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Online Companion Guide to the ASME Boiler & Pressure Vessel Codes
Publisher:
ASME Press
Publication date:
2020

The rules for the construction of Section III are based on the design and construction rules in Section VIII of the ASME Boiler and Pressure Vessel Code. This chapter identifies that the ASME Section III Nuclear Code is completely compatible with Sections I and VIII. Before the Nuclear Code was published, Code Cases for Sections I and VIII were written for the first nuclear plants in the early 1950s. In 1959, the Code Case book addressed nuclear installations as follows: General Requirements for Nuclear Vessels 1270N; Safety Devices 1271N; Containment and Intermediate Containment Vessels 1272N; Nuclear Reactor Vessels and Primary Vessels 1273N; and Special Material Requirements 1274N. The explanations of these original Code Cases are given in the chapter. The chapter briefly discusses the three types of pressure vessels addressed in Section III, namely, N-131 Class A Vessels, N-132 Class B Vessels, and N-133 Class C Vessels, covering the aspects of design, materials, and inspection, among others. It presents a brief note on the changes made to Section III in the 1971 edition. The chapter also presents an appendix providing information on the five Code Cases in the form of inquiries and replies. It covers the original Commentaries for Section III and Section VIII, Division 2, which is based on Section III reactor pressure vessel rules with the same design factor 3.

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