate); 3.8 “railway company” means a railway or railway company subject to the Railway Safety Act; 3.9 "railway safety inspector" means a Department of Transport inspector appointed pursuant to section 27 of the Railway Safety Act; 3.10 "telltale drilled" means a reservoir drilled to a pre-determined depth over its entire surface, both shell and heads, using a standard 3/16 inch drill. 4. General4.1 A railway company is responsible to ensure that all air reservoirs, associated piping, pressure gauges and safety valves attached thereto, are safely maintained. 4.2 A railway company shall prepare and distribute suitable air reservoir maintenance guidelines to railway staff which upon request shall be made available to a railway safety inspector. These guidelines will include authorized working pressure. 4.3 Any reservoir developing leakage through a telltale hole or corrosion of the reservoir steel plate, shall be permanently removed from service. 4.4 Any newly installed reservoir shall be telltale drilled using the procedures in section 8.2. 5. Reservoir Installation Requirements5.1 IdentificationA serial number and the authorized working pressure shall be plainly stamped in figures not less than 1/4 inch high on a metal plate, and the metal plate fastened to the reservoir in a conspicuous location. 5.2 Pressure GaugesEach stationary air reservoir system shall be equipped with a pressure gauge graduated to at least fifty per cent above the safety valve setting. 5.3 Safety Valves
5.4 Drain ValveEvery air reservoir shall be provided with an automatic or manual drain valve connected to the lowest part of the reservoir. 5.5 SettingReservoirs shall be set up on supports, so that the bottom of the reservoir is clear of the ground and ample space for a drain valve is provided. 6. Inspection and Hydrostatic Testing6.1 Reservoirs will be inspected to verify condition of reservoir system, air gauges and safety valves. Air gauges and safety valves shall be inspected annually. Defective components will be replaced. 6.2 Inspections and hydrostatic testing will be performed:
7. Hydrostatic Testing Procedures7.1 Reservoirs requiring hydrostatic testing shall be tested to a pressure at least 25 per cent greater than the working pressure authorized under 5.1. The date of the hydrostatic test shall be stencilled in not less than one inch figures at a prominent location on each reservoir. 7.2 The entire surface of an undrilled reservoir shall be hammer-tested before each hydrostatic test with reservoir under atmospheric pressure. 7.3 All undrilled air reservoirs shall be thoroughly cleaned by washing out at each hydrostatic test, so as to remove all foreign matter, and then closely examined for corrosion and pitting. 8. Telltale Drilling8.1 GeneralExisting welded reservoirs may be telltale drilled using the procedures in section 8.2. Newly installed reservoirs, except those constructed of corrosion resistant steel, must be telltale drilled. 8.2 Procedures
Part II – Filing Requirements9. Filing Requirements with the Department9.1 Stationary Air Reservoirs
9.2 Portable Air Reservoirs
Appendix I: Specification and Inspection Report for Air Reservoirs and Associated ComponentsName of Railway Company:
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