48 Canadian Boiler and Pressure Vessel Standards
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Chapter 48, authored by Wolf Reinhardt, Nick van den Brekel and Douglas Rodgers, introduces the Canadian pressure vessel standards and explains their relationship to the ASME Code. Distinct features of the Canadian approach to standard development are discussed. The chapter provides the reader with an outline of the Canadian standards and an appreciation of some of their important characteristics. Generally, the Canadian pressure vessel standards adopt the applicable ASME Code sections as the base documents, and then supplement these rules for specific applications as needed. Beyond the ASME Code, the Canadian non-nuclear pressure vessels and piping standard addresses mostly registration and classification of components, and the requirements for specialized systems such as liquefied natural and petroleum gas systems. The Canadian nuclear construction and in-service inspection standards are based on the corresponding Sections of the ASME Code, but many unique features of the Canadian CANDU (heavy-water) reactor design and licensing basis necessitate additional or modified requirements. In this edition authors added valuable text and graphics to address the ‘Future CANDU Developments’ in the Advanced CANDU Reactor technology as an evolution of the CANDU® 6 reactor with improvements to deliver enhanced safety margins, lower capital and operating costs, improved maintenance and high operating performance. They provide a detailed discussion about the distinctive Canadian nuclear seismic standards. A typical CANDU reactor design is illustrated to allow readers to appreciate the background of these rules. Generation III and Generation IV CANDU designs are outlined. A brief outlook to expected future developments in Canadian standards in the international context concludes the chapter.