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AWS - A2.4:2020

Standard Symbols for Welding, Brazing and Nondestructive Examination

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Organization: AWS
Publication Date: 1 January 2020
Status: active
Page Count: 164
ICS Code (Welding, brazing and soldering in general): 25.160.01
ISBN (print): 978-1-64322-091-8
ISBN (pdf): 978-1-64322-092-5
scope:

1.1 Scope. This standard presents a system for indicating welding, brazing, and nondestructive examination requirements. The system includes provisions for the graphical representation of welds, brazes, and nondestructive examination methods with conventions for specifying, at a minimum, the location and extent of their application. Optional elements and supplementary symbols provide a means for specifying additional requirements. Requirements not detailed on the symbol used for welding, brazing, or nondestructive examination shall be provided or referenced elsewhere on the drawing. Both figures and illustrations are used to depict the use of symbols. Figures are referenced by number within this document to show the correct format and application of symbols used to convey welding, brazing, and nondestructive examination information. An illustration is an un-numbered graphical representation of an example application described within the associated text without providing additional technical requirements. Figures and illustrations are not intended to represent recommended welding, brazing, nondestructive examination, or design practices. The clause addressing brazing uses the same symbols and conventions as for welding, with the addition of the scarf symbol. The clause addressing symbols for nondestructive examination represents nondestructive examination methods as discussed in the latest edition of AWS B1.10M/B1.10, Guide for the Nondestructive Examination of Welds. The limitations included in specifications and codes are also beyond the scope of this standard. 1.2 Units of Measurement. This standard does not require units of measure. Therefore, no equivalents or conversions are contained except when they are cited in examples. 1.3 Safety. Safety and health issues and concerns are beyond the scope of this standard and therefore are not addressed herein. Safety and health information is available from the following sources: American Welding Society: (1) ANSI Z49.1, Safety in Welding, Cutting, and Allied Processes (2) AWS Safety and Health Fact Sheets (3) Other safety and health information on the AWS website Material or Equipment Manufacturers: (1) Safety Data Sheets supplied by materials manufacturers (2) Operating Manuals supplied by equipment manufacturers Applicable Regulatory Agencies Work performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1 should be considered when developing the safety program.

abstract:

This standard establishes a method for specifying certain welding, brazing, and nondestructive examination information by means of symbols, including the examination method, frequency, and extent.... View More

Document History

A2.4:2020
January 1, 2020
Standard Symbols for Welding, Brazing and Nondestructive Examination
1.1 Scope. This standard presents a system for indicating welding, brazing, and nondestructive examination requirements. The system includes provisions for the graphical representation of welds,...
January 1, 2012
Standard Symbols for Welding, Brazing and Nondestructive Examination (AWS A2.4)
1.1 Scope. This standard presents a system for indicating welding, brazing, and nondestructive examination requirements. The system includes provisions for the graphical representation of welds,...
January 1, 2007
Standard Symbols for Welding, Brazing and Nondestructive Examination
This standard presents a system for indicating welding, brazing, and nondestructive examination requirements. The system includes provisions for the graphical representation of welds, brazes, and...
January 1, 1998
Standard Symbols for Welding, Brazing and Nondestructive Examination
1. Basic Symbols 1.1 Distinction Between Weld Symbol and Welding Symbol. This standard makes a distinction between the terms weld symbol and welding symbol. The weld symbol indicates the type of weld...

References

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